Key facts
- This page summarizes Michael S. Turner's Form 4 filing for 908 Devices Inc. (MASS).
- 2 reported transactions and 2 derivative rows are listed below.
- Accepted by SEC: 05 Mar 2025, 16:42.
Michael S. Turner - 03 Mar 2025 Form 4 Insider Report for 908 Devices Inc. (MASS)
- Reporting relationship
- Chief Legal & Admin Officer
- Issuer ticker
- MASS
- Reported as of
- 03 Mar 2025
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 05 Mar 2025, 16:42:41 UTC
- Prior SEC filing
- 04 Feb 2025
- Next SEC filing
- 18 Jun 2025
- Source filing
- View source filing
- Reporting owner signature
- /s/ Michael S. Turner
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Michael S. Turner filed Form 4 for 908 Devices Inc. (MASS) on 05 Mar 2025.
Change
- Previous filing in this sequence was filed on 04 Feb 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
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
MASS
transaction
Derivative
Stock Option (option to buy)
Award
- Transaction value
- $0
- Shares
- +57,111
- Change %
- Price
- $0.000000
- Shares after
- 57,111
- Date
- 03 Mar 2025
- Ownership
- Direct
- Underlying class
- Common Stock, par value $0.001
- Underlying amount
- 57,111
- Exercise price
- $1.98
- Footnotes
- F1
MASS
transaction
Derivative
Restricted Stock Units
Award
- Transaction value
- $0
- Shares
- +125,470
- Change %
- Price
- $0.000000
- Shares after
- 125,470
- Date
- 03 Mar 2025
- Ownership
- Direct
- Underlying class
- Common Stock, par value $0.001
- Underlying amount
- 125,470
- Exercise price
- Footnotes
- F2, F3
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 3 footnotes
Footnote F1
One-third of the shares underlying the option become vested and exercisable on February 1, 2026, and the remaining two-thirds of the shares underlying the option become vested and exercisable in substantially equal monthly installments over the 24 months following February 1, 2026, subject to the reporting person's continued service through the applicable vesting date.
Footnote F2
Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.001, when vested.
Footnote F3
The RSUs shall vest one-third on February 1, 2026, with the remaining two-thirds vesting in two substantially equal annual installments at the two anniversary dates following February 1, 2026, subject to the reporting person's continued service through the applicable vesting date. The RSUs have no expiration date.