BlackRock, Inc. filed an amended Schedule 13G with the SEC on October 27, 2026, disclosing beneficial ownership of 2,039,439 shares of common stock in 908 Devices Inc. as of September 30, 2026.

Key Highlights

  • Aggregate beneficial ownership: BlackRock reported beneficial ownership of 2,039,439 shares of 908 Devices Inc. common stock.
  • Percent of class: The reported stake represents 4.9% of the outstanding class of common stock.
  • Sole voting power: BlackRock disclosed sole voting power over 1,988,695 shares.
  • Sole dispositive power: Sole dispositive power was reported over all 2,039,439 shares.
  • Shared voting and dispositive power: Both shared voting power and shared dispositive power were reported as 0.
  • Event date: The filing was triggered by an event dated September 30, 2026.

BlackRock's Amended Ownership Disclosure for 908 Devices Inc.

BlackRock, Inc., organized in Delaware and headquartered at 50 Hudson Yards, New York, NY 10001, filed Amendment No. 1 to its Schedule 13G concerning its holdings in 908 Devices Inc. (CUSIP 65443P102), whose principal executive offices are listed at 44 3rd Avenue, Burlington, MA 01803. According to the filing, the reporting entity is classified as a parent holding company (type "HC"), and the disclosure reflects securities beneficially owned by certain business units of BlackRock, Inc. and its subsidiaries and affiliates.

The filing states that BlackRock beneficially owns 2,039,439 shares of 908 Devices Inc. common stock, representing 4.9% of the class. Of those shares, 1,988,695 are subject to sole voting power, while all 2,039,439 shares carry sole dispositive power. Shared voting power and shared dispositive power are each reported as zero. The filing further notes, under Item 5, that this constitutes ownership of 5 percent or less of the class.

Under Item 6, the filing discloses that "various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of the common stock of 908 Devices Inc.," and that no single person's interest exceeds five percent of total outstanding common shares. The filing was signed by Spencer Fleming, Managing Director of BlackRock, Inc., on October 27, 2026. Subsidiary identification detail is referenced in Exhibit 99, per the requirements of Item 7.

What Was Disclosed

BlackRock, Inc. filed an amended Schedule 13G reporting beneficial ownership of 2,039,439 shares, or 4.9%, of 908 Devices Inc. common stock as of September 30, 2026, with sole voting power over 1,988,695 shares and sole dispositive power over the full position.