Form 4 Filing for HRUSOVSKY E KEVIN

HRUSOVSKY E KEVIN, a director at 908 Devices Inc. (MASS), reported transactions on June 10-11, 2026. The filing includes the acquisition of 14,083 shares of Common Stock at a price of $0.00, bringing the total shares to 165,390. Additionally, 14,083 Restricted Stock Units (RSUs) were disposed of, and 13,656 RSUs were acquired. A stock option for 6,209 shares of Common Stock was also acquired. The RSUs and stock options have varying vesting schedules tied to continued service and company meetings. The transactions indicate a shift in holdings, with the disposal of vested RSUs and acquisition of new ones and stock options.