908 Devices Inc. — Director's Dealing 2021

Apr 30, 2021

SEC Form 4/A — Form 4/A

Issuer: 908 Devices Inc. (MASS)
CIK: 0001555279
Period of Report: 2020-12-22

Reporting Person: Knopp Kevin J. (Director, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-12-22	Common Stock, par value $0.001	C	53171	—	Acquired	811838	Direct
2020-12-22	Common Stock, par value $0.001	C	35446	—	Acquired	541223	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2020-12-22	Series A Preferred Stock	$	C	37845	Disposed		Common Stock, par value $0.001 (37845)	Direct
2020-12-22	Series A Preferred Stock	$	C	25229	Disposed		Common Stock, par value $0.001 (25229)	Indirect
2020-12-22	Series B Preferred Stock	$	C	12688	Disposed		Common Stock, par value $0.001 (12688)	Direct
2020-12-22	Series B Preferred Stock	$	C	8459	Disposed		Common Stock, par value $0.001 (8459)	Indirect
2020-12-22	Series D Preferred Stock	$	C	2638	Disposed		Common Stock, par value $0.001 (2638)	Direct
2020-12-22	Series D Preferred Stock	$	C	1758	Disposed		Common Stock, par value $0.001 (1758)	Indirect

Footnotes

F1: The original Form 4, filed December 22, 2020, is being amended by this Form 4 amendment solely to correct an administrative error related to the nature of the beneficial ownership of shares held by the reporting person. Due to an administrative error, those shares were reported as being held directly by the reporting person, instead of held indirectly through the reporting person's trust, for which the reporting person may be deemed to be the beneficial owner. This Form 4 corrects such error by adding line items for the amount of securities indirectly owned by the reporting person's trust and decreasing the total amount of securities directly owned by the reporting person accordingly.

F2: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F3: The shares are owned directly by The Kevin J. Knopp Irrevocable Trust of 2018. The reporting person's brother-in-law is the trustee of The Kevin J. KnoppIrrevocable Trust of 2018 and has sole voting and dispositive control with respect to all securities held by such trust. The reporting person may be deemed tobe the beneficial owner of the securities held by The Kevin J. Knopp Irrevocable Trust of 2018.