Mark Spoto - 14 Oct 2025 Form 4 Insider Report for 908 Devices Inc. (MASS)

Reporting relationship: Director
Issuer ticker: MASS
Reported as of: 14 Oct 2025
Net transaction value: $0
SEC form: 4
Accepted by SEC: 03 Feb 2026, 20:45:21 UTC
Prior SEC filing: 13 Jun 2025
Next SEC filing: 06 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Mark S. Levine, Attorney-in-Fact

Key filing fact

Mark Spoto filed Form 4 for 908 Devices Inc. (MASS) on 03 Feb 2026.

Key facts

This page summarizes Mark Spoto's Form 4 filing for 908 Devices Inc. (MASS).
3 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 03 Feb 2026, 20:45.

Change

Previous filing in this sequence was filed on 13 Jun 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001836585 Primary reporting owner

Spoto Mark

Relationship: Director
Address: C/O 908 DEVICES INC., 44 3RD AVENUE, BURLINGTON
Signature: /s/ Mark S. Levine, Attorney-in-Fact
Signature date: 03 Feb 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MASS transaction

Common Stock

Will/Inheritance

Transaction value: $0
Shares: +928
Change %
Price: $0.000000
Shares after: 928
Date: 14 Oct 2025
Ownership: By spouse

MASS transaction

Common Stock

Gift

Transaction value: $0
Shares: -928
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 30 Dec 2025
Ownership: By spouse

MASS transaction

Common Stock

Gift

Transaction value: $0
Shares: +928
Change %: +1.2%
Price: $0.000000
Shares after: 75,263
Date: 30 Dec 2025
Ownership: Direct

MASS holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 3,599
Date: 14 Oct 2025
Ownership: See footnote
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

These securities are owned directly by Razor's Edge Ventures, LLC. The reporting person is a managing member of Razor's Edge Ventures, LLC and may be deemed to be the beneficial owner of the securities held by Razor's Edge Ventures, LLC. The reporting person disclaims beneficial ownership of the securities held by Razor's Edge Ventures, LLC except to the extent of his pecuniary interest therein.