secwatch.observer — SEC 8-K summary ====================================== Issuer: Y-mAbs Therapeutics, Inc. (—) CIK: 0001722964 Form: 8-K Filed at: 2025-09-16T23:59:59+00:00 Accession: 0001104659-25-090232 Event type: m_and_a Sentiment: neutral Materiality: 1.00 Item codes: 2.01, 3.01, 3.03, 5.01, 5.02, 5.03, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Y-mAbs acquired by Perseus BidCo US; tender offer completed at $8.60/share, ~$413M total -------------------------------------------------------------------------------- - Approximately 39.8M shares (~87.22%) tendered; Purchaser accepted all validly tendered shares. - Merger closed Sep 16; each outstanding share (except excluded) converted to $8.60 cash. - Aggregate consideration ~$413M funded via cash on hand and short-term financing. - Shares to be delisted from Nasdaq; company will file Form 15 to suspend reporting obligations. - All prior directors and officers resigned; new board and officers appointed (Vanessa Wolfeler, Robert Duffield, Daniel Dolan). Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1722964/000110465925090232/0001104659-25-090232-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1722964/000110465925090232/tm2525998d2_8k.htm HTML page: https://secwatch.observer/filing/0001104659-25-090232 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer