secwatch.observer — SEC 8-K summary ====================================== Issuer: Boundless Bio, Inc. (BOLD) CIK: 0001782303 Form: 8-K Filed at: 2026-08-28T21:25:54+00:00 Accession: 0001193125-26-374787 Event type: m_and_a Sentiment: neutral Materiality: 0.50 Item codes: 1.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Boundless Bio amends Serapha merger: RSU conversion, pre-funded warrants, vote standard -------------------------------------------------------------------------------- - Amendment No. 1 (8/28/26) to the June 22, 2026 merger agreement among Boundless Bio, Boulder Merger Sub, and Serapha Bio. - Serapha RSUs (vested or unvested) convert into Assumed RSUs covering Boundless Bio common stock at the Exchange Ratio. - Pre-funded warrants with $0.00001 exercise price issued as Merger Consideration for holders exceeding Beneficial Ownership Limits (0–19.99%). - Vote standard for increasing authorized Boundless Bio shares changed to majority of shares properly cast, not majority outstanding. - Company Pre-Closing Financing definitions clarified; cash proceeds of at least the minimum amount required by 8/28/26 close. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1782303/000119312526374787/0001193125-26-374787-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1782303/000119312526374787/d111273d8k.htm HTML page: https://secwatch.observer/filing/0001193125-26-374787 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer