---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-019107"
form_type: "8-K"
ticker: "TTEK"
cik: "0000831641"
company_name: "TETRA TECH INC"
filed_at: "2025-02-28T23:59:59+00:00"
generated_at: "2026-05-26T00:49:17.122539+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Tetra Tech board reduced to six members after director John Douglas retires; annual meeting proposals pass

## Summary
- John Douglas retired as director effective Feb. 27, 2025; board size reduced from seven to six.
- All six director nominees elected; votes for each ranged from ~211.8M to ~220.6M.
- Advisory say-on-pay resolution approved: 205.9M for, 17.8M against, 1.1M abstain.
- Ratification of PricewaterhouseCoopers as fiscal 2025 auditor passed: 218.6M for, 21.1M against.

## SEC filing metadata
- accession: 0001104659-25-019107
- form_type: 8-K
- ticker: TTEK
- cik: 0000831641
- company_name: TETRA TECH INC
- filed_at: 2025-02-28T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02, 5.07
- EDGAR index: https://www.sec.gov/Archives/edgar/data/831641/000110465925019107/0001104659-25-019107-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/831641/000110465925019107/tm257864d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-019107
- JSON: https://secwatch.observer/filing/0001104659-25-019107.json
- Plain text: https://secwatch.observer/filing/0001104659-25-019107.txt

## Key facts
- Executive change
  John Douglas retired as Director at TETRA TECH INC.
  - Action: retired
  - Role: Director
  source text: John Douglas notified Tetra Tech, Inc. (the “Company”) of his decision to retire as a member of the Board of Directors, effective upon the completion of his term on February 27, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/831641/000110465925019107/0001104659-25-019107-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.