Marcia Eisenberg - Jun 11, 2025 Form 4 Insider Report for 908 Devices Inc. (MASS)

Role
Director
Signature
/s/ Michael S. Turner, as Attorney-in-Fact
Stock symbol
MASS
Transactions as of
Jun 11, 2025
Transactions value $
$0
Form type
4
Date filed
6/13/2025, 04:19 PM
Previous filing
Feb 25, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Eisenberg Marcia Director C/O 908 DEVICES INC., 645 SUMMER STREET, BOSTON /s/ Michael S. Turner, as Attorney-in-Fact 2025-06-13 0001866723

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MASS Common Stock Options Exercise +11.4K +77.87% 26K Jun 11, 2025 Direct F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction MASS Restricted Stock Units Options Exercise $0 -11.4K -100% $0.00 0 Jun 11, 2025 Common Stock 11.4K Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.001, when vested. This transaction represents the settlement of RSUs in shares of Common Stock on their scheduled vesting date.
F2 The RSUs became fully vested on June 11, 2025, the day prior to the 2025 Annual Meeting of the Stockholders of 908 Devices Inc. The RSUs have no expiration date.