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MIRM US Equity

Mirum Pharmaceuticals, Inc.Health Care · Pharmaceutical Preparations · CIK 1759425 · FY ends Dec 31
$97.07
-5.17 (-5.06%)
USD · as of 2026-08-20 · marketstack

MIRM · 10-K · period ended 2025-12-31

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filed 2026-02-25 · EDGAR original ↗

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Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

You should read the following discussion and analysis of our financial condition and results of operations together with our consolidated financial statements and related notes included in Item 8 “Financial Statements and Supplementary Data” and included elsewhere in this Annual Report. This discussion and analysis contains forward-looking statements based upon our current beliefs, estimates, plans and expectations that involve risks, uncertainties and assumptions. Our actual results may differ materially from those contained in these forward-looking statements as a result of various factors, including those set forth under “Risk Factors” or in other parts of this Annual Report.

Overview

We are a biopharmaceutical company dedicated to transforming the treatment of rare diseases. We have three approved medicines: LIVMARLI® (maralixibat) (“Livmarli”), CHOLBAM® (cholic acid) capsules (“Cholbam”), and CTEXLI® (chenodiol) tablets (“Ctexli”).

Livmarli is a novel, orally administered, minimally-absorbed ileal bile acid transporter (“IBAT”) inhibitor (“IBATi”) that is approved for the treatment of cholestatic pruritus in patients with Alagille syndrome (“ALGS”) in the United States (“U.S.”), the European Union (“EU”) and various other countries around the world and for cholestatic pruritus in patients with progressive familial intrahepatic cholestasis (“PFIC”) in the U.S., Canada and Japan and for the treatment of PFIC in the EU. We market and commercialize Livmarli in the U.S., Canada and certain countries in Europe through our specialized and focused commercial team. We have also entered into license and distribution agreements with several rare disease companies for the commercialization of Livmarli in additional countries. In March 2025, our partner Takeda received approval from the Japanese Ministry of Health, Labour, and Welfare for Livmarli for the treatment of cholestatic pruritus in patients with ALGS and PFIC.

In August 2023, we completed the acquisition of assets of Travere Therapeutics, Inc. (“Travere”) that are primarily related to the development, manufacture (including synthesis, formulation, finishing or packaging) and commercialization of chenodiol and Cholbam (also known as Kolbam) (and together with chenodiol, the “Bile Acid Medicines”) pursuant to an asset purchase agreement dated July 16, 2023 (such acquisition, the “Bile Acid Portfolio Acquisition”).

The U.S. Food and Drug Administration (“FDA”) approved Cholbam in March 2015, as the first FDA-approved treatment for pediatric and adult patients with bile acid synthesis disorders due to single enzyme defects, and for adjunctive treatment of patients with peroxisomal disorders, including peroxisome biogenesis disorder-Zellweger spectrum disorder (“PBD-ZSD”). Chenodiol is standard of care for the treatment of cerebrotendinous xanthomatosis (“CTX”) in the U.S. with a medical necessity recognition by the FDA and was commercialized under the brand name Chenodal. We submitted a new drug application (“NDA”) for chenodiol for the treatment of CTX in 2024 and received FDA approval for the treatment of adults with CTX in February 2025, which is commercialized under the brand name Ctexli. We currently market and commercialize Cholbam and Ctexli in the U.S. through our specialized and focused commercial team. We have also assumed license and distribution agreements with several rare disease companies for the commercialization of Cholbam and chenodiol in additional countries.

We are advancing our product candidate, volixibat, a novel, oral, minimally-absorbed agent designed to inhibit IBAT, for the treatment of adult patients with cholestatic liver diseases. We are developing volixibat in the setting of primary sclerosing cholangitis (“PSC”) and primary biliary cholangitis (“PBC”), and in October 2024, we announced that the FDA granted Breakthrough Therapy designation for volixibat as a potential treatment for cholestatic pruritus in patients with PBC. We conducted an interim analysis of our VISTAS Phase 2b clinical trial in PSC and reported interim data from our VANTAGE Phase 2b clinical trial in PBC in June 2024. The VISTAS Phase 2b clinical trial in PSC completed enrollment in the third quarter of 2025 and topline data is expected in the second quarter of 2026. In addition, we expect to submit an NDA to the FDA for volixibat for the treatment of PSC in the second half of 2026, with both potential approval and subsequent launch of volixibat for the treatment of PSC, if approved, to occur in the first half of 2027. We expect the VANTAGE Phase 2b clinical trial in PBC to complete enrollment in the second half of 2026 with topline data expected in the first half of 2027.

In addition, we are developing Livmarli for certain rare cholestatic conditions through the Phase 3 EXPAND study, which we initiated in the fourth quarter of 2024. We expect to complete enrollment of the EXPAND study in the first half of 2026 with topline data expected in the fourth quarter of 2026.

In October 2024, we completed a license agreement with Enthorin Therapeutics, LLC and Dart Neuroscience LLC granting us the worldwide right to develop and commercialize MRM-3379, an allosteric inhibitor of Phosphodiesterase 4D (“PDE4D”). We are currently enrolling patients in the BLOOM Phase 2 clinical study of MRM-3379 in Fragile-X Syndrome (“FXS”) and expect topline data in 2027.

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On January 23, 2026, we completed the acquisition (the “Bluejay Acquisition”) of Bluejay Therapeutics, Inc. (“Bluejay”) and its lead product candidate brelovitug (BJT-778). We are advancing brelovitug for the treatment of chronic hepatitis D virus (“HDV”) infection. Brelovitug is a fully human IgG1 monoclonal antibody that binds the hepatitis B surface antigen, thereby clearing virions and subviral particles and preventing HDV infection and replication. Brelovitug has been granted FDA Breakthrough Therapy designation, EMA Priority Medicines (“PRIME”) scheme designation and European Commission orphan medicinal product designation. Brelovitug is currently being evaluated in the global AZURE clinical program with topline results from the AZURE-1 and AZURE-4 registration-enabling clinical trials expected in the second half of 2026 and top-line results from the AZURE-2 and AZURE-3 registration-enabling clinical trials expected by the first half of 2028. We believe that the results from the AZURE-1 and AZURE-4 trials may support a potential biologics license application submission to the FDA for brelovitug in HDV in the first half of 2027 followed by a potential approval and subsequent launch, if approved, in the second half of 2027. We believe that the results of the AZURE-2 and AZURE-3 clinical trials may support a potential EMA registration and subsequent commercial launch, if approved, in the EU.

To date, we have focused primarily on acquiring and in-licensing our product candidates, organizing and staffing our company, business planning, raising capital, advancing our product candidates through clinical development, preparing for commercialization of our product candidates, commercializing our approved medicines, and conducting business development activities relating to, among other things, portfolio expansion through collaborations and acquisitions.

Financial Overview

Our net loss was $23.4 million and $87.9 million for the years ended December 31, 2025 and 2024, respectively. As of December 31, 2025, we had an accumulated deficit of $667.5 million compared to $644.2 million as of December 31, 2024. As of December 31, 2025, we had unrestricted cash, cash equivalents and investments of $391.4 million, compared to $292.8 million as of December 31, 2024.

While we generated net income in the third quarter of 2025, we anticipate we will continue to generate net losses for the foreseeable future as we continue commercial activities for our approved medicines, conduct our ongoing and planned clinical trials, including the clinical trials for brelovitug, seek regulatory approvals for our product candidates and make potential milestone payments to the licensors and other third parties from whom we have in-licensed or acquired our product candidates. We expect that total product sales of our approved medicines will continue to increase on an annual basis; however, due to large periodic orders from Takeda and our distributors, our product revenue may experience quarterly fluctuations. Additionally, our product revenues from Takeda are based upon variable consideration estimates. If actual results vary from our estimates, we will make adjustments in the period when such variances become known. As a result, our net losses may fluctuate significantly from quarter-to-quarter and year-to-year.

We expect to satisfy future cash needs through existing capital balances, revenue from our approved medicines and through a combination of equity offerings, debt financings or other capital sources, collaborations, licenses and other similar arrangements. However, we may be unable to raise additional funds or enter into such other arrangements when needed on favorable terms or at all. Our failure to raise capital or enter into such other arrangements when needed could have a negative impact on our financial condition and on our ability to pursue our business plans and strategies. If we are unable to raise additional capital when needed, we could be forced to delay, limit, reduce or terminate the development of one or more of our product candidates or future commercialization efforts or grant rights to develop and market our product candidates even if we would otherwise prefer to develop and market such product candidates ourselves.

License agreement with Enthorin

In October 2024, we completed the in-license of MRM-3379. We paid a one-time non-refundable license fee of $7.5 million upon closing of the transaction, and up to an additional $217.5 million is payable upon achievement of certain development, regulatory and commercial milestones.

Asset Purchase Agreement with Travere Therapeutics, Inc.

In August 2023, we completed the Bile Acid Portfolio Acquisition. We paid $210.4 million upon closing of the transaction, and up to an additional $235.0 million is payable upon the achievement of certain milestones based on specified amounts of annual net sales of the Bile Acid Medicines. As of December 31, 2025, the Company accrued $25.0 million for the achievement of a commercial milestone associated with achievement of certain net product sales, which was recognized as an intangible asset in the accompanying consolidated balance sheet as of December 31, 2025 and is expected to be paid in the first quarter of 2026.

In connection with and immediately prior to the closing of the Bile Acid Portfolio Acquisition, we completed the private placement of 8,000,000 shares of our common stock at a price per share of $26.25, resulting in net proceeds of

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approximately $202.2 million, which we used to finance the upfront payment at the closing of the Bile Acid Portfolio Acquisition.

Acquisition of Bluejay Therapeutics

On January 23, 2026, we completed the Bluejay Acquisition and acquired Bluejay’s lead product candidate brelovitug (BJT-778). Upon the closing of the merger, we paid to the holders of Bluejay’s securities an aggregate amount of $224.2 million in cash, net of cash acquired in the transaction, and 4,673,597 shares of our common stock, subject in certain cases to deduction to satisfy applicable taxes. We will also pay up to an aggregate amount of $25.8 million in cash and up to 522,375 shares of our common stock, subject to deduction for taxes and certain holdbacks pursuant to the terms and conditions of the definitive acquisition agreement. Additionally, we are obligated to pay up to an aggregate of $200.0 million upon achievement of certain commercial milestones.

Immediately following the closing of the acquisition of Bluejay, we completed the private placement of 3,385,149 shares of our common stock at a price per share of $68.48 and pre-funded warrants (“Pre-Funded Warrants”) to purchase 536,412 shares of our common stock (“Warrant Shares”) at a price per share of $68.4799 per Pre-Funded Warrant, which equals the purchase price per share of our common stock sold in the first private placement, less $0.0001, the exercise price of each Pre-Funded Warrant, resulting in aggregate gross proceeds of approximately $268.5 million.

Components of Results of Operations

Revenue

Product Sales, Net

We have three approved medicines: Livmarli, Cholbam and Ctexli. We expect total product sales of our approved medicines will continue to increase on an annual basis.

Our U.S. revenue from product sales, net further depends on our prescription mix of commercial payors, Medicaid and amounts of free medicines provided under our patient assistance program. We expect our prescription mix and resulting gross to net adjustment in the U.S. to remain materially consistent. Our revenue from product sales is recognized when the control of the product is transferred. Under our license agreement with Takeda as well as agreements with distributors, we may receive large periodic orders for our products. The timing of these orders can be inconsistent and can create significant quarter-to-quarter variation in product sales. In addition, we recognize our best estimate of the consideration that we expect to receive when control of the inventory is transferred to our licensed partners and distributors. Such estimates may be complex and include estimates as to if and when our distributors and licensed partner’s sales in the market will occur. Estimates are reviewed and updated quarterly as additional information, including in-market pricing and sales information of our authorized distributors and licensed partners, becomes known which may cause variability of quarterly revenue particularly during periods of product launch.

Although we expect product revenues to increase as we continue commercial activities for our approved medicines, we may not achieve commercial success. Certain of our approved medicines, including the Bile Acid Medicines, are subject to immediate competition from compounded and generic entrants, as the abbreviated new drug application (“ANDA”) and NDA for these drug products have no remaining or current patent exclusivity. Chenodiol is standard of care for the treatment of CTX in the U.S. and was commercialized with a medical necessity recognition by the FDA until February 2025. We submitted an NDA for chenodiol for the treatment of CTX in 2024 and received FDA approval for the treatment of adults with CTX in February 2025, which is now commercialized under the brand name Ctexli. The FDA has granted orphan exclusivity for chenodiol for the treatment of CTX.

Operating Expenses

Cost of Sales

Cost of sales consist of raw materials, third-party manufacturing costs, personnel, facility and other costs of manufacturing commercial products, transportation and freight, amortization of finite-lived intangible assets and royalty payments payable on net sales of our approved medicines under licensing agreements. Cost of sales may also include period costs related to certain manufacturing services and charges for inventory valuation reserves. In addition, we have firm commitments for the purchase of minimum order quantities for active pharmaceutical ingredients. We periodically evaluate these firm commitments to determine if these commitments are in excess of our needs. If any net loss is determined, we record a charge to cost of sales in the period identified. As of the date of our acquisition of the Bile Acid Medicines from Travere, inventory acquired was valued at its fair value. As a result, our cost of sales exceeded cost to manufacture the inventory and had a negative impact on our gross margin.

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For our current approved products, we expect cost of sales to increase in the future mainly due to variable costs associated with increased product sales such as royalties payable and inventory costs, partially offset by lower unit cost of sales for the Bile Acid Medicines, as we sold the acquired inventory valued at fair value in prior periods with substantially all fair value inventory sold as of December 31, 2024. We expect cost of sales to remain approximately unchanged as a percent of product sales in the future.

Research and Development Expenses

Research and development expenses primarily relate to clinical development and manufacturing activities of our product candidates. Our research and development expenses include, among other things:

•salaries and related expenses for employee personnel, including benefits, travel and expenses related to stock-based compensation granted to personnel in development functions;

•external expenses paid to clinical trial sites, contract research organizations (“CROs”) and consultants that conduct our clinical trials;

•expenses related to drug formulation development and the production of clinical trial supplies, including fees paid to contract manufacturers;

•licensing milestone payments related to development or regulatory events;

•payments made for the acquisition or licensing of in-process research and development assets with no alternative future use;

•expenses related to non-clinical studies;

•expenses related to compliance with drug development regulatory requirements; and

•other allocated expenses, which include direct and allocated expenses for rent and maintenance of facilities, depreciation of equipment, and other supplies.

We expense research and development costs as incurred. Nonrefundable advance payments for goods or services to be received in the future for use in research and development activities are recorded as prepaid expenses. The prepaid amounts are expensed as the related goods are delivered or the services are performed. Upfront payments, research and development funding and milestone payments made to third parties in connection with licenses and research and development collaborations are expensed as incurred.

We expect our research and development expense may increase in the future as we continue to develop our volixibat and MRM-3379 product candidates, execute the EXPAND label expansion study for Livmarli and assume the development of brelovitug.

Selling, General and Administrative Expense

Sales and marketing expense, which is a component of selling, general and administrative expense, primarily consisted of employee-related expenses for our sales group, brand marketing, patient support groups and pre-commercialization expenses related to our product candidates. General and administrative expense, which is a component of selling, general and administrative expense, primarily consists of corporate support and other administrative expenses, including employee-related expenses.

We anticipate that our selling, general and administrative expenses will increase in the future to support our continued commercialization efforts of our current approved medicines in the U.S. and internationally as well as increased costs of operating as a global commercial stage biopharmaceutical public company. Additionally, if we receive approval for any of our future product candidates, we will incur increased selling, general and administrative expenses to support those commercialization activities. These increases will likely include increased costs related to hiring of additional personnel and fees to outside consultants to support further marketing, legal, tax, planning and accounting activities.

Interest Income

Interest income consists of interest earned on our cash equivalents and investments.

Interest Expense

We incur interest expense on our convertible notes. Interest on our convertible notes consists of a 4% per annum fixed rate of interest and amortization of debt discount and amortization costs.

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Critical Accounting Estimates

The preparation of financial statements and related disclosures in conformity with U.S. generally accepted accounting principles (“GAAP”) and our discussion and analysis of our financial condition and operating results require our management to make judgments, assumptions and estimates that affect the amounts reported, including the amount of assets, liabilities, expenses and the disclosure of contingent assets and liabilities. Note 2, “Summary of Significant Accounting Policies,” of the Notes to Consolidated Financial Statements in Part II, Item 8 of this Annual Report describes the significant accounting policies and methods used in the preparation of our consolidated financial statements. Management bases its estimates on historical experience, known trends and events, and on various other assumptions it believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results may differ materially from these estimates under different assumptions or conditions.

While our significant accounting policies are described in more detail in the notes to our consolidated financial statements appearing elsewhere in this Annual Report, we believe the following accounting policies are the most critical for fully understanding and evaluating our financial condition and results of operations.

Intangible Assets, Net

Intangible assets, net are measured at their fair values as of the acquisition date or, in the case of commercial milestone payments, the date they become due. Intangible assets are generally amortized on a straight-line basis over their estimated useful lives. We base the useful lives and related amortization expense on the period of time we estimate the assets will generate net product sales or otherwise be used. We also periodically review the lives assigned to our intangible assets to ensure that our initial estimates do not exceed any revised estimated periods from which we expect to realize cash flows from the technologies. If a change were to occur in any of the above-mentioned factors or estimates, the likelihood of a material change in our reported results would increase.

We evaluate our intangible assets with finite lives for indications of impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. Factors that could trigger an impairment review include significant under-performance relative to expected historical or projected future operating results, significant changes in the manner of our use of the acquired assets or the strategy for our overall business or significant negative industry or economic trends. If this evaluation indicates that the value of the intangible asset may be impaired, we make an assessment of the recoverability of the net carrying value of the asset over its remaining useful life. If this assessment indicates that the intangible asset is not recoverable, based on the estimated undiscounted future cash flows of the technology over the remaining amortization period, we reduce the net carrying value of the related intangible asset to fair value and may adjust the remaining amortization period.

We make significant judgments in relation to the valuation of intangible assets resulting from asset acquisitions, particularly in the forecasts of future operating results that are used in the discounted cash flow valuation models. It is possible that plans may change and estimates used may prove to be inaccurate. If our actual results, or the plans and estimates used in future impairment analyses, are lower than the original estimates used to assess the recoverability of these assets, we could incur additional impairment charges.

Product Sales, Net

Revenues from direct product sales are recorded net of reserves established for applicable discounts and allowances that are offered within contracts with our customers, including amounts from payors and other third parties on behalf of our customers. For revenues from distributors and our licensed partner, Takeda, we record net product sales using the estimated variable consideration to be received. The transaction price, which may include fixed or variable consideration, may be subject to constraint and is included in the product sales price only to the extent that it is probable that a significant reversal of the amount of the cumulative revenue recognized will not occur in a future period. We recognize our best estimate of the consideration that we expect to receive when control of the inventory is transferred to our customer and revenue is recognized. For our distributor and licensed partner sales, such estimates may be more complex and include estimates as to if and when our distributors and licensed partner’s sales in the market will occur. These estimates are reviewed and updated as additional information, including in-market sales information of our authorized distributors and licensed partners, becomes known. Actual amounts may ultimately differ from our estimates. If actual results vary, we adjust these estimates, which could have an effect on earnings in the period of adjustment.

We are obligated to pay rebates for mandated discounts under the Medicaid Drug Rebate Program and other foreign government programs. Our rebate calculations may require estimates based upon our actual historical experience, customer and payor mix and revenue projections. We update estimates and assumptions on a quarterly basis and record any

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necessary adjustments to revenue in the period identified. Estimated rebates are recorded as a reduction of revenue in the period the related sale is recognized. To date, actual government rebates have not differed materially from our estimates.

Cost of Sales

Prior to receiving approval from the FDA or other foreign regulatory authorities for a new medicine or new formulation, we expense all costs incurred related to the manufacture of such medicines as research and development expense because of the inherent risks associated with the development of a drug candidate, the uncertainty about the regulatory approval process and our lack of history for regulatory approval of drug candidates. Subsequent to receiving FDA or other foreign regulatory authority approval, when commercialization is considered probable and the future economic benefit is expected to be realized, we begin capitalizing inventory costs as incurred.

Cost of sales consist of raw materials, manufacturing costs, transportation and freight, amortization of capitalized intangible assets, royalties and direct and indirect overhead costs associated with the manufacturing and distribution of our approved products. Cost of sales may also include period costs related to certain manufacturing services and inventory adjustment charges.

We analyze our inventory levels quarterly for obsolescence and, if required, adjust inventory to its net realizable value for quantities in excess of expected demand. The analysis uses quantitative forecast and historical demand considerations in combination with shelf life and stop sell dates in our estimates to evaluate inventory that may not be sellable. The resulting adjustments are recognized as Cost of Sales.

Accrued Research and Development Expenses

As part of the process of preparing our consolidated financial statements, we are required to estimate our accrued expenses as of each balance sheet date. This process involves reviewing open contracts and purchase orders, communicating with our personnel to identify services that have been performed on our behalf and estimating the level of service performed and the associated cost incurred for the service when we have not yet been invoiced or otherwise notified of the actual cost. We accrue and expense clinical trial activities performed by third parties based upon estimates of the proportion of work completed over the life of the individual study and patient enrollment rates in accordance with agreements established with clinical research organizations, clinical trial sites and other vendors associated with the clinical trials. We determine the estimates by reviewing contracts, vendor agreements and purchase orders and through discussions with internal clinical personnel and external service providers as to the progress or stage of completion of trials or services and the agreed-upon fee to be paid for such services.

We make estimates of accrued expenses as of each balance sheet date based on facts and circumstances known to us at that time. We periodically confirm the accuracy of our estimates with the service providers and make adjustments, if necessary. If the actual timing of the performance of services or the level of effort varies from the estimate, we will adjust the accrual accordingly. Nonrefundable advance payments for goods and services, including fees for process development or manufacturing and distribution of clinical supplies that will be used in future research and development activities, are deferred and recognized as expense in the period that the related goods are consumed or services are performed.

Although we do not expect our estimates to be materially different from amounts actually incurred, if our estimates of the status and timing of services performed differ from the actual status and timing of services performed, it could result in us reporting amounts that are too high or too low in any particular period. To date, there have been no material differences between our estimates of such expenses and the amounts actually incurred.

Recent Accounting Pronouncements

A description of recent accounting pronouncements that may potentially impact our financial position, results of operations or cash flows is disclosed in Note 2 to our consolidated financial statements included elsewhere in this Annual Report.

Results of Operations for the Years Ended December 31, 2025 and 2024

In this section, we discuss the results of our operations for the year ended December 31, 2025, compared to the year ended December 31, 2024. For a discussion of the year ended December 31, 2024 compared to the year ended December 31, 2023, please refer to Part II, Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations, of our Annual Report on Form 10-K filed with the SEC on February 26, 2025.

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The following table summarizes our results of operations for the years ended December 31, 2025 and 2024 (in thousands):

Year Ended December 31, Change

Revenue:

License and other revenue — 479 (479)

Operating expenses:

Other income (expense):

Product Sales, Net

Product sales, net was $521.3 million for the year ended December 31, 2025, compared to $336.4 million for the year ended December 31, 2024. The increase in product sales, net was a result of our continued commercialization of Livmarli in the U.S. for the treatment of ALGS and PFIC, and in certain international markets directly or through distributor and licensed partner orders and from our sales of the Bile Acid Medicines.

The following table disaggregates total Product sales, net:

Year Ended December 31,

Product sales, net:

Cost of Sales

Cost of sales was $100.2 million for the year ended December 31, 2025, compared to $81.6 million for the year ended December 31, 2024. The increase in cost of sales was primarily a result of increases in royalty expenses of $17.9 million on net sales of Livmarli and the Bile Acid Medicines under licensing agreements, a $2.7 million increase primarily associated with increased PDUFA fees associated with the approval of our solid dose formulation in Livmarli and higher commercial supply chain costs of $3.5 million. These increases were partially offset by lower product cost of sales of $6.6 million primarily related to the Bile Acid Medicines, as we substantially completed the sale of acquired inventory in prior periods which had been recorded at fair value.

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Research and Development Expenses

The following table summarizes the period-over-period changes in research and development expenses relating to our product candidates in development for the periods indicated (in thousands):

Year Ended December 31, Change

Product-specific costs:

Non product-specific costs:

License fees (milestone payments) 5,000 — 5,000

Research and development expenses were $186.2 million for the year ended December 31, 2025, an increase of $45.5 million compared to the year ended December 31, 2024. The net increase was primarily due to:

•for volixibat programs, an increase of $19.8 million, primarily due to increased expenses associated with conduct of the PSC and PBC trials as well as manufacturing development expenses;

•for MRM-3379, an increase of $4.6 million, primarily due to our Phase 2 study in FXS and clinical manufacturing expenses partially offset by the prior year $7.5 million upfront payment associated with the in-licensing of MRM-3379;

•for personnel related and stock-based compensation expenses, an increase of $25.1 million, primarily driven by increased employee headcount and related equity award grants to support our development pipeline; and

•for license fees, an increase of $5.0 million due to a development milestone payment associated with our Livmarli Phase 3 EXPAND label expansion study, partially offset by

•for Livmarli, a decrease of $11.2 million, primarily due to completion of clinical trials including the biliary atresia, PFIC rollover study and a safety study, and lower general clinical support costs partially offset by increased expenses associated with the Livmarli Phase 3 EXPAND label expansion study.

Selling, General and Administrative Expenses

Selling, general and administrative expenses were $257.0 million for the year ended December 31, 2025, an increase of $54.8 million compared to the year ended December 31, 2024. The increase was primarily due to increases of $34.1 million in personnel and other compensation related expenses, including an increase of $13.8 million in stock-based compensation, reflecting an increase in the number of our selling, marketing and administrative employees to support commercial activities for our approved medicines, $6.6 million in advertising, promotion and medical affairs expenses associated with commercial activities, $5.5 million associated with legal, accounting and other outside services, $5.1 million in other general administrative expenses and $3.5 million of expenses associated with post marketing studies.

Liquidity and Capital Resources

Overview

Since inception, we have funded our operations primarily through debt, equity, revenue interest financings and cash from our product sales and license and collaboration revenue. We had $391.4 million of unrestricted cash, cash equivalents and investments as of December 31, 2025, compared to unrestricted cash, cash equivalents and investments of $292.8 million as of December 31, 2024. We have incurred significant operating losses since our inception. As of December 31, 2025, we had an accumulated deficit of $667.5 million, compared to $644.2 million as of December 31, 2024.

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In January 2026, immediately following the consummation of the Bluejay Acquisition, we completed the private placement of 3,385,149 shares of our common stock at a price per share of $68.48 and Pre-Funded Warrants to purchase 536,412 Warrant Shares at a price per share of $68.4799 per Pre-Funded Warrant, which equals the purchase price per share of our common stock sold in the first private placement, less $0.0001, the exercise price of each Pre-Funded Warrant, resulting in aggregate gross proceeds of approximately $268.5 million.

In August 2025, we filed an automatic shelf registration statement on Form S-3 with the SEC (the “2025 Shelf Registration”), which became effective upon filing, pursuant to which we may register for sale from time to time in one or more offerings an unlimited amount of any combination of our common stock, preferred stock, debt securities and warrants, so long as we continue to satisfy the requirements of a “well-known seasoned issuer” under SEC rules. This automatic shelf registration statement will remain in effect for up to three years from the date it became effective. As of December 31, 2025, we have not issued any securities pursuant to the 2025 Shelf Registration.

In November 2023, we entered into a Sales Agreement (the “2023 Sales Agreement”) with Leerink and Cantor Fitzgerald & Co. (the “Sales Agents”), pursuant to which we may, from time to time, sell up to an aggregate amount of $200.0 million of our common stock through the Sales Agents in an “at-the-market” offering (the “ATM Offering”). We are not required to sell shares under the 2023 Sales Agreement. Sales of our common stock, if any, under the 2023 Sales Agreement may be made in any transactions that are deemed to be “at the market offerings” as defined in Rule 415 under the Securities Act. We will pay a given designated Sales Agent a commission of up to 3.0% of the aggregate gross proceeds of any shares of common stock sold through it pursuant to the 2023 Sales Agreement. As of December 31, 2025, we have not issued any securities pursuant to the 2023 Sales Agreement.

In August 2023, we completed the Bile Acid Portfolio Acquisition for an aggregate purchase price of up to $445.0 million in cash, with $210.4 million paid at the closing and up to $235.0 million upon achievement of certain milestones based on specified amounts of annual net sales (tiered from $125.0 million to $500.0 million) of the Bile Acid Medicines. In connection with and immediately prior to the closing of the Bile Acid Portfolio Acquisition, we completed the private placement of 8,000,000 shares of our common stock at a price per share of $26.25, resulting in net proceeds of approximately $202.2 million, which we used to finance the upfront payment at the closing of the Bile Acid Portfolio Acquisition.

In April 2023, we completed an offering of $316.3 million aggregate principal of the Notes, which includes the exercise of the initial purchasers’ option in full. The offering resulted in net proceeds of $305.3 million after deducting the initial purchasers’ discounts and commissions and offering expenses. The terms of the Notes are further described in Note 10 to our consolidated financial statements. We used a portion of the net proceeds to repurchase the Revenue Interest Purchase Agreement (“RIPA”) at a call price of $192.7 million. Upon repurchase of the revenue interests from the Purchasers, the RIPA, in accordance with its terms, was terminated.

Based on our current and anticipated level of operations and cash generated from sales of our approved medicines, we believe our existing unrestricted cash, cash equivalents and investments will be sufficient to fund current operations through at least the next 12 months from the filing of this Annual Report and beyond.

While we generated net income in the third quarter of 2025, we anticipate that we will continue to incur net losses for the foreseeable future as we continue research efforts and the development of our product candidates, including development of brelovitug which we acquired in January 2026, continue commercialization activities for our approved medicines and potentially expand into additional markets, hire additional staff, including clinical, scientific, operational, financial and management personnel and pay potential development milestones. Net loss is also impacted by significant non-cash charges related to stock-based compensation and amortization of intangible assets.

Our primary use of cash is to fund operating expenses. Our cash flow from operating activities may experience material fluctuations due to a number of factors, including the timing of inventory builds, accounts receivable collections, receipt and payment of invoices, development or commercial milestone payments, as well as the magnitude and timing of cash receipts from our product revenues associated with periodic orders from Takeda and our distributors.

Our principal source of liquidity is product revenue from sales of our approved medicines. For the year ended December 31, 2025, liquidity from product revenues was sufficient to fund current operations. There can be no assurances that future revenues will continue to be sufficient to fund operations. For example, as a result of the Bluejay Acquisition, we expect a significant increase in research and development expenses over the next few years as we continue the clinical development of brelovitug. Should product revenues from our currently approved medicines, our current product candidates or any future product candidates, if approved, be insufficient to fund operations, we would expect to finance our cash needs through a combination of cash on hand, equity offerings, debt financings and potential collaboration, license or development agreements. Our primary cash needs are for day-to-day operations and to fund our working capital requirements. To the extent that we raise additional capital through the sale of equity or convertible debt securities,

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ownership interest will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect rights as a stockholder. Debt financing and preferred equity financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends.

If we raise additional funds through collaborations, strategic alliances or marketing, distribution or licensing arrangements with third parties, we may be required to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates or to grant licenses on terms that may not be favorable to us. Additionally, if the equity and credit markets deteriorate from adverse geopolitical and macroeconomic developments or otherwise, it may make any necessary debt or equity financing more difficult, more costly and more dilutive. If we are unable to raise additional funds through equity or debt financings when needed, we may be required to delay, limit, reduce or terminate our drug development or future commercialization efforts or grant rights to develop and market product candidates that we would otherwise prefer to develop and market ourselves.

Material Cash Requirements

In addition to ongoing capital needs to fund our ongoing operations, our material cash requirements include the following contractual and other obligations.

In April 2023, we completed an offering of $316.3 million aggregate principal of the Notes, which includes the exercise of the initial purchasers’ option in full. The offering resulted in net proceeds of $305.3 million after deducting the initial purchasers’ discounts and commissions and offering expenses. The Notes are our senior, unsecured obligations and accrue interest at a rate of 4.00% per annum, payable semi-annually in arrears on May 1 and November 1 of each year. The Notes will mature on May 1, 2029, unless earlier converted, redeemed or repurchased by us. The terms of these Notes are further described in Note 10 to our consolidated financial statements.

During the fourth quarter of 2025, the last reported sale price of our common stock exceeded 130% of the conversion price of the Notes for more than 20 trading days during the 30 consecutive trading days ended December 31, 2025. As a result, the Notes are convertible at the option of the holders of the Notes during the first quarter of 2026, the quarter immediately following the quarter when the conditions were met, as stated in the terms of the Notes. If holders of the Notes elect to convert their Notes, we may elect to settle such conversions by paying or delivering, as applicable, cash, shares of our common stock or a combination of cash and shares of our common stock. During the year ended December 31, 2025, holders of the Notes converted an immaterial amount of principal balance.

Under the Shire License Agreement, the Asset Purchase Agreement with Travere, license agreement with Enthorin Therapeutics, LLC (“Enthorin”), Bluejay’s license agreement with Novartis Pharma AG, which we acquired as part of the Bluejay Acquisition in January 2026 (see below), as well as our other license and acquisition agreements, we have payment obligations that are contingent upon future events such as our achievement of specified development, regulatory and commercial milestones and are required to make royalty payments in connection with the sale of products developed under those agreements. The amount and timing of milestone obligations are unknown or uncertain as we are unable to estimate the timing or likelihood of achieving the milestone events. Additionally, the amount of royalty payments are based upon future product sales, which we are unable to predict with certainty. These potential obligations are further described in Note 7 to our consolidated financial statements.

On January 23, 2026, we completed the acquisition of Bluejay. As consideration for the transaction, we paid $224.2 million in cash, net of cash acquired in the transaction, and 4,673,597 shares of Company common stock, subject in certain cases to deduction to satisfy applicable taxes, and will pay up to an aggregate of $25.8 million in cash and 522,375 shares of Company common stock, subject to deduction for taxes and certain holdbacks pursuant to the terms and conditions of the definitive acquisition agreement. Additionally, we are obligated to pay up to an aggregate of $200 million upon achievement of certain commercial milestones.

We additionally have contractual obligations for our operating leases for our corporate headquarters. These obligations are further described in Note 9 to our consolidated financial statements.

We enter into contracts in the normal course of business with clinical research organizations and clinical sites for the conduct of clinical trials, non-clinical research studies, professional consultants for expert advice and other vendors for clinical supply manufacturing or other services. These contracts generally provide for termination on notice, and therefore are cancellable contracts.

We enter into commercial inventory supply agreements that obligate us to firm commitments for the purchase of minimum order quantities, which may be material to our financial statements.

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Cash Flows

The following table provides a summary of the net cash flow activity for the periods indicated (in thousands):

Year Ended December 31,

Net cash provided by operating activities $ 55,827 $ 10,325

Net cash used in investing activities (23,954) (90,125)

Net cash provided by financing activities 40,142 17,699

Net Cash Provided by Operating Activities

Net cash provided by operating activities was $55.8 million for the year ended December 31, 2025, reflecting our net loss of $23.4 million partially offset by adjustments to net loss of $98.9 million. The adjustments consisted primarily of stock-based compensation expense, depreciation and amortization of our intangible assets and fixed assets and charges associated with excess and obsolete inventory and firm commitment losses. Additionally, cash provided by operating activities reflected changes in net operating assets of $19.7 million, primarily related to an increase in accounts receivable due to the growth from our product sales, payments made for the purchase of inventory and prepaid and other current assets, partially offset by an increase in accounts payable, accrued expenses and other liabilities resulting primarily from an increase in accrued sales deductions and royalties due to the growth from our product sales in the year ended December 31, 2025, and an increase in accrued expenses driven by our growth, including accrued expenses related to clinical studies and contract manufacturing activities.

Net cash provided by operating activities was $10.3 million for the year ended December 31, 2024, reflecting our net loss of $87.9 million partially offset by adjustments to net loss of $75.7 million. The adjustments consisted primarily of stock-based compensation expense, depreciation and amortization of our intangible assets and fixed assets and charges associated with excess and obsolete inventory and firm commitment losses. Additionally, cash provided by operating activities reflected changes in net operating assets of $22.6 million, primarily related to an increase in accounts payable, accrued expenses and other liabilities resulting primarily from an increase in accrued sales deductions and royalties due to the growth from our product sales in the year ended December 31, 2024, and an increase in accrued expenses driven by our growth, including accrued expenses related to clinical studies and contract manufacturing activities, partially offset by an increase in accounts receivable due to the growth from our product sales and payments made for the purchase of inventory.

Net Cash Used in Investing Activities

Net cash used in investing activities was $24.0 million for the year ended December 31, 2025, primarily due to purchases of investments partially offset by cash provided by the maturities of investments.

Net cash used in investing activities was $90.1 million for the year ended December 31, 2024, primarily due to purchases of investments resulting from the changing interest rate environment and milestone payments associated with the approval of Livmarli for cholestatic pruritus in patients with PFIC in the U.S. and for the treatment of PFIC in the EU, partially offset by proceeds from maturities of investments.

Net Cash Provided by Financing Activities

Net cash provided by financing activities was $40.1 million for the year ended December 31, 2025, due to proceeds from employee equity award exercises.

Net cash provided by financing activities was $17.7 million for the year ended December 31, 2024, due to proceeds from employee equity award exercises.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk.

Interest Rate Risk

Our cash, cash equivalents and investments as of December 31, 2025 consist of readily available checking and money market funds and investments. The primary objective of our investment activities is to preserve our capital to fund operations. We may invest in highly liquid and high-quality government and debt securities. As a result, our primary exposure to market risk is interest income sensitivity, which is affected by changes in the general level of U.S. interest rates. Due to the strategies we employ (including the short-term nature of the instruments in our portfolio and the low risk

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profile of our investments), as of the date of this report, we do not expect anticipated changes in interest rates to have a material effect on our interest rate risk in future reporting periods. For example, a hypothetical change in interest rates of 10% would not have a material impact on the fair market value of our cash equivalents and investments as of December 31, 2025. In addition, we maintain significant amounts of cash and cash equivalents at one financial institution that is in excess of federally insured limits.

We have outstanding $316.2 million aggregate principal of the Notes as of December 31, 2025. The interest rates on these Notes are fixed and therefore they do not expose us to risk related to changing interest rates. As of December 31, 2025, the approximate fair value of our Notes was $818.5 million.

Foreign Currency Rate Risk

Our operations include activities in the U.S., the Netherlands, Switzerland and certain other countries in Europe. As a result, our financial results may be affected by factors such as changes in foreign currency exchange rates or weak economic conditions in the foreign markets in which we sell our products. Our operating results are exposed to changes in foreign currency exchange rates between the U.S. Dollar (“USD”) and various foreign currencies, primarily the Euro and Swiss Franc. When the USD strengthens against these currencies, the relative value of the sales and operating expenses made in the respective foreign currency decreases. Conversely, when the USD weakens against these currencies, the relative value of such sales and operating expenses increases.

Based on our overall foreign currency denominated exposures as of December 31, 2025, we believe that a near-term 10% fluctuation of the USD exchange rate could result in a potential change in the fair value of our net assets and liabilities denominated in foreign currency by approximately $4.1 million. We expect to continue to enter into transactions based in foreign currencies that could be impacted by changes in the USD exchange rate.

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Item 8. Financial Statements and Supplementary Data.

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Reports of Independent Registered Public Accounting Firm (PCAOB ID: 42) 104

Consolidated Balance Sheets 107

Consolidated Statements of Operations 108

Consolidated Statements of Comprehensive Loss 109

Consolidated Statements of Stockholders’ Equity 110

Consolidated Statements of Cash Flows 111

Notes to Consolidated Financial Statements 112

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Report of Independent Registered Public Accounting Firm

To the Stockholders and the Board of Directors of Mirum Pharmaceuticals, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Mirum Pharmaceuticals, Inc. (the Company) as of December 31, 2025 and 2024, the related consolidated statements of operations, comprehensive loss, stockholders’ equity and cash flows for each of the three years in the period ended December 31, 2025, and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2025, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework), and our report dated February 25, 2026 expressed an unqualified opinion thereon.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective or complex judgments. The communication of the critical audit matter does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

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Inventory Costing

/s/ Ernst & Young LLP

We have served as the Company’s auditor since 2019.

San Mateo, California

February 25, 2026

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Report of Independent Registered Public Accounting Firm

To the Stockholders and the Board of Directors of Mirum Pharmaceuticals, Inc.

Opinion on Internal Control Over Financial Reporting

We have audited Mirum Pharmaceuticals, Inc.’s internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). In our opinion, Mirum Pharmaceuticals, Inc. (the Company) maintained, in all material respects, effective internal control over financial reporting as of December 31, 2025, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated balance sheets of the Company as of December 31, 2025 and 2024, the related consolidated statements of operations, comprehensive loss, stockholders’ equity and cash flows for each of the three years in the period ended December 31, 2025, and the related notes and our report dated February 25, 2026 expressed an unqualified opinion thereon.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management's Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects.

Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Ernst & Young LLP

San Mateo, California

February 25, 2026

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Mirum Pharmaceuticals, Inc.

Consolidated Balance Sheets

(In thousands, except share and per share data)

December 31,

Assets

Current assets:

Prepaid expenses and other current assets 18,140 11,784

Operating lease right-of-use assets 8,741 8,675

Liabilities and Stockholders’ Equity

Current liabilities:

Accrued expenses and other current liabilities 196,185 111,933

Operating lease liabilities, noncurrent 7,516 7,972

Commitments and contingencies

Stockholders’ equity:

Accumulated other comprehensive income (loss) 351 (373)

Total liabilities and stockholders’ equity $ 842,813 $ 670,754

The accompanying notes are an integral part of these consolidated financial statements.

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Mirum Pharmaceuticals, Inc.

Consolidated Statements of Operations

(In thousands, except share and per share data)

Year Ended December 31,

Revenue:

License and other revenue — 479 7,500

Operating expenses:

Other income (expense):

Loss from termination of revenue interest purchase agreement — — (49,076)

Net loss per share, basic and diluted $ (0.47) $ (1.85) $ (4.00)

The accompanying notes are an integral part of these consolidated financial statements.

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Mirum Pharmaceuticals, Inc.

Consolidated Statements of Comprehensive Loss

(In thousands)

Year Ended December 31,

Other comprehensive income (loss):

Unrealized gain on available-for-sale investments 10 130 230

The accompanying notes are an integral part of these consolidated financial statements.

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Mirum Pharmaceuticals, Inc.

Consolidated Statements of Stockholders’ Equity

(In thousands, except share and per share data)

Shares Amount

Other comprehensive income — — — — 1,861 1,861

Other comprehensive loss — — — — (2,017) (2,017)

Conversion of convertible notes, net 752 — 24 — — 24

Other comprehensive income — — — — 724 724

The accompanying notes are an integral part of these consolidated financial statements.

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Mirum Pharmaceuticals, Inc.

Consolidated Statements of Cash Flows

(In thousands)

Year Ended December 31,

Operating activities

Reconciliation of net loss to net cash provided by operating activities:

Inventory reserves and firm commitment losses 2,889 2,614 9,257

Amortization of debt discount and offering costs 1,739 1,661 1,117

Loss from termination of revenue interest purchase agreement — — 49,076

Non-cash interest expense related to the revenue interest liability — — 5,060

Unrealized foreign exchange (gain) loss (1,720) (1,231) 1,764

Change in operating assets and liabilities:

Accounts payable, accrued expenses and other liabilities 50,103 40,312 30,778

Investing activities

Purchase of property and equipment (954) (993) (109)

Cash paid for acquisition — — (212,762)

Payments made for additions to intangible assets — (20,000) (20,000)

Financing activities

Proceeds from issuance of convertible notes, net — — 305,304

Payments of deferred offering costs — — (281)

Payments on revenue interest liability — — (195,577)

Supplemental disclosure of cash flow information:

Operating cash flows paid for operating lease $ 2,590 $ 1,274 $ 1,079

Non-cash operating, investing and financing activities:

Accrued milestone payments classified as intangible assets, net $ 35,000 $ — $ —

Stock-based compensation capitalized to inventory $ 688 $ 1,122 $ 822

Conversion of convertible notes, net into shares of common stock $ 24 $ — $ —

The accompanying notes are an integral part of these consolidated financial statements.

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Mirum Pharmaceuticals, Inc.

Notes to Consolidated Financial Statements

1. Organization and Description of Business

Mirum Pharmaceuticals, Inc. (the “Company”) was incorporated in the State of Delaware on May 2, 2018, and is headquartered in Foster City, California. The Company is a biopharmaceutical company dedicated to transforming the treatment of rare diseases. The Company commenced significant operations in November 2018.

As of December 31, 2025, the Company had three approved medicines: LIVMARLI® (maralixibat) (“Livmarli”), CHOLBAM® (cholic acid) capsules (“Cholbam”), and CTEXLI® (chenodiol) tablets (“Ctexli”). Livmarli is approved for the treatment of cholestatic pruritus in patients with Alagille syndrome (“ALGS”) in the United States (“U.S.”), the European Union (“EU”) and various other countries around the world and for cholestatic pruritus in patients with progressive familial intrahepatic cholestasis (“PFIC”) in the U.S., Canada and Japan and for the treatment of PFIC in the EU.

On August 31, 2023, the Company completed the acquisition of assets of Travere Therapeutics, Inc. (“Travere”) that are primarily related to the development, manufacture (including synthesis, formulation, finishing or packaging) and commercialization of chenodiol and Cholbam (also known as Kolbam, and together with chenodiol, the “Bile Acid Medicines”), two therapies addressing rare diseases in high-need settings (such acquisition, the “Bile Acid Portfolio Acquisition”) (Note 7). Cholbam is FDA-approved for the treatment of bile acid synthesis disorders due to single enzyme deficiencies and adjunctive treatment of peroxisomal disorders in patients who show signs or symptoms of liver disease. Ctexli at the time of acquisition was approved for the treatment of radiolucent stones in the gallbladder, had received medical necessity recognition by the FDA for the treatment of cerebrotendinous xanthomatosis (“CTX”) and was commercialized under the brand name Chenodal. Subsequently, in February 2025, the Company received FDA approval for chenodiol tablets for the treatment of CTX in adults, which is commercialized under the brand name Ctexli.

The Company’s development pipeline consists of the clinical-stage product candidate volixibat, MRM-3379 and indication expansion opportunities for Livmarli.

On January 23, 2026, the Company acquired Bluejay Therapeutics, Inc. (“Bluejay”). With the completion of the acquisition, the Company adds worldwide rights to brelovitug, a late-stage, fully human monoclonal antibody for chronic hepatitis delta virus (HDV), a rare and severe liver disease.

The Company views its operations and manages its business as one operating segment. The Company determined its operating segment on the same basis that it uses to evaluate its performance internally. See Note 14 Segment Reporting for further details.

Liquidity

The Company has a limited operating history, has incurred significant operating losses since its inception, and the revenue and income potential of the Company’s business and market are unproven. As of December 31, 2025, the Company had an accumulated deficit of $667.5 million and unrestricted cash, cash equivalents and investments of $391.4 million. The Company’s convertible notes are convertible at the option of the holders during the first quarter of 2026. If holders of the convertible notes elect to convert, the Company may elect to settle such conversions in cash, common stock or a combination of the two. The Company believes that its unrestricted cash, cash equivalents and investments of $391.4 million as of December 31, 2025 provide sufficient capital resources to continue its operations for at least twelve months from the issuance date of the accompanying consolidated financial statements.

2. Summary of Significant Accounting Policies

Basis of Presentation

The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. The Company translates the financial statements of its foreign subsidiaries using end-of-period exchange rates for assets and liabilities and average exchange rates during each reporting period for results of operations. All intercompany balances and transactions among the consolidated entities have been eliminated in consolidation. The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”).

Use of Estimates

The preparation of consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that impact the reported amounts of assets, liabilities, revenues and expenses and the disclosure

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of contingent assets and liabilities in the financial statements and accompanying notes. These estimates and assumptions are based upon historical experience, knowledge of current events and various other factors believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities and the recording of expenses that are not readily apparent from other sources. Actual results could differ materially from those estimates.

The Company’s consolidated financial statements as of and for the year ended December 31, 2025 reflect the Company’s estimates of the impact of the geopolitical and macroeconomic environment, including the impact of inflation, tariffs and trade tensions and foreign exchange rate fluctuations. The duration and the scope of these conditions cannot be predicted; therefore, the extent to which these conditions will directly or indirectly impact the Company’s business, results of operations and financial condition, is uncertain. The Company is not aware of any specific event or circumstance that would require an update to its estimates, judgments and assumptions or a revision of the carrying value of the Company’s assets or liabilities as of the date of this filing.

Cash, Cash Equivalents and Restricted Cash

The Company considers all highly liquid investments that are readily convertible into cash without penalty and with original maturities of three months or less at the date of purchase to be cash equivalents. The carrying amounts reported in the consolidated balance sheets for cash and cash equivalents are valued at cost, which approximate their fair value.

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets that together reflect the same amounts shown in the consolidated statements of cash flows (in thousands):

As of December 31,

Total cash, cash equivalents, and restricted cash $ 298,165 $ 222,928

Concentrations of Credit Risk and Off-Balance Sheet Risk

Financial instruments that potentially subject the Company to a concentration of credit risk consist of cash and cash equivalents, accounts receivable and investments. The Company limits the amount of credit exposure by investing cash that is not required for immediate operating needs in money market funds, government obligations, corporate debt securities and/or commercial paper. Additionally, the Company has established guidelines regarding diversification of its investments and their maturities, which are designed to maintain principal and maximize liquidity. To date, the Company has not experienced any losses associated with this credit risk and continues to believe that this exposure is not significant.

The Company relies on a single third-party logistics provider (“3PL”) in each major market and a single specialty pharmacy for all of the Company’s sales of its approved medicines in the United States.

The Company sources materials and services through several vendors. Certain materials are sourced from a single vendor. The loss of certain vendors could result in a temporary disruption of the Company’s commercialization efforts.

As of December 31, 2025 and as of December 31, 2024, the Company did not have any customers that individually accounted for more than 10% of accounts receivable. For the years ended December 31, 2025, 2024 and 2023, the Company did not have revenue attributable to any one customer in excess of 10% of sales.

Investments

The Company classifies all investments in securities as available-for-sale. Management determines the appropriate classification of its investments in securities at the time of purchase. Investments with original maturities beyond three months at the date of purchase and which mature at, or less than twelve months from the balance sheet date, are classified as a current asset.

Investments are recorded at fair value, with unrealized gains and losses reported as accumulated other comprehensive income (loss) until realized, with the exception of any declines in fair value below the cost basis that are a result of a credit loss, which, if any, are reported in other income (expense), net in the current period through an allowance for credit losses. Each reporting period, the Company evaluates whether declines in fair values of its available-for-sale

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securities below their cost basis are a result of credit loss or other factors and whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. This evaluation consists of several qualitative and quantitative factors regarding the severity and duration of the unrealized loss, the creditworthiness of the security issuers, as well as the Company’s ability and intent to hold the available-for-sale security until a forecasted recovery occurs. Additionally, the Company assesses whether it has plans to sell the security or it is more likely than not it will be required to sell any available-for-sale securities before recovery of its amortized cost basis. The cost of debt securities is adjusted for amortization of premiums and accretion of discounts to maturity. Such amortization and accretion, as well as interest and dividends, are included in interest income. Realized gains and losses from the sale of available-for-sale securities, if any, are determined on a specific identification basis and are also included in other income (expense). To date, the Company has not identified any declines in fair value of its investments related to credit loss.

Fair Value of Financial Instruments

Fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement determined based on assumptions that market participants would use in pricing an asset or liability. The following fair value hierarchy distinguishes between observable and unobservable inputs, which are categorized in one of the following levels:

Level 1: Observable inputs (unadjusted) such as quoted prices in active markets for identical assets or liabilities;

Level 2: Inputs, other than the quoted prices in active markets, that are observable either directly or indirectly for similar assets or liabilities; and

Level 3: Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.

Accounts Receivable

The Company has accounts receivable amounts due from product sales. The Company also has accounts receivable amounts due from license agreements for milestones achieved, but not yet paid. Amounts payable to the Company are recorded as accounts receivable when the Company’s right to consideration is unconditional. The Company estimates the allowance for credit losses using the current expected credit loss model. Under this model, the allowance for credit losses reflects the Company’s estimate of lifetime expected credit losses. The Company evaluates the collectability of the cash flows based on the risk of loss over the contractual life, even when that risk is remote, based on judgments about the creditworthiness of its customers, historical experience and other relevant information that is available to the Company. There was no allowance for credit losses as of December 31, 2025. There was no bad debt expense for the years ended December 31, 2025, 2024 and 2023.

Inventory

Inventory is valued at the lower of cost or net realizable value, with cost determined on a first-in, first-out (FIFO) basis. The Company periodically reviews the composition of inventory to identify excess, obsolete, slow-moving or otherwise unsaleable items. If unsaleable items are observed and there are no alternate uses for the inventory, the Company will record a write-down to net realizable value in the period that the decline in value is recognized through a charge to cost of sales. Furthermore, the Company periodically reviews its firm commitments for the purchase of minimum order quantities. If the minimum order quantities exceed the Company’s future demand, a net loss is accrued in cost of sales for such future inventory purchases. The determination of whether inventory costs will be realizable requires estimates by management. If actual market conditions are less favorable than projected by management, additional write-downs of inventory may be required.

Property and Equipment

Property and equipment are recorded at cost less accumulated depreciation. Depreciation is computed on a straight-line basis over the estimated useful lives of the related assets, ranging from three to five years. Leasehold improvements are amortized over the shorter of their useful lives or the related lease term. As of December 31, 2025, property and equipment consisted primarily of leasehold improvements of $0.8 million and furniture and equipment of $2.1 million. As of December 31, 2024, property and equipment consisted primarily of leasehold improvements of $0.2 million and furniture and equipment of $1.6 million. Accumulated depreciation as of December 31, 2025 and 2024 was $1.1 million and $0.7 million, respectively. Depreciation expense was $0.3 million, $0.5 million and $0.3 million for the years ended December 31, 2025, 2024 and 2023, respectively.

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Impairment of Long-Lived Assets

Long-lived assets are reviewed for indications of possible impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability is measured by comparison of the carrying amounts to the future undiscounted cash flows attributable to these assets. An impairment loss is recognized to the extent an asset group is not recoverable, and the carrying amount exceeds the projected discounted future cash flows arising from these assets. There were no impairments of long-lived assets for any of the periods presented.

Intangible Assets, Net

The Company accounts for asset acquisitions that do not meet the definition of a business using the cost accumulation method, whereby the cost of the acquisition, including certain transaction costs, is allocated to the asset (or assets) acquired on the basis of its (or their) relative fair value(s) on the measurement date. No goodwill is recognized in an asset acquisition.

Intangible assets are measured at their fair values as of the acquisition date or, in the case of commercial milestone payments, the date they become due. The evaluation of intangible assets includes assessing the amortization period for which the asset is expected to contribute to the future cash flows of the Company. Intangible assets with finite useful lives are amortized over their estimated useful lives on a straight-line basis. The Company tests its finite lived intangible assets for impairment annually or if events or changes in circumstances indicate that it is more likely than not that the asset is impaired. If it is determined that the asset is impaired, the carrying value is written down to its estimated fair value, with the related impairment charge recognized in the consolidated statements of operations in the period in which the impairment occurs. The Company has not recorded any impairments to its intangible assets for any of the periods presented.

Leases

The Company determines if a contractual arrangement is or contains a lease at inception. Operating lease right-of-use (“ROU”) assets represent the Company’s right to use an underlying asset during the lease term, and operating lease liabilities represent the Company’s obligation to make lease payments arising from the lease. Operating leases are included in ROU assets, current operating lease liabilities, and long-term operating lease liabilities on the accompanying consolidated balance sheets. Operating lease ROU assets and lease liabilities are initially recognized based on the present value of the future minimum lease payments over the lease term at commencement date calculated using the Company’s incremental borrowing rate applicable to the leased asset, unless the implicit rate is readily determinable. Operating lease ROU assets also include any lease payments made at or before lease commencement and exclude any lease incentives received. The Company determines the lease term as the noncancelable period of the lease and may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Leases with a term of 12 months or less are not recognized on the consolidated balance sheets. The Company’s leases do not contain any residual value guarantees. Lease expense for minimum lease payments is recognized as rent expense on a straight-line basis over the lease term. Variable lease payments include lease operating expenses.

Accrued Research and Development Expenses

The Company accrues and expenses clinical trial activities performed by third parties based upon estimates of the proportion of work completed over the life of the individual study and patient enrollment rates in accordance with agreements established with clinical research organizations and clinical trial sites. The Company determines the estimates by reviewing contracts, vendor agreements and purchase orders and through discussions with internal clinical personnel and external service providers as to the progress or stage of completion of trials or services and the agreed-upon fee to be paid for such services.

The Company makes estimates of accrued expenses as of each balance sheet date based on facts and circumstances known to the Company at that time. If the actual timing of the performance of services or the level of effort varies from the estimate, the Company will adjust the accrual accordingly. The Company has not experienced any material differences between accrued costs and actual costs incurred for the periods presented. Nonrefundable advance payments for goods and services are deferred and recognized as expense in the period that the related goods are consumed or services are performed.

Convertible Notes

The Company evaluates all conversion, repurchase and redemption features contained in a debt instrument to determine if there are any embedded features that require bifurcation as a derivative. The Company accounts for its

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convertible notes (refer to Note 10) as a liability equal to the proceeds received from issuance, including any embedded conversion features, net of the unamortized debt discount and offering costs in the accompanying consolidated balance sheets. The debt issuance and offering costs are amortized over the contractual term of the convertible notes, using the effective interest method, as interest expense in the accompanying consolidated statements of operations.

Revenue Interest Liability, Net

In relation to the revenue interest liability, net, associated with the Revenue Interest Purchase Agreement (“RIPA”) with Mulholland SA LLC, an affiliate of Oberland Capital LLC, as agent for the purchasers party thereto (the “Purchasers”), and the Purchasers that the Company entered into in December 2020, as amended in September 2021, the Company imputed interest expense using the effective interest rate method. The effective interest rate was calculated based on the rate that would enable the debt to be repaid in full over the anticipated life of the arrangement. The interest rate on the liability varied during the term of the agreement depending on a number of factors, including the level of actual and forecasted product sales, net. The Company evaluated the interest rate quarterly based on actual product sales, net and forecast product sales, net, utilizing the prospective method. In April 2023, the Company repurchased all future revenue interests (the “Revenue Interests”) and as a result, the RIPA was terminated in accordance with its terms (refer to Note 6).

Derivative Liability

The RIPA contained certain features that met the definition of being an embedded derivative requiring bifurcation as a separate compound financial instrument apart from the RIPA. The derivative liability was initially measured at fair value on issuance and was subject to remeasurement at each reporting period. In April 2023, the derivative liability was extinguished in connection with the termination of the RIPA (refer to Note 6).

Revenue Recognition

The Company recognizes revenue when a customer obtains control of promised goods or services, in an amount that reflects the consideration the Company expects to receive in exchange for those goods or services.

Product Sales, Net

The Company recognizes product sales, net when the customer obtains control of its product, which occurs at a point in time, typically upon delivery of the Company’s product to the customer.

Revenues from product sales are recorded at the net sales price, or the transaction price, which may include fixed or variable consideration for discounts, government rebates, co-pay assistance, returns and other allowances that are offered within contracts with a customer relating to the sale of the Company's approved medicines. Estimates of variable consideration are calculated using the actual product sales each reporting period and the nature of the variable consideration related to those sales. Overall, these estimates reflect the Company’s best estimate of the amount of consideration to which the Company expects to be entitled based on the terms of the contract. The amount of variable consideration that is included in the transaction price may be constrained and is included in product sales, net only to the extent that it is considered probable that a significant reversal in the amount of the cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. Estimates are reviewed and updated as additional information becomes known. Actual amounts of consideration ultimately received may differ materially from estimates. If actual results in the future vary from estimates, the Company will adjust these estimates, which would affect product sales, net and earnings in the period such variances are adjusted. Significant categories of sales discounts and allowances are as follows:

Government Rebates: The Company records rebates payable under Medicaid and other government programs as a reduction of revenue at the time product revenues are generated. The Company’s rebate calculations may require estimates, including estimates of customer mix, to determine which sales will be subject to rebates and the amount of such rebates. The Company updates its estimates and assumptions on a quarterly basis and records any necessary adjustments to revenue in the period identified. The liability for unpaid rebates is included in accrued expenses on the accompanying consolidated balance sheets. To date, actual government rebates have not differed materially from the Company’s estimates.

Other Incentives: Other incentives include a branded co-pay assistance program for eligible patients with commercial insurance in the United States. The branded co-pay assistance program assists commercially insured patients who have coverage for the Company's approved medicines and is intended to reduce each participating patient’s portion of the financial responsibility of the purchase price up to a specified dollar amount of assistance. The calculation of the accrual for co-pay assistance is based upon an identification of claims and the cost per claims associated with product that has been recognized as revenue. The Company records amounts paid under the brand specific co-pay assistance program

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for each patient as a reduction of revenue from product sales. To date, actual other incentives have not differed materially from the Company’s estimates.

Product Returns: The Company records revenue for product sales, net of estimated product returns. Customers have limited return rights related only to the product’s damage or defect identified upon delivery of the product. The Company estimates the amount of product sales that may be returned and records the estimate as a reduction of revenue and a refund liability in the period the related product revenue is recognized. To date, actual returns have not differed materially from the Company’s estimates.

The following table represents total revenues and disaggregates Product sales, net by approved medicine (in thousands):

Year Ended December 31,

Product sales, net:

License and other revenue — 479 7,500

The following table sets forth Product sales, net by geographic area based on the ship-to location (in thousands):

Year Ended December 31,

License and Collaboration Arrangements

The Company enters into collaborative arrangements with partners and analyzes the collaboration arrangements to assess whether they are within the scope of Collaborative Arrangements (Topic 808) (“Topic 808”) and determines whether such arrangements involve joint operating activities performed by parties that are both active participants in the activities and exposed to significant risks and rewards dependent on the commercial success of such activities. This assessment is performed throughout the life of the arrangement based on changes in the responsibilities of all parties in the arrangement. The accounting for some of the activities under collaboration arrangements may be subject to Revenue from Contracts with Customers (Topic 606) (“Topic 606”) for distinct units of account that are reflective of a vendor-customer relationship. For other elements of collaboration arrangements, such as reimbursements of certain development costs, the Company generally records reimbursements received as a reduction of research and development expenses.

In determining the appropriate amount of revenue to be recognized under Topic 606 as the Company fulfills its obligations under each of its agreements, the Company performs the following steps: (i) identification of the contracts with customers; (ii) determination of whether the promised goods or services are performance obligations including whether they are distinct in the context of the contract; (iii) determination and measurement of the transaction price, including any constraint on variable consideration; (iv) allocation of the transaction price to the performance obligations in the contract; and (v) recognition of revenue when (or as) the Company satisfies each performance obligation.

The terms of the Company’s license and collaborative research and development agreements include upfront license fees, research, development and other funding or reimbursements, milestone and other contingent payments for the achievement of defined collaboration objectives and certain development, regulatory and sales-based events, as well as royalties on sales of commercialized products. Arrangements that include upfront payments may require deferral of revenue recognition to a future period until the Company satisfies performance obligations under these arrangements.

A performance obligation is a promise in a contract to transfer a distinct good or service and is the unit of accounting in Topic 606. A contract’s transaction price is allocated among each distinct performance obligation based on relative standalone selling price and recognized as revenue when, or as, the applicable performance obligation is satisfied.

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If a license to the Company’s intellectual property is determined to be distinct from the other performance obligations identified in the arrangement, the Company recognizes revenues attributed to the license when the license is transferred to the customer and the customer is able to use and benefit from the license.

At the inception of each arrangement that includes development milestone payments, the Company evaluates whether the milestones are considered probable of being achieved and estimates the amount to be included in the transaction price as variable consideration using the most likely amount method or expected value method, depending on the nature of the contingency and the variable payments. If it is probable that a significant reversal of cumulative revenue recognized for the contract would not occur, the associated milestone value is included in the transaction price. Milestone payments that are not within the control of the Company or the licensee, such as regulatory approvals, are not generally considered probable of being achieved until those approvals are received. Given the high degree of uncertainty around the occurrence of these events, the Company generally determines the milestone and other contingent amounts to be fully constrained until the uncertainty associated with these payments is resolved. At the end of each reporting period, the Company re-evaluates the probability of achievement of any development milestones, and if necessary, adjusts its estimate of the transaction price. Any such adjustments would be recorded on a cumulative catch-up basis, which would affect revenues and earnings in the period of adjustment.

For arrangements that include sales-based royalties, including milestone payments based on the level of sales, the Company recognizes revenue at the later of (i) when or as the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied (or partially satisfied).

Accounting for these arrangements requires the Company to develop assumptions that require judgment to determine the stand-alone selling price of each performance obligation identified in the contract. The Company has never sold the performance obligations in its collaborative arrangements separately; therefore, an observable stand-alone selling price does not exist. Accordingly, the Company estimates a stand-alone selling price through maximizing the use of observable inputs such as market data, project cost estimates, and targeted margins.

Cost of Sales

Prior to receiving approval from the U.S. Food and Drug Administration (“FDA”) or other foreign regulatory authorities for a new medicine or new formulation, the Company expenses all costs incurred related to the manufacture of such medicines as research and development expense because of the inherent risks associated with the development of a drug candidate, the uncertainty about the regulatory approval process and the lack of history for the Company of regulatory approval of drug candidates. Subsequent to receiving FDA or other foreign regulatory authority approval, when commercialization is considered probable and the future economic benefit is expected to be realized, the Company begins capitalizing inventory costs incurred.

Cost of sales consist of manufacturing costs, transportation and freight, amortization of capitalized intangible assets, royalties and direct and indirect overhead costs associated with the manufacturing and distribution of the Company's approved products. Cost of sales may also include period costs related to certain manufacturing services and inventory adjustment charges.

Research and Development Expenses

Research and development expenses consists primarily of fees paid to contract research organizations and other vendors for clinical, non-clinical and manufacturing services, salaries and employee benefits, including stock-based compensation, consultant expenses, costs related to acquiring manufacturing materials, costs related to compliance with regulatory requirements and license payments related to acquiring intellectual property rights for the Company’s product candidates. Research and development expenses are expensed as incurred.

Selling, General and Administrative Expenses

Selling, general and administrative (“SG&A”) expenses relate to sales and marketing, finance, human resources, legal and other administrative activities. SG&A expenses consist primarily of personnel costs, facilities and overhead costs, outside marketing, advertising and legal expenses, and other general and administrative costs.

The Company expenses the costs of advertising, including promotional expenses, as incurred. Advertising expenses were $10.9 million, $11.5 million and $6.3 million for the years ended December 31, 2025, 2024 and 2023, respectively.

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Stock-Based Compensation

The Company recognizes stock-based compensation for all stock-based awards based on the grant date fair value of the award granted to employees and nonemployees, including members of its board of directors. For stock-based awards with service conditions, the fair value of the awards is recognized on a straight-line basis over the requisite service period in which the awards are expected to vest. For stock-based awards with performance vesting conditions, stock-based compensation is recognized when it is considered probable that the performance conditions will be satisfied. At each reporting period, the Company reassesses the probability of the achievement of the performance vesting conditions. Any change in stock-based compensation resulting from an adjustment in the vesting is treated as a cumulative catch-up in the period of adjustment. For stock-based awards with market conditions, stock-based compensation is recognized over the appropriate requisite service period. The Company accounts for forfeitures as they occur.

Foreign Currency

The consolidated financial statements are presented in U.S. dollars. The functional currency for most of the Company’s foreign subsidiaries is their local currency. Balance sheet accounts of international subsidiaries are translated at the current exchange rates as of the end of each accounting period. Income statement items are translated at average exchange rates for the period. The resulting translation adjustments are recorded as a separate component of stockholders’ equity.

Foreign currency transaction gains and losses are included in other income (expense), net in the consolidated statements of operations. Transaction gains and losses result primarily from fluctuations in exchange rates when intercompany receivables and payables are denominated in currencies other than the functional currency of its subsidiary that recorded the transaction. Unrealized foreign exchange gains and losses amounted to a $1.7 million and a $1.2 million gain for the years ended December 31, 2025 and 2024, respectively, and $1.8 million loss for the year ended December 31, 2023. Realized foreign exchange losses amounted to a $1.0 million loss for the year ended December 31, 2025 and were insignificant for the years ended December 31, 2024 and 2023.

Income Taxes

Income taxes are recorded using the liability method, under which deferred tax assets and liabilities are determined based on differences between the financial reporting and tax basis of assets and liabilities and are measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. Valuation allowances are recorded against deferred tax assets, including net operating losses and tax credits, when it is determined it is more-likely-than-not that some or all of the tax benefits will not be realized.

The Company accounts for uncertain tax positions in accordance with the provisions of Financial Accounting Standards Board (“FASB”) Accounting Standards Codification No. 740, Income Taxes (“ASC 740”). When uncertain tax positions exist, the Company recognizes the tax benefit of tax positions to the extent that the benefit would more likely than not be realized assuming examination by the taxing authority. The determination as to whether the tax benefit will more likely than not be realized is based upon the technical merits of the tax position as well as consideration of the available facts and circumstances.

Interest and penalties related to unrecognized tax benefits, if any, are recorded as a component of income tax expense.

Net Loss Per Share

Basic net loss per share is computed by dividing net loss by the weighted-average shares of common stock outstanding for the period, without consideration for potentially dilutive securities. Diluted net loss per share is computed by dividing the net loss by the weighted-average shares of common stock and potentially dilutive securities outstanding for the period determined using the treasury-stock and if-converted methods. Diluted net loss per share excludes the potential impact of the Company’s common stock subject to repurchase, common stock options, restricted stock units, contingently issuable employee stock purchase plan shares and common stock issuable upon conversion of convertible notes because their effect would be anti-dilutive due to the Company’s net loss.

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The following outstanding potential dilutive shares have been excluded from the calculation of diluted net loss per share for the periods presented due to their anti-dilutive effect:

As of December 31,

Recently Adopted Accounting Pronouncements

In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (“ASU 2023-09”). This new guidance is designed to enhance the transparency and decision usefulness of income tax disclosures. The amendments of this update are related to the rate reconciliation and income taxes paid. ASU 2023-09 is effective for fiscal years beginning after December 15, 2024. The Company adopted ASU 2023-09 in 2025 using a prospective method. For further information, refer to Note 13 Income Taxes.

Recent Accounting Pronouncements Not Yet Adopted

From time to time, new accounting pronouncements are issued by the FASB or other standard setting bodies and adopted by the Company as of the specified effective date. Unless otherwise discussed, the Company believes that the impact of recently issued standards that are not yet effective will not have a material impact on the accompanying consolidated financial statements and disclosures.

In November 2024, the FASB issued ASU 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (“ASU 2024-03”), which requires disclosure of disaggregated information about specific categories underlying certain income statement expense line items in the footnotes to the financial statements for both annual and interim periods. Subsequently in January 2025, the FASB issued ASU 2025-01, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date (“ASU 2025-01”) to clarify the effective date of ASU 2024-03. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027. Early adoption is permitted. The Company is currently assessing the impact that adopting this new accounting standard will have on its consolidated financial statements.

In July 2025, the FASB issued ASU 2025-05, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets (“ASU 2025-05”). The new guidance provides a practical expedient related to the estimation of expected credit losses for current accounts receivable and current contract assets that arise from transactions accounted for under FASB Accounting Standards Codification 606. ASU 2025-05 is effective for annual reporting periods beginning after December 15, 2025, and interim reporting periods within those annual reporting periods. Early adoption is permitted. The Company does not expect that adoption of this new accounting standard will have a material impact on its consolidated financial statements.

In September 2025, the FASB issued ASU 2025-06, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software (“ASU 2025-06”), to modernize the accounting guidance for the costs to develop software for internal use by aligning it with current development practices, especially agile and iterative methods. The guidance removes references to development stages and clarifies when capitalization of software costs should occur. The new guidance also clarifies disclosure requirements for all capitalized internal-use software costs, ASU 2025-06 is effective for annual reporting periods beginning after December 15, 2027, and interim reporting periods within those annual reporting periods. Early adoption is permitted as of the beginning of an annual reporting period. The Company is currently assessing the impact that adopting this new accounting standard will have on its consolidated financial statements.

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3. Fair Value Measurements

Financial assets and liabilities subject to fair value measurements on a recurring basis and the level of inputs used in such measurements by major security type are presented in the following table (in thousands):

Level 1 Level 2 Level 3 Total

Financial assets:

Level 1 Level 2 Level 3 Total

Financial assets:

U.S. treasury bills $ 2,964 $ — $ — $ 2,964

Corporate debt securities $ — $ 37,978 $ — $ 37,978

The carrying amounts of certain financial instruments such as cash and cash equivalents, restricted cash, accounts receivable, prepaid expenses, other current assets, accounts payable and accrued expenses as of December 31, 2025 and 2024 approximate their related fair values due to their short-term nature.

Money market funds and U.S. treasury bills are highly liquid investments and are actively traded. The pricing information on these investment instruments is readily available and can be independently validated as of the measurement date. This approach results in the classification of these securities as Level 1 of the fair value hierarchy.

Certain financial instruments classified within Level 2 of the fair value hierarchy include the types of instruments that trade in markets that are not considered to be active, but are valued based on quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency. The Company reviews trading activity and pricing for these investments as of each measurement date.

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4. Financial Instruments

The fair value and amortized cost of cash equivalents and available-for-sale investments by major security type are presented in the following table (in thousands):

AmortizedCost UnrealizedGain UnrealizedLoss EstimatedFairValue

Cash equivalents and investments:

Classified as:

Short-term investments 86,644

Long-term investments 8,105

Total cash equivalents and investments $ 349,125

AmortizedCost UnrealizedGain UnrealizedLoss EstimatedFairValue

Cash equivalents:

Classified as:

Short-term investments 57,812

Long-term investments 12,526

Total cash equivalents and investments $ 273,303

As of December 31, 2025, the remaining contractual maturities of available-for-sale debt securities were as follows (in thousands):

Estimated Fair Value

Due within one year $ 86,644

One to two years 8,105

During the years ended December 31, 2025 and 2024, there have been no significant realized gains or losses on available-for-sale investments, no investments have been in a continuous unrealized loss position for more than 12 months, and the Company did not recognize any credit losses on these securities.

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5. Balance Sheet Components

Inventory

Inventory consists of the following (in thousands):

December 31,

Intangible Assets, Net

The components of the Company’s intangible assets were as follows (in thousands, except for weighted-average remaining amortization period):

Amortization expense was $23.9 million, $23.1 million and $10.5 million for the years ended December 31, 2025, 2024 and 2023, respectively, and was included in cost of sales on the accompanying consolidated statements of operations.

The following table summarizes the estimated future amortization expense associated with the Company’s intangible assets as of December 31, 2025 (in thousands):

Amount

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Accrued Expenses

Accrued expenses consist of the following (in thousands):

December 31,

Accrued compensation and related benefits 47,276 32,248

Accrued contract manufacturing and non-clinical costs 8,721 7,555

Accrued loss on firm purchase commitments 2,107 1,898

Operating lease liabilities, current 2,139 1,709

Accrued milestone payment 35,000 —

Total accrued expenses and other current liabilities $ 196,185 $ 111,933

Other liabilities

Other liabilities consist of the following (in thousands):

December 31,

Noncurrent accrued sales deductions and other $ 3,586 $ —

Noncurrent accrued loss on firm purchase commitments 1,425 2,509

6. Revenue Interest Purchase Agreement

In December 2020, the Company entered into the RIPA, as amended in September 2021, with Oberland as agent for the Purchasers, and the Purchasers to obtain financing for the commercialization and further development of Livmarli and other working capital needs. Pursuant to the RIPA, the Company received a total of $115.0 million.

As consideration for such payments, the Purchasers had the right to receive the Revenue Interests from the Company based on annual product sales, net of Livmarli.

Under the RIPA, the Company had an option (the “Call Option”) to terminate the RIPA and repurchase future Revenue Interests at any time upon advance written notice. If the Call Option was exercised, the required repurchase price is 175.0% of the Cumulative Purchaser Payments (minus all payments the Company has made to the Purchasers in connection with the Revenue Interests), if such option was exercised prior to the third anniversary of the closing date, and 195.0% of the Cumulative Purchaser Payments (minus all payments Company has made to the Purchasers in connection with the Revenue Interests) if such option was exercised thereafter.

The Company recorded interest expense related to this arrangement of $5.1 million for the year ended December 31, 2023. No interest expense related to this arrangement was recorded for the years ended December 31, 2025 and 2024.

In April 2023, the Company exercised the Call Option and repurchased all future Revenue Interests. In connection with such repurchase, the Company made a payment of $192.7 million, or 175.0% of the Cumulative Purchaser Payments (minus all payments that were made to the Purchasers in connection with the Revenue Interests). As a result, the RIPA terminated in accordance with its terms.

The net loss from termination of the RIPA of $49.1 million, comprised of the $50.2 million loss related to the settlement of the revenue interest liability and the $1.1 million gain on the derecognition of the related derivative liability, was recorded in the accompanying consolidated statements of operations. As of December 31, 2025 and 2024, there were no outstanding balances related to the revenue interest liability and the derivative liability.

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7. Asset Acquisitions

License Agreement with Enthorin Therapeutics, LLC

In October 2024, the Company entered into a license agreement with Enthorin Therapeutics, LLC and Dart Neuroscience LLC (“License Agreement”), under which the Company acquired the worldwide rights to develop, manufacture and commercialize a compound designated as ENT-3379, renamed MRM-3379, in exchange for an upfront payment of $7.5 million and up to an additional $217.5 million upon the achievement of regulatory and sales-based milestones as well as mid-single digit percent royalties on any future sales of MRM-3379.

The Company accounted for the transaction as an asset acquisition as the set of acquired assets did not constitute a business and substantially all the fair value of the gross assets acquired was concentrated in a group of similar identifiable assets, namely, the intellectual property related to MRM-3379. The Company determined that the intellectual property assets acquired did not have an alternate future use and were not deemed to be commercially viable. Therefore, the upfront payment of $7.5 million was recorded as research and development expense in the year ended December 31, 2024.

Through December 31, 2025, no milestones have been achieved.

Asset Purchase Agreement with Travere Therapeutics, Inc.

In August 2023, the Company completed the Bile Acid Portfolio Acquisition. In accordance with the terms and conditions of the Asset Purchase Agreement entered into with Travere, the Company purchased from Travere substantially all of the assets related to its business of development, manufacturing (including synthesis, formulation, finishing or packaging) and commercialization of the Bile Acid Medicines. The Company paid $210.4 million upon closing of the transaction, and up to an additional $235.0 million is payable upon the achievement of certain milestones based on specified amounts of annual net sales of the Bile Acid Medicines. In connection with the Bile Acid Portfolio Acquisition, the Company recorded $198.5 million of developed technology intangible assets on the consolidated balance sheet at the time of the acquisition. As of December 31, 2025, the Company accrued $25.0 million for the achievement of product sales milestones associated with achievement of certain net product sales, which was recognized as an intangible asset in the accompanying consolidated balance sheet as of December 31, 2025. Through December 31, 2025, the Company paid or accrued $25.0 million for the achievement of product sales milestones associated with this agreement.

The Company is obligated to pay tiered royalties, based on licensing agreements acquired with the Bile Acid Medicines, with rates ranging from high single digit to mid-teens based on net sales of the Bile Acid Medicines.

Assignment and License Agreement with Shire International GmbH (Takeda)

In November 2018, the Company entered into an Assignment and License Agreement (the “Shire Agreement”) with Shire International GmbH (“Shire”), which was subsequently acquired by Takeda Pharmaceutical Company Limited (“Takeda”). Under the terms of the Shire Agreement, Shire granted the Company an exclusive, royalty bearing worldwide license to develop and commercialize its two product candidates, Livmarli and volixibat. As part of the Shire Agreement, the Company was assigned license agreements held by Shire with Satiogen, Pfizer Inc. (“Pfizer”) and Sanofi-Aventis Deutschland GmbH (“Sanofi”). The Company has the right to sublicense under the Shire Agreement and additionally has the right to sublicense under the Satiogen, Pfizer and Sanofi licenses subject to the terms of those license agreements.

The Company is obligated to pay Shire up to an aggregate of $109.5 million upon the achievement of certain clinical development and regulatory milestones for Livmarli in certain indications and an additional $25.0 million upon regulatory approval of Livmarli for each and every other indication. In addition, the Company is required to pay up to an aggregate of $30.0 million upon the achievement of certain clinical development and regulatory milestones for volixibat solely for the first indication sought. Upon commercialization, the Company is obligated to pay Shire commercial milestones on total licensed products up to an aggregate of $30.0 million. Through December 31, 2025 under this agreement, the Company paid or accrued $101.5 million for the achievement of various clinical development, regulatory and commercial milestones.

The Company is also obligated to pay tiered royalties with rates ranging from low double-digits to mid-teens based upon annual worldwide net sales for all licensed products; however, these royalties are reduced in part by royalties due under the Satiogen and Sanofi licenses, as discussed below, related to Livmarli and volixibat, as applicable. The Company’s royalty obligations will continue on a licensed product-by-licensed product and country-by-country basis until the later to occur of the expiration of the last valid claim in a licensed patent covering the applicable licensed product in such country, expiration of any regulatory exclusivity for the licensed product in a country and ten years after the first commercial sale of a licensed product in such country.

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In April 2024, the Company paid a $10.0 million milestone associated with the approval of Livmarli for the treatment of cholestatic pruritus in patients with PFIC five years of age and older (now twelve months of age and older) by the FDA. In July 2024, the Company paid a $10.0 million milestone associated with the approval of Livmarli for the treatment of PFIC in patients three months and older by the European Medicines Agency. In February 2025, the Company achieved a $5.0 million development milestone related to maralixibat, which was recognized in research and development expense in the accompanying consolidated statements of operations. In addition, as of December 31, 2025, the Company accrued $10.0 million for the achievement of a commercial milestone associated with product sales, which was recognized as an intangible asset in the accompanying consolidated balance sheet as of December 31, 2025. There were no volixibat development and regulatory milestones achieved during the years ended December 31, 2025, 2024 and 2023.

Pfizer License

Through the Shire Agreement, the Company was assigned a license agreement with Pfizer pursuant to which the Company obtained an exclusive, worldwide license to certain Pfizer know-how with a right to sublicense. Upon commercialization of any product utilizing the licensed product, the Company is required to pay to Pfizer a low single-digit royalty on net sales of product sold by the Company, its affiliates or sublicensees. The Company’s royalty obligations continue on a licensed product-by-licensed product basis until the eighth anniversary of the first commercial sale of such licensed product anywhere in the world.

Sanofi License

Through the Shire Agreement, the Company was assigned a license agreement with Sanofi pursuant to which the Company obtained an exclusive, worldwide license to certain patents and know-how with the right to sublicense to a third party subject to certain financial considerations. The Company is obligated to pay up to an aggregate of $36.0 million upon the achievement of certain regulatory, commercialization and product sales milestones. Additionally, upon commercialization, the Company is required to pay tiered royalties in the mid to high single-digit range based upon net sales of licensed products sold by the Company and sublicensees in a calendar year, subject to adjustments in certain circumstances. The Company’s royalty obligations continue on a licensed product-by-licensed product and country-by-country basis until the later to occur of the expiration of the last valid claim in a licensed patent covering the applicable licensed product in such country and ten years after the first commercial sale of a licensed product in such country. Royalty obligations under the Sanofi license are creditable against the royalty obligations to Shire under the Shire Agreement. The Company has not paid milestone payments pursuant to this agreement for the periods presented. Through December 31, 2025, no milestones have been achieved.

8. Collaboration and License Agreements

Licensing Agreement with Takeda

In September 2021, the Company entered into an exclusive licensing agreement with Takeda for the development and commercialization of Livmarli in Japan for ALGS, PFIC, and BA. Further, in October 2024, the parties entered into a commercial supply agreement. Under the terms of the agreements, Takeda is responsible for development and commercialization of Livmarli for licensed indications in Japan, while the Company is responsible for commercial supply to Takeda. In accordance with the agreements, in exchange for commercial inventory supply, the Company is eligible to receive a percentage of Takeda’s net sales, which range from high double digits declining to mid double digits over the first four years from commercial launch and thereafter remains at mid double digits. The Company records net product sales at the time control of the product is transferred, based on the estimated variable consideration.

9. Leases

The Company has operating leases for office spaces in various global locations, including its headquarters in Foster City, California, the lease for which was entered into in January 2024 with an initial lease term of approximately five years (the “Initial Lease”). In January 2026, the Company amended the Initial Lease (the “Amended Agreement”) to expand its headquarters office space by approximately 19,400 square feet (the “Expanded Space”) with a lease term of approximately five years from the commencement date. The Amended Agreement extends the lease term of the Initial Lease to be coterminous with the Expanded Space. The addition of the expanded space will result in approximately $10.6 million of additional base rent compared to the remaining payments of the Initial Lease.

In March 2025, the Company entered into an operating lease agreement for office space at an international location. The lease commenced in the second quarter of 2025 and has a lease term of approximately five years. In December 2025, the Company amended the terms of a lease at another international location to include additional space with a five-year lease term expiring January 2031 and a commencement date of December 2025. In addition, the amendment extended the lease term of the existing space to the same term.

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The following tables contain a summary of other information and the undiscounted future minimum payments pertaining to the Company’s operating leases that had commenced as of the end of the periods presented:

Weighted-average incremental borrowing rate 7.4 %

Weighted-average remaining lease term (in years) 4.0 years

Years Ended December 31, UndiscountedRent Payments(in thousands)

Thereafter 21

Total undiscounted lease payments 11,122

Less: imputed interest (1,467)

Total lease liability $ 9,655

Rent expense was $2.4 million, $1.8 million and $0.8 million for the years ended December 31, 2025, 2024 and 2023, respectively. Variable lease payments for the years ended December 31, 2025, 2024 and 2023 were insignificant.

10. Convertible Notes

In April 2023, the Company issued $316.3 million aggregate principal amount of its 4.00% Convertible Senior Notes due 2029 (the “Notes”) in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended. The Notes are subject to the terms and conditions of an Indenture (the “Indenture”) between the Company and U.S. Bank Trust Company, National Association, as trustee.

The net proceeds from the issuance of the Notes were $305.3 million, after deducting the initial purchasers’ discounts and commissions and offering expenses.

The Notes are the Company’s senior, unsecured obligations and are (i) senior in right of payment to any of the Company’s indebtedness that is expressly subordinated to the Notes in right of payment; (ii) equal in right of payment to any of the Company’s indebtedness that is not so subordinated; (iii) effectively subordinated to any of the Company’s secured indebtedness, to the extent of the value of the collateral securing that indebtedness; and (iv) structurally subordinated to all indebtedness and other liabilities, including trade payables, and (to the extent the Company is not a holder thereof) preferred equity, if any, of the Company’s subsidiaries.

The Notes accrue interest at a rate of 4.00% per annum, payable semi-annually in arrears on May 1 and November 1 of each year, beginning on November 1, 2023. The Notes will mature on May 1, 2029, unless earlier converted, redeemed or repurchased by the Company. Before January 2, 2029, noteholders will have the right to convert their Notes only in the following circumstances:

(i)during any calendar quarter (and only during such calendar quarter) commencing after the calendar quarter ending on June 30, 2023, if the last reported sale price per share of the Company’s common stock exceeds 130% of the conversion price for the Notes for each of at least 20 trading days, whether or not consecutive, during the 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter;

(ii)during the five consecutive business days immediately after any 10 consecutive trading day period (such 10 consecutive trading day period, the “measurement period”) if the trading price per $1,000 principal amount of Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price per share of the common stock on such trading day and the conversion rate on such trading day;

(iii)upon the occurrence of certain corporate events or distributions on the common stock, as described in the Indenture; and

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(iv)if the Company calls such Notes for redemption.

Additionally, noteholders will have the right to convert their Notes at any time from January 2, 2029 until the close of business on the scheduled trading day immediately before the maturity date. The Company may settle conversions by paying or delivering, as applicable, cash, shares of its common stock or a combination of cash and shares of its common stock, at the Company’s election. The initial conversion rate for the Notes is 31.5075 shares of common stock per $1,000 principal amount of Notes, which represents an initial conversion price of approximately $31.74 per share of common stock. The conversion rate and conversion price will be subject to customary adjustments upon the occurrence of certain events. In addition, if certain corporate events that constitute a “Make-Whole Fundamental Change” (as defined in the Indenture) occur, then the conversion rate will, in certain circumstances, be increased for a specified period of time.

During the fourth quarter of 2025, the last reported sale price of the Company’s common stock exceeded 130% of the conversion price of the Notes for more than 20 trading days during the 30 consecutive trading days ended December 31, 2025. As a result, the Notes are convertible at the option of the holders of the Notes during the first quarter of 2026, the quarter immediately following the quarter when the conditions were met, as stated in the terms of the Notes.

The Company may not redeem the Notes at its option at any time before May 5, 2026. The Notes are redeemable, in whole or in part (subject to the partial redemption limitation described below), at the Company’s option at any time, and from time to time, on or after May 5, 2026 and, in the case of a partial redemption, on or before the 50th scheduled trading day immediately before the maturity date, at a cash redemption price equal to the principal amount of the Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date, but only if the last reported sale price per share of the Company’s common stock exceeds 130% of the conversion price on (i) each of at least 20 trading days, whether or not consecutive, during the 30 consecutive trading days ending on, and including, the trading day immediately before the date the Company sends the related redemption notice; and (ii) the trading day immediately before the date the Company sends such notice. In addition, calling any Note for redemption will constitute a Make-Whole Fundamental Change with respect to that Note, in which case the conversion rate applicable to the conversion of that Note will be increased in certain circumstances if it is converted after it is called for redemption. Pursuant to the partial redemption limitation, the Company may not elect to redeem less than all of the outstanding Notes unless at least $75.0 million aggregate principal amount of Notes are outstanding and not called for redemption as of the time the Company sends the related redemption notice.

If a “Fundamental Change” (as defined in the Indenture) occurs, then, subject to a limited exception for certain cash mergers, noteholders may require the Company to repurchase their Notes at a cash repurchase price equal to the principal amount of the Notes to be repurchased, plus accrued and unpaid interest, if any, to, but excluding, the fundamental change repurchase date. The definition of Fundamental Change includes certain business combination transactions involving the Company and certain de-listing events with respect to the Company’s common stock.

The Indenture contains customary events of default with respect to the Notes and provides that upon certain events of default occurring and continuing, the Trustee may, and the Trustee at the request of holders of at least 25% in principal amount of the Notes shall, declare all principal and accrued and unpaid interest, if any, of the Notes to be due and payable. In case of certain events of bankruptcy, insolvency or reorganization, involving the Company or a significant subsidiary, all of the principal of and accrued and unpaid interest on the Notes will automatically become due and payable.

As of December 31, 2025 and 2024, the Notes consisted of the following (in thousands):

December 31,

Unamortized debt discount and issuance costs (6,429) (8,168)

The Company incurred $10.9 million of transaction costs related to the issuance of the Notes, which are being amortized to interest expense over the term of the Notes using the effective interest method. As of December 31, 2025, the

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remaining amortization period of the debt discount was approximately 3.3 years and the effective interest on the Notes was 4.6%. The following table sets forth interest expense recognized related to the Notes (in thousands):

Year Ended December 31,

Amortization of debt discount and issuance costs 1,739 1,661 1,120

As of December 31, 2025 and 2024, the estimated fair value of the Notes was $818.5 million and $481.9 million, respectively. The fair values were determined based on the quoted price of the convertible notes in an inactive market on the last trading day of the reporting period and has been classified as Level 2 in the fair value hierarchy.

11. Stockholders’ Equity

Common Stock

In August 2025, the Company filed an automatic shelf registration statement on Form S-3 with the SEC (the “2025 Shelf Registration”), which became effective upon filing, pursuant to which the Company may register for sale from time to time in one or more offerings an unlimited amount of any combination of the Company’s common stock, preferred stock, debt securities and warrants, so long as the Company continues to satisfy the requirements of a “well-known seasoned issuer” under SEC rules. This automatic shelf registration statement will remain in effect for up to three years from the date it became effective. As of December 31, 2025, the Company had not issued any securities pursuant to the 2025 Shelf Registration.

In November 2023, the Company entered into a Sales Agreement (the “2023 Sales Agreement”) with Leerink and Cantor Fitzgerald & Co. (the “Sales Agents”), pursuant to which the Company may, from time to time, sell up to an aggregate amount of $200.0 million of its common stock through the Sales Agents in an “at-the-market” offering (the “ATM Offering”). The Company is not required to sell shares under the 2023 Sales Agreement. Sales of the Company’s common stock, if any, under the 2023 Sales Agreement may be made in any transactions that are deemed to be “at the market offerings” as defined in Rule 415 under the Securities Act. The Company will pay a given designated Sales Agent a commission of up to 3.0% of the aggregate gross proceeds of any shares of common stock sold through such Sales Agent pursuant to the 2023 Sales Agreement. As of December 31, 2025, the Company had not issued any securities pursuant to the 2023 Sales Agreement.

In August 2023, in connection with and immediately prior to the closing of the Bile Acid Portfolio Acquisition, the Company completed the private placement of 8,000,000 shares of the Company’s common stock at a price per share of $26.25, resulting in net proceeds of approximately $202.2 million, which the Company used to finance the upfront payment at the closing of the Bile Acid Portfolio Acquisition.

Common Stock Reserved for Issuance

Common stock reserved for issuance is as follows:

Year Ended December 31,

Common stock issuable upon conversion of convertible notes 9,963,490 9,964,247

12. Stock-Based Compensation

Equity Incentive Plans

In November 2018, the Company adopted the 2018 Equity Incentive Plan (the “2018 Plan”), which permits the granting of stock awards and incentive and nonstatutory stock options to employees, directors and consultants of the Company.

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In July 2019, the Company’s board of directors and stockholders approved and adopted the 2019 Equity Incentive Plan (the “2019 Plan”). The 2019 Plan became effective on July 17, 2019. Under the 2019 Plan, the Company may grant stock options, stock appreciation rights, restricted stock, restricted stock units and other stock or cash-based awards to individuals who are then employees, officers, directors or consultants of the Company. Shares subject to outstanding awards under the 2018 Plan as of the effective date of the 2019 Plan that are subsequently canceled, forfeited or repurchased by the Company will be added to the shares reserved under the 2019 Plan. In addition, the number of shares of common stock available for issuance under the 2019 Plan will be automatically increased on the first day of each calendar year during the ten-year term of the 2019 Plan, beginning with January 1, 2020 and ending with January 1, 2029, by an amount equal to 5% of the outstanding number of shares of the Company’s common stock on December 31st of the preceding calendar year or such lesser amount as determined by the Company’s board of directors. As of December 31, 2025, 2,285,219 shares of common stock were available for issuance under the 2019 Plan.

In March 2020, the compensation committee of the Company’s board of directors approved and adopted the 2020 Inducement Plan (the “2020 Inducement Plan”). Under the 2020 Inducement Plan, the Company may grant nonstatutory stock options, stock appreciation rights, restricted stock and restricted stock units to new employees entering into employment with the Company in accordance with Nasdaq Listing Rule 5635(c)(4). Through December 31, 2025, the Company’s board of directors authorized 5,500,000 shares of the Company’s common stock for future issuance. As of December 31, 2025, 1,439,708 shares of common stock were available for issuance under the 2020 Inducement Plan.

Stock Options

The following table summarizes stock option activity during the year ended December 31, 2025 (in thousands, except share and per share data):

Intrinsic value is calculated as the difference between the exercise price of the underlying options and the fair value of the common stock at December 31, 2025 or on the date of exercise, for the options that had exercise prices that were lower than the per share fair value of the common stock on the date of exercise. The weighted-average grant date fair value per share of stock options granted during the years ended December 31, 2025, 2024 and 2023 was $32.71, $20.02 and $18.25 per share, respectively. The total intrinsic value of options exercised during the years ended December 31, 2025, 2024 and 2023 was $123.7 million, $23.1 million and $5.7 million, respectively. As of December 31, 2025, the total unrecognized stock-based compensation related to unvested stock option awards granted was $70.3 million, which the Company expects to recognize over a weighted-average period of approximately 2.7 years.

The fair value of each employee and non-employee stock option grant is estimated on the date of grant using the Black-Scholes option-pricing model. Due to the Company’s limited operating history and a lack of company specific historical and implied volatility data, the expected stock price volatility was based upon the weighting of the Company’s historical volatility and the historical volatility of a peer group of publicly traded companies. The historical volatility data was computed using the daily closing prices for the Company’s and its peer companies’ shares during the equivalent period of the calculated expected term of the stock-based awards. Due to the lack of historical exercise history, the expected term of the Company’s stock options for employees has been determined utilizing the “simplified” method for awards. The risk-free interest rate is determined by reference to the U.S. Treasury yield curve in effect at the time of grant of the award for time periods approximately equal to the expected term of the award. Expected dividend yield is zero based on the fact that the Company has never paid cash dividends and does not expect to pay any cash dividends in the foreseeable future.

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The following assumptions were used to estimate the fair value of stock option awards granted during the following periods:

Year Ended December 31,

Expected dividend yield — — —

Restricted Stock Units

The following table summarizes the activity under the Company’s restricted stock units for the year ended December 31, 2025:

Number ofAwards Weighted-Average Grant DateFair Value per Award

The fair value of restricted stock unit (“RSU”) awards granted to employees and nonemployees is equal to the closing market price of the Company’s common stock on the grant date.

As of December 31, 2025, the total unrecognized stock-based compensation related to restricted stock unit awards granted was $35.6 million, which the Company expects to recognize over a weighted-average period of approximately 1.9 years.

Performance Stock Units

The fair value of performance stock units (“PSUs”) granted to employees is equal to the closing market price of the Company’s common stock on the grant date. PSUs are subject to vest only if certain specified sales-based criteria are achieved and the employees’ continued service with the Company. As of December 31, 2025, certain specified sales-based criteria were deemed probable of achievement or already achieved. Stock-based compensation for PSUs is recognized over the service period beginning in the period the Company determines it is probable that the performance criteria will be achieved. PSUs generally vest over a three-year service period. The number of shares earned is adjusted based on the specified sales-based criteria achievement.

The following table summarizes the activity under the Company’s performance stock units in base units for the year ended December 31, 2025:

Number ofAwards Weighted-Average Grant DateFair Value per Award

As of December 31, 2025, the total unrecognized stock-based compensation related to performance stock units granted was $9.0 million, which the Company expects to recognize over a weighted-average period of approximately 1.7 years.

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Source: SEC EDGAR (public domain) · 10-K for the period ended 2025-12-31, filed 2026-02-25 · accession 0001759425-26-000013

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