Willdan Group, Inc. — All Filings
1,000 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
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10-K
10-K/A
10-Q
144
3
3/A
4
4/A
424B4
424B5
5
8-A12B
8-K
8-K/A
ARS
CERTNAS
CORRESP
CT ORDER
DEF 14A
DEFA14A
EFFECT
FWP
S-1
S-1/A
S-3
S-3/A
S-8
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13G/A
SEC STAFF LETTER
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SCHEDULE 13G/A | — | 0000102909-26-002615 | Mar 27, 2026 | — |
| 4 | — | 0001733678-26-000013 | Mar 26, 2026 | Mar 25, 2026 |
| 4 | — | 0001270606-26-000013 | Mar 26, 2026 | Mar 25, 2026 |
| 4 | — | 0000904702-26-000015 | Mar 26, 2026 | Mar 25, 2026 |
| 4 | — | 0001733678-26-000012 | Mar 23, 2026 | Mar 20, 2026 |
| 4 | — | 0001270606-26-000011 | Mar 23, 2026 | Mar 20, 2026 |
| 4 | — | 0000904702-26-000013 | Mar 23, 2026 | Mar 20, 2026 |
| 4 | — | 0001270606-26-000010 | Mar 19, 2026 | Mar 17, 2026 |
| 4 | — | 0001733678-26-000010 | Mar 19, 2026 | Mar 17, 2026 |
| 4 | — | 0000904702-26-000011 | Mar 19, 2026 | Mar 17, 2026 |
| 4 | — | 0001733678-26-000008 | Mar 17, 2026 | Mar 16, 2026 |
| 4 | — | 0001270606-26-000008 | Mar 17, 2026 | Mar 16, 2026 |
| 4 | — | 0000904702-26-000009 | Mar 17, 2026 | Mar 16, 2026 |
| 4 | — | 0001733678-26-000006 | Mar 12, 2026 | Mar 11, 2026 |
| 4 | — | 0001395188-26-000002 | Mar 12, 2026 | Mar 11, 2026 |
| 4 | — | 0001270606-26-000006 | Mar 12, 2026 | Mar 11, 2026 |
| 4 | — | 0000904702-26-000007 | Mar 12, 2026 | Mar 11, 2026 |
| 4 | — | 0001733678-26-000004 | Mar 11, 2026 | Mar 9, 2026 |
| 4 | — | 0001270606-26-000004 | Mar 11, 2026 | Mar 9, 2026 |
| 4 | — | 0000904702-26-000005 | Mar 11, 2026 | Mar 9, 2026 |
| 4 | — | 0001640413-26-000002 | Mar 10, 2026 | Mar 6, 2026 |
| 144 | — | 0001950047-26-002307 | Mar 6, 2026 | — |
| 4 | — | 0000904702-26-000002 | Mar 5, 2026 | Mar 3, 2026 |
| 4 | — | 0001733678-26-000002 | Mar 5, 2026 | Mar 3, 2026 |
| 4 | — | 0001270606-26-000002 | Mar 5, 2026 | Mar 3, 2026 |
| 10-K | 10-K | 0001104659-26-020767 | Feb 27, 2026 | Jan 2, 2026 |
| 8-K | 8-K | 0001104659-26-020502 | Feb 26, 2026 | — |
| 10-Q | 10-Q | 0001104659-25-107945 | Nov 7, 2025 | Oct 3, 2025 |
| 8-K | 8-K | 0001104659-25-107776 | Nov 6, 2025 | — |
| SCHEDULE 13G/A | — | 0000102909-25-000343 | Oct 31, 2025 | — |
| 4 | — | 0001733678-25-000006 | Sep 22, 2025 | Sep 18, 2025 |
| 4 | — | 0001701806-25-000005 | Sep 22, 2025 | Sep 18, 2025 |
| 144 | — | 0001950047-25-007344 | Sep 18, 2025 | — |
| 144 | — | 0001950047-25-007309 | Sep 18, 2025 | — |
| 4 | — | 0001415889-25-023045 | Aug 26, 2025 | Aug 25, 2025 |
| 4 | — | 0001415889-25-023043 | Aug 26, 2025 | Aug 22, 2025 |
| 144 | — | 0001950047-25-006369 | Aug 25, 2025 | — |
| 4 | — | 0001415889-25-022939 | Aug 25, 2025 | Aug 21, 2025 |
| 4 | — | 0001415889-25-022636 | Aug 21, 2025 | Aug 20, 2025 |
| 4 | — | 0001415889-25-022512 | Aug 20, 2025 | Aug 18, 2025 |
| 4 | — | 0001415889-25-022509 | Aug 20, 2025 | Aug 18, 2025 |
| 4 | — | 0001415889-25-022508 | Aug 20, 2025 | Aug 18, 2025 |
| 4 | — | 0001415889-25-022507 | Aug 20, 2025 | Aug 18, 2025 |
| 4 | — | 0001415889-25-022198 | Aug 18, 2025 | Aug 15, 2025 |
| 4 | — | 0001415889-25-022196 | Aug 18, 2025 | Aug 14, 2025 |
| 144 | — | 0001950047-25-006012 | Aug 18, 2025 | — |
| 4 | — | 0001415889-25-022106 | Aug 15, 2025 | Aug 13, 2025 |
| 144 | — | 0001950047-25-005897 | Aug 15, 2025 | — |
| 144 | — | 0001950047-25-005857 | Aug 14, 2025 | — |
| 4 | — | 0001415889-25-021978 | Aug 14, 2025 | Aug 12, 2025 |