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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
_____________________
FORM 8-K
_____________________
CURRENT REPORT
Pursuant to Section 13 or 15(d)
of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 4, 2025
_____________________

DELCATH SYSTEMS, INC.
(Exact Name of Registrant as Specified in its Charter)
_____________________
Delaware 001-16133 06-1245881
(State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.)
566 Queensbury Avenue
Queensbury, NY 12804
(Address of principal executive offices) (Zip Code)
(518) 743-8892
(Registrant’s telephone number, including area code)
Not Applicable
(Former name or former address, if changed since last report)
_____________________

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:
Title of each class
Trading
Name of each exchange
symbol(s)
on which registered
Common Stock, $.01 par value
DCTH
The Nasdaq Capital Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐




Item 2.02    
Results of Operations and Financial Condition.

On November 4, 2025, Delcath Systems, Inc. (“Delcath”) issued a press release announcing financial results and business highlights for the quarter ended September 30, 2025 (the “Press Release”). A copy of the press release is furnished pursuant to Item 2.02 as Exhibit 99.1 hereto and is incorporated herein by reference.

The information contained in this Current Report on Form 8-K, including the Press Release, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the Press Release shall not be incorporated by reference into any filing with the U.S. Securities and Exchange Commission by Delcath whether made before or after the date hereof, regardless of any general incorporation language in such filing.

Item 9.01    
Financial Statements and Exhibits.

(d) Exhibits
Exhibit No. Description
99.1
104 Cover Page Interactive Data File (embedded within the Inline XBRL document)








SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
DELCATH SYSTEMS, INC.
Date: November 4, 2025
By:
/s/ Sandra Pennell
Name: Sandra Pennell
Title: Chief Financial Officer

EX-99.1 2 dcth-q325erex991.htm EX-99.1 Document
Exhibit 99.1

Delcath Systems Reports Third Quarter 2025
Results and Business Highlights

Conference Call Today at 8:30 a.m. Eastern Time

QUEENSBURY, NY – November 4, 2025, Delcath Systems, Inc. (Nasdaq: DCTH) (“Delcath” or the “Company”), an interventional oncology company focused on the treatment of primary and metastatic liver cancers, today announced financial results and business highlights for the third quarter ended September 30, 2025.

Third Quarter 2025 Financial Results
•Total revenue of $20.6 million, compared with $11.2 million in the third quarter of 2024
◦HEPZATO KIT™ revenue of $19.3 million, compared to $10.0 million in the third quarter of 2024
◦CHEMOSAT® revenue of $1.3 million, compared to $1.2 million in the third quarter of 2024
•Gross margins of 87%, compared to 85% in the third quarter of 2024
•Net income of $0.8 million, compared to a net income of $1.9 million in the third quarter of 2024
•Non-GAAP positive adjusted EBITDA in the third quarter of $5.3 million, compared to a positive adjusted EBITDA of $1.0 million in the third quarter of 2024
•Cash provided by operations of $4.8 million in the quarter; compared to $3.6 million used by operations in the third quarter of 2024
•Cash and investments of $88.9 million as of September 30, 2025

Business Highlights
•There are currently 25 active centers across the U.S.
•In August, the first patient was dosed at City of Hope National Medical Center in the global Phase 2 trial of HEPZATO in combination with trifluridine-tipiracil and bevacizumab for liver-dominant metastatic colorectal cancer. The study will enroll approximately 90 patients across 20+ sites in the U.S. and Europe, with topline data expected in 2028
•Announced that results from the investigator-initiated Phase 2 CHOPIN trial at Leiden University Medical Center evaluating CHEMOSAT with ipilimumab and nivolumab in metastatic uveal melanoma were presented at the October 2025 European Society of Medical Oncology Annual Congress by Principal Investigator Ellen Kapiteijn, MD, showing a significant improvement in one-year progression-free survival versus CHEMOSAT alone

“In the third quarter, we made strong progress with our clinical programs, reporting compelling positive CHOPIN results and first-patient dosing in our global Phase 2 trial in liver-dominant metastatic colorectal cancer,” said Gerard Michel, Chief Executive Officer of Delcath Systems. “While revenue results in the quarter reflected the impact of NDRA discounts and seasonal factors, our fundamentals remain strong. We are confident that the growing clinical validation of HEPZATO positions us well to drive continued progress and long-term value for patients and shareholders.”

2025 Full Year Financial Guidance
The Company’s financial outlook for fiscal year 2025:
•Total CHEMOSAT and HEPZATO KIT revenue to be in the range of $83 to $85 million, an increase in volume of approximately 150% over 2024
•Gross margins in the range of 85% to 87%
•Positive adjusted EBITDA and cashflow in each quarter of 2025




1

Exhibit 99.1
Third Quarter 2025 Results
Total revenue for the quarter ending September 30, 2025 was $20.6 million compared to $11.2 million for the same period in the prior year. Revenue in the quarter includes sales of $19.3 million of HEPZATO in the U.S. and $1.3 million of CHEMOSAT in Europe.
Research and development expenses for the quarter ending September 30, 2025, were $8.0 million compared to $3.9 million for the same period in the prior year. The increase is primarily due to costs associated with expanding the clinical team including the share-based compensation expense related to an increase in headcount and initiation of the Phase 2 clinical trial evaluating HEPZATO in combination with standard of care for metastatic colorectal cancer and Phase 2 clinical trial in metastatic breast cancer. In 2024, these costs primarily related to medical affairs and regulatory costs associated with the approved products.

Selling, general and administrative expenses for the quarter ended September 30, 2025, were $10.3 million compared to $7.0 million for the same period in the prior year. The increase is primarily due to continued commercial expansion activities including marketing-related expenses, additional personnel in the commercial team and share-based compensation expenses.
Net income for the quarter ended September 30, 2025 was $0.8 million compared to net income of $1.9 million for the same period in the prior year.
Non-GAAP adjusted EBITDA for the quarter ended September 30, 2025 was $5.3 million compared to adjusted EBITDA of $1.0 million for the same period in the prior year. A table reconciling non-GAAP measures is included in this press release for reference.
As of September 30, 2025, the Company had $88.9 million in cash and investments, and no debt.

Conference Call Information
To participate in this event, dial in approximately 5 to 10 minutes before the beginning of the call.

Event Date: Thursday, November 6, 2025
Time: 8:30 AM Eastern Time

Participant Numbers:
Toll Free: 1-877-407-3982
International: 1-201-493-6780
Webcast: https://viavid.webcasts.com/starthere.jsp?ei=1735083&tp_key=a3bb91787b

A replay of the webinar will be available shortly after the conclusion of the call and will be archived on the company's website https://investors.delcath.com/news-events/events-and-presentations.

GAAP v. Non-GAAP Measures
Delcath’s reported earnings are prepared in accordance with generally accepted accounting principles in the United States, or GAAP, and represent earnings as reported to the Securities and Exchange Commission. Delcath has provided in this release certain financial information that has not been prepared in accordance with GAAP. Delcath’s management believes that the non-GAAP adjusted EBITDA described in this release, which includes adjustments for specific items that are generally not indicative of our core operations, provides additional information that is useful to investors in understanding Delcath’s underlying performance, business and performance trends, and helps facilitate period-to-period comparisons and comparisons of its financial measures with other companies in Delcath’s industry. However, the non-GAAP financial measures that Delcath uses may differ from measures that other companies may use. Non-GAAP financial measures are not required to be uniformly applied, are not audited and should not be considered in isolation or as substitutes for results prepared in accordance with GAAP.

About Delcath Systems, Inc., HEPZATO KIT and CHEMOSAT
Delcath Systems, Inc. is an interventional oncology company focused on the treatment of primary and metastatic liver cancers. The company's proprietary products, HEPZATO KIT™ (HEPZATO (melphalan) for Injection/ Hepatic Delivery System) and CHEMOSAT® Hepatic Delivery System (HDS) for Melphalan percutaneous hepatic perfusion (PHP), are designed to administer high-dose chemotherapy to the liver while controlling systemic exposure and associated side effects during a PHP procedure.
2

Exhibit 99.1

In the United States, HEPZATO KIT is considered a combination drug and device product and is regulated and approved for sale as a drug by the FDA. HEPZATO KIT is comprised of the chemotherapeutic drug melphalan and Delcath’s proprietary HDS. The HDS is used to isolate the hepatic venous blood from the systemic circulation while simultaneously filtrating hepatic venous blood during melphalan infusion and washout. The use of the HDS results in loco-regional delivery of a relatively high melphalan dose, which can potentially induce a clinically meaningful tumor response with minimal hepatotoxicity and reduce systemic exposure. HEPZATO KIT is approved in the United States as a liver-directed treatment for adult patients with metastatic uveal melanoma (mUM) 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. Please see the full Prescribing Information, including BOXED WARNING for the HEPZATO KIT.

In Europe, the device-only configuration of the HDS is regulated as a Class III medical device and is approved for sale under the trade name CHEMOSAT Hepatic Delivery System for Melphalan, or CHEMOSAT, where it has been used in the conduct of percutaneous hepatic perfusion procedures at major medical centers to treat a wide range of cancers of the liver.

Safe Harbor / Forward-Looking Statements
The Private Securities Litigation Reform Act of 1995 provides a safe harbor for forward-looking statements made by the Company or on its behalf. This press release contains forward-looking statements, including the Company’s statements regarding the possible synergy seen in the successful Phase 2 CHOPIN Trial being transferable to clinical practice; Company’s 2025 financial outlook, which are subject to certain risks and uncertainties, that can cause actual results to differ materially from those described. The words “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “potential,” “predict,” “project,” “should,” “target,” “will,” “would” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Factors that may cause such differences include, but are not limited to, uncertainties relating to: the Company’s commercialization plans and its ability to successfully commercialize the HEPZATO KIT; contributions to adjusted EBITDA; the Company’s successful management of the HEPZATO KIT supply chain, including securing adequate supply of critical components necessary to manufacture and assemble the HEPZATO KIT; successful FDA inspections of the facilities of the Company and those of its third-party suppliers/manufacturers; the Company’s successful implementation and management of the HEPZATO KIT Risk Evaluation and Mitigation Strategy; the potential benefits of the HEPZATO KIT as a treatment for patients with primary and metastatic disease in the liver; the Company’s ability to obtain reimbursement for the HEPZATO KIT; and the Company’s ability to successfully enter into any necessary purchase and sale agreements with users of the HEPZATO KIT. For additional information about these factors, and others that may impact the Company, please see the Company’s filings with the Securities and Exchange Commission, including those on Forms 10-K, 10-Q, and 8-K. However, new risk factors and uncertainties may emerge from time to time, and it is not possible to predict all risk factors and uncertainties. Accordingly, you should not place undue reliance on these forward-looking statements, which speak only as of the date they are made. We undertake no obligation to publicly update or revise these forward-looking statements to reflect events or circumstances after the date they are made.

Investor Relations Contact:
ICR Healthcare
investorrelations@delcath.com
3

Exhibit 99.1

DELCATH SYSTEMS, INC.
Condensed Consolidated Balance Sheets
(Unaudited)
(in thousands, except share and per share data)
September 30,
2025
December 31,
2024
Assets
Current assets
Cash and cash equivalents $ 41,813  $ 32,412 
Short-term investments 47,099  20,821 
Accounts receivable 13,751  10,890 
Inventories 10,745  6,933 
Prepaid expenses and other current assets 7,207  2,704 
Total current assets 120,615  73,760 
Property, plant and equipment, net 2,715  1,790 
Right-of-use assets 965  1,039 
Total assets $ 124,295  $ 76,589 
Liabilities and Stockholders’ Equity
Current liabilities
Accounts payable $ 2,133  $ 961 
Accrued expenses 5,768  5,078 
Lease liabilities, current 110  105 
Total current liabilities 8,011  6,144 
Lease liabilities, non-current 855  933 
Other liabilities, non-current 582  766 
Total liabilities $ 9,448  $ 7,843 
Commitments and contingencies
Stockholders’ equity
Preferred stock, $0.01 par value; 10,000,000 shares authorized; 14,192 and 14,192 shares issued and outstanding at September 30, 2025 and December 31, 2024, respectively
—  — 
Common stock, $0.01 par value; 80,000,000 shares authorized; 35,308,939 shares and 33,061,002 shares issued and outstanding at September 30, 2025 and December 31, 2024, respectively
353  331 
Additional paid-in capital 640,571  599,881 
Accumulated deficit (526,952) (531,548)
Accumulated other comprehensive income 875  82 
Total stockholders’ equity 114,847  68,746 
Total liabilities and stockholders’ equity $ 124,295  $ 76,589 

4

Exhibit 99.1
DELCATH SYSTEMS, INC.
Condensed Consolidated Statements of Operations and Comprehensive Loss
(Unaudited)
(in thousands, except share and per share data)

Three months ended September 30, Nine months ended September 30,
2025 2024 2025 2024
Product revenue $ 20,563  $ 11,200  $ 64,503  $ 22,105 
Cost of goods sold (2,624) (1,640) (8,787) (4,062)
Gross profit 17,939  9,560  55,716 18,043
Operating expenses:
Research and development expenses 7,986  3,866  19,875 10,960
Selling, general and administrative expenses 10,341  6,953  32,997 22,532
Total operating expenses 18,327  10,819  52,872 33,492
Operating income (loss) (388) (1,259) 2,844  (15,449)
Change in fair value of warrant liability —  2,975  —  (7,392)
Interest income (expense), net 796  113  2,063  (170)
Other income (expense) (33) 35  (63) $ 23 
Income (loss) before income taxes 375  1,864  4,844  (22,988)
Income tax (benefit) expense (455) —  248  — 
Net income (loss) 830  1,864  4,596  (22,988)
Other comprehensive income (loss):
Unrealized gain on investments adjustments 296  (14) 592  (147)
Foreign currency translation adjustments (13) 17  201  23 
Total comprehensive income (loss) $ 1,113  $ 1,867  $ 5,389  $ (23,112)
Common share data:
Basic income (loss) per common share $ 0.02  $ 0.06  $ 0.13  $ (0.84)
Weighted average number of basic shares outstanding 36,383,277 28,738,307 35,610,619 27,335,212
Diluted income (loss) per common share $ 0.02  $ 0.06  $ 0.12  $ (0.84)
Weighted average number of dilutive shares outstanding 40,056,814 32,345,672 39,949,941 27,335,212
DELCATH SYSTEMS, INC.
Reconciliation of Reported Net Income (Loss) (GAAP) to Adjusted EBITDA (NON-GAAP Measure)
(Unaudited)
(in thousands)
Three months ended September 30, Six months ended September 30,
2025 2024 2025 2024
Net income (loss) $ 830  $ 1,864  $ 4,596  $ (22,988)
Stock-based compensation expense 5,648  2,141  19,720  8,155 
Depreciation 64  34  158  96 
Net interest (income) expense (796) (113) (2,063) 170 
Fair value warrant adjustment —  (2,975) —  7,392 
Income tax expense (455) —  —  248  — 
Adjusted EBITDA (Non-GAAP) $ 5,291  $ 951  $ 22,659  $ (7,175)
5