{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-205570","form_type":"8-K","ticker":null,"cik":"0001888012","company_name":"HilleVax, Inc.","filed_at":"2025-09-17T23:59:59+00:00","discovered_at":"2026-05-14T18:02:45.516760+00:00","generated_at":"2026-05-17T06:23:33.682538+00:00","sec_items":["2.01","3.01","3.03","5.01","5.02","5.03","9.01"],"event_type":"m_and_a","sentiment":"neutral","materiality_score":0.95,"calibrated_materiality_score":0.95,"confidence":"high","headline":"HilleVax acquired by XOMA Royalty for $1.95/share plus CVR; delisted from Nasdaq","bullets":["39,214,689 shares (77.48% of outstanding) validly tendered; minimum condition satisfied.","Shareholders receive $1.95 cash per share plus one non-transferable CVR for future payments.","CVR entitles holders to 90% of net proceeds from Legacy Assets (HIL-216, Kangh License) and net cash adjustments.","All directors and officers (CEO Hershberg, CFO Maltbie) ceased; Merger Sub directors and officers assumed roles.","Nasdaq delisting effective Sept 17, 2025; Form 15 to be filed to deregister shares."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-205570","json":"https://secwatch.observer/filing/0001193125-25-205570.json","markdown":"https://secwatch.observer/filing/0001193125-25-205570.md","text":"https://secwatch.observer/filing/0001193125-25-205570.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1888012/000119312525205570/0001193125-25-205570-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1888012/000119312525205570/d91297d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T06:23:33.682538+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"050e40810e0741ec579f8e264a9913c8897eb8b7","claim":"HilleVax, Inc.: Certificate of incorporation amended and restated in its entirety in connection with merger (effective 2025-09-17).","evidence_excerpt":"on September 17, 2025, the Company’s certificate of incorporation and bylaws were each amended and restated in their entirety and became the certificate of incorporation and bylaws of the Surviving Corporation.","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/1888012/000119312525205570/0001193125-25-205570-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"charter amendment"},{"label":"Effective","value":"2025-09-17"}],"fact_type":"governance_change"},{"claim_id":"6701fef85e6c1025f00ae3378e9180f6d76c7692","claim":"HilleVax, Inc.: Bylaws amended and restated in their entirety in connection with merger (effective 2025-09-17).","evidence_excerpt":"on September 17, 2025, the Company’s certificate of incorporation and bylaws were each amended and restated in their entirety and became the certificate of incorporation and bylaws of the Surviving Corporation.","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/1888012/000119312525205570/0001193125-25-205570-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"bylaw amendment"},{"label":"Effective","value":"2025-09-17"}],"fact_type":"governance_change"},{"claim_id":"94ed4a8f93c3477a41cb01240cbba0bf613ff8ea","claim":"HilleVax, Inc. underwent a change of control involving XOMA Royalty Corporation (Parent) and its wholly-owned subsidiary XRA 4 Corp. (Merger Sub) for $1.95 in cash per Share plus one non-transferable contractual contingent value right (closed 2025-09-17).","evidence_excerpt":"a tender offer (the “Offer”) to acquire any and all of the issued and outstanding shares of common stock, par value $0.0001 per share, of the Company (the “Shares”), for (i) $1.95 in cash per Share, payable without interest (the “Cash Amount”), plus (ii) one non-transferable contractual contingent value right (each, a “CVR”) per Share, representing the","evidence_source":"SEC 8-K Item 2.01/5.01","evidence_url":"https://www.sec.gov/Archives/edgar/data/1888012/000119312525205570/0001193125-25-205570-index.htm","confidence":0.95,"family_label":"M&A Transactions","details":[{"label":"Action","value":"change of control"},{"label":"Counterparty","value":"XOMA Royalty Corporation (Parent) and its wholly-owned subsidiary XRA 4 Corp. (Merger Sub)"},{"label":"Consideration","value":"$1.95 in cash per Share plus one non-transferable contractual contingent value right"},{"label":"Closing","value":"2025-09-17"}],"fact_type":"ma_transaction"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}