144 0001540299 XXXXXXXX LIVE 0000854775 DIGI INTERNATIONAL INC. 001-34033 9350 Excelsior Blvd, Suite 700 Hopkins MN 55343 (952) 912-3444 DAVID H SAMPSELL Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

6376 415141.36 37702199 05/13/2026 NASDAQ Common 11/30/2024 Restricted Stock Issuer N 1 11/30/2024 Not Applicable Common 11/29/2025 Restricted Stock Issuer N 3666 11/29/2025 Not Applicable Common 11/26/2025 Restricted Stock Issuer N 1113 11/26/2025 Not Applicable Common 11/29/2025 Restricted Stock Issuer N 691 11/29/2025 Not Applicable Common 11/30/2025 Restricted Stock Issuer N 905 11/30/2025 Not Applicable Y 05/13/2026 /s/ David Harold Sampsell