Willdan Group, Inc. (WLDN) Insider Trading
Directors, officers and holders of more than 10% of WLDN report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 50 most recent of 171 transactions on file: 0 with code P, 9 with code S and 41 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 16, 2026 | Brisbin Thomas Donald | Director | M Exercise | 22,635 | $16.27 | $368,271 |
| Sep 16, 2026 | Brisbin Thomas Donald | Director | M Exercise | 22,635 | Not measured | Not measured |
| Sep 15, 2026 | Brisbin Thomas Donald | Director | M Exercise | 4,905 | Not measured | Not measured |
| Sep 15, 2026 | Brisbin Thomas Donald | Director | M Exercise | 4,905 | $16.27 | $79,804 |
| Sep 15, 2026 | Brisbin Thomas Donald | Director | S Sale | 900 | $80.91 | $72,819 |
| Sep 15, 2026 | Brisbin Thomas Donald | Director | S Sale | 4,005 | $79.01 | $316,435 |
| Sep 8, 2026 | Brisbin Thomas Donald | Director | M Exercise | 3,439 | $16.27 | $55,953 |
| Sep 8, 2026 | Brisbin Thomas Donald | Director | S Sale | 3,439 | $88.19 | $303,285 |
| Sep 8, 2026 | Brisbin Thomas Donald | Director | M Exercise | 3,439 | Not measured | Not measured |
| Sep 3, 2026 | Brisbin Thomas Donald | Director | M Exercise | 58,757 | $16.27 | $955,976 |
| Sep 3, 2026 | Brisbin Thomas Donald | Director | S Sale | 58,757 | $88.14 | $5,178,842 |
| Sep 3, 2026 | Brisbin Thomas Donald | Director | M Exercise | 58,727 | Not measured | Not measured |
| Jun 17, 2026 | Shahidehpour Mohammad | Director | A Award | 1,241 | Not measured | Not measured |
| Jun 17, 2026 | Downes Cynthia | Director | A Award | 1,241 | Not measured | Not measured |
| Jun 17, 2026 | McGinn Dennis V | Director | A Award | 1,241 | Not measured | Not measured |
| Jun 17, 2026 | REDER WANDA KAY | Director | A Award | 1,241 | Not measured | Not measured |
| Jun 17, 2026 | Brisbin Thomas Donald | Director | A Award | 1,241 | Not measured | Not measured |
| Jun 17, 2026 | Cohen Steven A | Director | A Award | 1,241 | Not measured | Not measured |
| May 14, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | M Exercise | 16,667 | Not measured | Not measured |
| May 14, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | S Sale | 25,429 | $90.88 | $2,310,988 |
| May 14, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | S Sale | 276 | $93.74 | $25,872 |
| May 14, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | S Sale | 7,956 | $92.65 | $737,123 |
| May 14, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | S Sale | 23,015 | $91.95 | $2,116,229 |
| May 14, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | M Exercise | 16,667 | $28.19 | $469,843 |
| May 14, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | M Exercise | 40,009 | $16.27 | $650,946 |
| May 14, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | M Exercise | 40,009 | Not measured | Not measured |
| May 13, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | M Exercise | 9,991 | $16.27 | $162,554 |
| May 13, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | M Exercise | 9,991 | Not measured | Not measured |
| May 13, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | S Sale | 9,991 | $92.65 | $925,666 |
| Mar 25, 2026 | CHEN MICAH | EXECUTIVE VP & GENERAL COUNSEL | F Tax Payment | 1,660 | $82.80 | $137,448 |
| Mar 25, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | A Award | 15,750 | Not measured | Not measured |
| Mar 25, 2026 | CHEN MICAH | EXECUTIVE VP & GENERAL COUNSEL | A Award | 3,780 | Not measured | Not measured |
| Mar 25, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | F Tax Payment | 6,444 | $82.80 | $533,563 |
| Mar 25, 2026 | EARLY CREIGHTON K | EXECUTIVE VP AND CFO | A Award | 3,780 | Not measured | Not measured |
| Mar 25, 2026 | EARLY CREIGHTON K | EXECUTIVE VP AND CFO | F Tax Payment | 2,142 | $82.80 | $177,358 |
| Mar 20, 2026 | EARLY CREIGHTON K | EXECUTIVE VP AND CFO | F Tax Payment | 794 | $75.52 | $59,963 |
| Mar 20, 2026 | CHEN MICAH | EXECUTIVE VP & GENERAL COUNSEL | F Tax Payment | 615 | $75.52 | $46,445 |
| Mar 20, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | F Tax Payment | 2,387 | $75.52 | $180,266 |
| Mar 17, 2026 | EARLY CREIGHTON K | EXECUTIVE VP AND CFO | F Tax Payment | 873 | $78.29 | $68,347 |
| Mar 17, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | F Tax Payment | 2,625 | $78.29 | $205,511 |
| Mar 17, 2026 | CHEN MICAH | EXECUTIVE VP & GENERAL COUNSEL | F Tax Payment | 676 | $78.29 | $52,924 |
| Mar 16, 2026 | CHEN MICAH | EXECUTIVE VP & GENERAL COUNSEL | A Award | 4,158 | Not measured | Not measured |
| Mar 16, 2026 | CHEN MICAH | EXECUTIVE VP & GENERAL COUNSEL | F Tax Payment | 1,826 | $78.61 | $143,542 |
| Mar 16, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | A Award | 17,326 | Not measured | Not measured |
| Mar 16, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | F Tax Payment | 7,090 | $78.61 | $557,345 |
| Mar 16, 2026 | EARLY CREIGHTON K | EXECUTIVE VP AND CFO | A Award | 4,158 | Not measured | Not measured |
| Mar 16, 2026 | EARLY CREIGHTON K | EXECUTIVE VP AND CFO | F Tax Payment | 2,356 | $78.61 | $185,205 |
| Mar 11, 2026 | EARLY CREIGHTON K | EXECUTIVE VP AND CFO | F Tax Payment | 2,244 | $83.98 | $188,451 |
| Mar 11, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | A Award | 18,810 | Not measured | Not measured |
| Mar 11, 2026 | BIEBER MICHAEL A | PRESIDENT AND CEO | F Tax Payment | 7,697 | $83.98 | $646,394 |
The full Form 4 history is on the WLDN company page (Insider Trades card, View all).
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.