Willdan Group, Inc. (WLDN) Insider Trading
Over the last 3 months, WLDN insiders made 0 open-market buys and 6 sales, a net sale of -$6.6M (SEC Form 4). Over the last 6 months, 216 institutions increased and 157 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
6
Net (3m)
-$6.6M
Insider trades by month Buys Sells
Mar
May
Aug
Sep
Mar
May
Context3-month price +15.6%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 15, 2026 | BIEBER MICHAEL Adirector, officer: PRESIDENT AND CEO | Option | 16,667 | $28.19 |
| May 15, 2026 | BIEBER MICHAEL Adirector, officer: PRESIDENT AND CEO | Sell | 25,429 | $90.88 |
| May 15, 2026 | BIEBER MICHAEL Adirector, officer: PRESIDENT AND CEO | Sell | 23,015 | $91.95 |
| May 15, 2026 | BIEBER MICHAEL Adirector, officer: PRESIDENT AND CEO | Sell | 7,956 | $92.65 |
| May 15, 2026 | BIEBER MICHAEL Adirector, officer: PRESIDENT AND CEO | Sell | 276 | $93.74 |
| May 15, 2026 | BIEBER MICHAEL Adirector, officer: PRESIDENT AND CEO | Option | 40,009 | $16.27 |
| May 14, 2026 | BIEBER MICHAEL Adirector, officer: PRESIDENT AND CEO | Sell | 9,991 | $92.65 |
| May 14, 2026 | BIEBER MICHAEL Adirector, officer: PRESIDENT AND CEO | Option | 9,991 | $16.27 |
| Mar 26, 2026 | BIEBER MICHAEL Adirector, officer: PRESIDENT AND CEO | Grant | 15,750 | — |
| Mar 26, 2026 | CHEN MICAHofficer: EXECUTIVE VP & GENERAL COUNSEL | Grant | 3,780 | — |
| Mar 26, 2026 | EARLY CREIGHTON Kofficer: EXECUTIVE VP AND CFO | Tax | 2,142 | $82.80 |
| Mar 26, 2026 | BIEBER MICHAEL Adirector, officer: PRESIDENT AND CEO | Tax | 6,444 | $82.80 |
| Mar 26, 2026 | CHEN MICAHofficer: EXECUTIVE VP & GENERAL COUNSEL | Tax | 1,660 | $82.80 |
| Mar 26, 2026 | EARLY CREIGHTON Kofficer: EXECUTIVE VP AND CFO | Grant | 3,780 | — |
| Mar 23, 2026 | BIEBER MICHAEL Adirector, officer: PRESIDENT AND CEO | Tax | 2,387 | $75.52 |
| Mar 23, 2026 | CHEN MICAHofficer: EXECUTIVE VP & GENERAL COUNSEL | Tax | 615 | $75.52 |
| Mar 23, 2026 | EARLY CREIGHTON Kofficer: EXECUTIVE VP AND CFO | Tax | 794 | $75.52 |
| Mar 19, 2026 | BIEBER MICHAEL Adirector, officer: PRESIDENT AND CEO | Tax | 2,625 | $78.29 |
| Mar 19, 2026 | CHEN MICAHofficer: EXECUTIVE VP & GENERAL COUNSEL | Tax | 676 | $78.29 |
| Mar 19, 2026 | EARLY CREIGHTON Kofficer: EXECUTIVE VP AND CFO | Tax | 873 | $78.29 |
| Mar 17, 2026 | EARLY CREIGHTON Kofficer: EXECUTIVE VP AND CFO | Tax | 2,356 | $78.61 |
| Mar 17, 2026 | EARLY CREIGHTON Kofficer: EXECUTIVE VP AND CFO | Grant | 4,158 | — |
| Mar 17, 2026 | BIEBER MICHAEL Adirector, officer: PRESIDENT AND CEO | Grant | 17,326 | — |
| Mar 17, 2026 | CHEN MICAHofficer: EXECUTIVE VP & GENERAL COUNSEL | Grant | 4,158 | — |
| Mar 17, 2026 | BIEBER MICHAEL Adirector, officer: PRESIDENT AND CEO | Tax | 7,090 | $78.61 |
| Mar 17, 2026 | CHEN MICAHofficer: EXECUTIVE VP & GENERAL COUNSEL | Tax | 1,826 | $78.61 |
| Mar 12, 2026 | EARLY CREIGHTON Kofficer: EXECUTIVE VP AND CFO | Tax | 2,244 | $83.98 |
| Mar 12, 2026 | EARLY CREIGHTON Kofficer: EXECUTIVE VP AND CFO | Grant | 3,960 | — |
| Mar 12, 2026 | BIEBER MICHAEL Adirector, officer: PRESIDENT AND CEO | Tax | 7,697 | $83.98 |
| Mar 12, 2026 | BIEBER MICHAEL Adirector, officer: PRESIDENT AND CEO | Grant | 18,810 | — |
Source: WLDN SEC Form 4 filings, latest May 15, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their WLDN positions over the last 6 months (SEC Form 13F).
Increased
216
New positions
99
Reduced
157
Sold out
97
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Increased | 1.3M | May 13, 2026 |
| BLACKROCK, INC. | Increased | 1.3M | Feb 12, 2026 |
| VANGUARD GROUP INC | Increased | 1.2M | Jan 29, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 613K | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 485K | May 8, 2026 |
| TWO SIGMA INVESTMENTS, LP | Increased | 468K | May 15, 2026 |
| WASATCH ADVISORS LP | Increased | 382K | Apr 21, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 354K | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 343K | Feb 9, 2026 |
| STATE STREET CORP | Increased | 315K | May 15, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Increased | 309K | May 7, 2026 |
| STATE STREET CORP | Increased | 306K | Feb 13, 2026 |
| DIVISADERO STREET CAPITAL MANAGEMENT, LP | Increased | 299K | Feb 17, 2026 |
| TWO SIGMA INVESTMENTS, LP | Reduced | 296K | Feb 17, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Increased | 287K | Feb 12, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.