# Filing Detail

Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0001104659-26-092196
Filing Date
2026-08-07
Accepted
2026-08-06 18:43:19
Documents
99
Period of Report
2026-07-03

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-Q | wldn-20260703x10q.htm iXBRL | 10-Q | 2776883
2 | EX-31.1 | wldn-20260703xex31d1.htm | EX-31.1 | 11033
3 | EX-31.2 | wldn-20260703xex31d2.htm | EX-31.2 | 13811
4 | EX-32.1 | wldn-20260703xex32d1.htm | EX-32.1 | 13036
| Complete submission text file | 0001104659-26-092196.txt |  | 12117830

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
5 | EX-101.SCH | wldn-20260703.xsd | EX-101.SCH | 62804
6 | EX-101.CAL | wldn-20260703_cal.xml | EX-101.CAL | 89142
7 | EX-101.DEF | wldn-20260703_def.xml | EX-101.DEF | 229447
8 | EX-101.LAB | wldn-20260703_lab.xml | EX-101.LAB | 590233
9 | EX-101.PRE | wldn-20260703_pre.xml | EX-101.PRE | 459418
103 | EXTRACTED XBRL INSTANCE DOCUMENT | wldn-20260703x10q_htm.xml | XML | 2611158

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. (Filer) CIK: 0001370450 (see all company filings)

EIN.: 141951112 | State of Incorp.: DE | Fiscal Year End: 0101
Type: 10-Q | Act: 34 | File No.: 001-33076 | Film No.: 261250855
SIC: 8711 Services-Engineering Services
(CF Office: 07 Trade & Services)