Mailing Address 2401 EAST KATELLA AVENUE, SUITE 300 ANAHEIM CA 92806
Business Address 2401 EAST KATELLA AVENUE, SUITE 300 ANAHEIM CA 92806 800-424-9144
Willdan Group, Inc. CIK#: 0001370450 (see all company filings)

SIC: 8711 - SERVICES-ENGINEERING SERVICES
State location: CA | State of Inc.: DE | Fiscal Year End: 0102
(CF Office: 07 Trade & Services)
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Items 1 - 40  0001370450 Filings RSS Feed
Filings Format Description Filed/Effective File/Film Number
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0001558370-25-002429 (34 Act)  Size: 17 MB
2025-03-07 001-33076
25716787
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001558370-25-002394 (34 Act)  Size: 803 KB
2025-03-06 001-33076
25715425
SCHEDULE 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0002012383-25-001255 (34 Act)  Size: 11 KB
2025-02-05 005-82357
25592259
SCHEDULE 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001102598-25-000014 (34 Act)  Size: 7 KB
2025-01-08 005-82357
25519662
8-K  Documents   Interactive Data Current report, items 5.02 and 9.01
Acc-no: 0001558370-24-015826 (34 Act)  Size: 522 KB
2024-11-18 001-33076
241469285
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000932471-24-001292 (34 Act)  Size: 6 KB
2024-11-12 005-82357
241450330
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001654954-24-013936 (34 Act)  Size: 83 KB
2024-11-07 005-82357
241436065
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000932471-24-000782 (34 Act)  Size: 5 KB
2024-11-04 005-82357
241422619
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001558370-24-014072 (34 Act)  Size: 10 MB
2024-11-01 001-33076
241416543
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001558370-24-014057 (34 Act)  Size: 773 KB
2024-10-31 001-33076
241415415
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001102598-24-000167 (34 Act)  Size: 17 KB
2024-10-03 005-82357
241350790
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001558370-24-010633 (34 Act)  Size: 9 MB
2024-08-02 001-33076
241168330
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001558370-24-010603 (34 Act)  Size: 749 KB
2024-08-01 001-33076
241166849
SC 13G  Documents Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001654954-24-008946 (34 Act)  Size: 89 KB
2024-07-15 005-82357
241118219
SC 13D/A  Documents [Amend] General Statement of Acquisition of Beneficial Ownership
Acc-no: 0001654954-24-008799 (34 Act)  Size: 114 KB
2024-07-11 005-82357
241110973
S-8  Documents Securities to be offered to employees in employee benefit plans
Acc-no: 0001558370-24-009619 (33 Act)  Size: 191 KB
2024-06-28 333-280582
241086131
8-K  Documents   Interactive Data Current report, items 5.02, 5.07, and 9.01
Acc-no: 0001558370-24-009208 (34 Act)  Size: 374 KB
2024-06-14 001-33076
241045425
SC 13D/A  Documents [Amend] General Statement of Acquisition of Beneficial Ownership
Acc-no: 0001654954-24-005572 (34 Act)  Size: 90 KB
2024-05-03 005-82357
24914986
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001558370-24-006577 (34 Act)  Size: 8 MB
2024-05-03 001-33076
24910202
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001558370-24-006549 (34 Act)  Size: 603 KB
2024-05-02 001-33076
24908565
ARS  Documents Annual Report to Security Holders
Acc-no: 0001558370-24-005372 (34 Act)  Size: 2 MB
2024-04-19 001-33076
24858039
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0001558370-24-005370 (34 Act)  Size: 586 KB
2024-04-19 001-33076
24858022
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001558370-24-005368 (34 Act)  Size: 7 MB
2024-04-19 001-33076
24857984
EFFECT  Documents Notice of Effectiveness
Acc-no: 9999999995-24-000688 (33 Act)  Size: 1 KB
2024-03-19 16:30:00 333-277798
24766230
CORRESP  Documents [Cover]Correspondence
Acc-no: 0001104659-24-035023 Size: 7 KB
2024-03-15
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-24-002836 Size: 40 KB
2024-03-14 333-277798
S-3  Documents Registration statement under Securities Act of 1933
Acc-no: 0001104659-24-032459 (33 Act)  Size: 994 KB
2024-03-08 333-277798
24735271
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0001558370-24-002758 (34 Act)  Size: 17 MB
2024-03-08 001-33076
24731892
8-K  Documents   Interactive Data Current report, items 5.02, 7.01, and 9.01
Acc-no: 0001558370-24-002742 (34 Act)  Size: 173 KB
2024-03-07 001-33076
24731095
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001558370-24-002729 (34 Act)  Size: 821 KB
2024-03-07 001-33076
24730360
8-K  Documents   Interactive Data Current report, items 5.02 and 9.01
Acc-no: 0001558370-24-002215 (34 Act)  Size: 241 KB
2024-02-29 001-33076
24705335
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001102598-24-000008 (34 Act)  Size: 18 KB
2024-02-14 005-82357
24636616
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001086364-24-005059 (34 Act)  Size: 13 KB
2024-01-29 005-82357
24573086
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001398318-24-000004 (34 Act)  Size: 7 KB
2024-01-24 005-82357
24554361
8-K  Documents   Interactive Data Current report, items 5.02, 7.01, and 9.01
Acc-no: 0001104659-23-125397 (34 Act)  Size: 215 KB
2023-12-12 001-33076
231481755
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001558370-23-017486 (34 Act)  Size: 9 MB
2023-11-03 001-33076
231373981
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001558370-23-017427 (34 Act)  Size: 804 KB
2023-11-02 001-33076
231372604
8-K  Documents   Interactive Data Current report, items 1.01, 1.02, 2.03, 3.03, 7.01, and 9.01
Acc-no: 0001558370-23-016247 (34 Act)  Size: 1 MB
2023-10-05 001-33076
231309298
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001558370-23-013281 (34 Act)  Size: 9 MB
2023-08-04 001-33076
231141706
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001558370-23-013238 (34 Act)  Size: 767 KB
2023-08-03 001-33076
231140312