Brown Christopher D.
Reporting owner on Forms 3, 4 and 5, CIK 1836988.
Brown Christopher D. reported on 1 issuer in 1 filing, the latest a Form 4 filed 2026-10-09.
Issuers
| Issuer | Roles in the latest filing | Filings | Last filed |
|---|---|---|---|
| MASS · 908 Devices Inc.CIK 1555279 | director | 1 | 2026-10-09 |
Transactions and holdings
Every row of the person's Forms 3, 4 and 5, newest first, with the price and the amount owned after the row as filed.
| Security | Date | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| MASS · 908 Devices Inc.Common Stock | 2026-10-07 | S sold | -30,000 | $11.89 | 745,559 | Form 4 |
| MASS · 908 Devices Inc.Common Stock | 2026-10-07 | M exercised | +60,000 | $1.75 | 805,559 | Form 4 |
| MASS · 908 Devices Inc.Stock Option (option to buy), derivative | 2026-10-07 | M exercised | -60,000 | $0 | 54,318 | Form 4 |
Filings
The person's Forms 3, 4 and 5, and any 13D or 13G naming it.
| Filing | Subject | Filed | Accepted | Ingested |
|---|---|---|---|---|
| Form 4 0001836988-26-000027 | 908 Devices Inc. | 2026-10-09 |