Who
Christopher D. Brown
Director
Company insider
Files Form 4 as: Chief Product Officer, 908 Devices.
In numbers
- Trades disclosed
- 106
- Buys
- 0
- Sells
- 38
- Bought
- $0
- Sold
- $9.7M
- Companies
- 1
- Companies where not an officer
- 0
- First trade
- 22 Dec 2020
- Last trade
- 7 Oct 2026
- Last filed
- 9 Oct 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 7 Oct 2026filed 9 Oct 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $357K30,000 at $11.89 | filing |
| 7 Oct 2026filed 9 Oct 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Code M | $105K60,000 at $1.75 | filing |
| 7 Oct 2026filed 9 Oct 2026 | MASS 908 Devicesoption or derivative · Life-science tools | SEC FORM 4 Code M | —60,000 at $0.00 | filing |
| 2 Sep 2026filed 4 Sep 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $317K30,000 at $10.58 | filing |
| 2 Sep 2026filed 4 Sep 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $317K30,000 at $10.58 | filing |
| 11 Aug 2026filed 12 Aug 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $77K8,358 at $9.23 | filing |
| 11 Aug 2026filed 12 Aug 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $77K8,358 at $9.23 | filing |
| 10 Aug 2026filed 12 Aug 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $85K9,442 at $9.03 | filing |
| 10 Aug 2026filed 12 Aug 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $85K9,442 at $9.03 | filing |
| 5 Aug 2026filed 7 Aug 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $170K20,000 at $8.49 | filing |
| 5 Aug 2026filed 7 Aug 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $170K20,000 at $8.49 | filing |
| 2 Jul 2026filed 7 Jul 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $20K2,200 at $9.02 | filing |
| 2 Jul 2026filed 7 Jul 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $20K2,200 at $9.02 | filing |
| 30 Jun 2026filed 2 Jul 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $177K20,000 at $8.84 | filing |
| 30 Jun 2026filed 2 Jul 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $177K20,000 at $8.84 | filing |
| 23 Jun 2026filed 25 Jun 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $89K9,900 at $9.04 | filing |
| 23 Jun 2026filed 25 Jun 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $89K9,900 at $9.04 | filing |
| 4 Jun 2026filed 5 Jun 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $900100 at $9.00 | filing |
| 4 Jun 2026filed 5 Jun 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $900100 at $9.00 | filing |
| 3 Jun 2026filed 4 Jun 2026 | MASS 908 DevicesLife-science tools | SEC FORM 4 Sold | $175K20,000 at $8.73 | filing |
News
No headline names them, or the companies they trade most, lately.