Exhibit A
JOINT FILING AGREEMENT
The undersigned agree that this Schedule 13G Amendment No. 1 dated August 14, 2026 relating to the Class A common stock, $0.0001 par value per share, of ADVANTAGE SOLUTIONS INC. shall be filed on behalf of the undersigned.
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CASTLEKNIGHT MASTER FUND LP By: CastleKnight Fund GP LLC, its general partner By: Weitman Capital LLC, its managing member
By: /s/ Aaron Weitman | |
| Name: Aaron Weitman | |
| Title: Manager |
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CASTLEKNIGHT FUND GP LLC By: Weitman Capital LLC, its managing member
By: /s/ Aaron Weitman | |
| Name: Aaron Weitman | |
| Title: Manager |
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CASTLEKNIGHT MANAGEMENT LP By: CastleKnight Management GP LLC, its general partner By: Weitman Capital LLC, its managing member
By: /s/ Aaron Weitman | |
| Name: Aaron Weitman | |
| Title: Manager |
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CASTLEKNIGHT MANAGEMENT GP LLC By: Weitman Capital LLC, its managing member
By: /s/ Aaron Weitman | |
| Name: Aaron Weitman | |
| Title: Manager |
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WEITMAN CAPITAL LLC
By: /s/ Aaron Weitman | |
| Name: Aaron Weitman | |
| Title: Manager |
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AARON WEITMAN
By: /s/ Aaron Weitman |