Exhibit A

JOINT FILING AGREEMENT

The undersigned agree that this Schedule 13G Amendment No. 3 dated May 15, 2025 relating to the Common Stock, $0.0001 par value, of Immunic, Inc. shall be filed on behalf of the undersigned.

AVIDITY PARTNERS MANAGEMENT LP

By: /s/ Michael Gregory

Name: Michael Gregory

Title:   Managing Member

AVIDITY PARTNERS MANAGEMENT (GP) LLC

By: /s/ Michael Gregory

Name: Michael Gregory

Title:   Managing Member

AVIDITY CAPITAL PARTNERS FUND (GP) LP

By: /s/ Michael Gregory

Name: Michael Gregory

Title:   Managing Member

AVIDITY CAPITAL PARTNERS (GP) LLC

By: /s/ Michael Gregory

Name: Michael Gregory

Title:   Managing Member

AVIDITY PRIVATE MASTER FUND I LP

By: /s/ Michael Gregory

Name: Michael Gregory

Title:   Managing Member

MICHAEL GREGORY

By: /s/ Michael Gregory