908 Devices Inc. — Director's Dealing 2021

Aug 30, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 908 Devices Inc. (MASS)
CIK: 0001555279
Period of Report: 2021-08-27

Reporting Person: Basarsky Trent A. (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-08-27	Common Stock	M	728.00	$1.75	Acquired	35728.00	Direct
2021-08-27	Common Stock	M	1136.00	$1.75	Acquired	36864.00	Direct
2021-08-27	Common Stock	M	139.00	$1.75	Acquired	37003.00	Direct
2021-08-27	Common Stock	S	2003.00	$34.96	Disposed	35000.00	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-08-27	Stock Option (Right to Buy)	$1.75	M	728.00	Disposed	2027-04-26	Common Stock (86507.00)	Direct
2021-08-27	Stock Option (Right to Buy)	$1.75	M	1136.00	Disposed	2027-04-26	Common Stock (85779.00)	Direct
2021-08-27	Stock Option (Right to Buy)	$1.75	M	139.00	Disposed	2027-04-26	Common Stock (84643.00)	Direct

Footnotes

F1: Represents sales effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.90 to $35.18, inclusive. The reporting person undertakes to provide to 908 Devices Inc., any security holder of 908 Devices Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F3: Twenty-five percent of the shares underlying the option became vested and exercisable on January 8, 2018 and the remaining 75% of the shares underlying the option become vested and exercisable in substantially equal monthly installments over the 36 months following January 8, 2018, subject to the reporting person's continued service through the applicable vesting date.