Exhibit A
JOINT FILING AGREEMENT
The undersigned agree that this Schedule 13G dated May 19, 2026 relating to the Common Stock, par value $0.01, of Willdan Group, Inc. shall be filed on behalf of the undersigned.
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DIVISADERO STREET CAPITAL MANAGEMENT, LP
By: Divisadero Street Capital, LLC, its general partner
By: /s/ William Zolezzi | |
| Name: William Zolezzi | |
| Title: Manager |
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WILLIAM ZOLEZZI
By: /s/ William Zolezzi |
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DIVISADERO STREET PARTNERS, L.P.
By: Divisadero Street Partners GP, LLC, its general partner
By: /s/ William Zolezzi | |
| Name: William Zolezzi | |
| Title: Manager |
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DIVISADERO STREET PARTNERS GP, LLC
By: /s/ William Zolezzi | |
| Name: William Zolezzi | |
| Title: Manager |
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DIVISADERO STREET CAPITAL, LLC
By: /s/ William Zolezzi | |
| Name: William Zolezzi | |
| Title: Manager |