---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-028407"
form_type: "8-K"
ticker: "TTEK"
cik: "0000831641"
company_name: "TETRA TECH INC"
filed_at: "2023-03-03T23:59:59+00:00"
generated_at: "2026-06-18T13:53:37.579359+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "high"
source: SEC EDGAR
---

# Tetra Tech shareholders elect eight directors, approve executive compensation and auditor ratification at annual meeting

## Summary
- All eight director nominees elected; J. Kenneth Thompson received 38.7M for, 5.2M against.
- Advisory vote on executive compensation passed with 41.7M for, 2.2M against.
- Shareholders preferred one-year frequency for future advisory votes on executive compensation (43.0M for one year).
- Ratification of PricewaterhouseCoopers as auditor for fiscal 2023 approved with 46.6M for, 0.6M against.

## SEC filing metadata
- accession: 0001104659-23-028407
- form_type: 8-K
- ticker: TTEK
- cik: 0000831641
- company_name: TETRA TECH INC
- filed_at: 2023-03-03T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: high
- sec_items: 5.07
- EDGAR index: https://www.sec.gov/Archives/edgar/data/831641/000110465923028407/0001104659-23-028407-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/831641/000110465923028407/tm238206d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-028407
- JSON: https://secwatch.observer/filing/0001104659-23-028407.json
- Plain text: https://secwatch.observer/filing/0001104659-23-028407.txt

## Key facts
- Shareholder Votes
  TETRA TECH INC shareholders approved Preferred frequency of advisory votes on executive compensation at the 2023-02-28 meeting.
  - Proposal: say on pay frequency
  - Outcome: passed
  - Meeting: 2023-02-28
  source text: Preferred Frequency of Advisory Votes on Executive Compensation: One Year Two Years Three Years Abstain 43,004,509 15,569 937,102 38,966
  evidence_url: https://www.sec.gov/Archives/edgar/data/831641/000110465923028407/0001104659-23-028407-index.htm
- Shareholder Votes
  TETRA TECH INC shareholders approved Ratify the appointment of PricewaterhouseCoopers LLP as independent registered public accounting firm for fiscal 2023 at the 2023-02-28 meeting.
  - Proposal: auditor ratification
  - Outcome: passed
  - Meeting: 2023-02-28
  source text: Appointment of PricewaterhouseCoopers LLP: For Against Abstain Non-Votes (1) 46,552,759 638,444 42,817 --
  evidence_url: https://www.sec.gov/Archives/edgar/data/831641/000110465923028407/0001104659-23-028407-index.htm
- Shareholder Votes
  TETRA TECH INC shareholders approved Advisory resolution regarding executive compensation at the 2023-02-28 meeting.
  - Proposal: say on pay
  - Outcome: passed
  - Meeting: 2023-02-28
  source text: Advisory Resolution Regarding Executive Compensation: For Against Abstain Non-Votes 41,745,090 2,191,388 59,668 3,237,874
  evidence_url: https://www.sec.gov/Archives/edgar/data/831641/000110465923028407/0001104659-23-028407-index.htm
- Shareholder Votes
  TETRA TECH INC shareholders approved Election of eight members to the Board of Directors at the 2023-02-28 meeting.
  - Proposal: director election
  - Outcome: passed
  - Meeting: 2023-02-28
  source text: Election of Directors : Name For Against Abstain Non-Votes Dan L. Batrack 41,299,090 2,484,248 212,808 3,237,874 Gary R. Birkenbeuel 43,553,704 405,990 36,452 3,237,874 Prashant Gandhi 43,686,819 270,328 38,999 3,237,874 Joanne M. Maguire 43,082,588 877,470 36,088 3,237,874 Christiana Obiaya 43,779,713 179,819 36,614 3,237,874 Kimberly E. Ritrievi 43,776,110 183,403 36,633 3,237,874 J. Kenneth Thompson 38,744,530 5,188,157 63,459 3,237,874 Kirsten M. Volpi 43,252,308 707,168 36,670 3,237,874
  evidence_url: https://www.sec.gov/Archives/edgar/data/831641/000110465923028407/0001104659-23-028407-index.htm

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