MASS: Brown Christopher D. sold $357K of stock
By AlphaYouPublished Form 4
Brown Christopher D.
Reporting filer
Brown Christopher D. reported selling 30,000 shares of 908 Devices Inc. for about $357K ($11.89 a share on average). Form 4 filed Oct 9, 2026 lists 3 entries.
See the price move since this trade →
- Disclosed
- Oct 9, 2026
Reported details
3 entries| Security | Owner | Date | Code | Action | Quantity | Price | Following holdings | Reporting delay | Filed terms and references |
|---|---|---|---|---|---|---|---|---|---|
| Common Stock | Brown Christopher D. | 2026-10-07 | S | Sale | 30000 | 11.89 | 745,559 | 2 days | Filed terms
|
| Common Stock | Brown Christopher D. | 2026-10-07 | M | Exercise or conversion | 60000 | 1.75 | 805,559 | 2 days | Filed terms
|
| Stock Option (option to buy) (derivative) | Brown Christopher D. | 2026-10-07 | M | Exercise or conversion | 60000 | 0 | 54,318 | 2 days | Filed terms
|
Common Stock
- Owner
- Brown Christopher D.
- Date
- 2026-10-07
- Code
- S
- Action
- Sale
- Quantity
- 30000
- Price
- 11.89
- Following holdings
- 745,559
- Reporting delay
- 2 days
- Filed terms and references
Filed terms
- security Title: Common Stock
- transaction Date: 2026-10-07
- transaction Form Type: 4
- transaction Code: S
- equity Swap Involved: 0
- id: F1
- transaction Shares: 30000
- transaction Price Per Share: 11.89
- id: F2
- transaction Acquired Disposed Code: D
- shares Owned Following Transaction: 745559
- direct Or Indirect Ownership: D
- nature Of Ownership:
Common Stock
- Owner
- Brown Christopher D.
- Date
- 2026-10-07
- Code
- M
- Action
- Exercise or conversion
- Quantity
- 60000
- Price
- 1.75
- Following holdings
- 805,559
- Reporting delay
- 2 days
- Filed terms and references
Filed terms
- security Title: Common Stock
- transaction Date: 2026-10-07
- transaction Form Type: 4
- transaction Code: M
- equity Swap Involved: 0
- transaction Shares: 60000
- transaction Price Per Share: 1.75
- transaction Acquired Disposed Code: A
- shares Owned Following Transaction: 805559
- direct Or Indirect Ownership: D
- nature Of Ownership:
Stock Option (option to buy) (derivative)
- Owner
- Brown Christopher D.
- Date
- 2026-10-07
- Code
- M
- Action
- Exercise or conversion
- Quantity
- 60000
- Price
- 0
- Following holdings
- 54,318
- Reporting delay
- 2 days
- Filed terms and references
Filed terms
- security Title: Stock Option (option to buy)
- conversion Or Exercise Price: 1.75
- transaction Date: 2026-10-07
- transaction Form Type: 4
- transaction Code: M
- equity Swap Involved: 0
- transaction Shares: 60000
- transaction Price Per Share: 0
- transaction Acquired Disposed Code: D
- id: F3
- expiration Date: 2027-06-22
- underlying Security Title: Common Stock
- underlying Security Shares: 60000
- shares Owned Following Transaction: 54318
- direct Or Indirect Ownership: D
- nature Of Ownership:
Purchases, sales, grants and option exercises are different transactions. The reported code identifies the action; it does not establish a motive.
Filing context
- Quantities and prices are shown in the units filed. No trade value is inferred from their product.
- Brown Christopher D.: Director.
- The filing reports a Rule 10b5-1 trading plan.
- F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2025.
- F2: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.75 to $12.12 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
- F3: The shares underlying the option are fully vested and immediately exercisable.
Original sources
Prepared automatically from public filing data. Report a correction.