908 Devices Inc. — Director's Dealing 2024

May 13, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 908 Devices Inc. (MASS)
CIK: 0001555279
Period of Report: 2024-05-13

Reporting Person: Knopp Kevin J. (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-05-13	Common Stock	P	10000.00	$6.42	Acquired	508981.00	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	541223.00	Indirect

Footnotes

F1: As a result of the reporting person's prior matchable purchases of Common Stock on May 7, 2024 with sales by the reporting person on February 1, 2024, the reporting person paid to 908 Devices Inc. the full amount of the profit realized in connection with such short-swing transactions. The purchases reported on this Form 4 were at prices that did not increase the short-swing profit, and thus no further disgorgement is owed to 908 Devices.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.89 to $6.70, 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: 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. Knopp Irrevocable 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 to be the beneficial owner of the securities held by The Kevin J. Knopp Irrevocable Trust of 2018.