Exhibit A

JOINT FILING AGREEMENT

The undersigned agree that this Schedule 13G Amendment No. 1 dated February 13, 2026, relating to the Common Stock, par value $0.01 per share, of Alpha Pro Tech Ltd shall be filed on behalf of the undersigned.

NEEDHAM INVESTMENT MANAGEMENT L.L.C.

By: /s/ James W. Giangrasso

Name: James W. Giangrasso

Title:   Chief Financial Officer

NEEDHAM ASSET MANAGEMENT, LLC

By: /s/ James W. Giangrasso

Name: James W. Giangrasso

Title:   Authorized Person

NEEDHAM AGGRESSIVE GROWTH FUND

By: /s/ James W. Giangrasso

Name: James W. Giangrasso

Title:   Authorized Person

GEORGE A. NEEDHAM

By: /s/ George A. Needham