SEC Form 4 · accession 0001535264-26-000053
908 Devices Inc. · MASS
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
AWM Investment Company, Inc.
10% Owner
Period of report
Sep 23, 2026
Accepted (ET)
Sep 25, 2026 · 4:19 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001555279
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1 | Sep 23, 2026 | S | 1,000 | $11.25 | D | 4,755,773 | I | By Limited Partnershp |
| Common StockF2,F3,F1 | Sep 24, 2026 | S | 24,000 | $11.3594 | D | 4,754,773 | I | By Limited Partnership |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1This is a weighted average price.
- F2AWM Investment Company, Inc., a Delaware Corporation (AWM), is the investment adviser to Special Situations Fund III QP, L.P. (SSFQP), Special Situations Cayman Fund, L.P. (CAY), Special Situations Private Equity Fund, L.P. (SSPE), Special Situations Technology Fund, L.P. (TECH) and Special Situations Technology Fund II, L.P. (TECH II and together with SSFQP, CAY, SSPE and TECH, the Funds). As the investment adviser to the Funds, AWM holds sole voting and investment power over 1,962,485 shares of Common Stock of the Issuer (the Shares) held by SSFQP, 560,026 Shares held by CAY, 216,802 Shares held by SSPE, 338,137 Shares held by TECH and 1,677,323 Shares held by TECH II.
- F3David M. Greenhouse (Greenhouse) and Adam C. Stettner (Stettner) are the controlling principals of AWM. The reporting person disclaims beneficial ownership of the Shares, except to the extent of its pecuniary interest therein. This report shall not be deemed an admission that the reporting person is the beneficial owner of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.