AlphaYouBLLN: Tsao David discloses securities transactions
By AlphaYouPublished Form 4
Tsao David
Reporting filer
Tsao David reported Exercise or conversion in BillionToOne, Inc.: 3333 units of Class A Common Stock, dated 2026-09-24. The full Form 4 contains 3 transaction entries.
- Disclosed
- Sep 28, 2026
Reported details
3 entries| Security | Owner | Date | Code | Action | Quantity | Price | Following holdings | Reporting delay | Filed terms and references |
|---|---|---|---|---|---|---|---|---|---|
| Class A Common Stock | Tsao David | 2026-09-24 | M | Exercise or conversion | 3333 | 2.80 | 4,333 | 4 days | Filed terms
|
| Class A Common Stock | Tsao David | 2026-09-24 | S | Sale | 3333 | 125 | 1,000 | 4 days | Filed terms
|
| Stock Option (right to buy) (derivative) | Tsao David | 2026-09-24 | M | Exercise or conversion | 3333 | 2.80 | 556,667 | 4 days | Filed terms
|
Class A Common Stock
- Owner
- Tsao David
- Date
- 2026-09-24
- Code
- M
- Action
- Exercise or conversion
- Quantity
- 3333
- Price
- 2.80
- Following holdings
- 4,333
- Reporting delay
- 4 days
- Filed terms and references
Filed terms
- security Title: Class A Common Stock
- transaction Date: 2026-09-24
- transaction Form Type: 4
- transaction Code: M
- equity Swap Involved: 0
- id: F1
- transaction Shares: 3333
- transaction Price Per Share: 2.80
- transaction Acquired Disposed Code: A
- shares Owned Following Transaction: 4333
- direct Or Indirect Ownership: D
Class A Common Stock
- Owner
- Tsao David
- Date
- 2026-09-24
- Code
- S
- Action
- Sale
- Quantity
- 3333
- Price
- 125
- Following holdings
- 1,000
- Reporting delay
- 4 days
- Filed terms and references
Filed terms
- security Title: Class A Common Stock
- transaction Date: 2026-09-24
- transaction Form Type: 4
- transaction Code: S
- equity Swap Involved: 0
- id: F1
- transaction Shares: 3333
- transaction Price Per Share: 125
- transaction Acquired Disposed Code: D
- shares Owned Following Transaction: 1000
- direct Or Indirect Ownership: D
Stock Option (right to buy) (derivative)
- Owner
- Tsao David
- Date
- 2026-09-24
- Code
- M
- Action
- Exercise or conversion
- Quantity
- 3333
- Price
- 2.80
- Following holdings
- 556,667
- Reporting delay
- 4 days
- Filed terms and references
Filed terms
- security Title: Stock Option (right to buy)
- conversion Or Exercise Price: 2.80
- transaction Date: 2026-09-24
- transaction Form Type: 4
- transaction Code: M
- equity Swap Involved: 0
- transaction Shares: 3333
- transaction Price Per Share: 2.80
- transaction Acquired Disposed Code: D
- id: F2
- expiration Date: 2031-06-07
- underlying Security Title: Class A Common Stock
- underlying Security Shares: 3333
- shares Owned Following Transaction: 556667
- direct Or Indirect Ownership: D
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.
- Tsao David: Chief Technology Officer, Director.
- The filing reports a Rule 10b5-1 trading plan.
- F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 5, 2026.
- F2: The options are fully vested and exercisable.
Original sources
Prepared automatically from public filing data. Report a correction.