Thomas Donald Brisbin - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 4, 2026
Thomas Donald Brisbin has filed 1 SEC Form 4 filing across 1 company in the last 90 days - selling. Lifetime open-market sales: $42.47M.
Profile
Thomas Donald Brisbin is a corporate insider at Willdan Group, Inc. (WLDN). Brisbin has reported 8 insider filings with the SEC since 2024. The most recent filing was in June 2026.
| Role | Insider |
|---|---|
| Notability | 20/100 |
Board memberships
- Willdan Group, Inc.
Trading Pattern
InsiderAlpha's records for Thomas Donald Brisbin go back to 2024: 8 primary Form 4 filings, an average of 2.7 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role Thomas Donald Brisbin has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Insider at Willdan Group, Inc. (WLDN) - 8 filings, 2024 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-18 | WLDN | Willdan Group, Inc. | A - Grant or award | 1.2K | $0.00 | |
| 2026-03-12 | WLDN | Willdan Group, Inc. | A - Grant or award | 24.8K | $0.00 | |
| 2025-08-25 | WLDN | Willdan Group, Inc. | S - Open-market sale | 5.2K | $118.15 | $612K |
| 2025-08-25 | WLDN | Willdan Group, Inc. | M - Option exercise | 5.2K | $16.27 | $84K |
| 2025-08-22 | WLDN | Willdan Group, Inc. | S - Open-market sale | 27.5K | $110.84 | $3.05M |
| 2025-08-22 | WLDN | Willdan Group, Inc. | S - Open-market sale | 33.1K | $109.39 | $3.62M |
| 2025-08-22 | WLDN | Willdan Group, Inc. | S - Open-market sale | 25.0K | $108.90 | $2.72M |
| 2025-08-22 | WLDN | Willdan Group, Inc. | S - Open-market sale | 9.0K | $107.65 | $966K |
| 2025-08-22 | WLDN | Willdan Group, Inc. | S - Open-market sale | 7.5K | $106.68 | $802K |
| 2025-08-22 | WLDN | Willdan Group, Inc. | S - Open-market sale | 4.9K | $105.36 | $517K |
| 2025-08-22 | WLDN | Willdan Group, Inc. | S - Open-market sale | 10.6K | $104.58 | $1.11M |
| 2025-08-21 | WLDN | Willdan Group, Inc. | S - Open-market sale | 100 | $106.34 | $11K |
| 2025-08-21 | WLDN | Willdan Group, Inc. | S - Open-market sale | 33.4K | $105.91 | $3.54M |
| 2025-08-21 | WLDN | Willdan Group, Inc. | S - Open-market sale | 34.0K | $104.66 | $3.55M |
| 2025-08-21 | WLDN | Willdan Group, Inc. | S - Open-market sale | 33.5K | $103.95 | $3.48M |
| 2025-08-21 | WLDN | Willdan Group, Inc. | S - Open-market sale | 17.1K | $103.01 | $1.76M |
| 2025-08-21 | WLDN | Willdan Group, Inc. | S - Open-market sale | 7.0K | $101.87 | $713K |
| 2025-08-20 | WLDN | Willdan Group, Inc. | S - Open-market sale | 7.4K | $104.19 | $772K |
| 2025-08-18 | WLDN | Willdan Group, Inc. | S - Open-market sale | 7.2K | $111.21 | $801K |
| 2025-08-18 | WLDN | Willdan Group, Inc. | S - Open-market sale | 26.3K | $110.51 | $2.90M |
Companies - Last 90 Days
- Willdan Group, Inc. (WLDN) - 1 filing, last 2026-06-18
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Thomas Donald Brisbin has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- Michael A. Bieber - $6.12M of WLDN open-market activity in the last 12 months
- Micah Chen - $1.06M of WLDN open-market activity in the last 12 months
- Creighton K. Early - $905K of WLDN open-market activity in the last 12 months
- Steven A. Cohen - $782K of WLDN open-market activity in the last 12 months
- Dennis V. McGinn - $776K of WLDN open-market activity in the last 12 months
- Cynthia Downes - $302K of WLDN open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Motor Corp/ Toyota
- TPG GP A, LLC
- Chrysler Retirees Medical Benefits Plan Uaw
- Uber Technologies, Inc
- UNIVERSITY OF TEXAS/TEXAS AM INVESTMENT MANAGEMENT CO
- VAN ECK ASSOCIATES CORP
- Weegen Felice Isabel Verduyn-Van
- Viking Cake BR, LLC
Frequently Asked Questions
Who is Thomas Donald Brisbin?
Thomas Donald Brisbin is a corporate insider at Willdan Group, Inc. (WLDN). Brisbin has reported 8 insider filings with the SEC since 2024. The most recent filing was in June 2026.…
How many SEC Form 4 filings has Thomas Donald Brisbin submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Thomas Donald Brisbin been buying or selling stock?
Recorded transactions: 0 open-market purchases and 24 open-market sales ($42.47M) across all tracked filings.
Where can I see all of Thomas Donald Brisbin's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live Thomas Donald Brisbin profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.