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Y-mAbs Reports Second Quarter 2025 Financial Results and Recent Corporate Developments

• Reported Total Revenues of $19.5 million for the second quarter of 2025, exceeding the high end of the Company鈥檚 guidance range of between $17 million and $19 million
• SERB Pharmaceuticals to acquire Y-mAbs in $412.0 million transaction; transaction expected to close by the fourth quarter of 2025, subject to completion of tender offer and other customary conditions
• As of June 30, 2025, cash and cash equivalents were $62.3 million
• In light of the pending transaction, Y-mAbs will not be holding a webcast and conference call to discuss its second quarter 2025 results

PRINCETON, N.J., Aug. 08, 2025 (GLOBE NEWSWIRE) -- Y-mAbs Therapeutics, Inc. (the 鈥淐ompany鈥� or 鈥淵-mAbs鈥�) (Nasdaq: YMAB), a commercial-stage biopharmaceutical company focused on the development and commercialization of novel radioimmunotherapy and antibody-based therapeutic products for the treatment of cancer, today reported financial results for the second quarter ended June 30, 2025.

Recent Transaction Announcement with SERB

• On August 5, 2025, Y-mAbs announced it has entered into a definitive agreement with affiliated entities of SERB Pharmaceuticals (鈥淪ERB鈥�), under which SERB, a global specialty pharmaceutical company, agreed to acquire Y-mAbs in a transaction at an equity value of $412.0 million. The transaction was unanimously approved by the Y-mAbs Board of Directors. Under the terms of the merger agreement, SERB is obligated to commence a tender offer by August 19, 2025 to purchase all outstanding shares of Y-mAbs for $8.60 per share in cash, representing a 105% premium to Y-mAbs鈥� closing share price on August 4, 2025, the last full trading day prior to the transaction announcement.
• The transaction is expected to close by the fourth quarter of 2025, assuming a majority of outstanding Y-mAbs shares are tendered into, and not withdrawn from, the tender offer, and subject to the satisfaction of customary conditions, including the receipt of a majority of Y-mAbs shares in the tender offer and expiration or termination of the applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act.
  
  

Financial Results

Revenues

Total revenues for the quarter ended June 30, 2025 were $19.5 million, which was a 14% decrease from the $22.8 million of total revenues for the quarter ended June 30, 2024, driven by a $2.9 million decrease in Ex-U.S. DANYELZA庐 net product revenues and a $0.9 million decrease in U.S. DANYELZA net product revenues, partially offset by a $0.5 million increase related to license revenue recognized in the three months ended June 30, 2025. Total DANYELZA net product revenues for the quarter ended June 30, 2025 were $19.0 million, which was a 17% decrease over $22.8 million total DANYELZA net product revenues for the quarter ended June 30, 2024.

Total revenues for the six months ended June 30, 2025 were $40.4 million, which was a 5% decrease from the $42.7 million of total revenues for the six months ended June 30, 2024, driven by a $6.1 million decrease in U.S DANYELZA net product revenues, partially offset by a $3.8 million increase in Ex-U.S. DANYELZA net product revenues. The total revenues in the six months ended June 30, 2025 and 2024 include $0.5 million license revenue, respectively.

The Company鈥檚 U.S. DANYELZA net product revenues for the quarter ended June 30, 2025 were $14.3 million, representing a decrease of 6% from the same period in 2024. The decline in the U.S. DANYELZA net product revenues was driven by declining patient volume due to enrollments in clinical studies and competition in the three months ended June 30, 2025.

The Company鈥檚 Ex-U.S. DANYELZA net product revenues for the quarter ended June 30, 2025 were $4.7 million, representing a decrease of $2.9 million from the same period in 2024. Ex-U.S. DANYELZA net product revenues include $2.1 million from Western Europe and $3.4 million from Eastern Asia for the three months ended June 30, 2024, which was a result of stocking orders from Western Europe and Eastern Asia in 2024. The Company did not have any stocking orders from Western Europe or Eastern Asia in the three months ended June 30, 2025. The decrease in Ex-U.S. DANYELZA net product revenues was partially offset by a $2.0 million increase in DANYELZA net product revenues in Western Asia, where a named patient program launched in Turkey in late 2024.

During the three and six months ended June 30, 2025, the Company recognized $0.5 million license revenue, which was earned in prior periods, in connection with sales-based milestone achievements by our partner in Israel. There was no license revenue in the three months ended June 30, 2024. During the six months ended June 30, 2024, the Company had license revenues of $0.5 million, which included license revenue from the Latin America distribution partner, Adium, related to price approval for DANYELZA in Brazil from the Brazilian Medicines Market Regulation Chamber.

Cost of Goods Sold

Cost of goods sold was $2.7 million and $3.0 million for the three months ended June 30, 2025 and 2024, respectively. The decrease in cost of goods sold in the three months ended June 30, 2025 compared to the same period in 2024 was primarily driven by decreased sales.

Cost of goods sold was $5.7 million and $5.1 million for the six months ended June 30, 2025 and 2024, respectively. The increase in cost of goods sold in the six months ended June 30, 2025 compared to the same period in 2024 was primarily driven by increased cost of production.

Gross Profit

Gross profit stayed consistent at $16.8 million and $19.8 million for the three months ended June 30, 2025 and 2024, respectively. Gross margins were relatively flat at 86% and 87% for the three months ended June 30, 2025 and 2024, respectively.

Gross profit was $34.8 million and $37.6 million for the six months ended June 30, 2025 and 2024, respectively. Gross margins were 86% and 88% for the six months ended June 30, 2025 and 2024, respectively. The gross margin decreased primarily due to increased cost of production and lower product sales to Western Europe, where product sales generally have higher gross margin.

Operating Costs and Expenses

Research and Development

Research and development expenses were $11.1 million and $12.3 million for the three months ended June 30, 2025 and 2024, respectively. The $1.2 million decrease in research and development expenses was primarily driven by a decrease of $0.9 million in personnel and stock-based compensation costs which was primarily related to our business realignment announced in January 2025.

Research and development expenses were $22.5 million and $25.6 million for the six months ended June 30, 2025 and 2024, respectively. The $3.1 million decrease in research and development expenses was primarily driven by a $1.8 million decrease in personnel and stock-based compensation costs, which was primarily related to our business realignment announced in January 2025, and a total $0.4 million decrease in clinical trials and outsourced research and supplies due to the timing of completion in our GD2-SADA program and investment in our ongoing SADA PRIT programs.

Selling, General, and Administrative

Selling, general, and administrative expenses were $11.3 million and $17.2 million for the three months ended June 30, 2025 and 2024, respectively. The $5.9 million decrease in selling, general and administrative expenses was primarily attributable to a net impact of $3.8 million related to litigation settlements during the three months ended June 30, 2024 and a $1.7 million decrease in legal expenses.

Selling, general, and administrative expenses were $24.4 million and $28.7 million for the six months ended June 30, 2025 and 2024, respectively. The $4.3 million decrease in selling, general, and administrative expenses was primarily attributable to a net impact of $3.8 million related to litigation settlements in the six months ended June 30, 2024, as noted above.

Interest and Other Income

Interest and other income were $2.3 million and $0.6 million for the three months ended June 30, 2025 and 2024, respectively. Interest and other income increased by $1.7 million primarily due to $2.0 million of foreign currency transaction gains in the three months ended June 30, 2025, partially offset by a $0.3 million decrease in interest earned on cash and cash equivalents.

Interest and other income were $3.7 million and $1.1 million for the six months ended June 30, 2025 and 2024, respectively. Interest and other income increased by $2.6 million primarily due to $3.3 million of foreign currency transaction gains, partially offset by a $0.7 million decrease in interest earned on cash and cash equivalents.

Net Loss

Y-mAbs reported a net loss for the quarter ended June 30, 2025, of $3.2 million, or ($0.07) per basic and diluted share, compared to a net loss of $9.2 million, or ($0.21) per basic and diluted share, for the quarter ended June 30, 2024. The decrease in net loss for the quarter ended June 30, 2025 was primarily driven by the above noted $3.8 million in litigation settlements in the quarter end June 30, 2024 and the favorable impact of $2.0 million of foreign currency transaction gains in the quarter ended June 30, 2025.

Cash and Cash Equivalents

As of June 30, 2025, Y-mAbs had approximately $62.3 million in cash and cash equivalents. The Company continues its efforts to be capital efficient in its operations.

In light of the pending transaction, Y-mAbs will not be holding a webcast and conference call to discuss its second quarter 2025 results.

About Y-mAbs

Y-mAbs is a commercial-stage biopharmaceutical company focused on the development and commercialization of novel, radioimmunotherapy and antibody-based therapeutic cancer products. The Company鈥檚 broad and advanced commercial product pipeline includes the anti-GD2 therapy DANYELZA庐 (naxitamab-gqgk), the first FDA-approved treatment for patients with relapsed or refractory high-risk neuroblastoma in the bone or bone marrow after a partial response, minor response, or stable disease to prior therapy. The Company鈥檚 technologies include its investigational Self-Assembly DisAssembly (鈥淪ADA鈥�) Pretargeted Radioimmunotherapy Platform (鈥淧RIT鈥�) and bispecific antibodies generated using the Y-BiClone platform.

Forward-Looking Statements

This press release contains forward-looking statements that involve risks and uncertainties relating to future events and the future performance of Y-mAbs and SERB, including statements relating to the ability to complete and the timing of completion of the transactions contemplated by the Agreement and Plan of Merger dated as of August 4, 2025 by and among Y-mAbs, SERB, and the other parties thereto (the 鈥淢erger Agreement鈥�), including the anticipated occurrence, manner and timing of the proposed tender offer, the parties鈥� ability to satisfy the conditions to the consummation of the tender offer and the other conditions to the consummation of the subsequent merger set forth in the Merger Agreement, the possibility of any termination of the Merger Agreement, and the prospective benefits of the proposed transaction; and other statements that are not historical facts. The forward-looking statements contained in this release are based on current expectations and assumptions that are subject to risks and uncertainties which may cause actual results to differ materially from the forward-looking statements. These statements may contain words such as 鈥渕ay,鈥� 鈥渨ill,鈥� 鈥渨ould,鈥� 鈥渃ould,鈥� 鈥渆xpect,鈥� 鈥渁nticipate,鈥� 鈥渋ntend,鈥� 鈥減lan,鈥� 鈥渂elieve,鈥� 鈥渆stimate,鈥� 鈥減roject,鈥� 鈥渟eek,鈥� 鈥渟hould,鈥� 鈥渟trategy,鈥� 鈥渇uture,鈥� 鈥渙pportunity,鈥� 鈥減otential鈥� or other similar words and expressions indicating future results. Risks that may cause these forward-looking statements to be inaccurate include, without limitation: uncertainties as to the timing of the tender offer; uncertainties as to how many of Y-mAbs鈥� stockholders will tender their stock in the offer; the possibility that competing offers or acquisition proposals will be made; the possibility that various closing conditions for the transaction may not be satisfied or waived, including that a governmental entity may prohibit, delay, or refuse to grant approval for the consummation of the transaction (or only grant approval subject to adverse conditions or limitations); the difficulty of predicting the timing or outcome of regulatory approvals or actions, if any; the occurrence of any event, change or other circumstance that could give rise to the termination of the Merger Agreement; the possibility that the transaction does not close; risks related to the parties鈥� ability to realize the anticipated benefits of the proposed transaction, including the possibility that the expected benefits from the proposed acquisition will not be realized or will not be realized within the expected time period and that Y-mAbs and SERB will not be integrated successfully or that such integration may be more difficult, time-consuming or costly than expected; the effects of the transaction on relationships with employees, customers, suppliers, other business partners or governmental entities; negative effects of this announcement or the consummation of the proposed transaction on the market price of Y-mAbs鈥� common stock and/or Y-mAbs鈥� operating results; significant transaction costs; unknown or inestimable liabilities; the risk of litigation and/or regulatory actions related to the proposed transaction; SERB鈥檚 ability to fund the proposed transaction; obtaining and maintaining adequate coverage and reimbursement for products; the time-consuming and uncertain regulatory approval process; the costly and time-consuming pharmaceutical product development process and the uncertainty of clinical success, including risks related to failure or delays in successfully initiating or completing clinical trials and assessing patients; global economic, financial, and healthcare system disruptions and the current and potential future negative impacts to the parties鈥� business operations and financial results; the sufficiency of the parties鈥� cash flows and capital resources; the parties鈥� ability to achieve targeted or expected future financial performance and results and the uncertainty of future tax, accounting and other provisions and estimates; and other risks and uncertainties affecting Y-mAbs and SERB, including those described from time to time under the caption 鈥淩isk Factors鈥� and elsewhere in Y-mAbs鈥� filings and reports with the U.S. Securities and Exchange Commission (the 鈥淪EC鈥�), including Y-mAbs鈥� Annual Report on Form 10-K for the fiscal year ended December 31, 2024 and Quarterly Reports on Form 10-Q for the quarterly periods ended March 31, 2025 and June 30, 2025, as well as the Tender Offer Statement on Schedule TO and related tender offer documents to be filed by SERB and its acquisition subsidiary, and the Solicitation/Recommendation Statement on Schedule 14D-9 to be filed by Y-mAbs. Any forward-looking statements are made based on the current beliefs and judgments of Y-mAbs鈥� and SERB鈥檚 management, and the reader is cautioned not to rely on any forward-looking statements made by Y-mAbs or SERB. Except as required by law, Y-mAbs and SERB do not undertake any obligation to update (publicly or otherwise) any forward-looking statement, including without limitation any financial projection or guidance, whether as a result of new information, future events, or otherwise.

DANYELZA庐 and Y-mAbs庐 are registered trademarks of Y-mAbs Therapeutics, Inc.

Investor Contact:

Courtney Dugan
VP, Head of Investor Relations
[email protected]