Skip to content
KStart free
AI InfrastructureDefenseQuantumAll studies →

DCTH US Equity

Delcath Systems, Inc.Health Care · Surgical & Medical Instruments & Apparatus · CIK 872912 · FY ends Dec 31
$17.15
+0.29 (+1.72%)
USD · as of 2026-08-19 · marketstack

DCTH · 10-K · period ended 2023-12-31

← all DCTH documents
filed 2024-03-26 · EDGAR original ↗

Our rendering of the filing — original pagination and typography are not reproduced, and tables are reduced to their short label cells (the figures live on FA). Nothing is summarized: every line below is the filing's own text.

blocks 6961,295 of 1,431363k characters rendered

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

The following discussion of our financial condition and results of operations should be read in conjunction with our audited consolidated financial statements and notes thereto appearing elsewhere in this Annual Report on Form 10-K.

Overview

We are an interventional oncology company focused on the treatment of primary and cancers metastatic to the liver. Our lead product, the HEPZATO KIT (“HEPZATO” melphalan for Injection/Hepatic Delivery System), a drug/device combination product, was approved by the FDA on August 14, 2023 indicated as a liver-directed treatment for adult patients with uveal melanoma with unresectable hepatic metastases affecting less than 50% of the liver and no extrahepatic disease, or extrahepatic disease limited to the bone, lymph nodes, subcutaneous tissues, or lung that is amenable to resection or radiation. In Europe, the hepatic delivery system is a stand-alone medical device having the same device components as HEPZATO KIT, but without the melphalan hydrochloride and is approved for sale under the trade name CHEMOSAT Hepatic Delivery System for Melphalan, or CHEMOSAT, where it has been used at major medical centers to treat a wide range of cancers in the liver.

In the United States, HEPZATO is considered a combination drug and device product and is regulated as a drug by the FDA. Primary jurisdiction for regulation of HEPZATO has been assigned to the FDA’s Center for Drug Evaluation and Research. The FDA has granted us six orphan drug designations (five for melphalan in the treatment of patients with ocular (uveal) melanoma, cutaneous melanoma, intrahepatic cholangiocarcinoma, hepatocellular carcinoma, and neuroendocrine tumor indications and one for doxorubicin in the treatment of patients with hepatocellular carcinoma).

Our clinical development program for HEPZATO was comprised of the FOCUS Trial, a global registration clinical trial that investigated objective response rate in patients with mUM. We are currently reviewing the incidence, unmet medical need, and development requirements for a broad set of cancers of the liver in order to select a portfolio of follow-on indications that will maximize the value of the HEPZATO KIT. In addition to HEPZATO’s use to treat mUM, we believe that HEPZATO has the potential to treat other liver dominant cancers, such as metastatic colorectal cancer, metastatic neuroendocrine tumors, metastatic breast cancer and intrahepatic cholangiocarcinoma, and plan to begin the study of

47

Table of Contents

HEPZATO KIT to treat such conditions in the near future. We believe that those and similar disease states are areas of unmet medical needs that represent significant market opportunities.

We have sufficient raw material and component constituent parts of HEPZATO KIT to meet the first year of our anticipated demand and we intend to manage supply chain risk through stockpiled inventory and contracting with multiple suppliers for critical components.

On February 28, 2022, CHEMOSAT received Medical Device Regulation (MDR) certification under the European Medical Devices Regulation (EU) 2017/745, which may be considered by jurisdictions when evaluating reimbursement. As of March 1, 2022, we have assumed direct responsibility for sales, marketing and distribution of CHEMOSAT in Europe.

Liquidity and Capital Resources

On December 31, 2023, we had cash, cash equivalents and restricted cash totaling $12.7 million and short-term investments totaling $19.8 million, as compared to cash, cash equivalents and restricted cash totaling $11.8 million on December 31, 2022. During the years ended December 31, 2023 and 2022, we used $31.3 million and $25.0 million, respectively, of cash in our operating activities, and $6.3 million and $0.7 million, respectively, for principal payments of outstanding debt.

Our future results are subject to substantial risks and uncertainties. We have operated at a loss for our entire history and there can be no assurance that we will ever achieve or maintain profitability. We have historically funded our operations primarily with proceeds from sales of common stock, warrants and prefunded warrants for the purchase of common stock and from the exercise of such warrants, sales of preferred stock, proceeds from the issuance of convertible debt and borrowings under loan and security agreements.

Funding Requirements

If there is a substantial delay in the activation of sites approved to administer HEPZATO, we expect to need to raise additional capital under structures available to us, including debt and/or equity offerings, which may not be on terms favorable to us. In a substantially delayed site activation scenario, we will not have sufficient funds to meet our obligations within twelve months from the issuance date of these condensed consolidated financial statements. As such, there is uncertainty regarding our ability to maintain liquidity sufficient to operate our business effectively, which raises substantial doubt about our ability to continue as a going concern.

Debt financing and 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 funds through collaborations, or other similar arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates or grant licenses on terms that may not be favorable to us and/or may reduce the value of our common stock. If we are unable to raise additional funds through equity or debt financings when needed, we may be required to delay, limit, reduce or terminate our product development or future commercialization efforts or grant rights to develop and market our product candidates even if we would otherwise prefer to develop and market such product candidates ourselves.

We also expect to use cash and cash equivalents to fund activities relating to commercial support for HEPZATO, CHEMOSAT and any future clinical research trials and operating activities. Our future liquidity and capital requirements will depend on numerous factors, including our ability to successfully commercialize HEPZATO and CHEMOSAT; the cost of and our ability to obtain additional regulatory approvals for HEPZATO and CHEMOSAT in additional jurisdictions and for additional indications; our ability to build a commercial infrastructure for HEPZATO for the treatment of mUM in the United States; obtaining regulatory approvals and complying with applicable laws and regulations; the timing and effectiveness of product commercialization activities, including marketing arrangements; our headcount growth and associated costs as we expand our research and development and establish a commercial infrastructure; the timing and costs involved in preparing, filing, prosecuting, defending and enforcing intellectual property rights; and the effect of competing technological and market developments.

Capital Commitments

Our capital commitments over the next twelve months include (a) $6.3 million to satisfy accounts payable, accrued expenses, current lease liabilities and current medac settlement and (b) $10.6 million of loan and convertible note principal payments, if the holders do not elect to convert up to $5.0 million of the notes into equity. Additional capital commitments beyond the next twelve months include (a) $0.8 million for settlement of litigation with medac and (b) less than $0.1 million of lease liabilities.

48

Table of Contents

Sources of Liquidity

ATM Sales Agreement

We entered into a Controlled Equity OfferingSM Sales Agreement (“ATM Sales Agreement”), with Cantor Fitzgerald & Co. (the “Sales Agent”), pursuant to which we may offer and sell, at our sole discretion through the Sales Agent, shares of common stock having an aggregate offering price of up to $17.0 million. To date, we have sold approximately $4.0 million of our common stock, prior to issuance costs, under the ATM Sales Agreement. No sales were made during the year ending December 31, 2023.

Avenue Loan Agreement

On August 6, 2021, we entered into the Avenue Loan Agreement with Avenue Venture Opportunities Fund, L.P. (the “Lender,” or “Avenue”), as amended on March 31, 2023, for a term loan in an aggregate principal amount of up to $20.0 million (the “Avenue Loan”). The Avenue Loan bears interest at an annual rate equal to the greater of (a) the sum of 7.7% plus the prime rate as reported in The Wall Street Journal and (b) 10.95%. The interest rate pursuant to the Avenue Loan on December 31, 2023 was 16.20%. The Avenue Loan is secured by all of our assets globally, including intellectual property. The Avenue Loan matures on August 1, 2024. On March 15, 2023, we returned to Avenue $4.0 million held in the restricted cash to pay down a portion of the outstanding loan balance, principal payments of $2.1 million and an incremental 4.25% of the final payment of $0.2 million. On March 31, 2023, we reached an agreement to amend the existing loan agreement with Avenue to defer the interest only period to September 30, 2023 with an additional extension option upon the FDA approval for the HEPZATO KIT and subsequent receipt of at least $10 million from the sale and issuance of equity securities. In exchange for this extension, the Company agreed to provide Avenue with 34,072 warrants to purchase shares of common stock. The exercise price of the warrants is $0.01. On August 14, 2023, the Company received the FDA approval for the HEPZATO KIT and subsequently received over $10 million from the exercise of warrants. At our option, we elected to extend the interest only period to December 31, 2023. Principal payments of approximately $1.0 million began in January 2024.

Private Placements, Common Offering and Warrants

On March 27, 2023, we entered into a securities purchase agreement with certain accredited investors (the “Preferred Purchase Agreement”), pursuant to which we agreed to issue and sell, in a private placement (the “Series F Preferred Offering”), (i) 24,900 shares of our Series F-1 Convertible Preferred Stock, par value $0.01 per share (the “Series F-1 Preferred Stock”), (ii) tranche A warrants (the “Preferred Tranche A Warrant”) to acquire 34,859 shares of Series F-3 Convertible Preferred Stock, par value $0.01 per share (the “Series F-3 Preferred Stock”) and (iii) tranche B warrants (the “Preferred Tranche B Warrant,” together with the Preferred Tranche A Warrant, the “Preferred Warrants”) to acquire 24,900 shares of Series F-4 Convertible Preferred Stock, par value $0.01 per share (the “Series F-4 Preferred Stock”) for an aggregate offering price of $24.9 million before deducting the fees paid to the placement agent and the financial advisors and other financing expenses payable by us.

Also on March 27, 2023, we entered into a securities purchase agreement with the our Chief Executive Officer, Gerard Michel, pursuant to which we agreed to issue and sell, in a private placement (the “Common Offering”, and together with the Series F Preferred Offering, the “Private Placements”), (i) 19,646 shares of common stock, (ii) tranche A warrants to acquire 31,110 shares of common stock (the “Common Tranche A Warrants”, and together with the Preferred Tranche A Warrants, the “Tranche A Warrants”) and (iii) tranche B warrants to acquire 16,666 shares of common stock (the “Common Tranche B Warrants”, and together with the Preferred Tranche B Warrants, the “Tranche B Warrants”) for an approximate aggregate offering price of $0.1 million.

On June 12, 2023, the stockholders approved the Private Placements at the annual general meeting of stockholders and therefore, the Preferred Warrants and Common Warrants issued in the Private Placements are exercisable. The exercise of all such Preferred Warrants and Common Warrants would generate approximately $60.0 million in proceeds. There can be no guarantee that all such Warrants are ever exercised, and if so, there is no guarantee that we will ever receive the full $60.0 million in proceeds. During the twelve months ended December 31, 2023, all of the Preferred Tranche A Warrants were exercised for an aggregate exercise price of $34.9 million into 34,859 shares of Series F-3 Preferred Stock and all of the Common Tranche A Warrants were exercised for an aggregate exercise price of $0.1 million into 31,110 shares of common stock.

As of December 31, 2023, 46,197 shares of our Series F-1, F-2 and F-3 Preferred Stock were converted into 12,073,145 shares of common stock.

49

Table of Contents

Results of Operations

Year ended December 31,

Selling, general and administrative expenses 22,110 17,303

Interest and other income (expense) (9,496) (2,655)

Revenue

We recorded approximately $2.1 million in product revenue during the year ended December 31, 2023. During the same period in 2022, we recorded $2.5 million in product revenue and $0.2 million in other revenue. Our product revenues decreased $0.6 million primarily due to transitioning to direct selling of CHEMOSAT beginning in March 2022. Other revenues decreased as a result of the amortization of our license agreement with medac, pursuant to which medac had served as our exclusive distributor of CHEMOSAT in the United Kingdom and European Union.

Cost of Goods Sold

During the year ended December 31, 2023, cost of goods sold was relatively flat between $0.6 million and $0.7 million for both 2023 and 2022.

Research and Development Expenses

For the year ended December 31, 2023, research and development expenses decreased to $17.5 million from $18.6 million for the year ended December 31, 2022, a decrease of $1.1 million or 6%. The decrease is primarily due to higher expenses for preparation of the pre-NDA meeting in April 2022 and increased third party expenses throughout 2022 related to the NDA resubmission which occurred on February 14, 2023.

Selling, General and Administrative Expenses

For the year ended December 31, 2023, selling, general and administrative expenses increased to $22.1 million from $17.3 million for the year ended December 31, 2022, an increase of $4.8 million or 28%. The increase is primarily due to increased headcount and higher costs incurred to prepare for the commercialization of HEPZATO in the United States in 2023.

Interest Expense, Net

For the year ended December 31, 2023, we recognized $1.4 million of interest expense, as compared to $2.7 million in the prior year, a decrease of $1.3 million. The decrease primarily relates to a reduction in interest expense after we returned $6.3 million to Avenue in the first quarter of 2023. The net interest was further positively affected in 2023 due to investing cash received from the Private Placements in March 2023 and the subsequent warrant exercises in August 2023.

50

Table of Contents

Critical Accounting Estimates

Our consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”). Certain critical accounting estimates have a significant impact on amounts reported in the consolidated financial statements. A summary of those critical accounting estimates is below. Additional details can be found in Note 3 to our audited consolidated financial statements contained in this Annual Report on Form 10-K.

Fair Value Measurements

GAAP emphasizes that fair value is a market-based measurement, not an entity-specific measurement. Therefore, a fair value measurement should be determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair value measurements, GAAP establishes a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy).

Our fair value measurements are generally related to a contingent liability, warrant liability, a preferred stock offering, investments, and stock-based compensation.

Contingent Liabilities

Contingent liabilities are re-measured to fair value each reporting period using projected financial targets, discount rates, probabilities of payment, and projected payment dates. Projected contingent payment amounts are discounted back to the current period using a discounted cash flow model. Projected financial targets are based on our most recent internal operational budgets and may take into consideration alternate scenarios that could result in more or less profitability for the respective service line. Increases or decreases in projected financial targets and probabilities of payment may result in significant changes in the fair value measurements. Increases in discount rates and the time to payment may result in lower fair value measurements. Increases or decreases in any of those inputs in isolation may result in a significantly lower or higher fair value measurement.

Warrant Liability

The valuation of the warrant liability was determined using option pricing models. These models use inputs such as the underlying price of the shares issued at the measurement date, volatility, risk free interest rate and expected life of the instrument. In addition, we used probabilities of recording at least $10 million in quarterly U.S. revenue from the commercialization of HEPZATO as inputs in the model to determine the fair value of warrants liability. We adjust the fair value of the warranty liability at the end of each reporting period.

Stock Based Compensation

Valuation of stock options generally requires certain assumptions, including the fair market value of our common stock (generally an observable market price, as our common stock is publicly traded), the expected term of the financial instrument (judgment is required), the expected volatility of our common stock over the expected term (generally estimated by reference to the historical volatility of our common stock), our expected dividend rate over the expected term (currently estimated as zero, given that we are not projecting profits over the intermediate term) and the expected risk-free rate over the expected term (generally estimated by reference to U.S. treasury instruments with similar remaining terms).

Accrued Expenses

We utilize contract research organizations in order to perform research and development and conduct clinical trials. In some cases, these organizations do not bill on a timely basis. Management monitors certain key drivers of these costs and estimates accruals in an attempt to properly match expenses incurred with the appropriate reporting period. However, there is judgment involved and the actual billings could be more or less than the estimated accrual.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

Not required.

51

Table of Contents

Item 8. Financial Statements and Supplementary Data

Report of Independent Registered Public Accounting Firm (PCAOB ID 688) F-1

Consolidated Balance Sheets at December 31, 2023 and 2022 F-3

Notes to Consolidated Financial Statements F-8

52

Table of Contents

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders and Board of Directors of

Delcath Systems, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets ofDelcath Systems Inc.(the “Company”) and Subsidiaries as of December 31, 2023 and 2022, the related consolidated statements of income operations and comprehensive loss, stockholders’ equity (deficit) and cash flows for each of the two years in the period ended December 31, 2023 and 2022 and the related notes (collectively referred to as 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, 2023 and 2022, and the results of its operations and its cash flows for each of the two years in the period ended December 31, 2023 and 2022, in conformity with accounting principles generally accepted in the United States of America.

Explanatory Paragraph – Going Concern

The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern. As more fully described in Note 1, the Company has a significant working capital deficiency, has incurred significant losses and needs to raise additional funds to meet its obligations and sustain its operations. These conditions raise substantial doubt about the Company’s ability to continue as a going concern. Management’s plans in regard to these matters are also described in Note 1. The consolidated financial statements do not include any adjustments that might result from the outcome of this uncertainty.

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 the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits 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 provides a reasonable basis for our opinion.

Critical Audit Matters

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

Issuance of Preferred Equity and Warrant Liabilities

Critical Audit Matter Description

As described in Note 12 to the consolidated financial statements, the Company entered into a securities purchase agreement in March 2023, in which the Company issued and sold in a private placement several classes of Series F preferred shares and warrants. We identified the evaluation of the transaction date fair value and allocation of proceeds to the preferred shares and warrants as a critical audit matter.

F-1

Table of Contents

The principal consideration for our determination that the evaluation of the transaction date fair values and allocation of proceeds to the preferred shares and warrants was a critical audit matter is the high degree of subjective auditor judgment associated with evaluating management’s determination of the fair values, which is primarily due to the complexity of the valuation models used and the sensitivity of the underlying significant assumptions. The key assumptions used within the valuation models included probabilities of successful outcomes and prospective financial information, including future revenue growth. The calculated fair values are sensitive to changes in these key assumptions.

How the Critical Audit Matter was addressed in the Audit

Our audit procedures related to the evaluation of the transaction date fair values and allocation of proceeds to the preferred shares and warrants included the following, among others:

•We evaluated the design effectiveness of certain controls over the transaction-date valuation process, including controls over the development of the key assumptions such as the revenue growth and the probabilities of success.

•We obtained the valuation report from management and the third-party specialist engaged by management.

i.We assessed the qualifications and competence of management and the third-party specialist; and

ii.We evaluated the methodologies used to determine the fair values of the preferred shares and warrants.

•We tested the assumptions used within the valuation model to estimate the fair values of the preferred shares and warrants, which included key assumptions such as the future revenue growth, probabilities of success and volatility.

•We assessed the reasonableness of management’s forecast by inquiring with management to understand how the forecast was developed and comparing the projections to historical results and external sources including industry trends and peer companies’ historical data.

•We involved an internal valuation specialist who assisted in the evaluation and testing performed of the reasonableness of significant assumptions to the models, including the applied discount rate.

/s/ Marcum LLP

Marcum LLP

We have served as the Company’s auditor since 2018.

New York, NY

March 26, 2024

F-2

Table of Contents

DELCATH SYSTEMS, INC.

Consolidated Balance Sheets

(in thousands, except share and per share data)

Assets

Current assets

Short-term investments 19,808 —

Accounts receivable, net 241 366

Prepaid expenses and other current assets 1,091 1,969

Property, plant and equipment, net 1,352 1,422

Liabilities and Stockholders’ Equity (Deficit)

Current liabilities

Lease liabilities, current 37 186

Convertible notes payable, current 4,911 —

Warrant Liability 5,548 —

Other liabilities, non-current 840 1,144

Loan payable, non-current — 3,070

Convertible notes payable, non-current — 4,772

Commitments and contingencies (see note 15)

Stockholders’ equity (deficit)

Accumulated other comprehensive income (loss) 135 (83)

Total stockholders’ equity (deficit) 15,777 (5,859)

Total liabilities and stockholders’ equity $ 38,613 $ 17,862

See Accompanying Notes to these Consolidated Financial Statements.

F-3

Table of Contents

DELCATH SYSTEMS, INC.

Consolidated Statements of Operations and Comprehensive Loss

(in thousands, except share and per share data)

Year ended December 31,

Other revenue — 171

Operating expenses:

Selling, general and administrative expenses 22,110 17,303

Change in fair value of warrant liability (7,998) —

Other income (expense) (59) 30

Comprehensive (loss) income:

Unrealized gains (loss) on investments 157 —

Foreign currency translation adjustments 61 101

Common share data:

Basic and diluted loss per common share $ (2.94) $ (4.12)

See Accompanying Notes to these Consolidated Financial Statements.

F-4

Table of Contents

DELCATH SYSTEMS, INC.

Consolidated Statements of Stockholders’ Equity (Deficit)

(in thousands, except share and per share data)

Preferred Stock$0.01 Par Value Common Stock$0.01 Par Value

Compensation expense for issuance of stock options — — — — 8,090 — — 8,090

Issuance of common stock related to stock option exercises — — 819 — 4 — — 4

Conversion of Series E Preferred Shares to common stock (100) — 10,000 — — — — —

Unrealized gain on investments — — $ — — — — 157 157

Foreign currency translation adjustments — — — — — — 61 61

See Accompanying Notes to these Consolidated Financial Statements.

F-5

Table of Contents

DELCATH SYSTEMS, INC

Consolidated Statements of Stockholders’ Equity (Deficit), Continued

(in thousands, except share and per share data)

Preferred Stock$0.01 Par Value Common Stock$0.01 Par Value

Compensation expense for issuance of stock options — — — — 7,941 — — 7,941

Foreign currency translation adjustments — — — — — — (101) (101)

See Accompanying Notes to these Consolidated Financial Statements.

F-6

Table of Contents

DELCATH SYSTEMS, INC.

Consolidated Statements of Cash Flows

(in thousands, except share and per share data)

Years Ended December 31,

Cash flows from operating activities:

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

Stock option compensation expense 8,151 7,941

Warrant liability fair value adjustment 7,998 —

Amortization of debt discount 776 768

Interest expense accrued related to convertible notes 160 160

Amortization of premiums and discounts on marketable securities (151) —

Changes in assets and liabilities:

Prepaid expenses and other assets 1,029 774

Accounts payable and accrued expenses (199) 1,798

Other liabilities, non-current (537) 621

Deferred revenue — (170)

Net cash used in operating activities (31,251) (24,950)

Cash flows from investing activities:

Purchases of investments (19,651) —

Sales and maturities of investments — —

Purchase of property, plant and equipment (58) (209)

Net cash used in investing activities (19,709) (209)

Cash flows from financing activities:

Proceeds from the exercise of warrants 35,004 —

Proceeds from the exercise of stock options 4 —

Net cash provided by financing activities 51,778 10,143

Foreign currency effects on cash 56 (115)

Net increase (decrease) in total cash 874 (15,131)

Total Cash, Cash Equivalents and Restricted Cash:

Cash, Cash Equivalents and Restricted Cash consisted of the following:

Years Ended December 31,

Supplemental Disclosure of Cash Flow Information:

Cash paid during the periods for:

Supplemental Disclosure of Non-Cash Investing and Financing Activities:

Right of use assets obtained in exchange for lease obligations $ 84 $ 86

Conversion of mezzanine equity to common shares $ 11,269 $ —

Conversion of mezzanine equity to preferred shares $ 7,099 $ —

See Accompanying Notes to these Consolidated Financial Statements.

F-7

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

(1) Description of Business

The Company is an interventional oncology company focused on the treatment of primary and cancers metastatic to the liver. The Company’s lead product, the HEPZATOTM KIT (“HEPZATO” melphalan for Injection/Hepatic Delivery System), a drug/device combination product, was approved by the US Food and Drug Administration (the “FDA”) on August 14, 2023, indicated as a liver-directed treatment for adult patients with uveal melanoma with unresectable hepatic metastases affecting less than 50% of the liver and no extrahepatic disease, or extrahepatic disease limited to the bone, lymph nodes, subcutaneous tissues, or lung that is amenable to resection, or radiation. In Europe, the hepatic delivery system is a stand-alone medical device having the same device components as HEPZATO KIT, but without the melphalan hydrochloride and is approved for sale under the trade name CHEMOSAT Hepatic Delivery System for Melphalan, or CHEMOSAT, where it has been used at major medical centers to treat a wide range of cancers in the liver. The first commercial use of HEPZATO for the treatment of mUM occurred in January 2024.

In the United States, HEPZATO is considered a combination drug and device product and is regulated as a drug by the FDA. Primary jurisdiction for regulation of HEPZATO has been assigned to the FDA’s Center for Drug Evaluation and Research. The FDA has granted Delcath six orphan drug designations (five for melphalan in the treatment of patients with ocular (uveal) melanoma, cutaneous melanoma, intrahepatic cholangiocarcinoma, hepatocellular carcinoma, and neuroendocrine tumor indications and one for doxorubicin in the treatment of patients with hepatocellular carcinoma).

The Company has sufficient raw material and component constituent parts of HEPZATO KIT to meet the first year of its anticipated demand and it intends to manage supply chain risk through stockpiled inventory and contracting with multiple suppliers for critical components.

On February 28, 2022, CHEMOSAT received Medical Device Regulation (MDR) certification under the European Medical Devices Regulation (EU) 2017/745, which may be considered by jurisdictions when evaluating reimbursement. As of March 1, 2022, the Company assumed direct responsibility for sales, marketing and distribution of CHEMOSAT in Europe.

The Company’s clinical development program for HEPZATO was comprised of the FOCUS Clinical Trial for Patients with metastatic hepatic dominant Uveal Melanoma (the “FOCUS Trial”), a global registration clinical trial that investigated objective response rate in patients with metastatic uveal melanoma (“mUM”). The current focus of the Company’s clinical development program is to generate clinical data for CHEMOSAT and HEPZATO in patients with mUM, either as monotherapy or in combination with immunotherapy. The Company extects that this will support increased clinical adoption of and reimbursement for CHEMOSAT in Europe, and to support reimbursement in various jurisdictions, including the United States. In addition to HEPZATO’s use to treat mUM, the Company believes that HEPZATO has the potential to treat cancers in the liver, such as metastatic colorectal cancer, metastatic neuroendocrine tumors, metastatic breast cancer and intrahepatic cholangiocarcinoma, and plans to begin one or more studies of HEPZATO KIT to treat such conditions in 2024. The Company believes that those and similar disease states are areas of unmet medical needs that represent significant market opportunities.

Risks and Uncertainties

The Company is subject to risks common to companies in the biopharmaceutical industry including, but not limited to, the risks associated with developing product candidates and successfully launching and commercializing its drug/device combination products, the Company’s ability to obtain regulatory approval of its such products in the United States and other geography markets, the uncertainty of the broad adoption of its approved products by physicians and consumers, and significant competition.

In addition, high rates of inflation have resulted in the U.S. Federal Reserve raising interest rates. Increases in interest rates, especially if coupled with reduced government spending and volatility in financial markets, may further increase economic uncertainty and heighten these risks. Furthermore, if additional banks and financial

F-8

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

institutions enter receivership or become insolvent in the future in response to financial conditions affecting the banking system and financial markets, the Company or its partners’ ability to access existing cash, cash equivalents and investments may be threatened and could have a material adverse effect on the Company’s business and financial condition, including the Company’s ability to access additional capital on favorable terms, or at all, which could in the future negatively affect the Company’s ability to pursue its business strategy.

Liquidity and Going Concern

On December 31, 2023, the Company had cash, cash equivalents and restricted cash totaling $12.7 million and short-term investments totaling $19.8 million, as compared to cash, cash equivalents and restricted cash totaling $11.8 million at December 31, 2022. During the twelve months ended December 31, 2023, the Company used $31.3 million of cash in its operating activities and $6.3 million for principal payments.

The Company’s future results are subject to substantial risks and uncertainties. The Company has operated at a loss for its entire history and there can be no assurance that it will ever achieve or maintain profitability. The Company has historically funded its operations primarily with proceeds from sales of common stock, warrants and prefunded warrants for the purchase of common stock, sales of preferred stock, proceeds from the issuance of convertible debt and borrowings under loan and security agreements.

If there is a substantial delay in the activation of sites approved to administer HEPZATO, the Company expects to need to raise additional capital under structures available to the Company, including debt and/or equity offerings, which may not be on favorable terms. In a substantially delayed site activation scenario, the Company would not have sufficient funds to meet its obligations within twelve months from the issuance date of these condensed consolidated financial statements. As such, there is uncertainty regarding the Company’s ability to maintain liquidity sufficient to operate its business effectively, which raises substantial doubt about the Company’s ability to continue as a going concern. Debt financing and equity financing, if available, may involve agreements that include covenants limiting or restricting the Company’s ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. If the Company raises funds through collaborations, or other similar arrangements with third parties, it may have to relinquish valuable rights to its technologies, future revenue streams, research programs or product candidates or grant licenses on terms that may not be favorable to the Company and/or may reduce the value of its common stock. If the Company is unable to raise additional funds through equity or debt financings when needed, it may be required to delay, limit, reduce or terminate its product development or future commercialization efforts or grant rights to develop and market its product candidates even if the Company would otherwise prefer to develop and market such product candidates itself.

The Company also expects to use cash and cash equivalents to fund activities relating to commercial support for HEPZATO, CHEMOSAT and any future clinical research trials and operating activities. The Company’s future liquidity and capital requirements will depend on numerous factors, including the initiation and progress of clinical trials and research and product development programs; obtaining regulatory approvals and complying with applicable laws and regulations; the timing and effectiveness of product commercialization activities, including marketing arrangements; the timing and costs involved in preparing, filing, prosecuting, defending and enforcing intellectual property rights; and the effect of competing technological and market developments.

The Company’s capital commitments over the next twelve months include (a) $6.3 million to satisfy accounts payable, accrued expenses, current lease liabilities and current medac settlement and (b) $10.6 million of loan and convertible note principal payments, if the holders do not elect to convert up to $5.0 million of the notes into equity. Additional capital commitments beyond the next twelve months include (a) less than $0.1 million of lease liabilities; and (b) $0.8 million for settlement of litigation with medac.

F-9

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

(2) Basis of Consolidated Financial Statement Presentation

The accounting and financial reporting policies of the Company conform to generally accepted accounting principles in the United States of America (“GAAP”). The preparation of consolidated financial statements in conformity with GAAP requires management to make assumptions and estimates that impact the amounts reported in the Company’s consolidated financial statements. The consolidated financial statements include the accounts of all entities controlled by the Company. All significant inter-company accounts and transactions are eliminated.

(3) Summary of Significant Accounting Policies

Use of Estimates

The Company bases its estimates and judgments on historical experience and on various other assumptions that it believes are reasonable under the circumstances. The amounts of assets and liabilities reported in the Company’s consolidated balance sheets and the amount of revenues and expenses reported for each of the periods presented are affected by estimates and assumptions, which are used for, but not limited to, the accounting for valuation of warrants, stock-based compensation, valuation of inventory, impairment of long-lived assets, income taxes and operating expense accruals. Such assumptions and estimates are subject to change in the future as additional information becomes available or as circumstances are modified. Actual results could differ from these estimates.

Cash Equivalents and Concentrations of Credit Risk

The Company considers investments with original maturities of three months or less at date of acquisition to be cash equivalents. The Company has deposits that exceed amounts insured by the Federal Deposit Insurance Corporation; however, the Company does not consider this a significant concentration of credit risk based on the strength of the financial institution.

Restricted Cash

Cash and cash equivalents that are restricted as to withdrawal or use under the terms of certain contractual agreements are recorded as restricted cash on the accompanying consolidated balance sheets.

Investments

Investments classified as short-term have maturities of less than one year. Investments classified as long-term are those that: (i) have a maturity of greater than one year, and (ii) the Company does not intend to liquidate within the next twelve months, although these funds are available for use and, therefore, are classified as available-for-sale. The Company’s investment strategy is to buy short-duration Treasury bills (T-bills). As of December 31, 2023, all investments held by the Company had remaining contractual maturities of less than five months.

Accounts Receivable

Accounts receivable, principally trade, are generally due within 30 days and are stated at amounts due from customers. Collections and payments from customers are monitored and a provision for estimated credit losses may be created based upon historical experience and specific customer collection issues that may be identified.

Inventories

Inventories are valued at the lower of cost or net realizable value (“NRV”) using the first-in, first-out method. The reported “NRV” of inventory includes finished saleable products, work-in-process, and raw materials that will be sold or used in future periods. The Company reserves for expired, obsolete, and slow-moving inventory.

Property, Plant and Equipment

Property, plant, and equipment are recorded at cost, less accumulated depreciation. The Company provides for depreciation on a straight-line basis over the estimated useful lives of the assets which range from three to seven

F-10

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

years. Leasehold improvements will be amortized over the shorter of the lease term or the estimated useful life of the related assets when they are placed into service. The Company evaluates property, plant and equipment for impairment periodically to determine if changes in circumstances or the occurrence of events suggest the carrying value of the asset or asset group may not be recoverable. Maintenance and repairs are charged to operations as incurred. Expenditures which substantially increase the useful lives of the related assets are capitalized.

Leases

The Company determines if an arrangement is a lease at inception, in accordance with Accounting Standards Codification (“ASC”) Topic 842, Leases. All operating lease commitments with a lease term greater than 12 months are recognized as right-of-use assets and lease liabilities, on a discounted basis on the balance sheet. Leases with an initial term of 12 months or less are not recorded on the balance sheet. Certain of the Company’s lease agreements include lease payments that are adjusted periodically for an index or rate. The leases are initially measured using the present value of the projected payments adjusted for the index or rate in effect at the commencement date. In addition to rent, the leases may require the Company to pay additional amounts for taxes, insurance, maintenance and other expenses, which do not transfer a good or service to the Company and are generally referred to as non-lease components. Variable non-lease components are not measured as part of the right-of-use asset and liability. Only when lease components and their associated non-lease components are fixed are they accounted for as a single lease component and are recognized as part of a right-of-use asset and liability. The Company’s lease agreements do not contain any material residual value guarantees or material restrictive covenants.

The Company may have options to renew lease terms for facilities and other assets. Some leases contain clauses for renewal at the Company’s option with renewal terms that generally extend the lease term from 1 to 5 years. The exercise of lease renewal options is generally at the Company’s sole discretion. The Company evaluates renewal and termination options at the lease commencement date to determine if it is reasonably certain to exercise the option on the basis of economic factors.

Fair Value Measurements

The Company adheres to ASC 820, Fair Value Measurement, which defines fair value, establishes a framework for measuring fair value, and expands disclosures about fair value measurements. ASC 820 applies to reported balances that are required or permitted to be measured at fair value under existing accounting pronouncements; accordingly, the standard does not require any new fair value measurements of reported balances.

ASC 820 emphasizes that fair value is a market-based measurement, not an entity-specific measurement. Therefore, a fair value measurement should be determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair value measurements, ASC 820 establishes a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy).

•Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;

•Level 2: Quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability;

•Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity).

In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability.

F-11

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

Revenue Recognition

Revenue is generated from proprietary and partnered product sales and license and royalty arrangements. Revenue is recognized when or as the Company transfers control of the promised goods or services to its customers in an amount that reflects the consideration to which the Company expects to be entitled to in exchange for those goods or services. When obligations or contingencies remain after the products are shipped, such as training and certifying the treatment centers, revenue is deferred until the obligations or contingencies are satisfied.

The Company may enter into contracts with partners that contain multiple elements such as licensing, development, manufacturing, and commercialization components. These arrangements are often complex, and the Company may receive various types of consideration over the life of the arrangement, including up-front fees, reimbursements for research and development services, milestone payments, payments on product shipments, margin sharing arrangements, license fees and royalties.

The Company recognizes revenue in accordance with ASC 606, Revenue from Contracts with Customers. The core principle of ASC 606 requires that an entity recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASC 606 defines a five-step process to achieve this core principle and, in doing so, it is possible more judgment and estimates may be required within the revenue recognition process, including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation.

The following five steps are applied to achieve that core principle:

•Step 1: Identify the contract with the customer;

•Step 2: Identify the performance obligations in the contract;

•Step 3: Determine the transaction price, including an estimation of any variable consideration expected to be received in connection with the contract;

•Step 4: Allocate the transaction price to the performance obligations in the contract; and

•Step 5: Recognize revenue when the company satisfies a performance obligation.

Each of these steps in the revenue recognition process requires management to make judgments and/or estimates. The most significant judgements and estimates involve the determination of variable consideration to be included in the transaction price. Variable consideration is recognized at an amount management believes is not subject to significant reversal and is adjusted at each reporting period if the most likely amount of expected consideration changes or becomes fixed. Management believes this provides a reasonable basis for recognizing revenue; however, actual results could differ from estimates and significant changes in estimates could impact the Company’s results of operations in future periods. The Company’s total revenue and accounts receivable concentration from a CHEMOSAT customer for the year ended and as of December 31, 2023 was 16.1% and 21.1%, respectively, and 20.8% and 41.6%, respectively for the year ended December 31, 2022.

As required by ASC 606, the Company disaggregates its revenue into the categories of product revenue and other revenue. The Company recognizes product revenue and milestone payments at a point in time, whereas other revenues (primarily license fees) are recognized over time. Milestone payments that are contingent upon the occurrence of future events, are evaluated and recorded at the most likely amount, and to the extent that it is probable that a significant reversal will not occur when the associated uncertainty is resolved. See Note 15 – Commitments and Contingencies – Litigations, Claims and Assessments – medac Matter.

F-12

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

Selling, General and Administrative

Selling, general and administrative costs include personnel costs and related expenses for the Company’s sales, marketing, general management and administrative staff, recruitment, costs related to the Company’s commercialization efforts, professional service fees, professional license fees, business development and certain general legal activities. All such costs are charged to expense when incurred.

Research and Development

Research and development costs include the costs of materials used for clinical trials, personnel costs associated with device and pharmaceutical development expenses, clinical affairs, medical affairs, medical science liaisons, and regulatory affairs, costs of outside services and applicable indirect costs incurred in the development of the Company’s proprietary drug delivery system. All such costs are charged to expense when incurred.

Stock Based Compensation

The Company accounts for its share-based compensation in accordance with the provisions of ASC 718, Stock-Based Compensation, which establishes accounting for equity instruments exchanged for services. Under the provisions of ASC 718, share-based compensation is measured at the grant date, based upon the fair value of the award, and is recognized as an expense over the option holders’ requisite service period, which is generally the vesting period of the equity grant. The Company expenses its share-based compensation granted under the accelerated method, which treats each vesting tranche as if it were an individual grant.

The Company periodically grants stock options for a fixed number of shares of common stock to its employees, directors, and non-employee contractors, with an exercise price greater than or equal to the fair market value of the common stock at the date of the grant. The Company estimates the fair value of stock options using the Black-Scholes option pricing model. Key inputs used to estimate the fair value of stock options include the exercise price of the option, the expected term, the expected volatility of the stock over the option’s expected term, the risk-free interest rate over the option’s expected term, and the expected annual dividend yield. Estimates of fair value are not intended to predict actual future events or the value ultimately realized by persons who receive equity awards.

Income Taxes

The Company accounts for income taxes following the asset and liability method in accordance with the ASC 740, Income Taxes. Under such method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the consolidated financial statement carrying amounts of existing assets and liabilities and their respective tax bases. The Company applies the accounting guidance issued to address the accounting for uncertain tax positions. This guidance clarifies the accounting for income taxes, by prescribing a minimum recognition threshold a tax position is required to meet before being recognized in the financial statements as well as provides guidance on derecognition, measurement, classification, interest and penalties, accounting in interim periods, disclosure, and transition. The Company classifies interest and penalty expense related to uncertain tax positions as a component of income tax expense. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years that the asset is expected to be recovered or the liability settled. A valuation allowance is provided when it is more likely than not that some portion or all of a deferred tax asset will not be realized. The ultimate realization of deferred tax assets depends on the generation of future taxable income during the period in which related temporary differences become deductible. The Company considers the scheduled reversal of deferred tax liabilities, projected future taxable income and tax planning strategies in its assessment of a valuation allowance. See Note 17 for additional information.

Segment Information

A single management team that reports to the Chief Executive Officer comprehensively manages the business. Accordingly, the Company does not have separately reportable segments.

F-13

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

Foreign Currency and Currency Translation

Transactions that are denominated in a foreign currency are remeasured into the functional currency at the current exchange rate on the date of the transaction. Any foreign currency-denominated monetary assets and liabilities are subsequently remeasured at current exchange rates, with gains or losses recognized as foreign exchange (losses)/gains in the statements of operations.

The assets and liabilities of the Company’s international subsidiaries are translated from their functional currencies into United States dollars at exchange rates prevailing at the balance sheet date. The majority of the foreign subsidiaries revenues and operating expenses are denominated in Euros. The reporting currency for the Company is the United States dollar. Average rates of exchange during the period are used to translate the statement of operations, while historical rates of exchange are used to translate any equity transactions.

Translation adjustments arising on consolidation due to differences between average rates and balance sheet rates, as well as unrealized foreign exchange gains or losses arising from translation of intercompany loans that are of a long-term-investment nature, are recorded in other comprehensive income.

Subsequent Events

Management has evaluated events occurring subsequent to the consolidated balance sheet date, through March 26, 2024, which is the date the consolidated financial statements were issued, determining all subsequent events have been disclosed.

Recently Issued Accounting Pronouncements

ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The disclosure requirements must be applied retrospectively to all prior periods presented in the financial statements. The effective date for the standard is for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. The Company is currently evaluating the effects adoption of this guidance will have on the consolidated financial statements.

ASU 2023-09, Improvements to Income Tax Disclosures

On December 14, 2023, the FASB issued, ASU 2023-09, Improvements to Income Tax Disclosures, a final standard on improvements to income tax disclosures. The standard requires disaggregated information about a reporting entity’s effective tax rate reconciliation as well as information on income taxes paid. The standard applies to all entities subject to income taxes and is intended to benefit investors by providing more detailed income tax disclosures that would be useful in making capital allocation decisions. For public business entities (PBEs), the new requirements will be effective for annual periods beginning after December 15, 2024. The guidance will be applied on a prospective basis with the option to apply the standard retrospectively. The Company is currently in the process of evaluating the effect of this guidance on its financial statements.

F-14

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

(4) Cash, Cash Equivalents and Restricted Cash

Cash and cash equivalents that are restricted as to withdrawal or use under the terms of certain contractual agreements are recorded in Restricted Cash on the balance sheet. Restricted cash does not include required minimum balances.

Restricted balance for loan agreement — 4,000

Letters of credit — 101

Security for credit cards 50 50

On March 15, 2023, the Company returned to Avenue the $4.0 million held in restricted cash to pay down a portion of the outstanding Avenue Loan balance. See Note 11 - Loans and Convertible Notes Payable - Term Loan from Avenue Venture Opportunities Fund, L.P. for more information. On March 31, 2023, the letter of credit for the sub-lease agreement for office space at 1633 Broadway, New York, NY expired.

(5) Investments

Marketable debt securities held by the Company are classified as available-for-sale pursuant to ASC 320, Investments - Debt and Equity Securities, and carried at fair value in the accompanying condensed consolidated balance sheets.

The following table summarizes the gross unrealized gains and losses on the Company’s marketable securities:

Gross Unrealized

Amortized Cost Gains Losses Credit Losses Estimated Fair Value

Classified as:

Short-term investments $ 19,808

As of December 31, 2023, there was $0.2 million of interest receivable related to the outstanding debt securities held by the Company.

F-15

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

(6) Inventories

Inventories consist of:

(7) Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets include the following:

Clinical trial expenses $ 222 $ 1,630

Interest Receivable 151 —

Total prepaid expenses and other current assets $ 1,091 $ 1,969

(8) Property, Plant, and Equipment

Property, plant, and equipment consists of:

Buildings and land $ 1,318 $ 1,301 30 years - Buildings

Enterprise hardware and software 1,857 1,855 3 years

Leaseholds 1,787 1,774 Lesser of lease term or estimated useful life

Property, plant and equipment, gross 6,427 6,353

Property, plant and equipment, net $ 1,352 $ 1,422

Depreciation expense for the years ended December 31, 2023 and 2022 was $0.1 million and $0.1 million, respectively.

F-16

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

(9) Accrued Expenses

Current accrued expenses include the following:

Compensation, excluding taxes 1,859 1,040

Interest on convertible note 713 553

(10) Leases

The Company recognizes right-of-use (“ROU”) assets and lease liabilities when it obtains the right to control an asset under a leasing arrangement with an initial term greater than twelve months. The Company leases its facilities under non-cancellable operating leases.

The Company evaluates the nature of each lease at the inception of an arrangement to determine whether it is an operating or financing lease and recognizes the ROU asset and lease liabilities based on the present value of future minimum lease payments over the expected lease term. The Company’s leases do not generally contain an implicit interest rate and therefore the Company uses the incremental borrowing rate it would expect to pay to borrow on a similar collateralized basis over a similar term in order to determine the present value of its lease payments.

On June 25, 2020, the Company entered into a sub-lease agreement (the “2021 Sub-Lease”) with its previous sub-lessee pursuant to which, effective August 2, 2021, the previous sub-lessee would become the lessee and the Company would then sublease its portion of the premises in Galway, Ireland from the previous sub-lessee. The Company’s rent expense under the 2021 Sub-Lease is approximately $3,700 per month for a term of five years.

On September 22, 2020, the Company entered into an amendment to a sub-lease agreement executed in March 2016 for approximately 6,877 square feet of office space at 1633 Broadway, New York, NY. The term of the sub-lease agreement began in April 2016 and, pursuant to amendments was extended through August 2023. As of August 31, 2023, this lease has been on a month-to-month basis. No ROU assets or lease liabilities are recognized on the balance sheet for this arrangement. The Company ended the sublease for its former corporate offices at 1633 Broadway, New York, NY in February 2024.

For the years ended December 31, 2023 and 2022, lease expense of less than $0.2 million and $0.1 million, respectively, was recorded for short-term leases.

The following table summarizes the Company’s operating leases as of December 31, 2023:

U.S. Ireland Total

Lease cost

Operating cash flows from operating leases $ 238 $ 33 $ 271

Weighted average remaining lease term — 2.6

Weighted average discount rate - operating leases 8 % 8 %

F-17

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

Maturities of the Company’s operating leases, excluding short-term leases, are as follows:

U.S. Ireland Total

Less present value discount — (11) (11)

(11) Loans and Convertible Notes Payable

Gross Discount Net Gross Discount Net

Convertible notes payable - current 5,000 (89) 4,911 — — —

Convertible notes payable - non-current — — — 5,000 (228) 4,772

[1]The gross amount includes the 4.25% final payment of $0.5 million.

Remaining maturities of the Company’s loan and convertible note payables are as follows:

Loans ConvertibleNotes Total

Year ended December 31, 2025 — — —

Term Loan from Avenue Venture Opportunities Fund, L.P.

On August 6, 2021, the Company entered into a Loan and Security Agreement (the “Avenue Loan Agreement”) with Avenue Venture Opportunities Fund, L.P. (the “Lender,” or “Avenue”) for a term loan in an aggregate principal amount of up to $20.0 million (the “Avenue Loan”). The Avenue Loan bears interest at an annual rate equal to the greater of (a) the sum of 7.70% plus the prime rate as reported in The Wall Street Journal and (b) 10.95%. The interest rate at December 31, 2023 was 16.2%. The Avenue Loan is secured by all of the Company’s assets globally, including intellectual property. The Avenue Loan matures on August 1, 2024.

F-18

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

The initial tranche of the Avenue Loan was $15.0 million, including $4.0 million that was funded into a restricted account. On March 15, 2023, the Company returned to Avenue $4.0 million held in the restricted cash to pay down a portion of the outstanding loan balance, principal payments of $2.1 million and an incremental 4.25% of the final payment of $0.2 million. On March 31, 2023, the Avenue Loan Agreement was amended (the “Avenue Amendment”) to defer the interest only period to September 30, 2023, with an additional extension option upon FDA Approval for the HEPZATO KIT and subsequent receipt of at least $10 million from the sale and issuance of equity securities. On August 14, 2023, the Company received FDA approval and has subsequently received over $10 million from the exercise of Tranche A Preferred Warrants. At the Company’s option, it has elected to extend the interest only period to December 31, 2023 and principal payments began in January 2024.

Up to $3.0 million of the principal amount of the Avenue Loan outstanding may be converted, at Avenue’s option, into shares of the Company’s common stock at a conversion price of $11.98 per share.

The Avenue Loan Agreement requires the Company to make and maintain representations and warranties and other agreements that are customary in loan agreements of this type. The Avenue Loan Agreement also contains customary events of default, including non-payment of principal or interest, violations of covenants, bankruptcy and material judgements.

In connection with the initial entry into the Avenue Loan Agreement, the Company issued warrants to Avenue (the “Initial Avenue Warrant”) to purchase 127,755 shares of common stock at an exercise price per share equal to $0.01. The Initial Avenue Warrant is exercisable until August 31, 2026. Additionally, in connection with the Avenue Amendment, the Company issued to Avenue a warrant to purchase 34,072 shares of common stock at an exercise price per share equal to $0.01.

The Company determined that the embedded conversion option associated with the Avenue Loan did not require bifurcation and met the criteria for equity classification. In addition, the amendment was recorded under debt modification guidance. Aggregate debt discount amortization of $0.8 million was recorded for the years ended December 31, 2023 and 2022. Interest expense incurred was $1.5 million and $1.9 million for the years ended December 31, 2023 and 2022, respectively.

Convertible Notes Payable

The Company has $2.0 million of principal outstanding related to Senior Secured Promissory Notes (the “Rosalind Notes”) which bear interest at 8% per annum. Pursuant to their original terms, the Rosalind Notes were convertible into Series E Preferred Stock at a price of $1,500 per share and were to mature on July 16, 2021.

On August 6, 2021, the Company executed an agreement to amend the Rosalind Notes to (i) reduce the conversion price to $1,198 per share of the Company’s Series E Convertible Preferred Stock; and (ii) extend the maturity date to October 30, 2024. In addition, the holders of the Rosalind Notes agreed to subordinate all of the Company’s indebtedness and obligations to Avenue and all of the holders’ security interest, to the Avenue Loan and Avenue’s security interest in the Company’s property.

Interest expense relating to the Rosalind Notes was $0.2 million for the years ended December 31, 2023 and 2022.

(12) Preferred Purchase Agreement

On March 27, 2023, the Company entered into a securities purchase agreement with certain accredited investors (the “Preferred Purchase Agreement”), pursuant to which on March 29, 2023, the Company issued and sold, in a private placement (the “Series F Preferred Offering”), (i) 24,900 shares of Series F-1 Convertible Preferred Stock, par value $0.01 per share (the “Series F-1 Preferred Stock”), (ii) tranche A warrants (the “Preferred Tranche A Warrants”) to acquire 34,859 shares of Series F-3 Convertible Preferred Stock, par value $0.01 per share (the “Series F-3 Preferred Stock”) and (iii) tranche B warrants (the “Preferred Tranche B Warrants”, together with the Preferred Tranche A Warrants, the “Preferred Warrants”) to acquire 24,900 shares of Series F-4 Convertible Preferred Stock, par value $0.01 per share (the “Series F-4 Preferred Stock”) for an aggregate offering price of $24.9 million before deducting

F-19

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

the fees paid to the placement agent and the financial advisors and other financing expenses payable by the Company.

The gross proceeds of $24.9 million from the Series F Preferred Offering have been allocated first to the Preferred Warrant liabilities at their fair value of $4.9 million, with the residual of $20.0 million being allocated to the Series F-1 Preferred Stock.

During the twelve months ended December 31, 2023, all of the Preferred Tranche A Warrants were exercised for an aggregate exercise price of $34.9 million into 34,859 shares of Series F-3 Preferred Stock and since then 23,839 shares of F-3 Preferred Stock were converted into 5,297,550 shares of common stock. The Preferred Tranche B Warrants are exercisable for 24,900 shares of Series F-4 Preferred Stock, with an aggregate exercise price of $24.9 million until the earlier of (i) 21 days following the Company’s announcement of receipt of at least $10 million in quarterly U.S. revenue from the commercialization of HEPZATO and (ii) March 31, 2026.

Following stockholder approval, pursuant to the Certificate of Designation of Preferences, Rights and Limitations of the Series F Convertible Voting Preferred Stock (the “Certificate of Designation”), each share of Series F-1 Preferred Stock automatically converted into shares of common stock and/or, if applicable (in accordance with the beneficial ownership limitations then in effect), shares of Series F-2 Preferred Stock, par value $0.01 per share (the “Series F-2 Preferred Stock” and, together with the Series F-1 Preferred Stock, the Series F-3 Preferred Stock and the Series F-4 Preferred Stock, the “Series F Preferred Stock”) in lieu of common stock. Subject to limitations set forth in the Certificate of Designation, the shares of Series F-2, F-3 and F-4 Preferred Stock are convertible into common stock at the option of the holder at the conversion price of $3.30 per share, $4.50 per share and $6.00 per share, respectively, rounded down to the nearest whole share, and in each case subject to the terms and limitations contained in the Certificate of Designation. During the twelve months ended December 31, 2023, 46,197 shares of the Company’s Series F-1, F-2 and F-3 Preferred Stock were converted into 12,073,145 shares of common stock. As of December 31, 2023, there were 2,542 shares of Series F-2 Preferred Stock, 11,020 shares of Series F-3 Preferred Stock and no shares of Series F-4 Preferred Stock outstanding.

The Series F-2, F-3 and F-4 Preferred Stock are not mandatorily redeemable, redeemable at the holder’s election or contingently redeemable at the holder’s election (at this point, a Deemed Liquidation Event would potentially trigger pro rata liquidation payments to the preferred and common stockholders on a pro rata “as converted” basis). Accordingly, the Series F-2, F-3 and F-4 Preferred are now classified as permanent equity.

The Company determined that the outstanding Preferred Warrants should be liability-classified. See Critical Accounting Estimates - Fair Value Measurements - Warrant Liability for a discussion of the accounting treatment of the Common Warrants and Preferred Warrants.

(13) Stockholders’ Equity

Public and Private Placements

Common Purchase Agreement

On March 27, 2023, the Company entered into a securities purchase agreement (the “Common Purchase Agreement”) with the Company’s Chief Executive Officer, Gerard Michel, pursuant to which the Company agreed to issue and sell, in a private placement (the “Common Offering”) shares of common stock, tranche A warrants (“Common Tranche A Warrants”) to acquire 31,110 shares of common stock, tranche B warrants (“Common Tranche B Warrants”, together with the Common Tranche A Warrants, the “Common Warrants”) to acquire 16,666 shares of common stock. On March 29, 2023, the Company closed the Common Offering.

The aggregate exercise price of the Common Tranche A Warrants issued pursuant to the Common Offering is approximately $0.1 million.

On August 14, 2023, the Company announced the receipt of the FDA Approval and all Common Tranche A Warrants were exercised and converted into 31,110 shares of common stock.

F-20

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

The aggregate exercise price of the Common Tranche B Warrants issued in the Common Offering is approximately $0.1 million. The Common Tranche B Warrants are exercisable for an aggregate of 16,666 shares of common stock until the earlier of 21 days following the Company’s announcement of receipt of recording at least $10 million in quarterly U.S. revenue from the commercialization of HEPZATO and March 31, 2026.

Registration Rights for Preferred and Common Offerings

Pursuant to the Preferred Purchase Agreement and the Common Purchase Agreement (collectively, the “Purchase Agreements”), the Company filed a registration statement on Form S-3 (the “Resale Registration Statement”) providing for the resale by the investors party thereto of the common stock issuable upon conversion of the Registrable Shares (as defined in the Purchase Agreements). The Resale Registration Statement became effective on June 28, 2023.

There is no established public trading market for the Series F Preferred Stock, the Preferred Warrants, or the Common Warrants and the Company does not intend to list such securities on any national securities exchange or nationally recognized trading system.

At-the-Market Offering

The Company has entered into a Controlled Equity OfferingSM Sales Agreement (“ATM Sales Agreement”), with Cantor Fitzgerald & Co. (the “Sales Agent”), pursuant to which the Company may offer and sell, at its sole discretion through the Sales Agent, shares of common stock having an aggregate offering price of up to $17.0 million. To date, the Company has sold approximately $4.0 million of its common stock, prior to issuance costs, under the ATM Sales Agreement. No sales were made during the year ended December 31, 2023.

Authorized Shares

In June 2023, stockholders approved an amendment to the Company’s Amended and Restated Certificate of Incorporation to increase the total number of shares of its common stock authorized for issuance from 40 million to 80 million shares. The company is authorized to issue 80 million shares of common stock, $0.01 par value, and 10 million shares of preferred stock, $0.01 par value. As of December 31, 2023, the Company has designated the following preferred stock:

Designated Preferred Shares December 31, 2023

Preferred Stock

As of December 31, 2023, there were an aggregate of 11,257 shares of Series E and Series E-1, 2,542 Series F-2 and 11,020 Series F-3 Convertible Preferred Stock outstanding, respectively.

F-21

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

Equity Incentive Plans

On September 30, 2020, the Company’s 2020 Omnibus Equity Incentive Plan (the “2020 Plan”) was adopted by the Company’s Board of Directors. On November 23, 2020, the Company’s stockholders approved the 2020 Plan. The 2020 Plan will continue in effect until the tenth anniversary of the date of its adoption by the Board or until earlier terminated by the Board. The 2020 Plan is administered by the Board of Directors or a committee designated by the Board of Directors. On June 12, 2023, the stockholders approved the amendment to the Company’s 2020 Plan to increase the number of shares of common stock available under the plan by 2.65 million shares. The 2020 Plan provides for the grant of incentive stock options, non-qualified stock options, stock appreciation rights, restricted stock awards, restricted stock unit awards, performance awards, as well as other stock-based awards or cash awards that are deemed to be consistent with the purposes of the plan to Company employees, directors and consultants. As of December 31, 2023, there are 5,123,742 shares of common stock reserved under the 2020 Plan for future issuance, of which 1,837,509 remained available to be granted.

In addition to options granted from the 2020 Plan, the Company also grants employment inducement awards pursuant to Listing Rule 5635(c)(4) of the corporate governance rules of the NASDAQ Stock Market. The inducement grants are intended to provide incentive to certain individuals to enter into employment with the Company. Prior to December 5, 2023, the inducement awards were granted outside of the 2020 Plan, however they are governed in all respects as if they were issued under the 2020 Plan. These grants do not reduce the number of options available for issuance under the 2020 Plan.

On December 5, 2023, the Company’s 2023 Inducement Plan (the “2023 Plan”) was adopted by the Company’s Board of Directors. The 2023 Plan is administered by a Compensation Committee of two or more Independent Directors appointed by the Board of Directors and is intended to provide for the grant of non-qualified stock options, stock appreciation rights, restricted stock awards, restricted stock unit awards, performance awards, as well as other stock-based awards or cash awards that are deemed appropriate to incentivize employment with the Company. Awards from the 2023 Plan can only be granted to individuals who have not previously worked for the Company or have not worked for the Company for a bona fide period of time. As of December 31, 2023, there are 650,000 shares of common stock reserved under the 2023 Plan, of which 623,000 remain available to be granted.

Stock Options

The following table sets forth information as of December 31, 2023 with respect to compensation plans (including individual compensation arrangements) under which shares of common stock of the Company are authorized for issuance.

F-22

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

(1)Includes (a) stock options for an aggregate of 499 shares of common stock issued under the Company’s 2019 Equity Incentive Plan, which allows for grants in the form of incentive stock options, non-qualified stock options, stock units, stock awards, stock appreciation rights, and other stock-based awards to the Company’s officers, directors, employees, consultants, and advisors, including options to purchase shares of common stock at exercise prices not less than 100% of fair value on the dates of grant. As of November 2, 2020, no additional grants may be made under this plan, which has been superseded by the Company’s 2020 Omnibus Equity Incentive Plan; however, outstanding awards granted under this plan will remain outstanding and continue to be administered in accordance with the terms of this plan and the applicable award agreements; (b) pursuant to an employment agreement dated as of August 31, 2020 between the Company and Gerard Michel, the Company’s Chief Executive Officer, on October 1, 2020, a non-qualified and non-plan stock option “inducement award” to purchase 498,000 shares of the Company’s common stock in reliance on Nasdaq Rule 5635(c)(4) pursuant to the terms of a stock option award agreement between the Company and Mr. Michel; and (c) new hire inducement awards to purchase 398,500 shares of the Company’s common stock in reliance on Nasdaq Rule 5635(c)(4) pursuant to the terms of a stock option award agreement between the Company and 12 employees hired during 2022 and 2023.

The following tables include information for all options granted, including inducement grants that are granted outside of the 2020 Plan.

The Company values stock options using the Black-Scholes option pricing model and used the following assumptions during the reporting periods:

Years Ended December 31

Expected terms (years) 0.8 - 5.9 0.7 - 8.4

Risk-free interest rate 3.9% - 5.4% 1.2% - 4.4%

The weighted average estimated fair value of the stock options granted during the years ended December 31, 2023 and 2022 was approximately $5.62 and $6.05 per share, respectively.

The following is a summary of stock option activity for the year ended December 31, 2023:

F-23

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

The following table summarizes information for stock option shares outstanding and exercisable at December 31, 2023:

Options Exercisable

The following is a summary of the share-based compensation expense in the statement of operations for the twelve months ended December 31, 2023:

Years Ended December 31,

Selling, general and administrative $ 4,944 $ 5,282

At December 31, 2023, there was approximately $5.9 million of aggregate unrecognized compensation expense related to employee, consultant and Non-employee Director stock option grants. The Company does not estimate forfeitures and only recognizes forfeitures as they occur. The cost is expected to be recognized over a weighted average period of 2.1 years.

Employee Stock Purchase Plan

In August 2021, the Company’s Board of Directors, with shareholder approval in May 2022, adopted the Employee Stock Purchase Plan (the “ESPP”). The ESPP provides for a maximum of 260,295 shares of common stock to be purchased by participating employees of which 41,435 have been issued as of December 31, 2023 since the inception of the benefit in 2021. Employees who elect to participate in the ESPP will be able to purchase common stock at the lower of 85% of the fair market value of common stock on the first or last day of the applicable six-month offering period. In January 2024, an aggregate 21,140 shares were purchased by participating employees for the offering period of July 3, 2023 to December 29, 2023.

F-24

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

Common Stock Warrants

The following is a summary of common stock warrant activity for the year ended December 31, 2023:

Warrants Weighted AverageExercise Price Weighted AverageRemaining Life(in years)

The following table presents information related to stock warrants at December 31, 2023:

Warrants Exercisable

Preferred Stock Warrants

The following is a summary of preferred stock warrant activity for the year ended December 31, 2023:

Warrants Weighted AverageExercise Price Weighted AverageRemaining Life(in years)

Outstanding at January 1, 2023 — $ —

(14) Net Loss Per Share

Basic net loss per share is determined by dividing net loss by the weighted average shares of common stock outstanding during the period, without consideration of potentially dilutive securities, except for those shares that are issuable for little or no cash consideration. Diluted net loss per share is determined by dividing net loss by diluted weighted average shares outstanding. Diluted weighted average shares reflects the dilutive effect, if any, of potentially dilutive common shares, such as stock options, stock purchased pursuant to the Company’s employee stock purchase plan, convertible notes and warrants calculated using the treasury stock method. In periods with

F-25

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

reported net operating losses, all common stock options and warrants are generally deemed anti-dilutive such that basic net loss per share and diluted net loss per share are equal.

For the years ended December 31, 2023 and 2022 the following potentially dilutive securities were excluded from the computation of diluted earnings per share because their effects would be antidilutive:

December 31,

Assumed conversion of preferred stock warrants 4,149,994 —

At December 31, 2023, the Company had 1,037,792 pre-funded warrants outstanding. The following tables provides a reconciliation of the weighted average shares outstanding calculation for the year-ended December 31, 2023 and 2022.

Year ended December 31,

(15) Commitments and Contingencies

Litigation, Claims and Assessments

medac Matter

In April 2021, the Company’s wholly-owned subsidiary, Delcath Systems Ltd, issued to medac GmbH, a privately held, multi-national pharmaceutical company based in Germany (“medac”), an invoice for a €1 million milestone payment under a License, Supply and Marketing Agreement dated December 10, 2018 (the “medac Agreement”) between medac and the Company. The medac Agreement provided to medac the exclusive right to market and sell CHEMOSAT in certain designated countries for which the Company was entitled to a combination of upfront and success-based milestone payments as well as a fixed transfer price per unit of CHEMOSAT and specified royalties.

In response to medac’s subsequent dispute and non-payment of the invoice, on October 12, 2021, the Company notified medac in writing that it was terminating the medac Agreement due to medac’s nonpayment of the €1 million milestone payment, with the effective date of termination of the medac Agreement being April 12, 2022. On December 16, 2021, the Company initiated an arbitration proceeding pursuant to the dispute resolution procedures of the medac Agreement for the non-payment of the invoice.

On December 30, 2022, the parties reached a final settlement of the matter and the Company agreed to pay medac either (a) royalty on sales of CHEMOSAT units over a defined minimum for a period of five years or until a maximum payment has been reached, or (b) a minimum annual payment of $0.2 million in the event the annual royalty payment does not reach the agreed minimum payment amount. As of December 31, 2023, the Company has estimated the settlement to be $1.0 million and recorded $0.8 million as other liabilities, non-current and $0.2 million as accrued expenses on the Company’s condensed consolidated balance sheet.

F-26

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

Lachman Consulting Services, Inc

On January 24, 2023, Lachman Consultant Services, Inc. (“Lachman”) served the Company with a complaint alleging that Delcath owed Lachman approximately $0.9 million in unpaid consulting fees plus interest, costs and attorneys’ fees. The dispute arises from a July 22, 2021 agreement between Lachman and Delcath under which Lachman provided assistance to the Company in regard to preparing for a FDA inspection and good manufacturing practices, training and support. A settlement was reached on July 5, 2023, under which the Company paid Lachman $0.9 million.

Manufacturing and Supply Agreements

The Company has a License, Supply and Contract Manufacturing Agreement (the “Supply Agreement”) for the supply of melphalan provided in the HEPZATO KIT. The Supply Agreement is effective until April 30, 2024, with an option to extend its term for three additional years. The Supply Agreement does not consist of minimum purchase units per year but does require each order to contain a minimum number of vials. As of December 31, 2023, the Company has committed to purchase $2.25 million of melphalan under this Supply Agreement in 2024.

(16) Subsequent Events

Leases

On January 18, 2024 (the “Lease Commencement Date”), the Company entered into a lease agreement (the “Queensbury Lease”) to lease approximately 18,000 square feet of manufacturing and office space in Queensbury, New York (the “Premises”). The initial term of the lease is 5 years with a right to extend the lease by an additional 5 years, exercisable under certain conditions set forth in the Queensbury Lease. The initial term is expected to begin within 90 days of the Lease Commencement Date.

The annual base rent of the Queensbury Lease is initially $8 per square foot per year, subject to annual 3% increases in years four and five. Additionally, the Company is responsible for reimbursing the landlord for the Company’s share of the Premises’ property taxes.

Securities Purchase Agreement

On March 14, 2024, the Company and certain accredited investors (each an “Investor” and collectively, the “Investors”) entered into a securities purchase agreement (the “Securities Purchase Agreement”) pursuant to which the Company agreed to sell and issue to the Investors in a private placement (the “Private Placement”) (i) an aggregate of 876,627 shares (the “Shares”) of the Company’s common stock, par value $0.01 per share (the “Common Stock”), at a purchase price of $3.72 per share, and (ii) to certain investors, in lieu of shares of Common Stock, 1,008,102 pre-funded warrants (the “Pre-Funded Warrants”) at a price per Pre-Funded Warrant of $3.71 (the “Warrant Shares” and together with the Shares, the “Securities”). The Pre-Funded Warrants will have an exercise price of $0.01 per share of Common Stock, be immediately exercisable and remain exercisable until exercised in full.

The Private Placement closed on March 19, 2024. The Company received gross proceeds from the Private Placement of approximately $7.0 million, before deducting offering expenses payable by the Company. The Company intends to use the net proceeds of the Private Placement for working capital and other general corporate purposes.

F-27

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

(17) Income Taxes

There is no income tax provision for the years ended December 31, 2023 and 2022, respectively.

Loss before income taxes consists of:

For the Year Ended December 31,

The provision for income taxes differs from the amount computed by applying the statutory rate as follows:

For the Year Ended December 31,

Income taxes using U.S federal statutory rate $ (10,012) $ (7,666)

State income taxes, net of federal benefit (31) (531)

Foreign rate differential 506 165

Stock option expense, exercises and cancellations 2,899 752

Research and development costs (859) (708)

Derivative Charge 1,680 —

$ — $ —

Significant components of the Company’s deferred tax assets are as follows:

For the Year Ended December 31,

Deferred tax assets:

Employee compensation accruals $ 1,377 $ 2,772

Accrued liabilities 54 197

Lease obligation 4 38

Research expense capitalization 5,441 3,203

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

For the Year Ended December 31,

Deferred tax liabilities:

Right of use asset $ 13 $ 50

Total deferred tax liabilities 13 50

Net deferred tax assets $ — $ —

As of December 31, 2023, and 2022, the Company had net operating loss carryforwards for U.S. federal income tax purposes of approximately $307.6 million and $290.4 million, respectively. A significant portion of the federal amount is subject to an annual limitation as low as $28 as a result of changes in the Company’s ownership in May 2003, November 2016, and multiple dates throughout 2017, 2018, 2019, 2021 and 2023, as defined by Section 382 of the United States Internal Revenue Code of 1986, as amended (the “IRC”), and the related income tax regulations. As a result of the limitations caused by the multiple ownership changes, approximately $200.5 million of the total net operating loss carryforwards is expected to expire unutilized and will be unavailable to offset future federal taxable income. Approximately $107.1 million of net operating loss carryforwards remains available to offset future federal taxable income, of which $1.7 million will expire between 2024 and 2037 and $105.4 million will have an unlimited carryforward period.

In addition, the Company’s state net operating losses are also subject to annual limitations that generally follow the IRC Section 382 provisions (with the exception of Connecticut and Florida), adjusted for each state’s respective income apportionment percentages. As of December 31, 2023, and 2022, the Company had net operating loss carryforwards for states and city income tax purposes between approximately $0.8 million and $196.0 million and between approximately $0.3 million and $195.3 million, respectively, which expire through 2043. As a result of the Section 382 limitations, approximately $191.1 million and $175.4 million of New York State and New York City net operating losses are expected to expire unutilized and will be unavailable to offset future taxable income. Approximately $5.0 million and $4.9 million of net operating loss carryforwards, respectively, will be available to offset future state and city taxable income. As of December 31, 2023 and 2022, the Company had a net operating loss carryforward for foreign income tax purposes of $43.3 million and $33.4 million, respectively, which have indefinite carryforward periods. As of December 31, 2023 and 2022, the Company had federal research and development tax credit carryforwards of approximately $7.4 million and $6.5 million, respectively, which expire through 2043. As a result of the Section 382 limitations, all but $2.3 million of the tax credit carryforwards is expected to expire unutilized.

Management has established a 100% valuation allowance against the deferred tax assets as management does not believe it is more likely than not that these assets will be realized. The Company’s valuation allowance increased by approximately $7.0 million and $9.2 million in 2023 and 2022, respectively. The change in valuation allowance is as follows:

December 31,

Charged to costs and expenses 7,099 9,221

Charged to other comprehensive income (142) (2)

Table of Contents

DELCATH SYSTEMS, INC.

Notes to Consolidated Financial Statements

for the Years Ended December 31, 2023 and 2022

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

The Company complies with the provisions of ASC 740-10 in accounting for its uncertain tax positions. ASC 740-10 addresses the determination of whether tax benefits claimed or expected to be claimed on a tax return should be recorded in the financial statements. Under ASC 740-10, the Company may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The Company has determined that the Company has no significant uncertain tax positions requiring recognition under ASC 740-10 and therefore has not included a tabular roll forward of unrecognized tax benefits. As there are no uncertain tax positions recognized, interest and penalties have not been accrued.

The Company is subject to income tax in the United States, as well as various state and international jurisdictions. The Company has not been audited by any state tax authorities in connection with income taxes. The Company has not been audited by international tax authorities or any states in connection with income taxes. The Company’s New York State tax returns have been subject to annual desk reviews which have resulted in insignificant adjustments to the related franchise tax liabilities and credits. The Company is no longer subject to federal and state examination for tax years ending prior to December 31, 2020; tax years ending December 31, 2020 through December 31, 2023 remain open to examination. The Republic of Ireland is the Company’s only significant foreign jurisdiction. The Company is no longer subject to Ireland tax examination for tax years ending prior to December 31, 2018 (as Ireland has not initiated an audit of 2017 as of December 31, 2023); tax years ending December 31, 2019 through December 31, 2023 remain open to examination. However, the Company’s tax years December 31, 1998 through December 31, 2023 generally remain open to adjustment for all federal, state and foreign tax matters until its net operating loss and tax credit carryforwards are utilized or expire prior to utilization, and the applicable statutes of limitation have expired in the utilization year. The federal and state tax authorities can generally reduce a net operating loss (but not create taxable income) for a period outside the statute of limitations in order to determine the correct amount of net operating loss which may be allowed as a deduction against income for a period within the statute of limitations.

The Company recognizes interest accrued related to unrecognized tax benefits and penalties, if incurred, as a component of income tax expense.

The Company’s foreign subsidiaries have generally incurred losses since inception and the Company has no material undistributed earnings as of December 31, 2023.

Source: SEC EDGAR (public domain) · 10-K for the period ended 2023-12-31, filed 2024-03-26 · accession 0001628280-24-013008

Filing HTML rendered to line-structured narrative text by the shipped reducer (datafeeds.edgar_fulltext.visible_text, keep_table_headers=True): scripts and inline-XBRL headers are dropped, and table content is reduced to its short label cells — numeric table data is not rendered and is therefore not counted. The same rendering is used for every year, so a year-over-year comparison is like for like.

The text is our rendering of the filing, not a facsimile: original pagination, typography and tables are not reproduced, and the numbers live in the financial statements (FA).

The outline locates item HEADINGS in this document. Only Items 1A and 7 have certified boundaries elsewhere in the terminal (the redline and the narrative-overlap number); every span here runs from one heading found to the next heading found.

How the outline was chosen. It is the longest chain of item headings that runs forward through both the document and the standard item order: 23 headings are on that chain and 17 further heading-shaped lines are not — the table-of-contents echo of every item, cross-references and exhibit-list mentions. Each entry's length is measured from its heading to the next heading on the chain.