McCallion Kevin J. 4/A
4/A · 908 Devices Inc. · Filed Mar 5, 2026
Insider Transaction Report
Form 4/AAmended
908 Devices Inc.MASS
McCallion Kevin J.
SVP, Products and Production
Transactions
- Exercise/Conversion
Common Stock
[F1]2026-03-02$1.05/sh+7$7→ 44,932 total - Sale
Common Stock
[F1]2026-03-02$7.00/sh−7$49→ 44,925 total - Exercise/Conversion
Stock Option (right to buy)
[F1][F2]2026-03-02−7→ 26,686 totalExercise: $1.05Exp: 2030-08-27→ Common Stock (7 underlying)
Footnotes (2)
- [F1]This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025.
- [F2]The shares underlying the option are fully vested and immediately exercisable.
Signature
/s/ Mark S. Levine, Attorney-in-Fact|2026-03-04