X0306 5 2022-12-31 false 0 0 0001555279 908 Devices Inc. MASS 0001252546 HRUSOVSKY E KEVIN C/O 908 DEVICES INC. 645 SUMMER STREET BOSTON MA 02210 true false false false Common Stock 2022-12-19 5 G false 193176.00 0.00 D 127395.00 D Common Stock 2022-12-19 5 G false 193176.00 0.00 A 329675.00 I See Footnote On December 19, 2022, 193,176 shares of the Issuer's Common Stock were transferred from the reporting person to the E. Kevin Hrusovsky 2012 Irrevocable Trust. This was a bona fide gift with no payment in consideration. The securities are owned directly by the E. Kevin Hrusovsky 2012 Irrevocable Trust. The reporting person's spouse and children are trustees of E. Kevin Hrusovsky 2012 Irrevocable Trust and have joint voting and dispositive control with respect to all securities held by E. Kevin Hrusovsky 2012 Irrevocable Trust and the reporting person may be deemed to be the beneficial owner of the securities held by E. Kevin Hrusovsky 2012 Irrevocable Trust. /s/ Michael S. Turner, as Attorney-in-Fact 2023-02-14