Tsao David
SEC insider (Form 3/4/5 filer). CIK 0002087127. Chief Technology Officer at BillionToOne, Inc. (BLLN). 54 reported Form 4/5 transactions since Sep 2024; latest on Oct 5, 2026. Located in MENLO PARK, CA.
Companies Tsao David has filed insider reports for
- BillionToOne, Inc. (BLLN): Director, Officer, Chief Technology Officer
Tsao David
CIK: 0002087127
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
BillionToOne, Inc.
Discretionary Trading P&L
Holdings
Transaction History (54 total)
- Oct 5, 2026BLLN
BillionToOne, Inc.
SaleDirect555 shares at avg. $105.56$59K - Oct 5, 2026BLLN
BillionToOne, Inc.
SaleDirect400 shares at avg. $106.10$42K - Oct 5, 2026BLLN
BillionToOne, Inc.
SaleDirect20 shares at avg. $110.08$2K - Oct 5, 2026BLLN
BillionToOne, Inc.
ExerciseDirect10K shares at avg. $2.80$28K - Oct 5, 2026BLLN
BillionToOne, Inc.
ExerciseDirect10K shares at avg. $2.80$28K - Oct 5, 2026BLLN
BillionToOne, Inc.
SaleDirect866 shares at avg. $105.90$92K - Oct 5, 2026BLLN
BillionToOne, Inc.
SaleDirect1.9K shares at avg. $107.19$205K - Oct 5, 2026BLLN
BillionToOne, Inc.
SaleDirect4.3K shares at avg. $108.39$464K - Oct 5, 2026BLLN
BillionToOne, Inc.
SaleDirect2.9K shares at avg. $109.00$318K - Oct 5, 2026BLLN
BillionToOne, Inc.
SaleDirect2.2K shares at avg. $107.47$236K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Oct 5, 2026 | BLLN BillionToOne, Inc. | Sale | 555 | $105.56 | $58,585 | Direct |
| Oct 5, 2026 | BLLN BillionToOne, Inc. | Sale | 400 | $106.10 | $42,442 | Direct |
| Oct 5, 2026 | BLLN BillionToOne, Inc. | Sale | 20 | $110.08 | $2,202 | Direct |
| Oct 5, 2026 | BLLN BillionToOne, Inc. | Exercise | 10,000 | $2.80 | $28,000 | Direct |
| Oct 5, 2026 | BLLN BillionToOne, Inc. | Exercise | 10,000 | $2.80 | $28,000 | Direct |
| Oct 5, 2026 | BLLN BillionToOne, Inc. | Sale | 866 | $105.90 | $91,710 | Direct |
| Oct 5, 2026 | BLLN BillionToOne, Inc. | Sale | 1,909 | $107.19 | $204,635 | Direct |
| Oct 5, 2026 | BLLN BillionToOne, Inc. | Sale | 4,284 | $108.39 | $464,356 | Direct |
| Oct 5, 2026 | BLLN BillionToOne, Inc. | Sale | 2,921 | $109.00 | $318,398 | Direct |
| Oct 5, 2026 | BLLN BillionToOne, Inc. | Sale | 2,200 | $107.47 | $236,435 | Direct |
1-10 of 54 transactions