{"schema_version":"secwatch.filing_event.v1","accession":"0001558370-25-000576","form_type":"8-K","ticker":"CBIO","cik":"0001253689","company_name":"CRESCENT BIOPHARMA, INC.","filed_at":"2025-01-31T23:59:59+00:00","discovered_at":"2026-05-14T18:03:03.145695+00:00","generated_at":"2026-05-27T04:35:24.768280+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"negative","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"CEO and CFO to depart GlycoMimetics by March 31; will consult through merger close","bullets":["CEO Harout Semerjian and CFO Brian Hahn notified board of intent to resign by March 31, 2025.","Both expected to enter consulting agreements through expected close of merger with Crescent Biopharma.","Departures coincide with pending merger; no replacements named yet.","Notice date: January 29, 2025."],"urls":{"canonical":"https://secwatch.observer/filing/0001558370-25-000576","json":"https://secwatch.observer/filing/0001558370-25-000576.json","markdown":"https://secwatch.observer/filing/0001558370-25-000576.md","text":"https://secwatch.observer/filing/0001558370-25-000576.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1253689/000155837025000576/0001558370-25-000576-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1253689/000155837025000576/glyc-20250129x8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-27T04:35:24.768280+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":"519a68de04","claim":"Brian Hahn resigned as Chief Financial Officer at CRESCENT BIOPHARMA, INC..","evidence_excerpt":"Mr. Brian Hahn, the Company’s Chief Financial Officer, notified the Company’s board of directors of his intent to cease his respective employment with the Company no later than March 31, 2025.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1253689/000155837025000576/0001558370-25-000576-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Chief Financial Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}