Comparable stake leader
Divisadero Street Capital Management, LP
SEC ownership of Willdan Group, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001370450.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
16 Sep 2026
- Public ticker
- WLDN on Nasdaq
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Divisadero Street Capital Management, LP
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Divisadero Street Capital Management, LP
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
16 Sep 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001370450
- Issuer location
- Anaheim, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Willdan Group, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Divisadero Street Capital...
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
16 Sep 2026
13D/G
13F
3/4/5
Lead comparable stake: 8.9%
13D/G row: Divisadero Street Capital Management, LP
Showing 1-8 of 50 holder rows.
Quick read
Divisadero Street Capital Management, LP leads the comparable SEC ownership view at 8.9%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Divisadero Street Capital Management, LP's linked filing trail.
Comparable ownership
Top 5
Divisadero Street Capital Managem...
8.9%
BlackRock, Inc.
8%
Michael A. Bieber
1.6%
Thomas D. Brisbin
0.79%
Creighton K. Early
0.52%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Divisadero Street Capital Management, LP |
13D/G
13F
Company
|
8.9%
|
$112,506,576
1,339,364 shares
|
$0 | 12 May 2026 |
| BlackRock, Inc. |
13F
13D/G
Company
|
8%
from 13D/G
|
$113,795,079
1,438,623 shares
|
— | 30 Jun 2026 |
| Michael A. Bieber |
3/4/5
PRESIDENT AND CEO, Director
|
1.6%
|
$23,390,473
249,525 shares
|
-$6,115,879 | 14 May 2026 |
| Thomas D. Brisbin |
3/4/5
Director
|
0.79%
|
$9,438,370
119,322 shares
|
-$5,871,381 | 16 Sep 2026 |
| Creighton K. Early |
3/4/5
EXECUTIVE VP AND CFO
|
0.52%
|
$8,154,310
78,664 shares
|
— | 25 Mar 2026 |
| Steven A. Cohen |
3/4/5
Director
|
0.15%
|
$1,691,210
22,090 shares
|
-$490,920 | 17 Jun 2026 |
| Mohammad Shahidehpour |
3/4/5
Director
|
0.1%
|
$1,208,805
15,789 shares
|
— | 17 Jun 2026 |
| Dennis V McGinn |
3/4/5
Director
|
0.08%
|
$962,435
12,571 shares
|
— | 17 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$14,314,103.
Buys
$0
Insiders: 0
Sells
$14,314,103
Insiders: 5
Net
-$14,314,103
Shares: -157,066
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 157,066
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 67,101 | $0 | $5,871,381 | -$5,871,381 |
| 3-6 | 0 | 66,667 | $0 | $6,115,879 | -$6,115,879 |
| 6-9 | 0 | 6,000 | $0 | $490,920 | -$490,920 |
| 9-12 | 0 | 17,298 | $0 | $1,835,923 | -$1,835,923 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-18 of 18 reporting-owner rows connected to Willdan Group, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
18
Largest Forms 3/4/5 holder
Forager Fund, L.P.
Net 12M change
-$12,478,180
Latest report
16 Sep 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Forager Fund, L.P. | 10%+ Owner | $37,643,831 | Mixed | 09 Jul 2024 | ||
| Michael A. Bieber | PRESIDENT AND CEO, Director | $23,390,473 | -$6,115,879 | -21% | Filing P/S | 14 May 2026 |
| Thomas D. Brisbin | Director | $9,438,370 | -$5,871,381 | -38% | Median | 16 Sep 2026 |
| Creighton K. Early | Executive Vp And Cfo | $8,154,310 | Mixed | 25 Mar 2026 | ||
| Micah Chen | Executive Vp & General Counsel | $5,188,183 | Mixed | 25 Mar 2026 | ||
| Keith Renken | Director | $3,500,484 | Mixed | 07 Jun 2023 | ||
| Keith W. Renken | Director | $3,411,935 | Mixed | 09 Jun 2022 | ||
| Raymond W. Holdsworth Jr. | Director | $2,485,957 | Mixed | 09 Jun 2021 | ||
| Douglas James McEachern | Director | $2,474,668 | Mixed | 09 Jun 2021 | ||
| Steven A. Cohen | Director | $1,691,210 | -$490,920 | -22% | Mixed | 17 Jun 2026 |
| Daniel Chow | Chief Operating Officer | $1,502,995 | Mixed | 09 Jun 2021 | ||
| Mohammad Shahidehpour | Director | $1,208,805 | Mixed | 17 Jun 2026 | ||
| Dennis V McGinn | Director | $962,435 | Mixed | 17 Jun 2026 | ||
| Wanda Kay Reder | Director | $912,365 | Mixed | 17 Jun 2026 | ||
| Cynthia A. Downes | Director | $777,084 | Mixed | 17 Jun 2026 | ||
| Paul Milton Whitelaw | Svp, Business Development | $630,665 | Mixed | 28 Mar 2022 | ||
| Adam C. Procell | Chief Strategy Officer | $432,003 | Mixed | 07 Sep 2021 | ||
| Debra Coy | Director | $254,089 | Mixed | 09 Jun 2021 |
Recent insider transactions for Willdan Group, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Thomas D. Brisbin | WLDN | Common Stock | Options Exercise | 23.4% | 22,635 | 119,322 | 16 Sep 2026 | Direct | ||
| Thomas D. Brisbin | WLDN | Stock Options (Right to Buy) | Options Exercise | -100% | -22,635 | 0 | 16 Sep 2026 | Direct | ||
| Thomas D. Brisbin | WLDN | Common Stock | Sale | -4.83% | $389,254 | $79.36 | -4,905 | 96,687 | 15 Sep 2026 | Direct |
| Thomas D. Brisbin | WLDN | Common Stock | Options Exercise | 5.07% | 4,905 | 101,592 | 15 Sep 2026 | Direct | ||
| Thomas D. Brisbin | WLDN | Stock Options (Right to Buy) | Options Exercise | -17.8% | -4,905 | 22,635 | 15 Sep 2026 | Direct | ||
| Thomas D. Brisbin | WLDN | Common Stock | Sale | -3.43% | $303,285 | $88.19 | -3,439 | 96,687 | 08 Sep 2026 | Direct |
| Thomas D. Brisbin | WLDN | Common Stock | Options Exercise | 3.56% | 3,439 | 100,126 | 08 Sep 2026 | Direct | ||
| Thomas D. Brisbin | WLDN | Stock Options (Right to Buy) | Options Exercise | -11.1% | -3,439 | 27,540 | 08 Sep 2026 | Direct | ||
| Thomas D. Brisbin | WLDN | Common Stock | Sale | -37.8% | $5,178,842 | $88.14 | -58,757 | 96,687 | 03 Sep 2026 | Direct |
| Thomas D. Brisbin | WLDN | Common Stock | Options Exercise | 60.8% | 58,757 | 155,444 | 03 Sep 2026 | Direct | ||
| Thomas D. Brisbin | WLDN | Stock Options (Right to Buy) | Options Exercise | -65.5% | -58,727 | 30,979 | 03 Sep 2026 | Direct | ||
| Mohammad Shahidehpour | WLDN | Common Stock | Award | 8.53% | 1,241 | 15,789 | 17 Jun 2026 | Direct | ||
| Cynthia A. Downes | WLDN | Common Stock | Award | 13.9% | 1,241 | 10,150 | 17 Jun 2026 | Direct | ||
| Wanda Kay Reder | WLDN | Common Stock | Award | 11.6% | 1,241 | 11,917 | 17 Jun 2026 | Direct | ||
| Dennis V McGinn | WLDN | Common Stock | Award | 11% | 1,241 | 12,571 | 17 Jun 2026 | Direct | ||
| Steven A. Cohen | WLDN | Common Stock | Award | 5.95% | 1,241 | 22,090 | 17 Jun 2026 | Direct | ||
| Thomas D. Brisbin | WLDN | Common Stock | Award | 1.3% | 1,241 | 96,687 | 17 Jun 2026 | Direct | ||
| Michael A. Bieber | WLDN | Common Stock | Sale | -18.5% | $5,190,212 | $91.58 | -56,676 | 249,525 | 14 May 2026 | Direct |
| Michael A. Bieber | WLDN | Common Stock | Options Exercise | 22.7% | 56,676 | 306,201 | 14 May 2026 | Direct | ||
| Michael A. Bieber | WLDN | Stock Options (Right to Buy) | Options Exercise | -100% | -56,676 | 0 | 14 May 2026 | Direct | ||
| Michael A. Bieber | WLDN | Common Stock | Sale | -3.85% | $925,666 | $92.65 | -9,991 | 249,525 | 13 May 2026 | Direct |
| Michael A. Bieber | WLDN | Common Stock | Options Exercise | 4% | 9,991 | 259,516 | 13 May 2026 | Direct | ||
| Michael A. Bieber | WLDN | Stock Options (Right to Buy) | Options Exercise | -20% | -9,991 | 40,009 | 13 May 2026 | Direct | ||
| Micah Chen | WLDN | Common Stock | Tax liability | -3.21% | -1,660 | 50,050 | 25 Mar 2026 | Direct | ||
| Micah Chen | WLDN | Common Stock | Award | 7.89% | 3,780 | 51,710 | 25 Mar 2026 | Direct | ||
| Michael A. Bieber | WLDN | Common Stock | Tax liability | -2.52% | -6,444 | 249,525 | 25 Mar 2026 | Direct | ||
| Michael A. Bieber | WLDN | Common Stock | Award | 6.56% | 15,750 | 255,969 | 25 Mar 2026 | Direct | ||
| Creighton K. Early | WLDN | Common Stock | Tax liability | -2.65% | -2,142 | 78,664 | 25 Mar 2026 | Direct | ||
| Creighton K. Early | WLDN | Common Stock | Award | 4.91% | 3,780 | 80,806 | 25 Mar 2026 | Direct | ||
| Micah Chen | WLDN | Common Stock | Tax liability | -1.27% | -615 | 47,930 | 20 Mar 2026 | Direct | ||
| Michael A. Bieber | WLDN | Common Stock | Tax liability | -0.98% | -2,387 | 240,219 | 20 Mar 2026 | Direct | ||
| Creighton K. Early | WLDN | Common Stock | Tax liability | -1.02% | -794 | 77,026 | 20 Mar 2026 | Direct | ||
| Michael A. Bieber | WLDN | Common Stock | Tax liability | -1.07% | -2,625 | 242,606 | 17 Mar 2026 | Direct | ||
| Micah Chen | WLDN | Common Stock | Tax liability | -1.37% | -676 | 48,545 | 17 Mar 2026 | Direct | ||
| Creighton K. Early | WLDN | Common Stock | Tax liability | -1.11% | -873 | 77,820 | 17 Mar 2026 | Direct | ||
| Micah Chen | WLDN | Common Stock | Tax liability | -3.58% | -1,826 | 49,221 | 16 Mar 2026 | Direct | ||
| Micah Chen | WLDN | Common Stock | Award | 8.87% | 4,158 | 51,047 | 16 Mar 2026 | Direct | ||
| Michael A. Bieber | WLDN | Common Stock | Tax liability | -2.81% | -7,090 | 245,231 | 16 Mar 2026 | Direct | ||
| Michael A. Bieber | WLDN | Common Stock | Award | 7.37% | 17,326 | 252,321 | 16 Mar 2026 | Direct | ||
| Creighton K. Early | WLDN | Common Stock | Tax liability | -2.91% | -2,356 | 78,693 | 16 Mar 2026 | Direct | ||
| Creighton K. Early | WLDN | Common Stock | Award | 5.41% | 4,158 | 81,049 | 16 Mar 2026 | Direct | ||
| Micah Chen | WLDN | Common Stock | Tax liability | -3.57% | -1,738 | 46,889 | 11 Mar 2026 | Direct | ||
| Micah Chen | WLDN | Common Stock | Award | 8.87% | 3,960 | 48,627 | 11 Mar 2026 | Direct | ||
| Thomas D. Brisbin | WLDN | Common Stock | Award | 35% | 24,750 | 95,446 | 11 Mar 2026 | Direct | ||
| Michael A. Bieber | WLDN | Common Stock | Tax liability | -3.17% | -7,697 | 234,995 | 11 Mar 2026 | Direct | ||
| Michael A. Bieber | WLDN | Common Stock | Award | 8.4% | 18,810 | 242,692 | 11 Mar 2026 | Direct | ||
| Creighton K. Early | WLDN | Common Stock | Tax liability | -2.84% | -2,244 | 76,891 | 11 Mar 2026 | Direct | ||
| Creighton K. Early | WLDN | Common Stock | Award | 5.27% | 3,960 | 79,135 | 11 Mar 2026 | Direct | ||
| Micah Chen | WLDN | Common Stock | Tax liability | -0.91% | -410 | 44,667 | 09 Mar 2026 | Direct | ||
| Michael A. Bieber | WLDN | Common Stock | Tax liability | -0.8% | -1,814 | 223,882 | 09 Mar 2026 | Direct |
* marks a reported price that did not pass the local price check.