Brown Christopher D. 4

What Happened
Christopher D. Brown, a director of 908 Devices, had restricted stock units (RSUs) settle into common stock on February 1, 2026. Three RSU tranches converted into shares: 5,027 shares, 7,418 shares, and 10,992 shares, for a total of 23,437 shares. The Form 4 shows the derivative conversion (transaction code M) with $0.00 reported for the derivative disposition, indicating these were settled RSUs rather than a cash purchase or market sale.

Key Details

• Transaction date: February 1, 2026; Form 4 filed February 3, 2026 (appears timely).
• Specific tranches: 5,027; 7,418; and 10,992 shares — total 23,437 shares.
• Price/value: no cash exchanged for the settlement (derivative disposition listed at $0.00); acquisition price listed as N/A for the converted derivative.
• Shares owned after the transaction: not reported in the provided excerpt of the filing.
• Footnotes: These entries represent RSU settlements. Footnotes indicate the RSUs vest in four substantially equal annual installments based on grant dates (Feb 1, 2022; Feb 1, 2023; and Feb 1, 2024) and have no expiration.

Context

• This was a scheduled RSU vesting/settlement (conversion of RSU derivatives into common shares), not an open-market purchase or sale. The filing’s “Disposed” lines reflect conversion of the derivative instruments into shares rather than a sale of the underlying stock.
• Such vested RSU settlements are common compensation events and do not necessarily indicate the insider’s view on the company’s stock.