{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-24-085407","form_type":"8-K","ticker":"TTEK","cik":"0000831641","company_name":"TETRA TECH INC","filed_at":"2024-08-02T23:59:59+00:00","discovered_at":"2026-05-14T18:03:16.007599+00:00","generated_at":"2026-05-31T13:33:40.353048+00:00","sec_items":["5.02","8.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Tetra Tech appoints John M. Douglas to board; Joanne Maguire retiring Sep 30","bullets":["John M. Douglas appointed to Tetra Tech's Board effective September 30, 2024; will serve on Compensation and Nominating & Governance Committees.","Douglas most recently was CEO of RPS Group (2017-2023), a UK-listed consultancy in energy, water, and program management.","Joanne M. Maguire will retire from the Board on September 30, 2024; she did not cite any disagreement with company operations.","Board will consist of seven members after the changes.","Douglas holds an MBA from London Business School and a B.S. in Civil Engineering from Adelaide University."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-24-085407","json":"https://secwatch.observer/filing/0001104659-24-085407.json","markdown":"https://secwatch.observer/filing/0001104659-24-085407.md","text":"https://secwatch.observer/filing/0001104659-24-085407.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/831641/000110465924085407/0001104659-24-085407-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/831641/000110465924085407/tm2420667d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-31T13:33:40.353048+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":"30cb444d16","claim":"Joanne M. Maguire departed as Director at TETRA TECH INC.","evidence_excerpt":"Joanne M. Maguire notified the Company on July 29, 2024 of her decision to retire as a member of the Board, effective September 30, 2024","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/831641/000110465924085407/0001104659-24-085407-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"retire"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"9a5b061067","claim":"John M. Douglas was appointed as Director at TETRA TECH INC.","evidence_excerpt":"John M. Douglas has been appointed to the Board of Directors of the Company (the “Board”), effective September 30, 2024","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/831641/000110465924085407/0001104659-24-085407-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}