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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 the related notes and other financial information included elsewhere in this Annual Report on Form 10-K. Some of the information contained in this discussion and analysis contains forward-looking statements that involve risks and uncertainties. You should review the section titled “Risk factors” in this Annual Report on Form 10-K for a discussion of important factors that could cause actual results to differ materially from the results described below.

Overview

We are a clinical-stage regenerative medicine company focused on developing therapeutics to activate a person’s innate regenerative potential to restore function. Our focus is on advancing our lead product candidate, FX-322, through clinical studies with the goal of developing and commercializing a medicine to help millions of people with the most common form of hearing loss while continuing to broaden the potential of our regenerative approach in other applications. We believe we are a leading company using mitotic regeneration for cochlear sensory hair cell regeneration and that FX-322 has the potential to meaningfully improve overall hearing function and enhance quality of life for people with this condition.

Our initial therapeutic focus is sensorineural hearing loss, or SNHL, which is the most prevalent type of hearing loss. We are developing FX-322 to treat a major underlying cause of SNHL, which is the loss of hair cells. FX-322 is designed to regenerate hair cells through the activation of progenitor cells already present in the ear. In our Phase 1/2 clinical trial (FX-322-201) evaluating FX-322 in 23 subjects with stable SNHL, we observed a statistically significant and clinically meaningful improvement in key measures of hearing loss, including word recognition, or WR, and clarity of sounds, and FX-322 was observed to be well-tolerated.

In March 2021, we announced topline, day-90 interim data from the Phase 2a clinical trial (FX-322-202), and in June 2021, we announced final results from the Phase 2a clinical trial (FX-322-202). The goals of the FX-322-202 trial were to further establish the hearing signal observed in the Phase 1/2 clinical trial(FX-322-201), evaluate the impact of multiple doses and provide insights on endpoints and patient population for further studies. Both day-90 interim data and the end-of-study results (as of day 210) showed that four weekly injections of FX-322 did not demonstrate improvements in any hearing measures versus placebo, a finding we believe is due to an uncontrolled bias and the limitation to a single baseline measure. We also observed an unexpected increase in WR scores in the placebo group that did not occur in previous FX-322 trials and exceeded well-established published standards, potentially suggesting bias due to trial design. Given this lack of reliability of baseline WR scores of the placebo group, we were unable to evaluate hearing improvements in WR scores for FX-322 dosing regimens versus placebo. Both the interim data and end-of-study results showed a favorable safety and tolerability profile for FX-322.

In March 2021, we also announced data from a Phase 1b clinical trial of FX-322 that was designed to evaluate the impact of injection conditions on tolerability (FX-322-111). The data showed hearing improvement from a single injection of FX-322. In the multi-center, randomized study, subjects with mild to severe SNHL (n=33) were injected in one ear with FX-322 with the untreated ear as the control. Hearing function was tested over the course of 90 days following dosing. Thirty-two subjects completed the 90-day clinical assessment period and, at day 90 following dosing, 34% of these subjects achieved a 10% or greater absolute improvement in WR scores in the treated ear, which was clinically meaningful and statistically significant compared to the untreated ear (p <0.05). This included a subset of subjects that more than doubled their WR scores. Twenty-five subjects were subsequently evaluated during the 8 to 12 months following FX-322 dosing and, as of September 22, 2021, nine subjects, including the five initial responders at day 90, had shown statistically significant hearing improvements when evaluated during this time period. Of the five subjects that showed a statistically significant response and doubled their WR scores at day 90, four of these returned for evaluation and had scores that remained above their baseline word recognition measures, though were below the threshold for statistical significance. In this trial, FX-322 showed a favorable safety profile and was well tolerated.

In May 2021, we announced data from a Phase 1b clinical trial of FX-322 in presbycusis (age-related hearing loss) (FX-322-112). The double-blind, placebo-controlled, randomized, multicenter safety study enrolled 30 individuals aged 66-85 with age-related hearing loss. Study participants were randomized 4:1 to receive either FX-322 or placebo in one ear. Validated hearing measures, as well as safety, otologic and audiologic assessments were also evaluated in the study. By design, the study recruited subjects with no medical history of noise-induced or sudden sensorineural hearing loss (SSNHL), etiologies where FX-322 associated hearing benefits were observed in prior studies, as we continue to separately evaluate subjects with specific forms of hearing loss to better refine cohorts for future studies. While the treatment effect was not

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significant compared to placebo, results from the study showed a favorable safety and tolerability profile with no reported treatment-related serious adverse events.

In December 2021 we announced data from a Phase 1b clinical trial of FX-322 in subjects aged 18-65 with severe SNHL (FX-322-113). The trial enrolled 31 subjects with Severe SNHL, defined as a pure tone average deficit between 71-90 dB. Many subjects with this clinical profile typically would be candidates for cochlear implants. The primary objectives of the study were to assess the local and systemic safety of a single dose of FX-322 and evaluate hearing responses in a more severe adult cohort. Study participants were randomized 4:1 to receive either FX-322 or placebo in one ear. Validated measures of hearing including WR, sentences in noise, and pure tone audiometry were utilized in the study. Safety, otologic and audiologic assessments were conducted at days 30 and 90 following administration of FX-322 or placebo. To gain a more comprehensive understanding of the potential impact of FX-322 in this population, we evaluated hearing using multiple tests of speech perception in both quiet and noisy backgrounds, including the Bamford-Kowal-Bench Sentence-in-Noise exam, or BKB-SIN. In this study, BKB-SIN test improvements were observed in four subjects, all of whom exceeded the 95 percent critical difference of 3.1dB SNR, with two subjects showing a 6dB response. A single placebo subject had a 3.6dB change. In the study, subjects did not show substantial changes in speech perception measures in quiet, the safety profile in the study was favorable and there were no treatment-related serious adverse events reported.

In October 2021, we commenced dosing of a Phase 2b clinical trial of FX-322 (FX-322-208) in subjects with SNHL. FX-322-208 is a randomized, placebo-controlled, multi-center study designed to evaluate the impact of a single administration of FX-322 on speech perception in approximately 124 subjects with either noise-induced or sudden SNHL, the same hearing loss severities and etiologies as those subject in which statistically significant improvements in speech perception were observed in prior FX-322 clinical trials. The study’s primary endpoint is speech perception, a measure of sound clarity and understanding speech. In a Type-C meeting with the U.S. Food and Drug Administration, or the FDA, the FDA agreed that speech perception is an acceptable primary efficacy endpoint.

In November 2021, we introduced our new SNHL investigational therapeutic program, FX-345. This program may offer some advantages as we look to expand the opportunity to treat different types of sensory neural hearing loss. Specifically, FX-345 was designed to achieve broader exposure through a large portion of the cochlea to assess if FX-345 could have an even bigger patient impact or help a broader population than FX-322. Additionally, deeper delivery into the cochlea using FX-345 may extend the reach of our approach. Further, FX-345 has greater flexibility and dose selection and formulation, enabling us to evaluate a range of different dose levels. Cochlear pharmacokinetic measures and human modeling data in a preclinical setting show FX-345 achieves greater exposure through a larger portion of the cochlea for longer time. We anticipate filing an IND for FX-345 in the second half of 2022.

We believe our PCA approach can impact a wide range of degenerative diseases. To that end, in addition to our lead program in hearing, we are working to rapidly advance discovery efforts using our PCA approach to potentially remyelinate nerves in individuals with multiple sclerosis, or MS. MS induces demyelination, stripping axons of the myelin sheaths that support nerve signal conduction and axonal survival. Prior to initiating our internal discovery program against a novel target, we licensed intellectual property from Scripps and Cambridge Enterprise on approaches to promote remyelination of nerve fibers. We continue to engage in sponsoring clinical research to validate this initial approach at Cambridge University. In November 2021, we introduced FREQ-162, an internally discovered preclinical stage compound that has been shown to induce substantially more remyelination than published comparator approaches based on in vivo models. Our efforts are focused on advancing Frequency compounds in preclinical safety studies to enable the initiation of clinical trials in 2023.

Since our formation in 2014, we have devoted substantially all our resources to developing our PCA platform, conducting research and development activities, including product candidate development, recruiting skilled personnel, establishing our intellectual property portfolio, and providing general and administrative support for these operations. We have financed our operations primarily through proceeds from the sale of convertible notes, convertible preferred stock, the common stock and the Astellas Agreement.

Since our formation, we have incurred significant operating losses and have not generated any revenue from the sale of products. Our ability to generate any product revenue or product revenue sufficient to achieve profitability will depend on the successful development and eventual commercialization of one or more of our product candidates. Our net losses were $84.7 million and $26.5 million for the years ended December 31, 2021 and 2020, respectively. As of December 31, 2021, we had an accumulated deficit of $180.1 million. During the periods presented, we do not have any off balance sheet arrangements as defined under SEC rules.

We expect our operating expenses to increase substantially in connection with the expansion of our product development programs around FX-322, FX-345, FREQ-162 and any future programs. In addition, we expect to continue to

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incur significant additional costs associated with operating as a public company. We will not generate revenue from product sales unless and until we successfully complete clinical development, obtain regulatory approval for, and successfully commercialize our product candidates, or until our collaborators do so, which could result in milestone payments or royalties to us. If we obtain regulatory approval for any of our product candidates, we expect to incur significant expenses related to developing our commercialization capability to support product sales, marketing and distribution.

As a result of these anticipated expenditures, we will need additional financing to support our continuing operations. Until such time as we can generate significant revenue from product sales, if ever, we expect to finance our cash needs through a combination of public or private equity or debt financings and other sources, which may include current and new collaborations with third parties. Adequate additional financing may not be available to us on acceptable terms, or at all. Our inability to raise capital as and when needed would have a negative impact on our financial condition and our ability to pursue our business strategy. We cannot be sure that we will ever generate sufficient revenue to achieve profitability.

Because of the numerous risks and uncertainties associated with the development of therapeutics, we are unable to predict the timing or amount of increased expenses or when or if we will be able to achieve or maintain profitability. Even if we can generate revenue from product sales, we may not become profitable. If we fail to become profitable or are unable to sustain profitability on a continuing basis, then we may be required to raise additional capital on terms that are unfavorable to us or we may be unable to continue our operations at planned levels and be forced to reduce or terminate our operations.

Our offices are located in states that have lifted many COVID-19 restrictions. As of the date of the filing of this Annual Report, the majority of our non-laboratory based employees continue to work from home two to three days per week, while our laboratory personnel have largely resumed a full in-person schedule in our Lexington, MA facility. We have also taken steps consistent with the FDA’s updated industry guidance for conducting clinical trials. The continuing COVID-19 pandemic, and actions taken to mitigate it, have had and are expected to continue to have an impact on the economies and financial markets of many countries, including the geographical area in which we operate, which could adversely impact our ability to raise additional capital when needed or on acceptable terms, if at all. In addition, COVID-19 may cause disruptions in our business or operations, as well as the business and operations of our CMOs, CROs and other third parties with whom we conduct business. The COVID-19 pandemic may also adversely impact our clinical trials, which could impede, delay, limit or prevent the clinical development of our product candidates and ultimately lead to the delay or denial of regulatory approval of our product candidates, which would materially adversely affect our business and operations, including our ability to generate revenue.

License and collaboration agreements

Astellas Pharma Inc.

In July 2019, we entered into the Astellas Agreement with Astellas, under which we granted Astellas an exclusive, royalty-bearing, sub-licensable, nontransferable license to certain patent rights to research, develop, manufacture, have manufactured, use, seek, and secure regulatory approval for, commercialize, offer for sale, sell, have sold and import, and otherwise exploit licensed products containing both a GSK-3 inhibitor and an HDAC inhibitor, or the Astellas licensed products, including our product candidate FX-322, outside of the United States. We and Astellas have agreed to jointly develop the Astellas licensed products, including carrying out joint studies. Each party has agreed to use commercially reasonable efforts to carry out development activities assigned to it under an agreed-upon development plan. Astellas has agreed to use commercially reasonable efforts to obtain regulatory approval for at least one Astellas licensed product in SNHL and in age-related hearing loss, in each case in one major Asian country and one major European country. We have agreed to use commercially reasonable efforts to obtain regulatory approval for at least one Astellas licensed product in the United States. Astellas has the sole right to commercialize the Astellas licensed products outside of the United States and we have the sole right to commercialize the Astellas licensed products in the United States. Astellas has agreed to use commercially reasonable efforts to commercialize Astellas licensed products in a major Asian country and a major European country following receipt of regulatory approval in such countries.

As a consideration for the licensed rights under the Astellas Agreement, Astellas paid us an upfront payment of $80.0 million in July 2019 and has agreed to pay potential development milestones up to $230.0 million. Specifically, we would receive development milestone payments of $65.0 million and $25.0 million upon the first dosing of a subject in Phase 2b clinical trial for SNHL in Europe and Asia, respectively and $100.0 million and $40.0 million upon the first dosing of a subject in a Phase 3 clinical for SNHL in Europe and Asia, respectively. If the Astellas Licensed Products are successfully commercialized, we would be eligible for up to $315.0 million in potential commercial milestone payments and tiered royalties at rates ranging from low to mid-teen percentages. The parties shall share equally, on a 50/50 basis, all out-of-pocket costs and joint study costs for all the joint activities conducted pursuant to the development plans or the joint manufacturing plan. Pursuant to our Exclusive Patent License Agreement, or the MIT License, with the Massachusetts Institute of Technology, or MIT, we are required to pay MIT a royalty on sublicense revenues. A royalty of $16.0 million

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related to the $80.0 million upfront payment received from Astellas was expensed in the quarter ended September 30, 2019 and paid in November 2019. The $80.0 million upfront payment received from Astellas in July 2019 was recorded as deferred revenue and recognized as revenue, using the input method, over the period from execution of the agreement through June 30, 2021, when the Phase 2a clinical trials were completed.

Massachusetts Institute of Technology

In December 2016, we entered into the MIT License, with MIT under which we received an exclusive, worldwide, royalty-bearing license to certain patent rights to develop, make, have made, use, sell, offer to sell, lease, and import products, or the MIT licensed products, and to develop and perform processes, or the MIT licensed processes, which incorporate the licensed technology for the treatment of disease, including but not limited to the prevention and remediation of hearing loss. We are required to use diligent efforts to develop and commercialize the MIT licensed products or processes, and to make such products or processes reasonably available to the public. We are also subject to certain development obligations with regards to a first MIT licensed product. We have satisfied certain obligations related to preclinical studies and the filing of an IND for a first MIT licensed product with our development activities related to FX-322. Our future development obligations are: (i) to commence a Phase III clinical trial for such product within five years of the IND filing for such product, (ii) to file a New Drug Application, or NDA, or equivalent with the FDA or comparable European regulatory agency for such product within nine years of the IND filing for such product, and (iii) to make a first commercial sale of such product within 11 years of the IND filing for such product. We also have certain development obligations with regards to a second MIT licensed product.

Upon entering into the MIT License, we paid a $50 thousand license fee payment and issued shares of our common stock equal to 5% of our then-outstanding capital stock to MIT. We are required to pay certain annual license maintenance fees ranging from $30 thousand to $0.1 million per year prior to first commercial sale of a MIT licensed product and an annual license maintenance fee of $0.2 million every year afterwards, which may be credited to running royalties during the same calendar year, if any. We are also required to make potential milestone payments in an aggregate amount of up to $2.9 million on each MIT licensed product or process. In addition, we agreed to pay a low single-digit royalty on the MIT licensed products and processes and a low-twenties royalty on sub-license revenues.

In March 2022, we entered into an amendment with MIT, removing a patent and certain patent applications from the MIT License Agreement which were unrelated to our hearing and MS programs and which we were not utilizing.

Massachusetts Eye and Ear (Formerly Massachusetts Eye and Ear Infirmary)

In February 2019, we entered into an Non-Exclusive Patent License Agreement, or the MEE License, with the Massachusetts Eye and Ear, or MEE, under which we received a non-exclusive, non-sub-licensable, worldwide, royalty-bearing license to certain patent rights to develop, make, have made, use, sell, offer to sell, lease, and import products, and to develop and perform processes that incorporate the licensed technology for the treatment or prevention of hearing loss, or the MEE licensed products. We are obligated to use diligent efforts to develop and commercialize the MEE licensed products. We met one of our milestone timeline obligations by dosing a first subject in a Phase II trial by December 31, 2020. We are still subject to a milestone timeline obligation to dose a first subject in a Phase III trial by December 31, 2024.

Upon entering into the MEE License, we made a $20 thousand license fee payment. We are obligated to pay certain annual license maintenance fees between $5 thousand and $7.5 thousand per each MEE patent family case number included in the licensed MEE patent rights prior to first commercial sale of an MEE licensed product. We are also obligated to pay a minimum annual royalty payment of $15 thousand per each MEE patent family case number included in the licensed MEE patent rights after first commercial sale of an MEE licensed product. We are also obligated to make milestone payments up to $350 thousand on each product or process that incorporates the licensed patent rights. In addition, we have agreed to pay a low single-digit royalty on products and processes that incorporate the licensed patent rights.

The Scripps Research Institute (California Institute for Biomedical Research)

In September 2018, we entered into a license agreement, or the CALIBR License, with the California Institute for Biomedical Research, or CALIBR, a division of Scripps, under which we received an exclusive, worldwide, royalty-bearing license to certain patent rights to make, have made, use, sell, offer to sell, and import products, or the CALIBR licensed products, which incorporate licensed technology for the treatment of MS. We have agreed to use commercially reasonable efforts to develop, manufacture, and sell at least one CALIBR licensed product. We are also subject to certain milestone timeline obligations, which may be extended in certain circumstances as described in the CALIBR License. In October 2021, we entered into an amendment with CALIBR which updated the milestone obligations to: (i) initiate a Phase II clinical trial

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(or equivalent) for a CALIBR licensed product by December 31, 2023 and (ii) initiate a Phase III clinical trial (or equivalent) for a CALIBR licensed product by December 31, 2025.

Upon entering into the CALIBR License, we made a $1.0 million license fee payment, and are required to make milestone payments in an aggregate amount of up to $26.0 million for each category of CALIBR licensed products. Category 1 is any CALIBR licensed products containing a compound that modulates any muscarinic receptor, and Category 2 is any CALIBR licensed products not included in Category 1 that could differentiate oligodendrocyte precursor cells from in vitro studies and/or are active in animal models relevant to MS. We are also required to pay a mid-single-digit royalty on CALIBR licensed products and a royalty on sub-license revenues ranging from a low-teen percentage to 50%.

The Scripps Research Institute

In September 2018, we entered into a Research Funding and Option Agreement, or the Scripps option agreement, with Scripps (CALIBR is a division of Scripps), under which we provided funding to Scripps to pursue certain MS research activities on selected targets. In the same agreement, we were granted an exclusive option to acquire an exclusive, sublicensable, worldwide license under certain intellectual property arising from the MS research activities on the selected targets. The Scripps option agreement, including the MS research activities and the exclusive option, terminated on December 31, 2021. The CALIBR License remains active.

Cambridge Enterprise Limited

In December 2019, we entered into an Exclusive Patent License Agreement, or the Cambridge License, with Cambridge, under which we received an exclusive, worldwide, royalty-bearing license to certain patent rights to make, have made, use, sell, offer to sell, and import products, or the Cambridge licensed products, which incorporate licensed technology for the treatment of demyelinating diseases. We also have the right to grant sublicenses under the Cambridge License. Cambridge reserves the right to use for itself (as well as the investors and the funder) and the right to grant nonexclusive licenses to other academic institutions for any academic publication, research and teaching and clinical patient care.

We have agreed to use diligent and good faith efforts to develop and commercially exploit at least one Cambridge licensed product. Upon entering into the Cambridge License, we made a $50 thousand license fee payment. We are obligated to pay an annual license fee of $50 thousand. We are also obligated to make milestone payments up to $10.5 million on each Cambridge licensed product. In addition, we have agreed to pay a low single-digit royalty on products that incorporate the licensed patent rights, subject to offset in certain circumstances.

The Cambridge License continues in effect on a country-by-country basis until the expiration or revocation, without right of further appeal, of all licensed issued patents and filed patent applications, unless terminated earlier. We have the right to terminate for any reason upon 90 days’ prior written notice. Each party has the right to terminate immediately if the other party ceases to carry on its business. Either party may also terminate the Cambridge License for material breach if such breach remains uncured for 30 days. Cambridge may also terminate the Cambridge License if we fail to diligently develop and commercially exploit at least one Cambridge licensed product or we or our affiliates or sub-licensees commence any action against Cambridge to declare or render any claim of the licensed patent rights invalid, unpatentable, unenforceable, or not infringed.

Components of our results of operations

Revenue

To date, we have not generated any revenue from product sales and do not expect to generate any revenue from product sales in the foreseeable future. In July 2019, we entered into the Astellas Agreement and received an upfront license fee payment of $80.0 million. In the year ended December 31, 2021, we recognized $14.1 million of the $80.0 million upfront fee as revenue. In the years ended December 31, 2020, we recognized $37.0 million of the $80.0 million upfront fee as revenue.

Research and development expenses

Research and development expenses consist primarily of costs incurred for our research activities. These research and development activities are largely focused on hearing restoration, specifically our lead product candidate FX-322 and new

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investigational therapeutic program FX-345, and MS, specifically early-stage research related to our novel target FREQ-162. These expenses include the following:

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salaries, benefits and other related costs, including stock-based compensation expense, for personnel engaged in research and development functions;

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expenses incurred under agreements with third parties, including contract research organizations, or CROs, and other third parties that conduct preclinical research and development activities and clinical trials on our behalf;

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costs to manufacture our clinical trial material for use in our preclinical studies and clinical trials;

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costs of outside consultants, including their fees and related travel expenses;

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costs of laboratory supplies and acquiring, developing and manufacturing preclinical study and clinical trial materials;

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option and license payments made to third parties, including MIT, Scripps, MEEI and Cambridge, for intellectual property used in research and development activities; and

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facility-related expenses, which include direct depreciation costs and expenses for rent and maintenance of facilities and other operating costs if specifically, identifiable to research activities.

We expense research and development costs as incurred.

We track external research and development costs, including the cost of services, outsourced research and development, clinical trials, contract manufacturing, laboratory equipment and maintenance, and certain other development costs, by product candidate when the costs are specifically identifiable to a product candidate. Internal and external costs associated with infrastructure resources, other research and development costs, facility-related costs, and depreciation and amortization that are not identifiable to a specific product candidate are included in the platform development, early-stage research, and unallocated expenses category.

We expect that our research and development expenses will continue to increase substantially for the foreseeable future as we conduct our Phase 2b trial of FX-322 (FX-322-208) and extension trials of FX-322-111 and FX-322-112, continue ongoing activities related to FX-345 and FREQ-162, initiate additional clinical trials, and continue to discover and develop additional product candidates. We have in the past and may in the future need to engage additional third parties and CROs earlier than we might normally do so in response to limitations on these CROs services as a result of the COVID-19 pandemic to advance these activities. Product candidates in later stages of clinical development generally have higher development costs than those in earlier stages of clinical development, primarily due to increased scale, duration and the higher costs associated with later stage clinical trials.

We cannot determine with certainty the duration and costs of future clinical trials of FX-322 or any other product candidate we may develop or if, when, or to what extent we will generate revenue from the commercialization and sale of any product candidate for which we obtain marketing approval. The duration, costs, and timing of clinical trials and development of FX-322 and any other product candidate we may develop will depend on a variety of factors, including:

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the scope, rate of progress, expense and results of clinical trials of FX-322, as well as of any future clinical trials of other product candidates and other research and development activities that we may conduct;

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the actual probability of success for our product candidates, including their safety and efficacy, early clinical data, competition, manufacturing capability, and commercial viability;

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significant and changing government regulation and regulatory guidance;

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the timing and receipt of any marketing approvals;

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the progress of the development efforts of parties with whom we may enter into collaboration agreements;

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our ability to secure manufacturing supply through relationships with third parties;

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the commercialization of our product candidates, if and when approved;

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the expense of filing, prosecuting, defending and enforcing any patent claims and other intellectual property rights; and

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the impact of COVID-19 on our Phase 2b clinical trial of FX-322 (FX-322-208) and extension trials of FX-322-111 and FX-322-112.

A change in the outcome of any of these variables with respect to the development of a product candidate could mean a significant change in the costs and timing associated with the development of that product candidate.

General and administrative expenses

General and administrative expenses consist primarily of salaries and other related costs, including stock-based compensation, for personnel in our executive, finance, business development, and administrative functions. General and administrative expenses also include legal fees relating to intellectual property and corporate matters; professional fees for accounting, auditing, tax and consulting services; insurance costs; travel expenses; and facility-related expenses, which include direct depreciation costs and expenses for rent and maintenance of facilities, and other operating costs that are not specifically attributable to research and development activities.

We expect that our general and administrative expenses will increase in the future as we increase our personnel headcount to support our business. In addition, we expect to continue to incur increased expenses associated with being a public company, including costs of accounting, audit, legal, regulatory, and tax-related services associated with maintaining compliance with the requirements of The Nasdaq Stock Market LLC and the SEC; director and officer insurance costs; and investor and public relations costs.

Interest income

Interest income consists of interest earned on cash equivalents and marketable securities.

Interest expense

Interest expense consists of interest paid on our term loan.

Realized (loss) gain on investments

Realized (loss) gain on investments represents the loss or gain realized on our marketable securities.

Foreign exchange gain (loss)

Foreign exchange gain (loss) represents the gain or loss recorded as a result of remeasuring the financial statements of our foreign subsidiaries.

Other expense, net

Other expense, net consists of amortization expense and accretion income on investments.

Income taxes

Since our inception in 2014, we have generated cumulative federal and state net operating loss and research and development credit carryforwards for which we have not recorded any net tax benefit due to uncertainty around utilizing these tax attributes within the respective carryforward periods.

As of December 31, 2021, we had federal net operating loss carryforwards of approximately $149.1 million and Massachusetts state operating loss carryforwards of approximately $83.5 million which may be available to offset future taxable income. The U.S. federal net operating loss carryforwards include $22.4 million available to reduce future taxable income through 2037 and approximately $126.7 million which do not expire and are available to reduce future taxable income indefinitely. The state net operating loss carryforwards are available to offset future taxable income through 2041. As of December 31, 2021, we also had federal and Massachusetts research and development tax credit carryforwards of $5.2 million and $2.1 million, respectively, which are available to offset federal and state tax liabilities through 2041 and 2036, respectively. Realization of future tax benefits is dependent on many factors, including our ability to generate taxable income within the net operating loss carryforward period. Net operating loss and tax credit carryforwards may become subject to an annual limitation in the event of certain cumulative changes in the ownership interest of significant shareholders over a three-year period in excess of 50%, as provided under Sections 382 and 383 of the Internal Revenue Code of 1986, as amended, respectively, as well as similar state provisions. These ownership changes may limit the number of carryforwards that can be

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utilized annually to offset future taxable income. In general, an ownership change, as defined by Section 382, results from transactions increasing the ownership of certain shareholders or public groups in the stock of a corporation by more than 50% over a three-year period. We have completed several financings and have conducted a study to assess whether a change of control has occurred or whether there have been multiple changes of control since inception and have determined that an ownership change did occur in March 2017. Accordingly, utilization of $12.4 million of the U.S. net operating loss carryforwards which were incurred prior to March 2017 (pre-ownership change) is limited under Section 382. After the Section 382 limitations, we may utilize approximately $10.8 million of our pre-ownership change net operating loss carryforwards based upon an annual usage of approximately $1.6 million for each of the next five years after the ownership change and approximately $0.2 million for each of the 15 years thereafter. The remaining pre-ownership change net operating losses of approximately $1.6 million were written off due to expiration under limitation. The limitation has been determined by first multiplying the value of our stock at the time of the ownership change by the applicable long-term tax-exempt rate. These carryforwards may be subject to further annual limitations under Section 382 in the event of future changes in ownership. Additionally, we have determined an ownership changed occurred in October of 2019 as a result of the IPO. Accordingly, utilization of approximately $46.1 million of the U.S. net operating loss carryforwards incurred prior to October 2019 is also limited under Section 382. We have determined we will be able to utilize the entire $46.1 million of our pre-ownership change net operating loss carryforwards based upon the limitations calculated from the October 2019 ownership change. These carryforwards may be subject to further annual limitations under Section 382 in the event of future changes in ownership.

Results of operations

Comparison of years ended December 31, 2021 and 2020

The following table summarizes our results of operations for the years ended December 31, 2021 and 2020:

Years ended December 31,

Operating expenses:

Interest expense (764 ) —

Realized (loss) gain on investments (23 ) 84

Foreign exchange gain (loss) 16 (4 )

Other expense, net (266 ) —

Income taxes (15 ) (35 )

Revenue

Revenue was $14.1 million for the year ended December 31, 2021 compared to $37.0 million for the year ended December 31, 2020. In July 2019, we entered into the Astellas Agreement and received an upfront license fee payment of $80.0 million. In accordance with ASC 606, we recognized the $80.0 million as revenue over the period that research and development services and the Phase 2a clinical study for FX-322 were provided using the input method. These research and development services concluded in June 2021.

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Research and development expenses

Years ended December 31, Increase

(in thousands)

Platform development, early-stage research and unallocated expenses:

The $10.3 million of costs related to FX-322 incurred for the year ended December 31, 2021 consisted primarily of $8.4 million of clinical costs associated with ongoing trials, including FX-322-208 which is new in 2021, and $1.9 million of drug development and manufacturing costs. The $9.4 million of costs related to FX-322 incurred for the year ended December 31, 2020 consisted primarily of $6.7 million of clinical costs associated with the Phase 2a and other related clinical trials of FX-322 and $2.7 million related to drug development and manufacturing. The overall increase from the year ended December 31, 2020 is due primarily to the clinical trial activity in the year ended December 31, 2021.

The $5.5 million of costs related to FX-345 incurred for the year ended December 31, 2021 consisted of drug development and manufacturing costs, including $3.1 million related to preclinical safety. The $1.9 million of costs related to FX-345 for the year ended December 31, 2020 consisted primarily of $1.5 million of in vitro and in vivo testing. The overall increase from the year ended December 31, 2020 is due primarily to our efforts to advance our new SNHL investigational therapeutic program, FX-345.

The $6.6 million of costs related to MS incurred for the year ended December 31, 2021 consisted of drug development and manufacturing, including $3.0 million in preclinical safety, $1.6 million in outsourced chemistry, and $0.9 million in in vitro and in vivo testing. Similarly, the $4.5 million of costs related to MS incurred for the year ended December 31, 2020 consisted of drug development and manufacturing, including $1.2 million in both preclinical safety and in vitro and in vivo testing. The overall increase from the year ended December 31, 2020 is due primarily to our focus on the advancement of our novel target, FREQ-162.

The $38.5 million of platform development, early-stage research and unallocated expenses incurred for the year ended December 31, 2021 consisted primarily of $25.6 million of employee-related costs, including $9.6 million of stock-based compensation expense, $6.9 million in facility-related costs, and $2.3 million of outsourced research and development expense. This increase of $15.0 million from the year ended December 31, 2020 is primarily attributable to an increase of $8.4 million in employee-related expenses associated with increased headcount to support pre-clinical and clinical development across hearing and MS programs, a $4.3 million increase in rent, including utilities and maintenance, or CAM, charges related to our new office space, and a $0.8 million increase in depreciation related to equipment purchases for our new office space.

General and administrative expenses

The $37.2 million of general and administrative expenses for the year ended December 31, 2021 consisted primarily of $21.1 million of employee-related costs, including $12.1 million in stock-based compensation expense, $7.6 million of professional services expense, $1.7 million in rent, including utilities and CAM charges, and $1.2 million in depreciation expense. General and administrative expenses increased $10.1 million from December 31, 2020 due to an increase of $8.2 million in employee-related costs as we increase our general and administrative headcount to manage our growth and the impact of being a public company, and increases of $1.0 million and $0.8 million in rent, including utilities and CAM charges, and depreciation expense, respectively.

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Interest income

Interest income was $0.4 million for the year ended December 31, 2021 compared to $1.0 million for the year ended December 31, 2020, due to changes in interest rates from the previous year.

Interest expense

Interest expense was $0.8 million for the year ended December 31, 2021. There was no interest expense for the year ended December 31, 2020. This increase is due to interest expense on our term loan which commenced in December 2020.

Realized (loss) gain on investments

Realized loss on investments was $23 thousand for the year ended December 31, 2021 compared to a gain of $84 thousand for the year ended December 31, 2020 due to changes in the composition of investments year over year.

Foreign exchange gain (loss)

Foreign exchange gain was $16 thousand for the year ended December 31, 2021 compared to a loss of $4 thousand for the year ended December 31, 2020. The increase of $20 thousand was due to differences in foreign exchange remeasurement of the financial statements of our foreign subsidiaries.

Other expense, net

Other expense, net was $0.3 million for the year ended December 31, 2021. This expense represents amortization expense on investments, partially offset by accretion income on investments. There was no comparable expense for the year ended December 31, 2020.

Income taxes

Income tax expense, which represents taxes on interest income earned by our subsidiary, Frequency Therapeutics Securities Corporation, a Massachusetts Securities Corporation, was $15 thousand for the year ended December 31, 2021.

Liquidity and capital resources

Since our inception, we have incurred significant operating losses. We expect to continue to incur significant expenses and operating losses for the foreseeable future as we advance the preclinical and clinical development of our product candidates. We expect that our research and development and general and administrative costs will continue to increase, in connection with conducting preclinical studies and clinical trials for our product candidates, contracting with contract manufacturing organizations, or CMOs, to support preclinical studies and clinical trials, expanding our intellectual property portfolio, and providing general and administrative support for our operations particularly as we continue to operate as a public company. As a result, we will need additional capital to fund our operations, which we may obtain from additional equity or debt financings, collaborations, licensing arrangements or other sources.

We do not currently have any approved products and have never generated any revenue from product sales. We have financed our operations primarily through proceeds from private and public securities financings, the upfront payment under the Astellas Agreement, and our term loan. To date, we have raised approximately $378.2 million, including from grants and option exercises. Our cash, cash equivalents and marketable securities totaled $142.4 million as of December 31, 2021. As of December 31, 2021, we had $0.8 million of current debt and $14.2 million of non-current debt related to the Term Loan.

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In December 2020, we entered into a Loan and Security Agreement with a commercial bank for a Term Loan with a principal balance of $15 million. We will make monthly interest only payments through November 30, 2022. The principal balance and interest will be repaid in equal monthly installments after the interest only period and continue through May 1, 2024. Advances under the Loan Agreement will bear an interest rate equal to the greater of either (i) 1.50% plus the Prime Rate (as reported in The Wall Street Journal, subject to an interest rate floor of zero) or (ii) 4.75%.

In December 2021, we entered into an Equity Distribution Agreement with Oppenheimer & Co. Inc., or Oppenheimer, to sell shares of our common stock, having aggregate gross sales proceeds of up to $125.0 million, from time to time, through an “at the market” equity offering program under which Oppenheimer acts as sales agent, or the ATM program. As of December 31, 2021, we have not sold any shares of common stock under the ATM program.

Cash flows

The following table summarizes our sources and uses of cash for the periods presented:

Year Ended December 31,

(in thousands)

Net cash used in operating activities $ (76,059 ) $ (45,188 )

Net cash (used in) provided by investing activities (66,126 ) 10,402

Net cash provided by financing activities 1,358 56,688

Net (decrease) increase in cash and cash equivalents $ (140,827 ) $ 21,902

Cash flows for the year ended December 31, 2021

Operating activities

Net cash used in operating activities for the year ended December 31, 2021 was $76.1 million, consisting of a net loss of $84.7 million as we incurred expenses associated with our FX-322 program, platform development and early-stage research, and general and administrative expenses. In addition, we had non-cash charges of $26.0 million for depreciation, stock-based compensation expense, non-cash lease expense, non-cash interest expense and loss on disposal of assets. Net cash used in operating activities was also impacted by a net $17.3 million decrease in operating assets and liabilities, including a decrease of $14.1 million in deferred revenues from the upfront payment under the Astellas Agreement, a $2.3 million decrease in accounts payable, a decrease in accrued expenses of $0.8 million, and a $0.2 million increase in prepaid expenses and other assets.

Investing activities

Net cash used in investing activities for the year ended December 31, 2021 was $66.1 million, which was attributable to $92.4 million of purchases of marketable securities and $2.9 million of purchases of property and equipment, partially offset by $29.2 million in redemptions of marketable securities.

Financing activities

Net cash provided by financing activities for the year ended December 31, 2021 was $1.4 million, primarily attributable to $1.3 million in proceeds from the exercise of stock options and $60 thousand in proceeds from the Employee Stock Purchase Plan.

Cash flows for the year ended December 31, 2020

Operating activities

Net cash used in operating activities for the year ended December 31, 2020 was $45.2 million, consisting of a net loss of $26.5 million as we incurred expenses associated with our FX-322 program, platform development and early-stage research, and general and administrative expenses. In addition, we had non-cash charges of $11.6 million for depreciation, stock-based compensation expense, and non-cash lease expense. Net cash used in operating activities was also impacted by a net $30.2 million decrease in operating assets and liabilities, including a decrease of $37.0 million in deferred revenues from the upfront payment under the Astellas Agreement, and increases in accounts payable, accrued expenses and prepaid expense and other current assets of $4.3 million, $3.1 million, and $0.6 million, respectively.

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Investing activities

Net cash provided by investing activities for the year ended December 31, 2020 was $10.4 million, which was attributable to $43.4 million of redemptions of available for sale securities, partially offset by $26.3 million of available for sale securities and $6.7 million of purchases of property and equipment, $2.6 million of which is related to the buildout of our new Lexington office.

Financing activities

Net cash provided by financing activities for the year ended December 31, 2020 was $56.7 million, primarily attributable to $40.1 million in net proceeds from the July 2020 Private Placement, $15.0 million in proceeds from the Term Loan, and $1.5 million in proceeds from the exercise of stock options.

Funding requirements

Our operating expenses increased substantially in the years ended December 31, 2021 and 2020 and are expected to increase substantially in the future in connection with our ongoing activities, particularly as we advance FX-322 through clinical trials and as we research and develop additional product candidates, including FX-345 and FREQ-162, conduct preclinical activities, studies for INDs, and initiation of human clinical trials. In addition, we expect to incur additional general and administrative costs to build the infrastructure necessary to manage the growth of our research and development efforts and requirements of operating as a public company.

Specifically, our costs and expenses will increase as we:

•

advance the clinical development of FX-322;

•

pursue the preclinical and clinical development of other product candidates using our PCA platform, including FX-345 and FREQ-162;

•

in-license or acquire the rights to other products, product candidates or technologies;

•

maintain, expand, and protect our intellectual property portfolio;

•

hire additional personnel in research, manufacturing, and regulatory and clinical development, as well as management personnel; and

•

expand our operational, financial, investor relations, and management systems and increase personnel, including personnel to support our operations as a public company.

We believe that our existing cash, cash equivalents, and marketable securities, will enable us to fund our operating expenses and capital expenditure requirements through the end of 2023. We have based this estimate on assumptions that may prove to be incorrect, and we could utilize our available capital resources sooner than we expect.

Because of the numerous risks and uncertainties associated with the research, development, and commercialization of therapeutics, it is difficult to estimate with certainty the amount of our working capital requirements. Our future funding requirements will depend on many factors, including:

•

the progress, costs, and results of our clinical development and clinical trials for FX-322;

•

the progress, costs, and results of our additional research and preclinical development programs, including FX-345 and FREQ-162;

•

the outcome, timing and cost of meeting regulatory requirements established by the FDA and comparable foreign regulatory authorities, if applicable, for our product candidates;

•

business and operations interruptions resulting from the COVID-19 global pandemic;

•

the costs and timing of internal process development, manufacturing activities, and clinical trial management associated with FX-322 and other product candidates, including FX-345 and FREQ-162, we advance through preclinical and clinical development;

•

our ability to establish and maintain strategic collaborations, licensing or other agreements and the financial terms of such agreements;

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•

the scope, progress, results, and costs of any product candidates that we may derive from our PCA platform or any other product candidates we may develop alone or with collaborators;

•

the extent to which we in-license or acquire rights to other products, product candidates, or technologies;

•

additions or departures of key scientific or management personnel;

•

the costs and timing of preparing, filing, and prosecuting patent applications, maintaining and protecting our intellectual property rights, and defending against any intellectual property-related claims; and

•

the costs and timing of future commercialization activities, including product manufacturing, marketing, sales, and distribution for any product candidates for which we or our collaborators obtain marketing approval.

Until such time as we can generate significant revenue from product sales, if ever, we expect to finance our cash needs through a combination of public or private equity or debt financings and other sources, which may include current and new collaborations with third parties. To the extent that we raise additional capital through the sale of equity or convertible debt securities, your ownership interest will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect your rights as a common 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 other sources, such as collaboration agreements, strategic alliances, licensing arrangements or marketing and distribution arrangements, we may have to relinquish valuable rights to our technologies, future revenue streams, product development, and research programs or product candidates, or grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds when needed, we may be required to delay, limit, reduce, or terminate our product development or future commercialization efforts or grant rights to develop and market products or product candidates that we would otherwise prefer to develop and market ourselves.

Contractual obligations and commitments

The following is a summary of our contractual obligations and commitments as of December 31, 2021:

Payments due by period (in thousands)

Total Less than 1 year 1-3 years 4-6 years More than 6 years

(1)

Represents future minimum lease payments under our operating leases for office and laboratory space at our Lexington, Massachusetts and Farmington, Connecticut facilities (see Note 14 of notes to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for additional information on these lease agreements).

We have not included future milestone payments under our collaboration and license agreements in the table above since the payment obligations under these agreements are contingent upon future events, such as the achievement of specified product development milestones or generating product sales, and we are unable to estimate the timing or likelihood of achieving these milestones or generating future product sales. We are also required to spend certain minimum amounts on research and development of licensed products or processes under the MIT License, which are not included in the table above. See “—License and collaboration agreements” for more information regarding our payment obligations under these agreements.

We also enter into contracts in the normal course of business with CROs, CMOs, universities, and other third parties for preclinical research studies, clinical trials and testing and manufacturing services. These contracts generally do not contain minimum purchase commitments and are cancelable by us upon prior written notice although, purchase orders for clinical materials are generally non-cancelable. Payments due upon cancellation consist only of payments for services provided or expenses incurred, including noncancelable obligations of our service providers, up to the date of cancellation or upon completion of a manufacturing run. These payments are not included in the table above as the amount and timing of such payments are not known or are not material.

Critical accounting policies and use of estimates

Our management’s discussion and analysis of financial condition and results of operations is based on our audited consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of our consolidated financial statements and related disclosures requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, revenue, costs and expenses, and the

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disclosure of contingent assets and liabilities in our consolidated financial statements. We base our estimates on historical experience, known trends and events, and various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. We evaluate our estimates and assumptions on an ongoing basis. Our actual results may differ 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 included elsewhere in this Annual Report on Form 10-K, we believe that the following accounting policies are those most critical to the judgments and estimates used in the preparation of our consolidated financial statements.

Revenue recognition

We account for contracts with customers in accordance with Accounting Standards Codification (“ASC”), Topic 606, Revenue from Contracts with Customers (“ASC 606”), including all amendments thereto. This standard applies to all contracts with customers, except for contracts that are within the scope of other standards, such as collaborative arrangements and leases. Our disclosure in the accompanying consolidated financial statements reflects the Company’s accounting policies in compliance with this standard.

Under ASC 606, an entity recognizes revenue when or as its customer obtains control of promised goods or services, in an amount that reflects the consideration that the entity expects to receive in exchange for those goods or services. To recognize revenue for arrangements that an entity determines are within the scope of ASC 606, the entity performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price, including variable consideration, if any; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies its performance obligations. We only apply the five-step model to contracts when it is probable that the entity will collect substantially all of the consideration to which it will be entitled in exchange for the goods or services it transfers to the customer. Once a contract is determined to be within the scope of ASC 606, we assess the goods or services promised within each contract and identifies as a performance obligation each promise to transfer to the customer either (a) a good or service (or bundle of goods and services) that is distinct, or (b) a series of distinct goods and services that are substantially the same and have been the same pattern of transfer to the customer.

We assess whether each promised good or service is distinct for the purpose of identifying the performance obligations in the contract. This assessment involves subjective determinations and requires management to make judgments about the individual promised goods or services and whether such are separable from the other aspects of the contractual relationship. Promised goods and services are considered distinct provided that: (i) the customer can benefit from the good or service either on its own or together with other resources that are readily available to the customer (that is, the good or service is capable of being distinct) and (ii) the entity’s promise to transfer the good or service to the customer is separately identifiable from other promises in the contract (that is, the promise to transfer the good or service is distinct within the context of the contract). In assessing whether a promised good or service is distinct, we consider factors such as the research, manufacturing and commercialization capabilities of the collaboration partner (the “customer” in this type of arrangement) and the availability of the associated expertise in the general marketplace. We also consider the intended benefit of the contract in assessing whether a promised good or service is separately identifiable from other promises in the contract. If a promised good or service is not distinct, an entity is required to combine that good or service with other promised goods or services until it identifies a bundle of goods or services that is distinct. For each arrangement that results in revenues, we identify all performance obligations, which may include, for example, a license to IP and know-how, research and development activities, and/or manufacturing services.

In addition to any upfront payment, if the consideration promised in a contract includes a variable amount, we estimate the amount of consideration to which it will be entitled in exchange for transferring the promised goods or services to a customer. We determine the amount of variable consideration by using the expected value method or the most likely amount method. We include the estimated variable consideration in the transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur. At the end of each subsequent reporting period, we re-evaluate the estimated variable consideration included in the transaction price and any related constraint, and if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis in the period of adjustment.

If an arrangement includes development and regulatory milestone payments, we evaluate whether the milestones are considered probable of being reached and estimates the amount to be included in the transaction price using the most likely amount method. There is considerable judgment involved in determining whether it is probable that a significant revenue reversal would not occur. If it is probable that a significant revenue reversal will not occur, the associated milestone value is included in the transaction price. Milestone payments that are not within our control or of the licensee such as regulatory

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approvals, are generally not considered probable of being achieved until those approvals are received. At the end of each subsequent reporting period, we re-evaluate the probability of achievement of all milestones subject to constraint and, if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenues and earnings in the period of adjustment.

For contracts that include sales-based royalties (including milestone payments based on the level of sales) promised in the exchange for licenses of intellectual property, and the license is deemed to be the predominant item to which the royalties relate, we recognize royalty revenue and sales-based milestone payments at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied. In determining the transaction price, we adjust the promised amount of consideration for the effects of the time value of money if the timing of payments provides the Company or the Company’s customer with a significant benefit of financing the transfer of goods and services. We do not assess whether a contract has a significant financing component if the expectation at contract inception is such that the period between payment by the licensees and the transfer of the promised goods or services to the licensees will be one year or less. We assess each of its revenue generating arrangements in order to determine whether a significant financing component exists. We recognize as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) each performance obligation is satisfied, either at a point in time or over time. For performance obligations satisfied over time, we measure progress toward completion of its performance obligations using an input method based on our efforts and inputs to satisfy its performance obligations relative to total expected inputs to the satisfaction of that performance obligation.

Amounts received from a customer prior to revenue recognition are recorded as deferred revenue. Amounts received from a customer that are expected to be recognized as revenue within the 12 months following the balance sheet date are classified as a current liability in the consolidated balance sheets.

Our only revenue recognized since inception is related to the Astellas Agreement. At commencement of the Astellas Agreement, we estimated the performance obligation, the completion of the Phase 2a clinical trial of (FX-322-202), would be satisfied by June 30, 2021. As such, we recognized revenue over time as we satisfied this performance obligation.

Accrued research and development expenses

As part of the process of preparing our consolidated financial statements, we are required to estimate our accrued research and development expenses. 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 costs incurred for the services when we have not yet been invoiced or otherwise notified of the actual costs. Most of our service providers invoice us in arrears for services performed, on a pre-determined schedule or when contractual milestones are met; however, some require advance payments. We make estimates of our accrued expenses as of each balance sheet date in our consolidated financial statements based on facts and circumstances known to us at that time. Examples of estimated accrued research and development expenses include fees paid to the following:

•

CROs and other third parties in connection with performing research and development activities and conducting preclinical studies and clinical trials on our behalf;

•

Vendors in connection with preclinical development activities; and

•

CMOs and other vendors in connection with product manufacturing and development and distribution of preclinical supplies.

We base our expenses related to preclinical studies on our estimates of the services received and efforts expended pursuant to quotes and contracts with CROs that conduct and manage preclinical studies and clinical trials and CMOs that manufacture product for our research and development activities on our behalf. The financial terms of these agreements are subject to negotiation, vary from contract to contract, and may result in uneven payment flows. There may be instances in which payments made to our vendors will exceed the level of services provided and result in a prepayment of the expense. In accruing fees, we estimate the time period over which services will be performed and the level of effort to be expended in each period. If the actual timing of the performance of services or the level of effort varies from our estimate, we adjust the accrual or amount of prepaid expense accordingly. Although we do not expect our estimates to be materially different from amounts actually incurred, our understanding of the status and timing of services performed relative to the actual status and timing of services performed may vary and may cause us to report amounts that are too high or too low in any particular period. To date, we have not made any material adjustments to our prior estimates of accrued research and development expenses.

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Leases

The Company elected to early adopt ASC 842, Leases, as of January 1, 2020 and elected the transition method under ASU 2016-02 whereby the Company records a right-to-use asset and a lease liability on the consolidated balance sheet for all leases with terms longer than 12 months. The Company also elected to apply the package of practical expedients intended to ease transition. Accordingly, the Company has only applied ASC 842 to leases existing at January 1, 2020. The Company determines if an arrangement is, or contains, a lease at inception. Operating leases are included in operating lease right-of-issue (“ROU”) assets, other current liabilities, and operating lease liabilities on the consolidated balance sheets.

ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. ROU assets and liabilities are recognized at the lease commencement date based on the present value of lease payments to be made over the lease term. The ROU asset also includes any lease payments made at or before the lease commencement date and excludes lease incentives received. As the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at the lease commencement date in determining the present value of lease payments. The lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Operating lease expense is recognized on a straight-line basis over the lease term. The Company has elected to not apply the recognition requirements of ASC 842 for short-term leases, which is defined as a lease that, at the lease commencement date, has a lease term of 12 months or less and does not include an option to purchase the underlying asset that the Company is reasonably certain to exercise.

For real estate lease agreements entered into or modified after the adoption of ASC 842 that include lease and non-lease components, the Company has elected to account for the lease and non-lease components, such as common area maintenance charges, as a single lease component.

Since the adoption of ASC 842 in 2020, we have entered into one new lease resulting in right of use assets and lease liabilities balances of $31.4 million and $30.6 million, respectively, at December 31, 2021.

Stock-based compensation

We measure stock options and other stock-based awards granted to our employees, directors, consultants, advisors based on the fair value on the date of the grant, awards, net of actual forfeitures, over the requisite service period, which is generally the vesting period of the respective award. For stock-based awards granted to non-employees, compensation expense is recognized over the period during which services are rendered by such non-employees until completed.

We estimate the fair value of each stock option grant on the date of grant using the Black-Scholes option-pricing model, which uses as inputs the fair value of our common stock and assumptions we make for the volatility of our common stock, the expected term of our stock options, the risk-free interest rate for a period that approximates the expected term of our stock options, and our expected dividend yield.

Recent accounting pronouncements

A description of recent accounting pronouncements that may potentially impact our financial position, results of operations, or cash flows is disclosed below:

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The FASB has subsequently issued amendments to ASU 2016-13, which have the same effective date and transition date. These standards require that credit losses be reported using an expected losses model rather than the incurred losses model that was previously used, and establishes additional disclosures related to credit risks. For available-for-sale debt securities with unrealized losses, this standard now requires allowances to be recorded instead of reducing the amortized cost of the investment. These standards limit the amount of credit losses to be recognized for available-for-sale debt securities to the amount by which carrying value exceeds fair value and requires the reversal of previously recognized credit losses if fair value increases. This standard will become effective for the Company on January 1, 2023. The Company is still evaluating the impact of this standard on its consolidated financial statements.

There are no other recent accounting pronouncements that we believe will have a material impact on our consolidated financial statements.

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

We are exposed to market risks in the ordinary course of our business. These risks primarily include interest rate sensitivities. Our interest-earning assets consist of cash, cash equivalents and marketable securities, which are denominated in U.S. dollars. We had cash, cash equivalents and marketable securities of $142.4 million, or 77% of our total assets, at December 31, 2021. Interest income earned on these assets was $0.4 million for the year ended December 31, 2021. Our interest income is sensitive to changes in the general level of interest rates, primarily U.S. interest rates. Such interest-earning instruments carry a degree of interest rate risk however, if a change by 10% in interest rates were to have immediately occurred on December 31, 2021, such change would not have had a material impact on our financial position or results of operations. We had $0.8 million of current debt and $14.2 million non-current debt outstanding as of December 31, 2021.

Item 8. Financial Statements and Supplementary Data.

Our consolidated financial statements, together with the reports of our independent registered public accounting firms, appear at pages F-1 through F-30 of this Annual Report on Form 10-K for the year ended December 31, 2021. An index of those financial statements is found in Item 15 of Part IV of this Annual Report on Form 10-K.

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.

None

Item 9A. Controls and Procedures.

Evaluation of Disclosure Controls and Procedures

We maintain “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended, or the Exchange Act, that are designed to ensure that information required to be disclosed in the reports that we file or submit under the Exchange Act is (1) recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms and (2) accumulated and communicated to our management, including our principal executive and principal financial officer, as appropriate to allow timely decisions regarding required disclosure. Our management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and our management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures. Our disclosure controls and procedures are designed to provide reasonable assurance of achieving their control objectives.

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer (our principal executive officer and principal financial officer, respectively), evaluated the effectiveness of our disclosure controls and procedures as of December 31, 2021. Based on the evaluation of our disclosure controls and procedures as of December 31, 2021, our Chief Executive Officer and Chief Financial Officer concluded that, as of such date, our disclosure controls and procedures were effective at the reasonable assurance level.

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Management’s Annual Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Rules 13a-15(f) and 15d-15(f) of the Exchange Act. 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 policies or procedures may deteriorate. Our internal control over financial reporting is a process designed under the supervision of our principal executive officer and principal financial officer to provide reasonable assurance regarding the reliability of financial reporting and the preparation of our financial statements for external reporting purposes in accordance with U.S. generally accepted accounting principles.

Our management, with the participation of Chief Executive Officer and Chief Financial Officer (our principal executive officer and principal financial officer, respectively), conducted an evaluation of the effectiveness of our internal control over financial reporting based on the criteria set forth in “Internal Control –Integrated Framework (2013)” issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on this evaluation, management concluded that our internal control over financial reporting was effective as of December 31, 2021.

Changes in Internal Control over Financial Reporting

There was no change in our internal control over financial reporting that occurred during the period covered by this Annual Report on Form 10-K that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Item 9B. Other Information.

None

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections.

Not applicable.

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PART III

Item 10. Directors, Executive Officers and Corporate Governance.

The information required by this Item 10 will be included in our Definitive Proxy Statement to be filed with the SEC with respect to our 2022 Annual Meeting of Stockholders and is incorporated herein by reference.

Item 11. Executive Compensation.

The information required by this Item 11 will be included in our Definitive Proxy Statement to be filed with the SEC with respect to our 2022 Annual Meeting of Stockholders and is incorporated herein by reference.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

The information required by this Item 12 will be included in our Definitive Proxy Statement to be filed with the SEC with respect to our 2022 Annual Meeting of Stockholders and is incorporated herein by reference.

Item 13. Certain Relationships and Related Transactions, and Director Independence.

The information required by this Item 13 will be included in our Definitive Proxy Statement to be filed with the SEC with respect to our 2022 Annual Meeting of Stockholders and is incorporated herein by reference.

Item 14. Principal Accounting Fees and Services.

The information required by this Item 14 will be included in our Definitive Proxy Statement to be filed with the SEC with respect to our 2022 Annual Meeting of Stockholders and is incorporated herein by reference.

113

PART IV

Item 15. Exhibits, Financial Statement Schedules.

(1) Financial Statements

The following documents are included on pages F-1 through F-30 attached hereto and are filed as part of this Annual Report on Form 10-K.

Report of an Independent Registered Public Accounting Firm (PCAOB ID: 49) F-2

Consolidated financial statements As of December 31, 2021 and 2020

Consolidated balance sheets F-3

Consolidated statements of operations F-4

Consolidated statements of comprehensive loss F-5

Consolidated statements of stockholders’ equity F-6

Consolidated statements of cash flows F-7

Notes to consolidated financial statements F-8

(2) Financial Statement Schedules:

All financial statement schedules have been omitted because they are not applicable, not required or the information required is shown in the Consolidated Financial Statements or the Notes thereto set forth below beginning on page F-1.

(3) Exhibits.

The following is a list of exhibits filed as part of this Annual Report on Form 10-K.

Incorporated by Reference

114

21.1 Subsidiaries of Frequency Therapeutics, Inc. *

23.1 Consent of RSM US, LLP, Independent Registered Public Accounting Firm *

115

101.INS Inline XBRL Instance Document ***

101.SCH Inline XBRL Taxonomy Extension Schema Document ***

101.CAL Inline XBRL Taxonomy Extension Calculation Linkbase Document ***

101.DEF Inline XBRL Extension Definition Linkbase Document ***

101.LAB Inline XBRL Taxonomy Extension Label Linkbase Document ***

101.PRE Inline XBRL Taxonomy Extension Presentation Linkbase Document ***

* Filed herewith

** Furnished herewith

*** Submitted electronically herewith

† Portions of this exhibit have been omitted pursuant to Item 601 of Regulation S-K promulgated under the Securities Act because the information is not material and would be competitively harmful if publicly disclosed.

# A management contract or compensatory plan or arrangement required to be filed as an exhibit pursuant to Item 15(a)(3) of Form 10‐K.

Item 16. Form 10-K Summary

None.

116

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this Report to be signed on its behalf by the undersigned, thereunto duly authorized.

FREQUENCY THERAPEUTICS, INC.

Date: March 15, 2022 By: /s/ David L. Lucchino

David L. Lucchino

President, Chief Executive Officer and Director (Principal Executive Officer)

POWER OF ATTORNEY

Each person whose individual signature appears below hereby authorizes and appoints David L. Lucchino and Peter P. Pfreundschuh, and each of them, with full power of substitution and resubstitution and full power to act without the other, as his or her true and lawful attorney-in-fact and agent to act in his or her name, place and stead and to execute in the name and on behalf of each person, individually and in each capacity stated below, and to file any and all amendments to this annual report on Form 10-K and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing, ratifying and confirming all that said attorneys-in-fact and agents or any of them or their or his substitute or substitutes may lawfully do or cause to be done by virtue thereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, this Report has been signed below by the following persons on behalf of the Registrant in the capacities and on the dates indicated.

Name Title Date

David L. Lucchino

Peter P. Pfreundschuh

Chairman and Director March 15, 2022

Marc A. Cohen

/s/ Cynthia L. Feldmann Director March 15, 2022

Cynthia L. Feldmann

/s/ Timothy J. Barberich Director March 15, 2022

Timothy J. Barberich

/s/ Michael Huang Director March 15, 2022

Michael Huang

/s/ Robert S. Langer Director March 15, 2022

Robert S. Langer, Sc.D.

/s/ Joel S. Marcus Director March 15, 2022

Joel S. Marcus

117

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Report of an Independent Registered Public Accounting Firm (PCAOB ID: 49) F-2

Consolidated financial statements

Consolidated balance sheets F-3

Consolidated statements of operations F-4

Consolidated statements of comprehensive loss F-5

Consolidated statements of stockholder’s equity F-6

Consolidated statements of cash flows F-7

Notes to consolidated financial statements F-8

F-1

Report of Independent Registered Public Accounting Firm

To the Stockholders and the Board of Directors of Frequency Therapeutics, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Frequency Therapeutics, Inc. and its subsidiaries (the Company) as of December 31, 2021 and 2020, the related consolidated statements of operations, comprehensive loss, stockholders’ equity and cash flows for the years then ended, and the related notes to the consolidated financial statements (collectively, the financial statements). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2021 and 2020, and the results of its operations and its cash flows for the years then ended, in conformity with accounting principles generally accepted in the United States of America.

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 Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with 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. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion.

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.

We have served as the Company's auditor since 2017.

/s/ RSM US LLP

Boston, Massachusetts

March 15, 2022

F-2

Frequency Therapeutics, Inc.

Consolidated Balance Sheets

(in thousands, except share and per share amounts)

Assets

Current assets:

Short-term marketable securities 51,072 —

Prepaid expenses and other current assets 4,041 4,723

Long-term marketable securities 11,719 —

Long-term assets 320 —

Liabilities and Stockholders’ Equity

Current liabilities:

Term loan, current portion 833 —

Lease liabilities, net of current portion 28,851 30,597

Long-term liabilities 87 —

Stockholders’ equity:

Accumulated other comprehensive (loss) income (62 ) 27

Total liabilities and stockholders’ equity $ 185,358 $ 264,722

See accompanying notes.

F-3

Frequency Therapeutics, Inc.

Consolidated Statements of Operations

(in thousands, except share and per share amounts)

Year Ended December 31,

Operating expenses:

Interest expense (764 ) —

Realized (loss) gain on investments (23 ) 84

Foreign exchange gain (loss) 16 (4 )

Other expense, net (266 ) —

Income taxes (15 ) (35 )

Net loss per share-basic and diluted $ (2.47 ) $ (0.82 )

See accompanying notes.

F-4

Frequency Therapeutics, Inc.

Consolidated Statements of Comprehensive Loss

(in thousands, except share and per share amounts)

Year Ended December 31,

Other comprehensive loss:

Unrealized loss on marketable securities (89 ) (27 )

Total comprehensive loss (89 ) (27 )

See accompanying notes.

F-5

Frequency Therapeutics, Inc.

Consolidated Statement of Stockholder’s Equity

(in thousands, except share and per share amounts)

Stock-based compensation expense — — 9,983 — — 9,983

Other comprehensive loss — — — (27 ) — (27 )

Stock-based compensation expense — — 21,750 — — 21,750

Purchase under Employee Stock Purchase Plan 7,064 — 60 — — 60

Forfeiture of restricted stock (2,165 ) — — — — -

Other comprehensive loss — — — (89 ) — (89 )

See accompanying notes

F-6

Frequency Therapeutics, Inc.

Consolidated Statements of Cash Flows

(in thousands)

Year Ended December 31,

Cash flows from operating activities:

Adjustments to reconcile net loss to net cash used in operating activities:

Non-cash interest expense 347 —

Loss on disposal of assets 16 —

Changes in operating assets and liabilities:

Prepaid expenses and other assets (173 ) (626 )

Net cash used in operating activities (76,059 ) (45,188 )

Cash flows from investing activities:

Purchases of property and equipment (2,914 ) (6,671 )

Purchase of marketable securities (92,445 ) (26,345 )

Net cash (used in) provided by investing activities (66,126 ) 10,402

Cash flows from financing activities:

Proceeds from issuance of common stock 1,298 1,545

Proceeds from Employee Stock Purchase Plan 60 —

Proceeds from Private Placement, net of issuance costs — 40,143

Proceeds from Term Loan — 15,000

Net cash provided by financing activities 1,358 56,688

Cash, cash equivalents, and restricted cash at end of period $ 81,334 $ 222,161

Supplemental disclosures:

Cash paid for interest $ 703 $ —

Right-of-use assets in exchange for lease liabilities $ — $ 31,335

See accompanying notes

F-7

Frequency Therapeutics, Inc.

Notes to Consolidated Financial Statements

(Amounts in thousands, except share and per share amounts)

1. Organization

Frequency Therapeutics, Inc., together with its wholly owned subsidiaries, Frequency Therapeutics, PTY, LTD, Frequency Therapeutics Securities Corporation and Frequency Therapeutics Japan KK (Frequency Japan) (the Company), headquartered in Lexington, Massachusetts, was incorporated in November 2014 as a Delaware corporation. Frequency Japan was closed down in February 2021. The Company is a clinical-stage regenerative medicine company focused on developing therapeutics to activate a person’s innate regenerative potential to restore function.

Liquidity and capital resources

The Company has funded its operations primarily with proceeds from the sale of its capital stock, convertible notes and amounts received under a collaboration agreement. The Company has incurred recurring losses since its inception. In addition, as of December 31, 2021, the Company had an accumulated deficit of $180,085. The Company expects to continue to generate operating losses for the foreseeable future. The future viability of the Company is dependent on its ability to raise additional capital to finance its operations. The Company’s inability to raise capital as and when needed could have a negative impact on its financial condition and ability to pursue its business strategies. There can be no assurances that additional funding will be available on terms acceptable to the Company, or at all. The Company believes that existing resources will be sufficient to fund planned operations for at least 12 months from the date the financial statements were available to be issued.

2. Summary of significant accounting policies

Basis of presentation

The accompanying consolidated financial statements have been prepared in accordance with accounting standards set by the Financial Accounting Standards Board (FASB). The FASB sets generally accepted accounting principles (GAAP) that the Company follows to ensure its financial condition, results of operations, and cash flows are consistently reported. References to GAAP issued by the FASB in these notes to the consolidated financial statements are to the FASB Accounting Standards Codification (ASC).

Principles of consolidation

The consolidated financial statements include the accounts of Frequency Therapeutics, Inc. and its wholly owned subsidiaries Frequency Therapeutics Securities Corporation, Frequency Therapeutics PTY, LTD and Frequency Japan through the date of its dissolution. All intercompany transactions and balances have been eliminated.

Use of estimates

The preparation of the Company’s consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, expenses and related disclosure of contingent assets and liabilities at the date of the consolidated financial statements and reported amounts of expenses during the reporting period. On an ongoing basis, the Company’s management evaluates its estimates, which include but are not limited to management’s judgments of accrued expenses, revenue recognition, fair value of common stock, valuation of share-based awards, present value of lease liabilities and income taxes. Actual results could differ from those estimates.

Comprehensive loss

Components of comprehensive income or loss, including net income or loss, are reported in the financial statements in the period in which they are recognized. Other comprehensive income or loss is defined as the change in equity during a period from transactions and other events and circumstances from non-owner sources. Net income (loss) and other comprehensive income (loss) are reported net of any related tax effect to arrive at comprehensive income (loss). Comprehensive loss includes net loss as well as other changes in stockholders’ equity that result from transactions and

F-8

economic events other than those with stockholders which for the years ended December 31, 2021 and 2020 consist of unrealized loss on marketable securities.

Segment information

Operating segments are defined as components of an enterprise about which separate discrete information is available for evaluation by the chief operating decision-maker in deciding how to allocate resources and assess performance. The Company and the Company’s chief operating decision-maker, the Company’s chief executive officer, views the Company’s operations and manages its business as a single operating segment, which is in the business of discovering and developing small molecule drugs that activate progenitor cells within the body to create healthy tissue.

Foreign currency

All periods presented are reported in US dollars. The functional currency for entities outside the United States is the US dollar. Realized and unrealized gains and losses from foreign currency transactions are reflected in the consolidated statements of operations as other expense. During the years ended December 31, 2021 and 2020 the Company recorded $16of foreign currency exchange gains and $4 of foreign currency exchange losses, respectively.

Cash and cash equivalents

The Company considers all highly liquid investments with an original maturity of six months or less at acquisition to be cash equivalents which are stated at fair market value. Cash and cash equivalents at December 31, 2021 and 2020 consists entirely of cash and money market funds.

Restricted cash

The Company has $1,700 of restricted cash as of December 31, 2021 which represents a security deposit on the Company's Lexington, Massachusetts facility. The $1,800 of restricted cash at December 31, 2020 represented the security deposit on the Lexington, Massachusetts facility as well as a $100 security deposit on the Company's previous Woburn, Massachusetts facility.

Marketable securities

Marketable securities represent holdings of available-for-sale marketable debt securities in accordance with the Company’s investment policy. Short-term marketable securities mature within one year from the balance sheet date while long-term marketable securities mature after one year. Investments in marketable securities are recorded at fair value, with any unrealized gains and losses reported within accumulated other comprehensive income as a separate component of stockholders’ equity until realized or until a determination is made that an other-than-temporary decline in market value has occurred. The amortized cost of debt securities is adjusted for amortization of premiums and accretion of discounts to maturity. Such amortization and accretion are reflected as a component of other expense. Interest on securities sold is determined based on the specific identification method and reflected as interest income. Any realized gains or losses on the sale of investment are reflected as realized (loss) gain on investments.

Concentration of credit risk and off-balance sheet risk

Financial instrument that potentially expose the Company to concentrations of credit risk consist primarily of cash and cash equivalents and marketable securities. The Company maintains its cash, cash equivalents, and restricted cash at several accredited financial institutions, in amounts that exceed federally insured limits. Marketable securities consist of short term and long term investments. Management believes that the Company is not exposed to significant credit risk due to the financial position of the depository institutions in which its money market accounts are maintained.

The Company has no significant off-balance sheet arrangements such as foreign exchange contracts, option contracts, or other foreign hedging arrangements.

Significant suppliers

The Company is dependent on third-party manufacturers to supply products for research and development activities of its programs, including preclinical and clinical testing. In particular, the Company relies and expects to continue to rely on a single manufacturer of its product candidates for use in clinical trials. The Company would be adversely affected by a significant interruption in the supply of product for use in clinical programs.

F-9

Fair value measurements

Fair value is defined as the price that would be received upon sale of an asset or paid to transfer a liability between market participants at measurement dates. ASC Topic 820, Fair Value Measurement (ASC 820), establishes a three-level valuation hierarchy for instruments measured at fair value. The hierarchy is based on the transparency of inputs to the valuation of an asset or liability as of the measurement date. The hierarchy defines three levels of valuation inputs, of which the first two are considered observable and the last is considered unobservable:

Level 1 Quoted prices in active markets for identical assets or liabilities.

Level 2 Inputs other than quoted prices included within Level 1 that are either directly or indirectly observable, such as quoted market prices, interest rates and yield curves.

Level 3 Unobservable inputs developed using estimates or assumptions developed by the Company, which reflect those that a market participant would use in pricing the asset or liability.

To the extent that the valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

The carrying values of other current assets, accounts payable, and accrued expenses approximate their fair values due to the short-term nature of these assets and liabilities. The fair value of the Company’s Term Loan is not materially different from the carrying value as presented.

Property and equipment, net

Property and equipment consist of lab equipment, computer equipment, furniture and office equipment and leasehold improvements recorded at cost. These amounts are depreciated using the straight-line method over the estimated useful lives of the assets as follows:

Estimated useful life

Lab equipment 3 years

Software 3 years

Furniture and office equipment 3 years

Leasehold improvements Shorter of the estimated usefullife or lease term

Upon retirement or sale, the cost of the assets disposed of and the related accumulated depreciation are eliminated from the balance sheet and related gains or losses are reflected in the consolidated statements of operations.

Impairment of long-lived assets

The Company continually evaluates long-lived assets for potential impairment when events or changes in circumstances indicate the carrying value of the assets may not be recoverable. Recoverability is measured by comparing the book values of the assets to the expected future net undiscounted cash flows that the assets are expected to generate. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the book values of the assets exceed their fair value. The Company did not recognize any impairment losses for the years ended December 31, 2021 and 2020.

Research and development costs and accruals

Research and development expenses include salaries and benefits, materials and supplies, preclinical and clinical trial expenses, stock-based compensation expense, depreciation of equipment, contract services and other outside expenses. The Company has entered into various research and development-related contracts with research institutions, contract research organizations, contract manufacturers and other companies. These agreements are generally cancelable, and related payments are recorded as research and development expenses as incurred. Costs of certain development activities, such as manufacturing, pre-clinical and clinical trial expenses, are recognized based on an evaluation of the progress to completion of specific tasks. Payments for these activities are based on the terms of the individual arrangements, which may differ from the pattern of costs incurred, and are reflected in the consolidated financial statements as prepaid or accrued research and development costs. Nonrefundable advance payments for goods or services to be received in the future for use in research and development activities are deferred and capitalized. The capitalized amounts are expensed as the related goods are delivered or the services are performed. Costs incurred in obtaining technology licenses are charged to research and

F-10

development expense as acquired in-process research and development if the technology licensed has not reached technological feasibility and has no alternative future use.

Leases

The Company elected to early adopt ASC 842, Leases (ASC 842) as of January 1, 2020 and elected the transition method under ASU 2016-02 whereby the Company records a right-to-use asset and a lease liability on the consolidated balance sheet for all leases with terms longer than 12 months. The Company also elected to apply the package of practical expedients intended to ease transition. Accordingly, the Company has only applied ASC 842 to leases existing at January 1, 2020. The Company determines if an arrangement is, or contains, a lease at inception. Operating leases are included in operating lease right-of-issue (“ROU”) assets, other current liabilities, and operating lease liabilities on the consolidated balance sheets.

ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at the lease commencement date based on the present value of lease payments to be made over the lease term. The ROU asset also includes any lease payments made at or before the lease commencement date and excludes lease incentives received. As the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at the lease commencement date in determining the present value of lease payments. The lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Operating lease expense is recognized on a straight-line basis over the lease term. The Company has elected to not apply the recognition requirements of ASC 842 for short-term leases, which is defined as a lease that, at the lease commencement date, has a lease term of 12 months or less and does not include an option to purchase the underlying asset that the Company is reasonably certain to exercise.

For real estate lease agreements entered into or modified after the adoption of ASC 842 that include lease and non-lease components, the Company has elected to account for the lease and non-lease components, such as common area maintenance charges, as a single lease component.

Collaborative arrangements

The Company analyzes its collaborative arrangements to assess whether they are within the scope of ASC 808, Collaborative Arrangements (“ASC 808”) to determine 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. For collaboration arrangements within the scope of ASC 808 that contain multiple elements, the Company first determines which elements of the collaboration are deemed to be within the scope of ASC 808 and those that are more reflective of a vendor-customer relationship (e.g., a licensing arrangement) where the contracted party has obtained goods or services that are an output of the Company’s ordinary activities in exchange for a consideration and therefore within the scope of ASC 606, Revenue from Contracts with Customers (“ASC 606”). For those elements of the arrangement that are accounted for pursuant to ASC 606, including those to which ASC 606 is applied by analogy, the Company applies the five-step model described in the Company’s revenue recognition policy. For elements of collaborative arrangements that are accounted for pursuant to ASC 808, an appropriate and rational recognition method is determined and applied consistently. Reimbursements from the counterparty that are the result of a collaborative relationship with the counterparty, instead of a customer relationship, such as co-development or clinical activities, are recorded as a reduction to research and development expense as the services are performed. Similarly, amounts that are owed to a collaboration partner related to the co-development clinical activities are recognized as research and development expense.

The Company enters into out-licensing agreements that are within the scope of ASC 606. The terms of such out-license agreements include licenses to functional intellectual property (IP), given the functionality of the intellectual property is not expected to change substantially as a result of the licensor’s ongoing activities. Such arrangements typically include payment of one or more of the following: non-refundable up-front license fees; reimbursement of certain costs; development and regulatory milestone payments and milestone payments based on the level of sales; and royalties on net sales of licensed products.

The Company considers the economic and regulatory characteristics of the licensed IP, research, development, manufacturing and commercialization capabilities of the licensee and the availability of the associated expertise in the general marketplace to determine if it has standalone value at the inception of the licensing arrangement, which would make the license distinct. In addition, the Company considers whether the licensee can benefit from a promise for its intended purpose without the receipt of any additional good or services promised in the contract, whether the value of the license is dependent on the remaining goods and services, whether there are other vendors that could provide the remaining promise, and whether the license is separately identifiable from the remaining good and services. For licenses that are combined with

F-11

other goods and services, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of progress and related revenue recognition. The measure of progress, and thereby periods over which revenue should be recognized, are subject to estimates by management and may change over the course of the research and development and licensing agreement. Such a change could have a material impact on the amount of revenue the Company records in future periods.

Revenue is allocated to the licensed IP on a relative standalone selling price basis and, for functional IP, is recognized at a point when the licensed IP is made available for the customer’s use and benefit, which generally occurs at the inception of the arrangement. However, in cases, where the functionality of the IP is expected to substantively change as a result of activities of the Company that do not transfer additional promised goods or services, or in cases, where there is an expectation that the Company will undertake activities to change the standalone functionality of the IP and the customer is contractually or practically required to use the latest version of the IP, revenue for the license to functional IP is recognized over time.

Development and regulatory milestone fees, which are a type of variable consideration, are recognized as revenue to the extent that it is probable that a significant reversal will not occur. The Company recognizes royalty revenue and sales-based milestones at the later of (i) when the related sales occur, or (ii) when the performance obligation to which the royalty has been allocated has been satisfied.

The Company has entered into a collaboration arrangement with Astellas Pharma Inc. (“Astellas”), as further described in Note 13 of notes to consolidated financial statements.

Revenue recognition

The Company accounts for contracts with customers in accordance with ASC 606, including all amendments thereto. This standard applies to all contracts with customers, except for contracts that are within the scope of other standards, such as collaborative arrangements and leases. The Company’s disclosure within the below sections or elsewhere within these consolidated financial statements reflects the Company’s accounting policies in compliance with this new standard.

Under ASC 606, an entity recognizes revenue when or as its customer obtains control of promised goods or services, in an amount that reflects the consideration that the entity expects to receive in exchange for those goods or services. To recognize revenue for arrangements that an entity determines are within the scope of ASC 606, the entity performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price, including variable consideration, if any; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies its performance obligations. The Company only applies the five-step model to contracts when it is probable that the entity will collect substantially all of the consideration to which it will be entitled in exchange for the goods or services it transfers to the customer. Once a contract is determined to be within the scope of ASC 606, the Company assesses the goods or services promised within each contract and identifies as a performance obligation each promise to transfer to the customer either (a) a good or service (or bundle of goods and services) that is distinct, or (b) a series of distinct goods and services that are substantially the same and have been the same pattern of transfer to the customer.

The Company assesses whether each promised good or service is distinct for the purpose of identifying the performance obligations in the contract. This assessment involves subjective determinations and requires management to make judgments about the individual promised goods or services and whether such are separable from the other aspects of the contractual relationship. Promised goods and services are considered distinct provided that: (i) the customer can benefit from the good or service either on its own or together with other resources that are readily available to the customer (that is, the good or service is capable of being distinct) and (ii) the entity’s promise to transfer the good or service to the customer is separately identifiable from other promises in the contract (that is, the promise to transfer the good or service is distinct within the context of the contract). In assessing whether a promised good or service is distinct, the Company considers factors such as the research, manufacturing and commercialization capabilities of the collaboration partner (the “customer” in this type of arrangement) and the availability of the associated expertise in the general marketplace. The Company also considers the intended benefit of the contract in assessing whether a promised good or service is separately identifiable from other promises in the contract. If a promised good or service is not distinct, an entity is required to combine that good or service with other promised goods or services until it identifies a bundle of goods or services that is distinct. For each arrangement that results in revenues, the Company identifies all performance obligations, which may include, for example, a license to IP and know-how, research and development activities, and/or manufacturing services.

In addition to any upfront payment, if the consideration promised in a contract includes a variable amount, the Company estimates the amount of consideration to which it will be entitled in exchange for transferring the promised goods

F-12

or services to a customer. The Company determines the amount of variable consideration by using the expected value method or the most likely amount method. The Company includes the estimated variable consideration in the transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur. At the end of each subsequent reporting period, the Company re-evaluates the estimated variable consideration included in the transaction price and any related constraint, and if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis in the period of adjustment.

If an arrangement includes development and regulatory milestone payments, the Company evaluates whether the milestones are considered probable of being reached and estimates the amount to be included in the transaction price using the most likely amount method. There is considerable judgment involved in determining whether it is probable that a significant revenue reversal would not occur. If it is probable that a significant revenue reversal will not occur, the associated milestone value is included in the transaction price. Milestone payments that are not within the control of the Company or of the licensee such as regulatory approvals, are generally not considered probable of being achieved until those approvals are received. At the end of each subsequent reporting period, the Company re-evaluates the probability of achievement of all milestones subject to constraint and, if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenues and earnings in the period of adjustment.

For contracts that include sales-based royalties (including milestone payments based on the level of sales) promised in the exchange for licenses of intellectual property, and the license is deemed to be the predominant item to which the royalties relate, the Company recognizes royalty revenue and sales-based milestone payments at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied. In determining the transaction price, the Company adjusts the promised amount of consideration for the effects of the time value of money if the timing of payments provides the Company or the Company’s customer with a significant benefit of financing the transfer of goods and services. The Company does not assess whether a contract has a significant financing component if the expectation at contract inception is such that the period between payment by the licensees and the transfer of the promised goods or services to the licensees will be one year or less. The Company assesses each of its revenue generating arrangements in order to determine whether a significant financing component exists. The Company recognizes as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) each performance obligation is satisfied, either at a point in time or over time. For performance obligations satisfied over time, the Company measures progress toward completion of its performance obligations using an input method based on the Company’s efforts and inputs to satisfy its performance obligations relative to total expected inputs to the satisfaction of that performance obligation.

Amounts received from a customer prior to revenue recognition are recorded as deferred revenue. Amounts received from a customer that are expected to be recognized as revenue within the 12 months following the balance sheet date are classified as a current liability in the accompanying consolidated balance sheets.

Patent costs

The Company expenses patent application and related legal costs as incurred and classifies such costs as general and administrative expenses in the accompanying consolidated statements of operations.

Stock-based compensation

The Company accounts for its stock-based compensation in accordance with ASC Topic 718, Compensation—Stock Compensation (ASC 718). ASC 718 requires all share-based payments to employees and directors to be recognized as expense in the consolidated statements of operations and comprehensive loss based on their grant date fair values. The Company adopted FASB Accounting Standards Update (ASU) 2016-09 which identifies areas for simplification of several areas of share-based payment transactions. The Company treats non-employee grants in a manner consistent with employee grants. The Company estimates the fair value of options granted using the Black-Scholes option pricing model for stock option grants to both employees and non-employees. The Company believes the fair value of the stock options granted to non-employees is more reliably determinable than the fair value of the services provided.

F-13

The Black-Scholes option pricing model requires inputs based on certain subjective assumptions, including (a) the expected stock price volatility, (b) the expected term of the award, (c) the risk-free interest rate and (d) expected dividends. Due to the lack of sufficient company-specific historical and implied volatility data, the Company has based its computation of expected volatility on the historical volatility of a representative group of public companies with similar characteristics to the Company, including stage of product development and life science industry focus. The historical volatility is calculated based on a period of time commensurate with the expected term assumption. The Company uses the simplified method as prescribed by the SEC Staff Accounting Bulletin No. 107, Share-Based Payment, to calculate the expected term for options granted to employees as it does not have sufficient historical exercise data to provide a reasonable basis upon which to estimate the expected term. The expected term is applied to the stock option grant group as a whole, as the Company does not expect substantially different exercise or post-vesting termination behavior among its employee population. For options granted to non-employees, the Company utilizes the contractual term of the share-based payment as the basis for the expected term assumption. The risk-free interest rate is based on a treasury instrument whose term is consistent with the expected term of the stock options. The expected dividend yield is assumed to be zero as the Company has never paid dividends and has no current plans to pay any dividends on its common stock.

The Company expenses the fair value of its share-based compensation awards to employees and non-employees on a straight-line basis over the requisite service period, which is generally the vesting period.

Income taxes

The Company accounts for income taxes using the asset and liability method in accordance with ASC Topic 740, Income Taxes (ASC 740) which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in the consolidated financial statements or in the Company’s tax returns. Deferred tax assets and liabilities are determined on the basis of the differences between the financial statement and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. Changes in deferred tax assets and liabilities are recorded in the provision for income taxes. The Company assesses the likelihood that its deferred tax assets will be recovered from future taxable income and, to the extent it believes, based upon the weight of available evidence, that it is more likely than not that all or a portion of the deferred tax assets will not be realized, a valuation allowance is established through a charge to income tax expense. Potential for recovery of deferred tax assets is evaluated by estimating the future taxable profits expected and considering prudent and feasible tax planning strategies. At December 31, 2021 and 2020, the Company has concluded that a full valuation allowance is necessary for its deferred tax assets (see Note 11).

Net loss per share

Basic net loss per share is computed by dividing net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period. Diluted net loss per share is computed using the weighted-average number of shares of common stock outstanding during the period and, if dilutive, the weighted-average number of potential shares of common stock. Diluted net loss per share is the same as basic net loss per share for the years ended December 31, 2021 and 2020 since all potential shares of common stock instruments are anti-dilutive as a result of the loss for such periods.

The Company’s convertible preferred stock contractually entitled the holders of such shares to participate in dividends but did not contractually require the holders of such shares to participate in losses of the Company. Accordingly, in periods in which the Company reported a net loss, such losses are not allocated to such participating securities. In periods where the Company reported a net loss attributable to common stockholders, diluted net loss per share is the same as basic net loss per share, since dilutive shares of common stock are not assumed to have been issued if their effect is anti-dilutive. The Company reported a net loss attributable to common stockholders for the years ended December 31, 2021 and 2020.

Basic and diluted net loss per share attributable to common stockholders was calculated as follows:

Year Ended December 31,

Numerator:

Denominator:

Net loss per share-basic and diluted $ (2.47 ) $ (0.82 )

F-14

The Company excluded the following potential shares of common stock from the computation of diluted net loss per share attributable to common stockholders because including them would have had an anti-dilutive effect.

Year Ended December 31,

Unvested restricted common stock — 3,093

Unvested restricted stock units 626,300 —

Recently adopted accounting pronouncements

In August 2018, the FASB issued ASU No. 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract. This standard addresses the accounting for implementation costs incurred by a customer in a cloud computing arrangement that is a service contract and also adds certain disclosure requirements related to implementation costs incurred for internal-use software and cloud computing arrangements. The amendment aligns the requirements for capitalizing implementation costs incurred in a cloud computing arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). The Company adopted this standard on January 1, 2021, using a prospective approach. The adoption of this new standard did not have a material impact on the consolidated financial statements.

In December 2019, the FASB issued ASU 2019-12 amending accounting guidance that simplifies the accounting for income taxes, as part of its initiative to reduce complexity in the accounting standards. The amendments eliminate certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. The amendments also clarify and simplify other aspects of the accounting for income taxes. The Company adopted this standard on January 1, 2021 and it did not have a material impact on the consolidated financial statements.

Recently issued accounting pronouncements

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. The Company is an “emerging growth company” as defined in the Jumpstart Our Business Startups Act of 2012, as amended (Jobs Act). The Jobs Act provides that an emerging growth company can take advantage of an extended transition period for complying with new or revised accounting standards. Thus, an emerging growth company can delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. The Company elected to avail itself of this extended transition period and, as a result, we will not be required to adopt new or revised accounting standards on the relevant dates on which adoption of such standards is required for other public companies.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The FASB has subsequently issued amendments to ASU 2016-13, which have the same effective date and transition date. These standards require that credit losses be reported using an expected losses model rather than the incurred losses model that was previously used, and establishes additional disclosures related to credit risks. For available-for-sale debt securities with unrealized losses, this standard now requires allowances to be recorded instead of reducing the amortized cost of the investment. These standards limit the amount of credit losses to be recognized for available-for-sale debt securities to the amount by which carrying value exceeds fair value and requires the reversal of previously recognized credit losses if fair value increases. This standard will become effective for the Company on January 1, 2023. The Company is still evaluating the impact of this standard on its consolidated financial statements.

F-15

3. Fair value measurements

The Company’s financial assets measures at fair value on a recurring basis by level within the fair value hierarchy at December 31, 2021 and 2020 are summarized as follows:

Fair Value Amortization Unrealized Fair Market

Hierarchy Cost (Loss) Value

Fair Value Amortization Unrealized Fair Market

Hierarchy Cost Gain Value

4. Prepaid expenses and other current assets

Prepaid expenses and other current assets consisted of the following:

December 31, December 31,

Rent and deposits 470 —

Research and development expenses 858 1,729

5. Property and equipment

Property and equipment include the following:

December 31, December 31,

Furniture and office equipment 3,238 283

Leasehold improvements - 1,419

Construction in progress - 4,340

Accumulated depreciation (4,184 ) (3,212 )

Property and equipment, net $ 5,522 $ 7,287

The Company recognized $2,775 and $1,146 of depreciation expense for the years ended December 31, 2021 and 2020, respectively.

F-16

6. Accrued expenses

Accrued expenses consist of the following:

December 31, December 31,

Payroll and employee related expenses $ 4,375 $ 5,062

Third-party research and development expenses 840 874

7. Debt

On December 11, 2020, the Company entered into a Loan and Security Agreement (the “Loan Agreement”) with a commercial bank for a Term Loan with a principal balance of $15,000. The Company will make monthly interest only payments through November 30, 2022. The principal balance and interest will be repaid in equal monthly installments after the interest only period and continue through May 1, 2024 (the “Loan Maturity Date”). Advances under the Loan Agreement will bear an interest rate equal to the greater of either (i) 1.50% plus the Prime Rate (as reported in The Wall Street Journal, subject to an interest rate floor of zero) or (ii) 4.75%. The interest rate at December 31, 2021 was 4.75%. Interest related to the Loan Agreement was $764 for the year ended December 31, 2021 and immaterial for the year ended December 31, 2020.

The Company may prepay the advance made under the Loan Agreement in whole, at any time subject to a prepayment premium equal to: (a) 2.0% of the then-outstanding principal amount of the advance, if such prepayment occurs on or prior to the first anniversary of the Closing Date; (b) 1.0% of the then-outstanding principal amount of the advance, if such prepayment occurs after the first anniversary of the Closing Date and on or prior to the second anniversary of the Closing Date; and (c) 0.0% of the then-outstanding principal amount of the advance, if such prepayment occurs after the second anniversary of the Closing Date. The prepayment premium is waived if the Term Loan is refinanced by the bank (in its sole and absolute discretion) on or prior to the Loan Maturity Date.

The Company will pay a final payment of $150, which will occur on the earliest of: (i) the Loan Maturity Date; (ii) the date that the Company prepays all of the outstanding principal in full; (iii) the date the loan payments are accelerated due to an event of default; or (iv) the termination of the Loan Agreement. The Company is recording the final payment as interest expense over the term of the loan. The Term Loan is secured by substantially all of the Company’s assets, excluding intellectual property.

8. Stockholders’ equity

Preferred stock

The Company has authorized 10,000,000 shares of $0.001 par value preferred stock of which no shares were issued or outstanding as of December 31, 2021.

Common stock

The Company has authorized 200,000,000 shares of $0.001 par value common stock of which 34,611,213 were issued and outstanding as of December 31, 2021. Common shares are voting, and dividends may be paid when, as and if declared by the Board of Directors.

The Company has reserved the following shares of common stock for future issuance as of December 31, 2021 and 2020: