Form 4 filed by Brown Christopher D.
Brown Christopher D. filed this Form 4 on MASS (908 Devices Inc.) with 3 transaction rows and 0 holding rows, accepted by EDGAR 2026-10-09 20:15:10 UTC.
- Accession
- 0001836988-26-000027
- Filer
- CIK 1836988
- Filed
- 2026-10-09
- Accepted by EDGAR
- Ingested
- Source
- EDGAR live feed
Issuer and reporting owners
Issuer: MASS · 908 Devices Inc. (CIK 1555279)
- Brown Christopher D. director
Rows
| Security | Date | Code | Shares | Price | Owned after | Ownership |
|---|---|---|---|---|---|---|
| Common Stock | 2026-10-07 | S sold | -30,000 | $11.89 | 745,559 | D |
| Common Stock | 2026-10-07 | M exercised | +60,000 | $1.75 | 805,559 | D |
| Stock Option (option to buy) derivative | 2026-10-07 | M exercised | -60,000 | $0 | 54,318 | D |