{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-24-042879","form_type":"8-K/A","ticker":"CCCC","cik":"0001662579","company_name":"C4 Therapeutics, Inc.","filed_at":"2024-10-16T23:59:59+00:00","discovered_at":"2026-05-14T18:03:09.146482+00:00","generated_at":"2026-05-30T13:45:21.235221+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"C4 Therapeutics appoints Paige Mahaney as CSO effective Oct 28; Stewart Fisher retires","bullets":["Paige Mahaney, Ph.D., formerly SVP at Exelixis, appointed CSO effective October 28, 2024.","Stewart Fisher, Ph.D., retires as CSO Oct 28, will serve as Senior Scientific Advisor through Dec 2024, then consultant through Dec 2025.","Mahaney receives $510k base salary, $150k sign-on bonus, up to $75k relocation, and performance bonus up to 40% of base.","Mahaney granted inducement option for 345,600 shares (25% vests at 1 yr, rest over 3 yrs) and RSUs for 76,800 shares (vest over 4 yrs).","Fisher's retirement not due to any disagreement; consulting agreement provides continued equity vesting through Dec 2025."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-24-042879","json":"https://secwatch.observer/filing/0001628280-24-042879.json","markdown":"https://secwatch.observer/filing/0001628280-24-042879.md","text":"https://secwatch.observer/filing/0001628280-24-042879.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1662579/000162828024042879/0001628280-24-042879-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1662579/000162828024042879/cccc-20241015.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-30T13:45:21.235221+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":"4ecc8cfc1d","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/1662579/000162828024042879/0001628280-24-042879-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Scientific Officer"}],"fact_type":"executive_change"},{"claim_id":"b07bfc3f2c","claim":"Stewart Fisher retired as Chief Scientific Officer at C4 Therapeutics, Inc..","evidence_excerpt":"On October 11, 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/1662579/000162828024042879/0001628280-24-042879-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"retired"},{"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"}