Christopher D. Brown - 01 Apr 2024 Form 4 Insider Report for 908 Devices Inc. (MASS)

Role: Chief Product Officer
Signature: /s/ Michael S. Turner, as Attorney-in-Fact
Issuer symbol: MASS
Transactions as of: 01 Apr 2024
Net transactions value: +$6,300
Form type: 4
Filing time: 02 Apr 2024, 16:06:49 UTC
Previous filing: 05 Mar 2024
Next filing: 08 Aug 2024
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MASS	Common Stock	Options Exercise	$6,300	+3,600	+0.41%	$1.75^*	884,994	01 Apr 2024	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	Stock Option (Right to Buy)	Options Exercise	$0	-3,600	-3.1%	$0.000000	114,318	01 Apr 2024	Common Stock	117,918	$1.75	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The number of securities reported in this column has been adjusted to reflect a prior option exercise and prior calculation error.
F2	The shares underlying the option are fully vested and immediately exercisable.