secwatch.observer — SEC 8-K summary
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Issuer:     TETRA TECH INC (TTEK)
CIK:        0000831641
Form:       8-K
Filed at:   2026-03-26T23:59:59+00:00
Accession:  0001104659-26-035179
Event type: leadership
Sentiment:  neutral
Materiality: 0.30
Item codes: 5.02, 8.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Tetra Tech appoints Eric W. Thornburg to Board of Directors; effective March 30, 2026
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- Thornburg to serve on Compensation Committee and Nominating and Corporate Governance Committee.
- Board expands to eight members; Thornburg recently retired as CEO of H20 America (formerly SJW Group).
- Annual non-employee director compensation: $110,000 retainer, $2,000 per meeting over eight, $175,000 equity award (60% PSUs, 40% RSUs) prorated.
- Thornburg brings over 40 years of water industry leadership, including CEO roles at Connecticut Water Service and American Water Works.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/831641/000110465926035179/0001104659-26-035179-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/831641/000110465926035179/tm269832d1_8k.htm
  HTML page:      https://secwatch.observer/filing/0001104659-26-035179

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer