ELOI FENEL M 4

What Happened
Eloi Fenel, a director of 908 Devices Inc. (MASS), had 14,083 derivative units convert/vest on June 10, 2026 (reported as an exercise/conversion of a derivative). On the same day a matching 14,083-share disposal at $0.00 was reported (see note below). On June 11, 2026 Fenel was granted two RSU awards totaling 19,865 RSUs (13,656 + 6,209) at $0.00 per share; those awards are derivative RSUs that will convert to common stock upon vesting.

Key Details

• Filing: Form 4 filed 2026-06-12 for report period 2026-06-10 (timely filing).
• June 10, 2026: 14,083 shares acquired via exercise/conversion of derivative (price N/A). Same date: 14,083 shares disposed at $0.00 (reported as derivative disposal).
• June 11, 2026: Grants — 13,656 RSUs and 6,209 RSUs awarded at $0.00 (total 19,865 RSUs).
• Shares owned after the transactions: not specified in the provided filing details.
• Relevant footnotes from the filing:
  • F1: Each RSU converts to one share of common stock when vested.
  • F2: The RSUs that converted on June 10, 2026 became fully vested that day and have no expiration.
  • F3: The June 11, 2026 RSUs generally vest by June 11, 2027 (or the day prior to the 2027 annual meeting), subject to continued service; prorated vesting applies if service ends early.
  • F4: Any option-based shares referenced vest monthly over the 12 months following June 11, 2026, subject to continued service.

Context

• RSU conversions/vests are not open‑market purchases or sales; they represent compensation converting into shares.
• A disposal reported at $0.00 in conjunction with vested RSUs commonly reflects shares withheld to satisfy tax withholding obligations (the filing shows a $0.00 disposition, consistent with such administrative withholdings).
• The new RSU awards are time‑based and subject to continued service for vesting; they do not necessarily indicate a market buy or sell by the insider.