908 Devices Inc. - MASS
Ownership (Schedule 13D / 13G) · latest 50 filings
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| Filed | Form | Reporting person | Percent | Shares | SEC |
|---|---|---|---|---|---|
| Feb 17, 2026 | SCHEDULE 13G/A | First Light Asset Management, LLC | 16.48% | 5,964,739 | View |
| Feb 17, 2026 | SCHEDULE 13G/A | Mathew P. Arens | 17.09% | 6,184,739 | View |
| Dec 05, 2025 | SCHEDULE 13G/A | First Light Asset Management, LLC | 12.93% | 4,680,859 | View |
| Dec 05, 2025 | SCHEDULE 13G/A | Mathew P. Arens | 12.93% | 4,680,859 | View |
| Nov 14, 2025 | SCHEDULE 13G | First Light Asset Management, LLC | 9.84% | 3,562,257 | View |
| Nov 14, 2025 | SCHEDULE 13G | Mathew P. Arens | 9.84% | 3,562,257 | View |
| Nov 04, 2025 | SCHEDULE 13G/A | ARK Investment Management LLC | 5.41% | 1,953,772 | View |
| Nov 04, 2025 | SCHEDULE 13G/A | Catherine D. Wood | 5.41% | 1,953,772 | View |
Percent = "% of class represented by amount beneficially owned" for this reporting person in the filed 13D/13G.
Shares = reported beneficial ownership amount for the same row (not portfolio shares from 13F).
Amendments (/A) can repeat the same holder over time, so rows should not be summed.
Extraction is best-effort from filing text and can be missing or noisy; verify exact figures via the SEC link in each row.