Tsao David
CIK: 0002087127•Chief Technology Officer
OfficerDirector
Primary company: BillionToOne, Inc. (BLLN)
Tsao David is a corporate insider (Chief Technology Officer) at BillionToOne, Inc. (BLLN) filing SEC Form 4 transactions. 71 transactions, totaling $60,000 in purchases and $0 in sales. Source: SEC EDGAR.
Companies
Transaction History
Source: SEC EDGAR Form 4 insider transaction filings.
Company | Type | Shares | Price | Value | Shares After | Date | SEC |
|---|---|---|---|---|---|---|---|
| Exercise | 10,000 | $2.80 | $28K | 536,667 | 10/5/2026 Filed: 10/5/2026 | Filing → | |
| Exercise | 10,000 | $2.80 | $28K | 546,667 | 10/5/2026 Filed: 10/5/2026 | Filing → | |
| Sale | 100 | $110.09 | $11K | 1,000 | 10/5/2026 Filed: 10/5/2026 | Filing → | |
| Sale | 1,829 | $109.14 | $200K | 1,100 | 10/5/2026 Filed: 10/5/2026 | Filing → | |
| Sale | 4,916 | $108.53 | $534K | 2,929 | 10/5/2026 Filed: 10/5/2026 | Filing → | |
| Sale | 2,200 | $107.47 | $236K | 7,845 | 10/5/2026 Filed: 10/5/2026 | Filing → | |
| Sale | 400 | $106.10 | $42K | 10,045 | 10/5/2026 Filed: 10/5/2026 | Filing → | |
| Sale | 555 | $105.56 | $59K | 10,445 | 10/5/2026 Filed: 10/5/2026 | Filing → | |
| Sale | 20 | $110.08 | $2K | 11,000 | 10/5/2026 Filed: 10/5/2026 | Filing → | |
| Sale | 2,921 | $109.00 | $318K | 11,020 | 10/5/2026 Filed: 10/5/2026 | Filing → | |
| Sale | 4,284 | $108.39 | $464K | 13,941 | 10/5/2026 Filed: 10/5/2026 | Filing → | |
| Sale | 1,909 | $107.19 | $205K | 18,225 | 10/5/2026 Filed: 10/5/2026 | Filing → | |
| Sale | 866 | $105.90 | $92K | 20,134 | 10/5/2026 Filed: 10/5/2026 | Filing → | |
| Exercise | 10,000 | $2.80 | $28K | 21,000 | 10/5/2026 Filed: 10/5/2026 | Filing → | |
| Exercise | 10,000 | $2.80 | $28K | 11,000 | 10/5/2026 Filed: 10/5/2026 | Filing → | |
| Exercise | 3,333 | $2.80 | $9K | 556,667 | 9/24/2026 Filed: 9/24/2026 | Filing → | |
| Sale | 3,333 | $125.00 | $417K | 1,000 | 9/24/2026 Filed: 9/24/2026 | Filing → | |
| Exercise | 3,333 | $2.80 | $9K | 4,333 | 9/24/2026 Filed: 9/24/2026 | Filing → | |
| Exercise | 10,000 | $2.80 | $28K | 560,000 | 9/9/2026 Filed: 9/9/2026 | Filing → | |
| Exercise | 10,000 | $2.80 | $28K | 570,000 | 9/9/2026 Filed: 9/9/2026 | Filing → |
Type
Exercise
Shares
10,000
Price
$2.80
Value
$28K
Type
Exercise
Shares
10,000
Price
$2.80
Value
$28K
Type
Sale
Shares
100
Price
$110.09
Value
$11K
Type
Sale
Shares
1,829
Price
$109.14
Value
$200K
Type
Sale
Shares
4,916
Price
$108.53
Value
$534K
Type
Sale
Shares
2,200
Price
$107.47
Value
$236K
Type
Sale
Shares
400
Price
$106.10
Value
$42K
Type
Sale
Shares
555
Price
$105.56
Value
$59K
Type
Sale
Shares
20
Price
$110.08
Value
$2K
Type
Sale
Shares
2,921
Price
$109.00
Value
$318K
Type
Sale
Shares
4,284
Price
$108.39
Value
$464K
Type
Sale
Shares
1,909
Price
$107.19
Value
$205K
Type
Sale
Shares
866
Price
$105.90
Value
$92K
Type
Exercise
Shares
10,000
Price
$2.80
Value
$28K
Type
Exercise
Shares
10,000
Price
$2.80
Value
$28K
Type
Exercise
Shares
3,333
Price
$2.80
Value
$9K
Type
Sale
Shares
3,333
Price
$125.00
Value
$417K
Type
Exercise
Shares
3,333
Price
$2.80
Value
$9K
Type
Exercise
Shares
10,000
Price
$2.80
Value
$28K
Type
Exercise
Shares
10,000
Price
$2.80
Value
$28K
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