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 |
|---|---|---|---|
| 8-K |
Current report
Results of operations
|
Nov 5, 2026 | Nov 5, 2026 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, New debt, Regulation FD disclosure
|
Nov 5, 2026 | Oct 30, 2026 |
| 8-K |
Current report
Material agreement
|
Sep 23, 2026 | Sep 22, 2026 |
| 10-Q | Quarterly report | Aug 7, 2026 | Jul 3, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 2026 |
| S-8 | Employee stock plan registration | Jun 26, 2026 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 18, 2026 | Jun 17, 2026 |
| 10-Q | Quarterly report | May 8, 2026 | Apr 3, 2026 |
| 8-K |
Current report
Results of operations
|
May 7, 2026 | May 7, 2026 |
| ARS | Annual report to shareholders | Apr 24, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 24, 2026 | — |
| DEF 14A | Proxy statement | Apr 24, 2026 | Jun 17, 2026 |
| 10-K | Annual report | Feb 27, 2026 | Jan 2, 2026 |
| 8-K |
Current report
Results of operations
|
Feb 26, 2026 | Feb 26, 2026 |
| 10-Q | Quarterly report | Nov 7, 2025 | Oct 3, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2025 | Nov 6, 2025 |
| 10-Q | Quarterly report | Aug 8, 2025 | Jul 4, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2025 | Aug 7, 2025 |
| S-8 | Employee stock plan registration | Jun 27, 2025 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 13, 2025 | Jun 12, 2025 |
| 10-Q | Quarterly report | May 9, 2025 | Apr 4, 2025 |
| 8-K |
Current report
Results of operations
|
May 8, 2025 | May 8, 2025 |
| ARS | Annual report to shareholders | Apr 18, 2025 | Dec 27, 2024 |
| DEFA14A | Additional proxy material | Apr 18, 2025 | — |
| DEF 14A | Proxy statement | Apr 18, 2025 | Jun 12, 2025 |
| 10-K | Annual report | Mar 7, 2025 | Dec 27, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 6, 2025 | Mar 6, 2025 |
| 8-K |
Current report
Officer or director change
|
Nov 18, 2024 | Nov 13, 2024 |
| 10-Q | Quarterly report | Nov 1, 2024 | Sep 27, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 31, 2024 | Oct 31, 2024 |
| 10-Q | Quarterly report | Aug 2, 2024 | Jun 28, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 1, 2024 | Aug 1, 2024 |
| S-8 | Employee stock plan registration | Jun 28, 2024 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 14, 2024 | Jun 13, 2024 |
| 10-Q | Quarterly report | May 3, 2024 | Mar 29, 2024 |
| 8-K |
Current report
Results of operations
|
May 2, 2024 | May 2, 2024 |
| ARS | Annual report to shareholders | Apr 19, 2024 | Dec 29, 2023 |
| DEFA14A | Additional proxy material | Apr 19, 2024 | — |
| DEF 14A | Proxy statement | Apr 19, 2024 | Jun 13, 2024 |
| EFFECT | Filing | Mar 19, 2024 | — |
| CORRESP | Letter to the SEC | Mar 15, 2024 | — |
| UPLOAD | Letter from the SEC | Mar 14, 2024 | — |
| S-3 | Shelf registration | Mar 8, 2024 | — |
| 10-K | Annual report | Mar 8, 2024 | Dec 29, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 7, 2024 | Mar 5, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 7, 2024 | Mar 7, 2024 |
| 8-K |
Current report
Officer or director change
|
Feb 29, 2024 | Feb 28, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Dec 12, 2023 | Dec 8, 2023 |
| 10-Q | Quarterly report | Nov 3, 2023 | Sep 29, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2023 | Nov 2, 2023 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt, Change to shareholder rights, Regulation FD disclosure
|
Oct 5, 2023 | Sep 29, 2023 |
| 10-Q | Quarterly report | Aug 4, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 3, 2023 | Aug 3, 2023 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Jul 12, 2023 | Jul 7, 2023 |
| S-8 | Employee stock plan registration | Jun 30, 2023 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 9, 2023 | Jun 8, 2023 |
| 10-Q | Quarterly report | May 5, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 4, 2023 | May 4, 2023 |
| ARS | Annual report to shareholders | Apr 21, 2023 | Dec 30, 2022 |
| DEFA14A | Additional proxy material | Apr 21, 2023 | — |
| DEF 14A | Proxy statement | Apr 21, 2023 | — |
| 10-K | Annual report | Mar 10, 2023 | Dec 30, 2022 |
| 8-K |
Current report
Results of operations
|
Mar 9, 2023 | Mar 9, 2023 |
| 8-K |
Current report
Officer or director change
|
Jan 24, 2023 | Jan 19, 2023 |
| 10-Q | Quarterly report | Nov 4, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 3, 2022 | Nov 3, 2022 |
| 10-Q | Quarterly report | Aug 5, 2022 | Jul 1, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2022 | Aug 4, 2022 |
| S-8 | Employee stock plan registration | Jun 24, 2022 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 10, 2022 | Jun 9, 2022 |
| 10-Q | Quarterly report | May 6, 2022 | Apr 1, 2022 |
| 8-K |
Current report
Results of operations
|
May 5, 2022 | May 5, 2022 |
| DEFA14A | Additional proxy material | Apr 25, 2022 | — |
| DEF 14A | Proxy statement | Apr 25, 2022 | Jun 9, 2022 |
| 8-K |
Current report
Officer or director change
|
Apr 25, 2022 | Apr 19, 2022 |
| 10-K/A | Amended annual report | Mar 25, 2022 | Dec 31, 2021 |
| 10-K | Annual report | Mar 11, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Mar 10, 2022 | Mar 10, 2022 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Dec 6, 2021 | Dec 3, 2021 |
| 10-Q | Quarterly report | Nov 5, 2021 | Oct 1, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 4, 2021 | Nov 4, 2021 |
| 8-K |
Current report
Officer or director change
|
Oct 25, 2021 | Oct 19, 2021 |
| 10-Q | Quarterly report | Aug 6, 2021 | Jul 2, 2021 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Aug 5, 2021 | Aug 3, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2021 | Aug 5, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Jun 14, 2021 | Jun 10, 2021 |
| 10-Q | Quarterly report | May 7, 2021 | Apr 2, 2021 |
| 8-K |
Current report
Results of operations
|
May 6, 2021 | May 6, 2021 |
| 8-K |
Current report
Material agreement, New debt
|
May 3, 2021 | Apr 30, 2021 |
| DEFA14A | Additional proxy material | Apr 23, 2021 | — |
| DEF 14A | Proxy statement | Apr 23, 2021 | Jun 10, 2021 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Apr 16, 2021 | Apr 13, 2021 |
| EFFECT | Filing | Mar 29, 2021 | — |
| CORRESP | Letter to the SEC | Mar 25, 2021 | — |
| UPLOAD | Letter from the SEC | Mar 25, 2021 | — |
| S-3 | Shelf registration | Mar 19, 2021 | — |
| 10-K | Annual report | Mar 17, 2021 | Jan 1, 2021 |
| 8-K |
Current report
Results of operations
|
Mar 11, 2021 | Mar 11, 2021 |
| 10-Q | Quarterly report | Nov 6, 2020 | Oct 2, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2020 | Nov 5, 2020 |
| 10-Q | Quarterly report | Aug 7, 2020 | Jul 3, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2020 | Aug 6, 2020 |
| 8-K |
Current report
Shareholder vote results
|
Jun 15, 2020 | Jun 11, 2020 |
| 10-Q | Quarterly report | May 8, 2020 | Apr 3, 2020 |
| 8-K |
Current report
Results of operations
|
May 7, 2020 | May 7, 2020 |
| DEFA14A | Additional proxy material | Apr 17, 2020 | — |
| DEF 14A | Proxy statement | Apr 17, 2020 | Jun 11, 2020 |
| 8-K |
Current report
Results of operations, Bylaw or fiscal year change, Regulation FD disclosure
|
Apr 16, 2020 | Apr 13, 2020 |
| 10-K | Annual report | Mar 6, 2020 | Dec 27, 2019 |
| 8-K |
Current report
Results of operations
|
Mar 5, 2020 | Mar 5, 2020 |
| SEC STAFF LETTER | Filing | Feb 27, 2020 | — |
| SEC STAFF LETTER | Filing | Feb 6, 2020 | — |
| 10-Q | Quarterly report | Nov 1, 2019 | Sep 27, 2019 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Oct 30, 2019 | Oct 30, 2019 |
| 8-K |
Current report
Officer or director change
|
Sep 10, 2019 | Sep 5, 2019 |
| 10-Q | Quarterly report | Aug 2, 2019 | Jun 28, 2019 |
| 8-K |
Current report
Results of operations
|
Aug 1, 2019 | Aug 1, 2019 |
| 8-K |
Current report
Material agreement, New debt
|
Jul 2, 2019 | Jun 26, 2019 |
| S-8 | Employee stock plan registration | Jun 28, 2019 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 17, 2019 | Jun 13, 2019 |
| 10-Q | Quarterly report | May 6, 2019 | Mar 29, 2019 |
| 8-K |
Current report
Results of operations
|
May 2, 2019 | May 2, 2019 |
| DEFA14A | Additional proxy material | Apr 26, 2019 | — |
| DEF 14A | Proxy statement | Apr 26, 2019 | Jun 13, 2019 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Apr 15, 2019 | Apr 9, 2019 |
| 10-K | Annual report | Mar 8, 2019 | Dec 28, 2018 |
| 8-K |
Current report
Results of operations
|
Mar 7, 2019 | Mar 7, 2019 |
| 8-K/A | Amended current report | Jan 23, 2019 | Nov 9, 2018 |
| 8-K |
Current report
Acquisition or sale of assets, New debt, Regulation FD disclosure
|
Nov 9, 2018 | Nov 9, 2018 |
| 10-Q | Quarterly report | Nov 2, 2018 | Sep 28, 2018 |
| 8-K |
Current report
Results of operations
|
Nov 1, 2018 | Nov 1, 2018 |
| 8-K |
Current report
Material agreement, Other events
|
Oct 9, 2018 | Oct 4, 2018 |
| 424B5 | Prospectus supplement | Oct 5, 2018 | — |
| FWP | Free writing prospectus | Oct 4, 2018 | — |
| 424B5 | Prospectus supplement | Oct 3, 2018 | — |
| 8-K |
Current report
Material agreement, Agreement ended, New debt, Change to shareholder rights, Regulation FD disclosure, Other events
|
Oct 3, 2018 | Oct 1, 2018 |
| 10-Q | Quarterly report | Aug 3, 2018 | Jun 29, 2018 |
| 8-K |
Current report
Results of operations
|
Aug 2, 2018 | Aug 2, 2018 |
| 8-K |
Current report
Auditor change
|
Jul 17, 2018 | Jul 11, 2018 |
| 8-K |
Current report
Shareholder vote results
|
Jun 15, 2018 | Jun 14, 2018 |
| 10-Q | Quarterly report | May 4, 2018 | Mar 30, 2018 |
| 8-K |
Current report
Results of operations
|
May 3, 2018 | May 3, 2018 |
| DEFA14A | Additional proxy material | Apr 20, 2018 | — |
| DEF 14A | Proxy statement | Apr 20, 2018 | Jun 14, 2018 |
| 10-K | Annual report | Mar 9, 2018 | Dec 29, 2017 |
| 8-K |
Current report
Results of operations
|
Mar 8, 2018 | Mar 8, 2018 |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change, Regulation FD disclosure, Other events
|
Mar 8, 2018 | Mar 6, 2018 |
| EFFECT | Filing | Nov 17, 2017 | — |
| UPLOAD | Letter from the SEC | Nov 17, 2017 | — |
| CORRESP | Letter to the SEC | Nov 15, 2017 | — |
| S-3/A | Filing | Nov 3, 2017 | — |
| 10-Q | Quarterly report | Nov 3, 2017 | Sep 29, 2017 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2017 | Nov 2, 2017 |
| 8-K/A | Amended current report | Oct 13, 2017 | Jul 28, 2017 |
| CORRESP | Letter to the SEC | Sep 27, 2017 | — |
| CORRESP | Letter to the SEC | Sep 25, 2017 | — |
| S-3/A | Filing | Sep 21, 2017 | — |
| CORRESP | Letter to the SEC | Sep 14, 2017 | — |
| CORRESP | Letter to the SEC | Sep 12, 2017 | — |
| CT ORDER | Filing | Aug 29, 2017 | — |
| CORRESP | Letter to the SEC | Aug 25, 2017 | — |
| 10-Q | Quarterly report | Aug 4, 2017 | Jun 30, 2017 |
| 8-K |
Current report
Acquisition or sale of assets, Results of operations, Unregistered share sale, Regulation FD disclosure
|
Aug 3, 2017 | Jul 28, 2017 |
| UPLOAD | Letter from the SEC | Aug 3, 2017 | — |
| CORRESP | Letter to the SEC | Jul 25, 2017 | — |
| S-8 | Employee stock plan registration | Jun 30, 2017 | — |
| S-8 | Employee stock plan registration | Jun 30, 2017 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results, Other events
|
Jun 9, 2017 | Jun 8, 2017 |
| UPLOAD | Letter from the SEC | May 15, 2017 | — |
| 10-Q | Quarterly report | May 5, 2017 | Mar 31, 2017 |
| 8-K |
Current report
Results of operations
|
May 4, 2017 | May 4, 2017 |
| S-3 | Shelf registration | Apr 18, 2017 | — |
| DEFA14A | Additional proxy material | Apr 18, 2017 | — |
| DEF 14A | Proxy statement | Apr 18, 2017 | Jun 8, 2017 |
| 8-K |
Current report
Other events
|
Apr 18, 2017 | Apr 18, 2017 |
| 10-K | Annual report | Mar 10, 2017 | Dec 30, 2016 |
| 8-K |
Current report
Results of operations
|
Mar 9, 2017 | Mar 8, 2017 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure, Other events
|
Mar 9, 2017 | Mar 7, 2017 |
| 8-K |
Current report
Material agreement, New debt
|
Jan 24, 2017 | Jan 20, 2017 |
| 10-Q | Quarterly report | Nov 3, 2016 | Sep 30, 2016 |
| 8-K |
Current report
Results of operations, Officer or director change, Regulation FD disclosure
|
Nov 3, 2016 | Nov 3, 2016 |
| S-8 | Employee stock plan registration | Aug 4, 2016 | — |
| 10-Q | Quarterly report | Aug 4, 2016 | Jul 1, 2016 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2016 | Aug 4, 2016 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 14, 2016 | Jun 10, 2016 |
| 8-K |
Current report
Material agreement
|
Jun 13, 2016 | Jun 9, 2016 |
| 10-Q | Quarterly report | May 6, 2016 | Apr 1, 2016 |
| 8-K |
Current report
Results of operations
|
May 5, 2016 | May 5, 2016 |
| DEFA14A | Additional proxy material | Apr 19, 2016 | — |
| DEF 14A | Proxy statement | Apr 19, 2016 | Jun 10, 2016 |
| 10-K | Annual report | Mar 16, 2016 | Jan 1, 2016 |
| 8-K |
Current report
Results of operations
|
Mar 10, 2016 | Mar 10, 2016 |
| 8-K |
Current report
Unregistered share sale, Other events
|
Mar 9, 2016 | Mar 4, 2016 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale, Regulation FD disclosure
|
Mar 3, 2016 | Feb 26, 2016 |
| 10-Q | Quarterly report | Nov 13, 2015 | Oct 2, 2015 |
| 8-K |
Current report
Results of operations
|
Nov 13, 2015 | Nov 12, 2015 |
| UPLOAD | Letter from the SEC | Nov 3, 2015 | — |
| CORRESP | Letter to the SEC | Oct 19, 2015 | — |
| UPLOAD | Letter from the SEC | Oct 9, 2015 | — |
| CORRESP | Letter to the SEC | Sep 25, 2015 | — |
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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
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
Other Services-Engineering Services companies
- Tetra Tech Inc TTEK
- Stantec Inc STN
- Aecom ACM
- Vse Corp VSEC
- Mistras Group, Inc. MG
- Julong Holding Ltd JLHL
- HyOrc Corp HYOR
- Acorn Energy, Inc. ACFN
Source: SEC EDGAR filings. This is company-reported data, not investment advice.