{"schema_version":"secwatch.filing_event.v1","accession":"0001503274-25-000038","form_type":"8-K","ticker":"QTRX","cik":"0001503274","company_name":"Quanterix Corp","filed_at":"2025-03-28T23:59:59+00:00","discovered_at":"2026-05-14T18:03:03.818142+00:00","generated_at":"2026-05-24T03:01:05.122320+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"negative","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Quanterix appoints William Donnelly Chairman; Director Madaus resigns after majority vote loss","bullets":["William P. Donnelly appointed Chairman of the Board effective March 24, 2025.","Martin D. Madaus resigns from Board and committees no later than the 2025 annual meeting.","Resignation follows Madaus receiving less than a majority of votes cast for reelection at the 2024 annual meeting.","Madaus's resignation is not due to any disagreement with the company on operations, policies, or practices.","Board deferred the resignation until after discussions with Akoya Biosciences concluded."],"urls":{"canonical":"https://secwatch.observer/filing/0001503274-25-000038","json":"https://secwatch.observer/filing/0001503274-25-000038.json","markdown":"https://secwatch.observer/filing/0001503274-25-000038.md","text":"https://secwatch.observer/filing/0001503274-25-000038.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1503274/000150327425000038/0001503274-25-000038-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1503274/000150327425000038/qtrx-20250327.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-24T03:01:05.122320+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":"d61c77d12d","claim":"Martin D. Madaus resigned as Director at Quanterix Corp.","evidence_excerpt":"On March 27, 2025, Dr. Madaus notified the Board of his intention to resign from the Board and each committee of the Board on which he serves no later than the date of the Company's 2025 annual meeting of stockholders","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1503274/000150327425000038/0001503274-25-000038-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"f7d087d8b8","claim":"William P. Donnelly was appointed as Chairman at Quanterix Corp.","evidence_excerpt":"On March 24, 2025, the board of directors (the \"Board\") of Quanterix Corporation (the \"Company\") appointed William P. Donnelly to serve as Chairman of the Board, effective immediately.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1503274/000150327425000038/0001503274-25-000038-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chairman"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}