Insider Transaction Report

This filing details a transaction by Brandi C. Vann, a director at 908 Devices Inc. (MASS). On August 1, 2026, Vann acquired 5,192 shares of Common Stock and was granted 5,192 Restricted Stock Units (RSUs). The RSUs vest over three years, starting August 1, 2025, contingent upon continued service. Each RSU represents a right to one share of Common Stock upon vesting. Following these transactions, Vann holds 5,192 shares of Common Stock and 10,385 RSUs.