X0306 4 2023-01-26 0001370450 Willdan Group, Inc. WLDN 0001539281 Forager Fund, L.P. 2024 3RD AVE. N, SUITE 201 BIRMINGHAM AL 35203 true 0001877495 Kissel Edward Urban 2024 3RD AVE. N SUITE 201 BIRMINGHAM AL 35203 true 0001877496 MacArthur Robert Symmes 2024 3RD AVE. N SUITE 201 BIRMINGHAM AL 35203 true Common Stock, par value $0.01 per share 2023-01-26 4 P false 11392 18.23 A 1524976 D Common Stock, par value $0.01 per share 11402 D Common Stock, par value $0.01 per share 271 D Common Stock, par value $0.01 per share 385537 I See footnote The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $17.85 to $18.70, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within this range. The shares reported are directly held by Forager Fund, L.P. (the "Fund"). Each of Messrs. Kissel and MacArthur is a principal of Forager Capital Management, LLC, the general partner of the Fund (the "GP"), and has shared authority to vote (or direct the vote of), and to dispose (or direct the disposal) of, these shares on behalf of the GP. Each of the Reporting Persons disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein, if any. The shares reported are directly held by Mr. Kissel. Each of the Reporting Persons disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein, if any. The shares reported are directly held by Mr. MacArthur. Each of the Reporting Persons disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein, if any. The shares reported are directly held by a separate account managed by the GP. Each of Messrs. Kissel and MacArthur has shared authority to vote (or direct the vote of), and to dispose (or direct the disposal) of, these shares on behalf of the GP. Each of the Reporting Persons disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein, if any. /s/ Edward Kissel, managing member of sole general partner on behalf of Forager Fund, L.P. 2023-01-30 /s/ Edward Kissel 2023-01-30 /s/ Edward Kissel on behalf of Robert MacArthur by power of attorney 2023-01-30