MASS 908 Devices Inc

FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * CRANDELL KEITH	2. Issuer Name and Ticker or Trading Symbol 908 Devices Inc. [ MASS ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director                    __X__ 10% Owner _____ Officer (give title below)    _____ Other (specify below)
(Last)          (First)          (Middle) 8755 WEST HIGGINS ROAD, SUITE 1025	3. Date of Earliest Transaction (MM/DD/YYYY) 6/15/2022
(Street) CHICAGO, IL 60631 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.001	6/15/2022		M		1379.00	A	(1)	1379.00	D
Common Stock, par value $0.001								5725045.00	I	See Footnote (2)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Unit	(1)	6/15/2022		M			1379.00	(3)	(3)	Common Stock, par value $0.001	1379.00	$0.00	0.00	D
Restricted Stock Unit	(1)	6/16/2022		A		4771.00		(4)	(4)	Common Stock, par value $0.001	4771.00	$0.00	4771.00	D
Stock Option (option to buy)	$14.15	6/16/2022		A		7970.00		(5)	6/16/2032	Common Stock, par value $0.001	7970.00	$0.00	7970.00	D

Explanation of Responses:
(1)	Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.001, when vested.
(2)	The securities are owned directly by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The reporting person is a managing director of ARCH VII LLC, and may be deemed to beneficially own the securities held by ARCH Fund VII. The reporting person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein.
(3)	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.
(4)	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.
(5)	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.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
CRANDELL KEITH 8755 WEST HIGGINS ROAD SUITE 1025 CHICAGO, IL 60631	X	X

Signatures
/s/ Michael S. Turner, as Attorney-in-Fact		6/17/2022
**Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
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