KEVIN MCCALLION plan to sell securities of 908 DEVICES INC. under Form 144

KEVIN MCCALLION filed Form 144 to notify SEC of plan to sell 27000 units of 908 DEVICES INC. securities around 2026-04-08, with aggregate market value of $182,520.00. The total outstanding units is 37379953.0. The amount planned to be sold represents 0.07% of total outstanding units; Recent transactions in past 3 months include: On 03/02/2026, sold 7 units for $49.00; On 02/20/2026, sold 300 units for $2108.01; On 02/18/2026, sold 9000 units for $63336.60; On 01/22/2026, sold 9438 units for $66090.36;