{"schema_version":"secwatch.filing_event.v1","accession":"0001534969-23-000127","form_type":"8-K","ticker":"SERA","cik":"0001534969","company_name":"SERA PROGNOSTICS, INC.","filed_at":"2023-12-12T23:59:59+00:00","discovered_at":"2026-05-14T18:03:29.415578+00:00","generated_at":"2026-06-07T14:10:22.568239+00:00","sec_items":["1.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"medium","headline":"Sera Prognostics amends Baker Bros. director nomination threshold to 19.9%","bullets":["Amendment No. 2 to Side Letter with Baker Bros. Advisors LP executed Dec 6, 2023.","Baker Bros. must now beneficially own at least 19.9% of total voting power to nominate a director.","Previous threshold was lower; change raises bar for board appointment rights.","Amendment will be filed as exhibit to 2023 Form 10-K."],"urls":{"canonical":"https://secwatch.observer/filing/0001534969-23-000127","json":"https://secwatch.observer/filing/0001534969-23-000127.json","markdown":"https://secwatch.observer/filing/0001534969-23-000127.md","text":"https://secwatch.observer/filing/0001534969-23-000127.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1534969/000153496923000127/0001534969-23-000127-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1534969/000153496923000127/sera-20231206.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-07T14:10:22.568239+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":"744b29e9db55a0c483cb544756e4ee169f0d3086","claim":"SERA PROGNOSTICS, INC. amended Amendment No. 2 with Baker Bros. Advisors LP and certain affiliates (effective 2023-12-06).","evidence_excerpt":"On December 6, 2023, Sera Prognostics, Inc. (the “Company”) entered into the second amendment (“Amendment No. 2”) to that certain Side Letter, dated as of April 29, 2021 (the “Side Letter”), previously amended effective February 16, 2023, with Baker Bros. Advisors LP and certain affiliates of Baker Bros. Advisors LP (collectively, “Baker Bros. Investors”).","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1534969/000153496923000127/0001534969-23-000127-index.htm","confidence":0.9,"family_label":"Material Agreements","details":[{"label":"Action","value":"amendment"},{"label":"Counterparty","value":"Baker Bros. Advisors LP and certain affiliates"},{"label":"Effective","value":"2023-12-06"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}