MASS 908 DEVICES INC
FollowStock (common), issuer CIK 1555279
Filings received so far for Q3 2026: 3 13F filers report a position in MASS shares at 2026-09-30. The quarter is not complete: its 13F deadline is 2026-11-14, and the counts grow as filings arrive.
13D and 13G filers
No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.
Insider trades
| Owner | Date | Shares | Price | Filing |
|---|---|---|---|---|
| Brown Christopher D.director | 2026-10-07 | +60,000 M | $1.75 | Form 4 |
| Brown Christopher D.director | 2026-10-07 | -30,000 S | $11.89 | Form 4 |
| Griffith Joseph H. IVofficer (Chief Financial Officer) | 2026-10-06 | -5,000 S | $13.03 | Form 4 |
13F holders, Q3 2026
Filers in the available 13F reports with a share position at 2026-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.
| Holder | Shares | Value | % of portfolio | Change | Source |
|---|---|---|---|---|---|
| GAMMA Investing LLC | 1,216 | $15K | <0.01% | +548 | 13F-HRTimeline |
| Versant Capital Management, Inc | 1,147 | $14.2K | <0.01% | +77 | 13F-HRTimeline |
| Farther Finance Advisors, LLC | 176 | $2.17K | <0.01% | -27 | 13F-HRTimeline |
Events
Brown Christopher D. acquired 30,000 MASS shares on 2026-10-07, Form 4 filed 2026-10-09. 0001836988-26-000027
Accepted , ingestedGriffith Joseph H. IV sold 5,000 MASS shares on 2026-10-06, Form 4 filed 2026-10-08. 0001431531-26-000009
Accepted , ingested