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QUEENSBURY, N.Y., May 14, 2024 — Delcath Systems, Inc. (Nasdaq: DCTH) (“Delcath” or the “Company”), an interventional oncology company focused on the treatment of primary and metastatic cancers of the liver, today reported financial results and business highlights for the first quarter ended March 31, 2024.

Recent Business Highlights
During and since the first quarter, Delcath:

• Recognized over $2.0 million of revenue from sales of HEPZATO KIT (melphalan/Hepatic Delivery System) and $1.1 million in CHEMOSAT sales through March 31, 2024;
• Updated U.S. center activation guidance from 15 active centers to a total of 20 active centers by the end of 2024;
• Activated four treating centers during the first quarter with an additional two centers in April. A further five centers are accepting patient referrals in anticipation of activation;
• Raised $7.0 million in a private placement transaction with certain accredited investors comprised of existing investors, Delcath senior executives, and members of its Board of Directors;
• Appointed Martha S. Rook, Ph.D, an experienced industry leader with more than 25 years of academic and industry experience, as Chief Operating Officer;
• Received a permanent, product-specific J-code (J9248) and transitional pass-through payment status for HEPZATO KIT from the Centers for Medicare & Medicaid Services (CMS) which became effective on April 1, 2024;
• Executed an amendment with Synerx Pharma, LLC and Mylan Teoranta for Delcath’s supply of melphalan hydrochloride which extends the term of the original agreement to December 31, 2028; and
• Announced the publication of results from the pivotal Phase 3 FOCUS study of HEPZATO KIT in patients with unresectable metastatic Uveal Melanoma on May 4, 2024, in the journal Annals of Surgical Oncology.

“We continue to make steady progress in the training and activation of new treatment centers which is a testament to both the emerging role of HEPZATO in the treatment of patients with metastatic uveal melanoma and the capability and dedication of our field force,” said Gerard Michel, Delcath’s Chief Executive Officer. “We are committed to expanding the availability of HEPZATO to patients in need and I am confident that we will reach our goal of 20 treating centers by the end of 2024.”

First Quarter 2024 Results
Cash, cash equivalents and investment totaled $27.2 million as of March 31, 2024, which includes a $7.0 million private placement financing which closed on March 19, 2024.

Total revenue for the quarter ended March 31, 2024 was $3.1 million compared to $0.6 million for the same period in the prior year from our sales of HEPZATO in the U.S. and CHEMOSAT in Europe.

Research and development expenses for the quarter ended March 31, 2024, were $3.7 million compared to $4.6 million for the same period in the prior year. The change in research and development expenses is primarily due to a decrease in clinical trial activities and expenses related to the FDA inspection offset by an increase in personnel related expenses.

Selling, general and administrative expenses for the quarter ended March 31, 2024, were $8.8 million compared to $4.2 million for the same period in the prior year. The increase primarily relates to commercial launch activities including marketing-related expenses and additional personnel in the commercial team.

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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 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.

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 Hepatic Delivery System (HDS). The HDS is used to surgically isolate the liver 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, 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; 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:
Westwicke Partners
investorrelations@delcath.com

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SOURCE Delcath Systems, Inc.