Kenneweg John 4

What Happened
John Kenneweg, Senior Vice President of Sales & Product Marketing at 908 Devices (MASS), was granted 26,042 performance stock units (PSUs) on April 28, 2026. The grant is recorded as a derivative award at $0.00 per unit (an equity award rather than a purchase). The issuer's compensation committee certified achievement of the applicable performance goals on April 28; the PSUs will vest on May 1, 2026 and each PSU converts to one share of common stock when vested.

Key Details

• Transaction date: April 28, 2026; Form 4 filed April 29, 2026 (appears timely).
• Award: 26,042 PSUs; reported acquisition price $0.00 (indicates a grant/award).
• Vesting: PSUs will vest on May 1, 2026 per the filing.
• PSU terms: Each PSU converts to one share when vested; PSUs have no expiration date. (Footnotes F1–F2)
• Shares owned after transaction: Not specified in the Form 4.
• No indication the shares were sold or that a trading plan (e.g., 10b5-1) was used.

Context: This was an equity award tied to performance goals rather than an open‑market buy or sale. For retail investors, awards like PSUs increase an insider’s potential stock exposure if and when they vest, but they do not represent an immediate cash investment by the insider.