Willdan Group, Inc.
WLDN- Exchange
- Nasdaq
- Industry
- Services-Engineering Services
- SEC CIK
- 0001370450
In the last 90 days, Willdan Group, Inc. insiders filed 0 open-market purchases and 3 sales; 245 institutions reported holding it in 13F filings for Q2 2026, worth $1.07B in total; no superinvestor holds it.
Holders of 5% or more of WLDN
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Willdan Group, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Divisadero Street Capital Management, LP | 13G | 8.90%1.34M shares | New | May 19, 20261 filing | May 19, 2026 | SEC |
| BlackRock, Inc. | 13G/A | 8.00%1.21M shares | +1.70 ppfrom 6.30% | Feb 5, 20253 filings | Jul 30, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
15 Schedule 13D and 13G filings on Willdan Group, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Jul 30, 202611:18 AM ET | BlackRock, Inc. | 13G/A | 8.00%1.21M shares | +1.70 ppfrom 6.30% | Jun 30, 2026 | SEC |
| May 19, 20268:03 PM ET | Divisadero Street Capital Management, LPand 4 others | 13G | 8.90%1.34M shares | New | May 12, 2026 | SEC |
| Mar 27, 20262:13 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −7.33 ppfrom 7.33%Below 5% | Mar 13, 2026 | SEC |
| Oct 31, 202511:42 AM ET | Vanguard Group Inc | 13G/A | 7.33%1.08M shares | – | Sep 30, 2025 | SEC |
| Apr 17, 20259:35 AM ET | BlackRock, Inc. | 13G/A | 6.30%913.9K shares | −1.70 ppfrom 8.00% | Mar 31, 2025 | SEC |
| Feb 5, 20251:23 PM ET | BlackRock, Inc. | 13G/A | 8.00%1.13M shares | – | Dec 31, 2024 | SEC |
| Jan 8, 20256:57 PM ET | Amundiand 1 other | 13G/A | 0.00%0 shares | –Below 5% | Dec 31, 2024 | SEC |
| Feb 16, 2021 | Forager Capital Management, LLC | 13GOld format | – | New | – | SEC |
| Feb 16, 2021 | Rice Hall James & Associates, LLC | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Handelsbanken Fonder AB | 13GOld format | – | New | – | SEC |
| Feb 12, 2021 | TimesSquare Capital Management, LLC | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2021 | William Blair Investment Management, LLC | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Invesco Ltd. | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Invesco Ltd. | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Willdan Group, Inc. shares.
No Form 144 notices for Willdan Group, Inc. are on file.