Jeffrey P. George - Jun 15, 2022 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 15, 2022
Transactions value $: $0
Form type: 4
Date filed: 6/17/2022, 04:17 PM
Previous filing: May 10, 2022
Next filing: Feb 23, 2023

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		+1.38K	+271.46%		1.89K	Jun 15, 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	Restricted Stock Unit	Options Exercise	$0	-1.38K	-100%	$0.00^*	0	Jun 15, 2022	Common Stock, par value $0.001	1.38K		Direct	F1, F2
transaction	MASS	Restricted Stock Unit	Award	$0	+4.77K		$0.00	4.77K	Jun 16, 2022	Common Stock, par value $0.001	4.77K		Direct	F1, F3
transaction	MASS	Stock Option (option to buy)	Award	$0	+7.97K		$0.00	7.97K	Jun 16, 2022	Common Stock, par value $0.001	7.97K	$14.15	Direct	F4

* 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.
F2	The RSUs became fully vested on June 15, 2022, the day prior to the 2022 Annual Meeting of the Stockholders of 908 Devices Inc. The RSUs have no expiration date.
F3	The RSUs become fully vested on June 16, 2023 or the day prior to the 2023 Annual Meeting of the Stockholders of 908 Devices Inc., whichever occurs first, subject to the reporting person's continued service through the applicable vesting date, provided that, if the reporting person terminates their service for any reason, then a prorated number of RSUs will vest. The RSUs have no expiration date.
F4	The shares underlying the option become vested and exercisable in substantially equal monthly installments over the 12 months following June 16, 2022, subject to the reporting person's continued service through the applicable vesting date.