---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-118774"
form_type: "8-K/A"
ticker: "TTEK"
cik: "0000831641"
company_name: "TETRA TECH INC"
filed_at: "2023-11-15T23:59:59+00:00"
generated_at: "2026-06-08T02:55:42.193950+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.15
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# Tetra Tech adopts annual say-on-pay votes based on 2023 stockholder vote

## Summary
- Company determined to hold say-on-pay votes annually after stockholders favored that frequency.
- Next advisory vote on frequency of say-on-pay votes must occur by the 2029 Annual Meeting.
- Decision follows the non-binding stockholder vote at the February 28, 2023 annual meeting.

## SEC filing metadata
- accession: 0001104659-23-118774
- form_type: 8-K/A
- ticker: TTEK
- cik: 0000831641
- company_name: TETRA TECH INC
- filed_at: 2023-11-15T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.15
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 5.07
- EDGAR index: https://www.sec.gov/Archives/edgar/data/831641/000110465923118774/0001104659-23-118774-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/831641/000110465923118774/tm2330497d1_8ka.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-118774
- JSON: https://secwatch.observer/filing/0001104659-23-118774.json
- Plain text: https://secwatch.observer/filing/0001104659-23-118774.txt

## Key facts
- Shareholder Votes
  TETRA TECH INC shareholders approved Advisory vote on the frequency of future Say-on-Pay votes at the 2023-02-28 meeting.
  - Proposal: say on pay frequency
  - Outcome: passed
  - Meeting: 2023-02-28
  source text: the Company’s stockholders cast the greatest number of votes in favor of holding hold future Say-on-Pay votes every year.
  evidence_url: https://www.sec.gov/Archives/edgar/data/831641/000110465923118774/0001104659-23-118774-index.htm

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