908 Devices Inc. — Director's Dealing 2024

May 7, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 908 Devices Inc. (MASS)
CIK: 0001555279
Period of Report: 2024-05-07

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-05-07	Common Stock	P	10000.00	$5.60	Acquired	468981.00	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	541223.00	Indirect

Footnotes

F1: The reporting person's purchase of Common Stock reported herein was matchable under Section 16(b) of the Securities Exchange Act of 1934, to the extent of 9,071 shares, representing (i) the reporting person's sale of 4,099 shares of Common Stock at a price of $6.9716 per share on February 1, 2024, and (ii) the reporting person's sale of 4,972 shares of Common Stock at a price of $7.0161 per share on February 1, 2024. The reporting person has paid to 908 Devices Inc. an amount equal to $12,698.28, representing the full amount of the profit realized in connection with the short-swing transactions.

F2: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.57 to $5.70, 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.