---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-22-119143"
form_type: "8-K"
ticker: "TTEK"
cik: "0000831641"
company_name: "TETRA TECH INC"
filed_at: "2022-11-15T23:59:59+00:00"
generated_at: "2026-06-21T19:08:36.999150+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Tetra Tech appoints Christiana Obiaya to Board, effective Jan 2, 2023

## Summary
- Board expands to nine members with Obiaya joining Audit and Strategic Planning & Enterprise Risk Committees.
- Obiaya is CFO of Heliogen and former CFO of Bechtel's global Energy business unit.
- She brings ~20 years of experience in finance, strategy, and renewable energy project development.
- Compensation includes $100K annual retainer, meeting fees, and $150K pro-rated equity award.

## SEC filing metadata
- accession: 0001104659-22-119143
- form_type: 8-K
- ticker: TTEK
- cik: 0000831641
- company_name: TETRA TECH INC
- filed_at: 2022-11-15T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/831641/000110465922119143/0001104659-22-119143-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/831641/000110465922119143/tm2230538d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-22-119143
- JSON: https://secwatch.observer/filing/0001104659-22-119143.json
- Plain text: https://secwatch.observer/filing/0001104659-22-119143.txt

## Key facts
- Executive change
  Christiana Obiaya was appointed as Director at TETRA TECH INC.
  - Action: appointed
  - Role: Director
  source text: Christiana Obiaya has been appointed to the Board of Directors of the Company (the “Board”), effective January 2, 2023
  evidence_url: https://www.sec.gov/Archives/edgar/data/831641/000110465922119143/0001104659-22-119143-index.htm

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