---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-125397"
form_type: "8-K"
ticker: "WLDN"
cik: "0001370450"
company_name: "Willdan Group, Inc."
filed_at: "2023-12-12T23:59:59+00:00"
generated_at: "2026-06-07T14:04:46.060015+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Willdan Group CEO Tom Brisbin to retire; President Mike Bieber named successor effective Dec 30, 2023

## Summary
- Tom Brisbin retires as CEO effective Dec 29, 2023, remains Chairman and will serve as part-time consultant.
- President Mike Bieber appointed CEO and Board member effective Dec 30, 2023; base salary increased to $525,000.
- CFO Kim Early and General Counsel Micah Chen promoted to Executive Vice President effective Dec 30, 2023.
- Press release states Willdan on track for nearly $500M revenue in 2023 with 1,600 team members.

## SEC filing metadata
- accession: 0001104659-23-125397
- form_type: 8-K
- ticker: WLDN
- cik: 0001370450
- company_name: Willdan Group, Inc.
- filed_at: 2023-12-12T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1370450/000110465923125397/0001104659-23-125397-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1370450/000110465923125397/tm2332674d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-125397
- JSON: https://secwatch.observer/filing/0001104659-23-125397.json
- Plain text: https://secwatch.observer/filing/0001104659-23-125397.txt

## Key facts
- Executive change
  Michael A. Bieber was appointed as Director at Willdan Group, Inc..
  - Action: appointed
  - Role: Director
  source text: the Board increased the size of the Board from seven to eight members and appointed Mr. Bieber to the Board to fill the newly created vacancy
  evidence_url: https://www.sec.gov/Archives/edgar/data/1370450/000110465923125397/0001104659-23-125397-index.htm
- Executive change
  Thomas D. Brisbin retired as Chief Executive Officer at Willdan Group, Inc..
  - Action: retired
  - Role: Chief Executive Officer
  source text: Thomas D. Brisbin informed the Board of Directors (the “Board”) of Willdan Group, Inc. (the “Company”) of his intention to retire and resign as Chief Executive Officer of the Company, effective December 29, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1370450/000110465923125397/0001104659-23-125397-index.htm
- Executive change
  Michael A. Bieber was appointed as President and Chief Executive Officer at Willdan Group, Inc..
  - Action: appointed
  - Role: President and Chief Executive Officer
  source text: the Board appointed Michael A. Bieber, the Company’s current President, as President and Chief Executive Officer of the Company, effective as of December 30, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1370450/000110465923125397/0001104659-23-125397-index.htm

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