secwatch.observer — SEC 8-K summary
======================================

Issuer:     TETRA TECH INC (TTEK)
CIK:        0000831641
Form:       8-K
Filed at:   2026-01-06T23:59:59+00:00
Accession:  0001104659-26-001352
Event type: leadership
Sentiment:  neutral
Materiality: 0.60
Item codes: 5.02, 8.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Tetra Tech appoints Roger Argus CEO, Dan Batrack becomes Executive Chairman effective Feb 19, 2026
--------------------------------------------------------------------------------

- Roger Argus, currently President, will succeed Dan Batrack as CEO and join the Board on Feb 19, 2026.
- Dan Batrack transitions to Executive Chairman for a minimum of two years, ensuring strategic continuity.
- Argus has over 30 years at Tetra Tech, most recently as President and previously leading major divisions.
- Batrack served as CEO for 20+ years, growing Tetra Tech to ~$5B revenue and 25,000 employees globally.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/831641/000110465926001352/0001104659-26-001352-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/831641/000110465926001352/tm262000d1_8k.htm
  HTML page:      https://secwatch.observer/filing/0001104659-26-001352

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