ARK Investment Management Reduces Stake in 908 Devices Inc. Below 5% Threshold

ARK Investment Management LLC and its CEO, Catherine D. Wood, filed a Schedule 13G/A on June 5, 2026, regarding their holdings in 908 Devices Inc. (MASS). This filing represents Amendment No. 8 and discloses that the filers now beneficially own 1,883,206 shares of Common Stock, representing a 4.94% ownership stake in the company. This is a decrease from their previous holding of 1,946,685 shares. As the ownership level has fallen below the 5% threshold, the filers are reporting that they no longer hold a significant reportable position under Section 13(d). ARK Investment Management LLC reports sole voting and dispositive power over the shares, while Catherine D. Wood reports shared voting and dispositive power. The securities were acquired in the ordinary course of business and are not held for the purpose of influencing or changing the control of the issuer. The event triggering this filing occurred on May 31, 2026.