Willdan Group, Inc. SEC filings WLDN
Willdan Group, Inc. has 1,002 filings in SEC EDGAR's recent list, going back to Aug 13, 2009. Its latest annual report, Form ARS, was filed on Apr 24, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 7, 2026, covering the quarter ended Jul 3, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations). The company's fiscal year ends on January 1.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Sep 17, 2026 | Sep 16, 2026 |
| 4 | Insider transaction | Sep 16, 2026 | Sep 15, 2026 |
| 144 | Notice of proposed sale | Sep 15, 2026 | — |
| 4 | Insider transaction | Sep 9, 2026 | Sep 8, 2026 |
| 144 | Notice of proposed sale | Sep 8, 2026 | — |
| 4 | Insider transaction | Sep 4, 2026 | Sep 3, 2026 |
| 144 | Notice of proposed sale | Sep 3, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 30, 2026 | — |
| 4 | Insider transaction | Jun 18, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 18, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 18, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 18, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 18, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 18, 2026 | Jun 17, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 19, 2026 | — |
| 4 | Insider transaction | May 15, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 14, 2026 | May 13, 2026 |
| 144 | Notice of proposed sale | May 14, 2026 | — |
| 144 | Notice of proposed sale | May 13, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 4 | Insider transaction | Mar 26, 2026 | Mar 25, 2026 |
| 4 | Insider transaction | Mar 26, 2026 | Mar 25, 2026 |
| 4 | Insider transaction | Mar 26, 2026 | Mar 25, 2026 |
| 4 | Insider transaction | Mar 23, 2026 | Mar 20, 2026 |
| 4 | Insider transaction | Mar 23, 2026 | Mar 20, 2026 |
| 4 | Insider transaction | Mar 23, 2026 | Mar 20, 2026 |
| 4 | Insider transaction | Mar 19, 2026 | Mar 17, 2026 |
| 4 | Insider transaction | Mar 19, 2026 | Mar 17, 2026 |
| 4 | Insider transaction | Mar 19, 2026 | Mar 17, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 16, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 16, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 16, 2026 |
| 4 | Insider transaction | Mar 12, 2026 | Mar 11, 2026 |
| 4 | Insider transaction | Mar 12, 2026 | Mar 11, 2026 |
| 4 | Insider transaction | Mar 12, 2026 | Mar 11, 2026 |
| 4 | Insider transaction | Mar 12, 2026 | Mar 11, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Mar 9, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Mar 9, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Mar 9, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 144 | Notice of proposed sale | Mar 6, 2026 | — |
| 4 | Insider transaction | Mar 5, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 3, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 31, 2025 | — |
| 4 | Insider transaction | Sep 22, 2025 | Sep 18, 2025 |
| 4 | Insider transaction | Sep 22, 2025 | Sep 18, 2025 |
| 144 | Notice of proposed sale | Sep 18, 2025 | — |
| 144 | Notice of proposed sale | Sep 18, 2025 | — |
| 4 | Insider transaction | Aug 26, 2025 | Aug 25, 2025 |
| 4 | Insider transaction | Aug 26, 2025 | Aug 22, 2025 |
| 144 | Notice of proposed sale | Aug 25, 2025 | — |
| 4 | Insider transaction | Aug 25, 2025 | Aug 21, 2025 |
| 4 | Insider transaction | Aug 21, 2025 | Aug 20, 2025 |
| 4 | Insider transaction | Aug 20, 2025 | Aug 18, 2025 |
| 4 | Insider transaction | Aug 20, 2025 | Aug 18, 2025 |
| 4 | Insider transaction | Aug 20, 2025 | Aug 18, 2025 |
| 4 | Insider transaction | Aug 20, 2025 | Aug 18, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 14, 2025 |
| 144 | Notice of proposed sale | Aug 18, 2025 | — |
| 4 | Insider transaction | Aug 15, 2025 | Aug 13, 2025 |
| 144 | Notice of proposed sale | Aug 15, 2025 | — |
| 144 | Notice of proposed sale | Aug 14, 2025 | — |
| 4 | Insider transaction | Aug 14, 2025 | Aug 12, 2025 |
| 144 | Notice of proposed sale | Aug 13, 2025 | — |
| 144 | Notice of proposed sale | Aug 12, 2025 | — |
| 4 | Insider transaction | Jun 12, 2025 | Jun 11, 2025 |
| 4 | Insider transaction | Jun 12, 2025 | Jun 11, 2025 |
| 4 | Insider transaction | Jun 12, 2025 | Jun 11, 2025 |
| 4 | Insider transaction | Jun 12, 2025 | Jun 11, 2025 |
| 4 | Insider transaction | Jun 12, 2025 | Jun 11, 2025 |
| 4 | Insider transaction | Jun 12, 2025 | Jun 11, 2025 |
| 4 | Insider transaction | May 29, 2025 | May 28, 2025 |
| 4 | Insider transaction | May 29, 2025 | May 27, 2025 |
| 4 | Insider transaction | May 28, 2025 | May 23, 2025 |
| 144 | Notice of proposed sale | May 28, 2025 | — |
| 4 | Insider transaction | May 27, 2025 | May 22, 2025 |
| 144 | Notice of proposed sale | May 27, 2025 | — |
| 4 | Insider transaction | May 21, 2025 | May 19, 2025 |
| 4 | Insider transaction | May 20, 2025 | May 16, 2025 |
| 4 | Insider transaction | May 20, 2025 | May 16, 2025 |
| 4 | Insider transaction | May 20, 2025 | May 16, 2025 |
| 144 | Notice of proposed sale | May 20, 2025 | — |
| 144 | Notice of proposed sale | May 19, 2025 | — |
| 144 | Notice of proposed sale | May 16, 2025 | — |
| 144 | Notice of proposed sale | May 16, 2025 | — |
| 144 | Notice of proposed sale | May 15, 2025 | — |
| 144 | Notice of proposed sale | May 13, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 17, 2025 | — |
| 4 | Insider transaction | Mar 26, 2025 | Mar 24, 2025 |
| 4 | Insider transaction | Mar 26, 2025 | Mar 24, 2025 |
| 4 | Insider transaction | Mar 26, 2025 | Mar 24, 2025 |
| 4 | Insider transaction | Mar 24, 2025 | Mar 20, 2025 |
| 4 | Insider transaction | Mar 24, 2025 | Mar 20, 2025 |
| 4 | Insider transaction | Mar 24, 2025 | Mar 20, 2025 |
| 144 | Notice of proposed sale | Mar 21, 2025 | — |
| 4 | Insider transaction | Mar 19, 2025 | Mar 17, 2025 |
| 4 | Insider transaction | Mar 19, 2025 | Mar 17, 2025 |
| 4 | Insider transaction | Mar 19, 2025 | Mar 17, 2025 |
| 4 | Insider transaction | Mar 13, 2025 | Mar 12, 2025 |
| 4 | Insider transaction | Mar 12, 2025 | Mar 11, 2025 |
| 4 | Insider transaction | Mar 12, 2025 | Mar 11, 2025 |
| 4 | Insider transaction | Mar 12, 2025 | Mar 11, 2025 |
| 4 | Insider transaction | Mar 12, 2025 | Mar 11, 2025 |
| 144 | Notice of proposed sale | Mar 12, 2025 | — |
| 4 | Insider transaction | Mar 11, 2025 | Mar 7, 2025 |
| 4 | Insider transaction | Mar 11, 2025 | Mar 7, 2025 |
| 4 | Insider transaction | Mar 11, 2025 | Mar 7, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 5, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 8, 2025 | — |
| 4 | Insider transaction | Dec 16, 2024 | Nov 21, 2024 |
| 4 | Insider transaction | Dec 10, 2024 | Dec 6, 2024 |
| 144 | Notice of proposed sale | Dec 6, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 12, 2024 | — |
| 4 | Insider transaction | Nov 12, 2024 | Nov 11, 2024 |
| 144 | Notice of proposed sale | Nov 12, 2024 | — |
| 4 | Insider transaction | Nov 8, 2024 | Nov 6, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 7, 2024 | — |
| 144 | Notice of proposed sale | Nov 6, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 4, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 3, 2024 | — |
| 4 | Insider transaction | Aug 21, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Aug 21, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Aug 21, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Aug 21, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Aug 14, 2024 | Aug 12, 2024 |
| 4 | Insider transaction | Aug 12, 2024 | Aug 8, 2024 |
| 144 | Notice of proposed sale | Aug 12, 2024 | — |
| 144 | Notice of proposed sale | Aug 9, 2024 | — |
| 4 | Insider transaction | Aug 8, 2024 | Aug 7, 2024 |
| 4 | Insider transaction | Aug 8, 2024 | Aug 6, 2024 |
| 144 | Notice of proposed sale | Aug 8, 2024 | — |
| 144 | Notice of proposed sale | Aug 7, 2024 | — |
| 144 | Notice of proposed sale | Aug 7, 2024 | — |
| 144 | Notice of proposed sale | Aug 7, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Jul 15, 2024 | — |
| 4 | Insider transaction | Jul 11, 2024 | Jul 9, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Jul 11, 2024 | — |
| 4/A | Primary document | Jun 25, 2024 | Jun 20, 2024 |
| 4 | Insider transaction | Jun 24, 2024 | Jun 20, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 14, 2024 |
| 4 | Insider transaction | Jun 14, 2024 | Jun 13, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 11, 2024 |
| 144 | Notice of proposed sale | Jun 13, 2024 | — |
| 4 | Insider transaction | Jun 13, 2024 | Jun 11, 2024 |
| 4 | Insider transaction | Jun 12, 2024 | Jun 10, 2024 |
| 4 | Insider transaction | Jun 12, 2024 | Jun 10, 2024 |
| 144 | Notice of proposed sale | Jun 12, 2024 | — |
| 144 | Notice of proposed sale | Jun 12, 2024 | — |
| 144 | Notice of proposed sale | Jun 11, 2024 | — |
| 144 | Notice of proposed sale | Jun 10, 2024 | — |
| 4 | Insider transaction | Jun 10, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | May 30, 2024 | May 28, 2024 |
| 4 | Insider transaction | May 28, 2024 | May 24, 2024 |
| 4 | Insider transaction | May 23, 2024 | May 21, 2024 |
| 4 | Insider transaction | May 21, 2024 | May 20, 2024 |
| 4 | Insider transaction | May 20, 2024 | May 16, 2024 |
| 144 | Notice of proposed sale | May 16, 2024 | — |
| 4 | Insider transaction | May 16, 2024 | May 14, 2024 |
| 4 | Insider transaction | May 13, 2024 | May 9, 2024 |
| 4 | Insider transaction | May 8, 2024 | May 6, 2024 |
| 4 | Insider transaction | May 3, 2024 | May 1, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | May 3, 2024 | — |
| 4 | Insider transaction | Apr 10, 2024 | Mar 20, 2024 |
| 4/A | Primary document | Mar 28, 2024 | Mar 26, 2024 |
| 4 | Insider transaction | Mar 28, 2024 | Mar 26, 2024 |
| 4 | Insider transaction | Mar 22, 2024 | Mar 20, 2024 |
| 4 | Insider transaction | Mar 22, 2024 | Mar 20, 2024 |
| 4 | Insider transaction | Mar 22, 2024 | Mar 20, 2024 |
| 4 | Insider transaction | Mar 11, 2024 | Mar 7, 2024 |
| 4 | Insider transaction | Mar 11, 2024 | Mar 7, 2024 |
| 4 | Insider transaction | Mar 11, 2024 | Mar 7, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 29, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 24, 2024 | — |
| 4 | Insider transaction | Aug 28, 2023 | Aug 24, 2023 |
| 4 | Insider transaction | Aug 28, 2023 | Aug 24, 2023 |
| 4 | Insider transaction | Aug 28, 2023 | Aug 24, 2023 |
| 4 | Insider transaction | Aug 28, 2023 | Aug 24, 2023 |
| 4 | Insider transaction | Aug 24, 2023 | Aug 22, 2023 |
| 4 | Insider transaction | Aug 24, 2023 | Aug 22, 2023 |
| 4 | Insider transaction | Aug 24, 2023 | Aug 22, 2023 |
| 4 | Insider transaction | Aug 24, 2023 | Aug 22, 2023 |
| 4 | Insider transaction | Aug 22, 2023 | Aug 21, 2023 |
| 4 | Insider transaction | Aug 22, 2023 | Aug 21, 2023 |
| 4 | Insider transaction | Aug 22, 2023 | Aug 21, 2023 |
| 4 | Insider transaction | Aug 22, 2023 | Aug 21, 2023 |
| 4 | Insider transaction | Aug 7, 2023 | Aug 3, 2023 |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Services-Engineering Services (SIC 8711)
- Listed as
- WLDN (Nasdaq)
- Fiscal year ends
- January 1
- Incorporated in
- DE
- Headquarters
- Anaheim, CA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1370450
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.