Transaction · 0001431531-26-000002

Griffith Joseph H. IV

Griffith Joseph H. IV, CFO, reported a transaction classified as exercise at 908 Devices Inc. involving 5102.000000 shares. Reported holdings after the transaction were 98032.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

exerciseSEC transaction code MCFO
MASS908 Devices Inc.
Filing timeFeb 04
Trade dateFeb 01, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$6.19
Pre-filing
1mo ago -17.8%1w ago -17.8%1d ago -17.8%
Returns since
7d +0.0%30d +6.8%90d +10.0%180d +36.0%1y +73.3%

MASS price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
MASS since 2026-02-04Filed 213 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
exercise
Code M
Identifier
0001431531-26-000002
Common Stock
Transaction date
Feb 01, 2026
Filed Feb 04, 2026, 01:45 AM · 3d delay
Shares
5.10k sh
Price unknown
Estimated value
Computed from shares × price
Holdings after
98.0k sh
Direct

Filing warnings

Notes recorded with this filing
1 warning
missing priceThe filing did not provide a usable price per share.

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Direct Ownership
-2score
Filing-only score

-2

Compact filing score computed from stored Form 4 facts. Version v1.

Neutral filing signal

This filing is broadly neutral on the filing-only scale. The Form 4 facts do not strongly tilt positive or negative.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chief Financial Officer

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. 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 t…

  2. 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…

  3. 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 provid…

  4. 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 ves…

  5. 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 ves…

  6. 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 ves…

  7. 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…

  8. 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…

  9. 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 subst…

Original filing · 0001431531-26-000002
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