Insider Profile · SEC Form 4 Activity · Trailing 90 Days
Brown Christopher D.
Over the trailing 90 days, Brown Christopher D. (Other at 908 Devices Inc.) sold $876K of stock in MASS, per 7 SEC Form 4 transactions.
- Role
- Other
- Companies
- MASS
- Window
- Trailing 90 days · 7 transactions · CIK 1836988
- Net activity
- −$876K ($0 bought · $876K sold)
By Company (Trailing 90 Days)
| Symbol | Company | Txns | Bought | Sold | Net |
|---|---|---|---|---|---|
| MASS | 908 Devices Inc. | 7 | — | $876K | −$876K |
Transactions (7)
| Date | Symbol | Type | Shares | Value | Description |
|---|---|---|---|---|---|
| 2026-07-02 | MASS | Sell | 2.2K | $20K | Open market or private sale |
| 2026-06-30 | MASS | Sell | 20.0K | $177K | Open market or private sale |
| 2026-06-23 | MASS | Sell | 9.9K | $89K | Open market or private sale |
| 2026-06-04 | MASS | Sell | 100 | $900 | Open market or private sale |
| 2026-06-03 | MASS | Sell | 20.0K | $175K | Open market or private sale |
| 2026-05-28 | MASS | Sell | 30.0K | $270K | Open market or private sale |
| 2026-05-06 | MASS | Sell | 20.0K | $145K | Open market or private sale |
Activity shown covers the trailing 90 days of SEC Form 4 filings. "Buy" and "sell" follow the SEC acquired/disposed codes and include compensation events (grants, option exercises, tax withholding) unless noted. Historical fact, not investment advice.
Follow Brown's next move
Real-time Form 4 alerts, insider track records, and cluster detection — matched to your watchlist.