Griffith Joseph H. IV 4
4 · 908 Devices Inc. · Filed Feb 3, 2026
Research Summary
AI-generated summary of this filing
908 Devices (MASS) CFO Joseph Griffith Sells 23,175 Shares
What Happened
- Joseph H. Griffith IV, Chief Financial Officer of 908 Devices (MASS), settled multiple RSU awards and had a portion of resulting shares sold to cover tax withholding. The Form 4 shows conversions/settlements on Feb 1, 2026 (5,102; 10,306; 11,260; and 43,473 shares) and grant/award entries on Feb 2, 2026 (121,164 and 52,967 RSU-related entries). On Feb 2, 2026 he sold 23,175 shares in the open market at a weighted average price of $6.18 for aggregate proceeds of $143,222 (sales executed at prices ranging $6.105–$6.35).
Key Details
- Transaction dates: Feb 1–2, 2026.
- Sale: 23,175 shares disposed at a weighted average price of $6.18; total proceeds $143,222 (prices ranged $6.105–$6.35). The reporting person can provide detailed per-price breakdown on request (per footnote).
- RSU activity: multiple RSU settlements (reported as exercise/conversion M-type entries) and award/grant entries at $0 reported value (derivative transactions) — these reflect RSU vesting/settlement, not a cash purchase.
- Tax withholding: The sale was a “sell to cover” mandated by the issuer to satisfy tax withholding on the RSU settlement (footnote indicates the sale was not a discretionary open-market trade by the insider).
- Shares owned after transaction: not specified in the provided filing excerpt.
- Filing timeliness: no late-filing flag indicated in the provided details.
Context
- These filings reflect RSU vesting and settlement (footnote: each RSU converts into one share at settlement) and a routine sell-to-cover for required taxes—common when equity awards vest. The derivative entries reported with $0 disposed value reflect RSU settlement/withholding mechanics, not a market sale of those specific lots.
- For retail investors: this is a routine insider action to satisfy taxes on vested awards rather than an independent, discretionary sale signaling a change in outlook.
Insider Transaction Report
Form 4
908 Devices Inc.MASS
Griffith Joseph H. IV
Chief Financial Officer
Transactions
- Exercise/Conversion
Common Stock
[F1]2026-02-01+5,102→ 98,032 total - Exercise/Conversion
Common Stock
[F1]2026-02-01+10,306→ 108,338 total - Exercise/Conversion
Common Stock
[F1]2026-02-01+11,260→ 119,598 total - Exercise/Conversion
Common Stock
[F1]2026-02-01+43,473→ 163,071 total - Sale
Common Stock
[F2][F3]2026-02-02$6.18/sh−23,175$143,222→ 139,896 total - Exercise/Conversion
Restricted Stock Units
[F1][F4]2026-02-01−5,102→ 0 total→ Common Stock (5,102 underlying) - Exercise/Conversion
Restricted Stock Units
[F1][F5]2026-02-01−10,306→ 10,306 total→ Common Stock (10,306 underlying) - Exercise/Conversion
Restricted Stock Units
[F1][F6]2026-02-01−11,260→ 22,521 total→ Common Stock (11,260 underlying) - Exercise/Conversion
Restricted Stock Units
[F1][F7]2026-02-01−43,473→ 86,945 total→ Common Stock (43,473 underlying) - Award
Restricted Stock Units
[F1][F8]2026-02-02+121,164→ 121,164 total→ Common Stock (121,164 underlying) - Award
Stock Option (option to buy)
[F9]2026-02-02+52,967→ 52,967 totalExercise: $6.19Exp: 2036-02-01→ Common Stock (52,967 underlying)
Footnotes (9)
- [F1]Each Restricted Stock Unit ("RSU") represents a contingent right to receive, at settlement, one share of Common Stock. This transaction represents the settlement of RSUs in shares of Common Stock on their scheduled vesting date.
- [F2]The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.
- [F3]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.105 to $6.35, inclusive. The reporting person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
- [F4]These RSUs vest in four substantially equal annual installments at the four anniversary dates following February 1, 2022, subject to the reporting person's continued service through the applicable vesting date. The RSUs have no expiration date.
- [F5]These RSUs vest in four substantially equal annual installments at the four anniversary dates following February 1, 2023, subject to the reporting person's continued service through the applicable vesting date. The RSUs have no expiration date.
- [F6]These RSUs vest in four substantially equal annual installments at the four anniversary dates following February 1, 2024, subject to the reporting person's continued service through the applicable vesting date. The RSUs have no expiration date.
- [F7]The RSUs shall vest one-third on February 1, 2026, with the remaining two-thirds vesting in two substantially equal annual installments at the two anniversary dates following February 1, 2026, subject to the reporting person's continued service through the applicable vesting date. The RSUs have no expiration date.
- [F8]The RSUs shall vest one-third on February 1, 2027, with the remaining two-thirds vesting in two substantially equal annual installments at the two anniversary dates following February 1, 2027, subject to the reporting person's continued service through the applicable vesting date. The RSUs have no expiration date.
- [F9]One-third of the shares underlying the option become vested and exercisable on February 1, 2027, and the remaining two-thirds of the shares underlying the option become vested and exercisable in substantially equal monthly installments over the 24 months following February 1, 2027, subject to the reporting person's continued service through the applicable vesting date.
Signature
/s/ Mark S. Levine, Attorney-in-Fact|2026-02-03