John Kenneweg - 11 Mar 2022 Form 4 Insider Report for 908 Devices Inc. (MASS)

Role: Vice President, Government
Signature: /s/ Michael S. Turner, as attorney-in-fact
Issuer symbol: MASS
Transactions as of: 11 Mar 2022
Net transactions value: -$2,338
Form type: 4
Filing time: 15 Mar 2022, 16:32:16 UTC
Previous filing: 03 Mar 2022
Next filing: 21 Mar 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MASS	Common Stock, par value $0.001	Options Exercise	$41.65	+119		$0.3500^*	119	11 Mar 2022	Direct
transaction	MASS	Common Stock, par value $0.001	Sale	$2,380	-119	-100%	$20.00	0	11 Mar 2022	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 (option to buy)	Options Exercise	$0	-119	-0.14%	$0.000000	82,914	11 Mar 2022	Common Stock, par value $0.001	83,033	$0.3500	Direct	F2

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

Explanation of Responses:

Id	Content
F1	Represents sales effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.
F2	The shares underlying the option are fully vested and immediately exercisable.