Exhibit A

JOINT FILING AGREEMENT

The undersigned agree that this Schedule 13G Amendment No. 1 dated May 15, 2025 relating to the Common Stock, par value $0.001 per share, of AXT, Inc. shall be filed on behalf of the undersigned.

CLEVELAND CAPITAL MANAGEMENT, L.L.C.

By: /s/ Wade Massad

Name: Wade Massad

Title:  Managing Member

CLEVELAND CAPITAL, L.P.

By: /s/ Wade Massad

Name: Wade Massad

Title:  Managing Member

WADE MASSAD

By: /s/ Wade Massad

JOHN SHIRY

By: /s/ John Shiry