{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-24-042833","form_type":"8-K","ticker":"CCCC","cik":"0001662579","company_name":"C4 Therapeutics, Inc.","filed_at":"2024-10-15T23:59:59+00:00","discovered_at":"2026-05-14T18:03:09.146893+00:00","generated_at":"2026-05-30T14:37:03.836365+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"C4 Therapeutics appoints Paige Mahaney as CSO; Stewart Fisher retires effective Oct 28","bullets":["Paige Mahaney, Ph.D., appointed Chief Scientific Officer effective October 28, 2024; succeeds Stewart Fisher.","Fisher will remain as Senior Scientific Advisor through Dec 31, 2024, then consultant through Dec 31, 2025.","Mahaney joins from Exelixis; receives $510K base salary, $150K sign-on bonus, and 345,600 stock options.","Fisher's retirement not due to any disagreement; entered consulting agreement for continued vesting of equity.","Mahaney brings over 25 years pharma experience, most recently SVP of drug discovery at Exelixis."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-24-042833","json":"https://secwatch.observer/filing/0001628280-24-042833.json","markdown":"https://secwatch.observer/filing/0001628280-24-042833.md","text":"https://secwatch.observer/filing/0001628280-24-042833.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1662579/000162828024042833/0001628280-24-042833-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1662579/000162828024042833/cccc-20241015.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-30T14:37:03.836365+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":"2dce266054","claim":"Stewart Fisher retired as Chief Scientific Officer at C4 Therapeutics, Inc..","evidence_excerpt":"On October 1, 2024, Stewart Fisher, Ph.D. informed us of his intent to retire from the role of Chief Scientific Officer of C4 Therapeutics, Inc.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1662579/000162828024042833/0001628280-24-042833-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"retired"},{"label":"Role","value":"Chief Scientific Officer"}],"fact_type":"executive_change"},{"claim_id":"7c35795cab","claim":"Paige Mahaney was appointed as Chief Scientific Officer at C4 Therapeutics, Inc..","evidence_excerpt":"On October 15, 2024, the Company announced the appointment of Paige Mahaney, Ph.D. as its Chief Scientific Officer, effective as of October 28, 2024.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1662579/000162828024042833/0001628280-24-042833-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Scientific Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}