{"schema_version":"secwatch.filing_event.v1","accession":"0001758730-23-000129","form_type":"8-K","ticker":"TW","cik":"0001758730","company_name":"Tradeweb Markets Inc.","filed_at":"2023-05-15T23:59:59+00:00","discovered_at":"2026-05-14T18:03:40.414260+00:00","generated_at":"2026-06-15T01:22:17.401747+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":"Tradeweb Chairman Lee Olesky to retire; Jacques Aigrain elected as new Chairman","bullets":["Lee Olesky to resign as Chairperson and Board member effective June 30, 2023.","Board elected Jacques Aigrain as new Chairperson effective July 1, 2023.","Olesky co-founded Tradeweb in 1996 and retired as CEO in December 2022.","Aigrain joined board in 2022; has 30+ years financial services experience.","Pro-rata vesting of Olesky's RSU grant approved by Compensation Committee."],"urls":{"canonical":"https://secwatch.observer/filing/0001758730-23-000129","json":"https://secwatch.observer/filing/0001758730-23-000129.json","markdown":"https://secwatch.observer/filing/0001758730-23-000129.md","text":"https://secwatch.observer/filing/0001758730-23-000129.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1758730/000175873023000129/0001758730-23-000129-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1758730/000175873023000129/tw-20230515.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-15T01:22:17.401747+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":"094a28d151","claim":"Lee Olesky resigned as Chairperson of the Board at Tradeweb Markets Inc..","evidence_excerpt":"he will resign from his position as Chairperson of the Board and as a member of the Board, effective as of June 30, 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1758730/000175873023000129/0001758730-23-000129-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Chairperson of the Board"}],"fact_type":"executive_change"},{"claim_id":"ddc8af6062","claim":"Jacques Aigrain was elected as Chairperson of the Board at Tradeweb Markets Inc..","evidence_excerpt":"On May 12, 2023, the Board elected Jacques Aigrain to succeed Mr. Olesky as Chairperson of the Board, effective as of July 1, 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1758730/000175873023000129/0001758730-23-000129-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"elected"},{"label":"Role","value":"Chairperson of the Board"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}