{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-123764","form_type":"8-K","ticker":"TTEK","cik":"0000831641","company_name":"TETRA TECH INC","filed_at":"2025-12-22T23:59:59+00:00","discovered_at":"2026-05-14T18:02:42.295751+00:00","generated_at":"2026-05-16T12:29:56.433050+00:00","sec_items":["5.02","8.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.35,"calibrated_materiality_score":0.35,"confidence":"high","headline":"Tetra Tech appoints ex-American Water CEO Susan Hardwick and ex-US Ecology CEO Jeff Feeler to board","bullets":["M. Susan Hardwick and Jeffrey R. Feeler appointed to Tetra Tech board, effective December 29, 2025.","Hardwick, former CEO of American Water (2022-2024), joins Audit and Nominating/Governance committees.","Feeler, former Chairman/CEO of US Ecology (2013-2022), joins Audit and Compensation committees.","Both will receive standard non-employee director compensation: $110K annual retainer plus $175K equity award pro-rated.","Board expands to eight members with these appointments."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-123764","json":"https://secwatch.observer/filing/0001104659-25-123764.json","markdown":"https://secwatch.observer/filing/0001104659-25-123764.md","text":"https://secwatch.observer/filing/0001104659-25-123764.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/831641/000110465925123764/0001104659-25-123764-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/831641/000110465925123764/tm2534127d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T12:29:56.433050+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":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}