BIEBER MICHAEL A (CIK 1270606) reported 29 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-15). Recent activity: Buy WLDN (40,009 shares), Buy WLDN (16,667 shares), Sell WLDN (25,429 shares), Sell WLDN (23,015 shares), Sell WLDN (7,956 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-15 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Buy | 40,009 | $650,946 |
| 2026-05-15 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Buy | 16,667 | $469,843 |
| 2026-05-15 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Sell | 25,429 | $2.3M |
| 2026-05-15 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Sell | 23,015 | $2.1M |
| 2026-05-15 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Sell | 7,956 | $737,123 |
| 2026-05-15 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Sell | 276 | $25,872 |
| 2026-05-14 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Buy | 9,991 | $162,554 |
| 2026-05-14 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Sell | 9,991 | $925,666 |
| 2026-03-26 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Buy | 15,750 | $0 |
| 2026-03-26 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Sell | 6,444 | $533,563 |
| 2026-03-23 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Sell | 2,387 | $180,266 |
| 2026-03-19 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Sell | 2,625 | $205,511 |
| 2026-03-17 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Buy | 17,326 | $0 |
| 2026-03-17 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Sell | 7,090 | $557,345 |
| 2026-03-12 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Buy | 18,810 | $0 |
| 2026-03-12 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Sell | 7,697 | $646,394 |
| 2026-03-11 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Sell | 1,814 | $150,526 |
| 2026-03-05 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Buy | 18,000 | $0 |
| 2025-08-20 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Buy | 12,963 | $0 |
| 2025-08-20 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Sell | 6,788 | $743,490 |
| 2025-05-20 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Buy | 25,000 | $347,750 |
| 2025-05-20 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Sell | 25,000 | $1.2M |
| 2025-03-26 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Buy | 15,750 | $0 |
| 2025-03-26 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Sell | 8,246 | $350,702 |
| 2025-03-24 | Willdan Group, Inc. (WLDN) | PRESIDENT AND CEO | Sell | 3,054 | $131,505 |
Source: SEC Form 4 filings · as of 2026-05-15