Form 4 Filing for 908 Devices Inc.

This filing details insider transactions for Mark Spoto, a director at 908 Devices Inc. On June 10, 2026, 14,083 Restricted Stock Units (RSUs) vested and were disposed of, with a zero-dollar transaction price per share. Concurrently, 14,083 shares of Common Stock were acquired. On June 11, 2026, an additional 13,656 RSUs vested and were acquired, with a zero-dollar transaction price per share. Also on June 11, 2026, an option to buy 6,209 shares of Common Stock was acquired at a price of $8.22 per share. These transactions indicate a shift in the reporting owner's holdings from RSUs and options to direct ownership of common stock, likely following vesting events.