---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-22-117103"
form_type: "8-K"
ticker: "TTEK"
cik: "0000831641"
company_name: "TETRA TECH INC"
filed_at: "2022-11-10T23:59:59+00:00"
generated_at: "2026-06-22T00:23:07.292203+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Tetra Tech amends bylaws to adopt proxy access for stockholders

## Summary
- Proxy access allows stockholder(s) owning 3%+ for 3+ years to nominate up to 20% of board.
- Amended Bylaws Article 2.13 added; conforming changes to Article 2.7 and other non-substantive updates.
- Effective November 7, 2022, per Board adoption.

## SEC filing metadata
- accession: 0001104659-22-117103
- form_type: 8-K
- ticker: TTEK
- cik: 0000831641
- company_name: TETRA TECH INC
- filed_at: 2022-11-10T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/831641/000110465922117103/0001104659-22-117103-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/831641/000110465922117103/tm2230212d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-22-117103
- JSON: https://secwatch.observer/filing/0001104659-22-117103.json
- Plain text: https://secwatch.observer/filing/0001104659-22-117103.txt

## Key facts
- Governance Changes
  TETRA TECH INC: Added Article 2.13 to implement proxy access, allowing stockholders owning 3% or more for at least three years to nominate directors; made conforming changes to Article 2.7 and other non-substantive updates (effective 2022-11-07).
  - Change: bylaw amendment
  - Effective: 2022-11-07
  source text: On November 7, 2022, the Board of Directors (the “Board”) of Tetra Tech, Inc. (the “Company”) adopted an amendment and restatement of the Company’s bylaws (the “Bylaws”) to implement proxy access.
  evidence_url: https://www.sec.gov/Archives/edgar/data/831641/000110465922117103/0001104659-22-117103-index.htm

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