Quick Takeaways
- First Light Asset Management, LLC filed SCHEDULE 13G/A for 908 Devices Inc. Common Stock, $0.001 par value (MASS).
- Disclosed ownership: 17%.
- Date of event: 31 Dec 2025.
First Light Asset Management, LLC - 31 Dec 2025 SCHEDULE 13G/A Report for 908 Devices Inc. Common Stock, $0.001 par value (MASS)
- Filing Manager
- First Light Asset Management, LLC
- Reporting Manager
- Mathew P. Arens
- Symbol
- MASS
- Shares outstanding
- 36,189,228 shares
- Disclosed Ownership
- 6,184,739 shares
- Ownership
- 17%
- Form type
- SCHEDULE 13G/A
- Filing time
- 17 Feb 2026, 16:35:46 UTC
- Date of event
- 31 Dec 2025
- Previous filing
- 05 Dec 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"First Light Asset Management, LLC disclosed 17% ownership in 908 Devices Inc. Common Stock, $0.001 par value (MASS) on 31 Dec 2025."
What Changed
- Previous schedule filing date: 05 Dec 2025.
- Current filing was accepted on 17 Feb 2026, 16:35.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Source Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting Managers (2)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| First Light Asset Management, LLC | 16% | 5,964,739 | 0 | 5,964,739 | /s/ Kurt T. Peterson | Kurt T. Peterson/Chief Compliance Officer | |
| Mathew P. Arens | 17% | 6,184,739 | 70,000 | 6,114,739 | /s/ Mathew P. Arens | Mathew P. Arens/Chief Executive Officer |