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. 38 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 | 600,000 | 7/13/2026 Filed: 7/13/2026 | Filing → | |
| Exercise | 10,000 | $2.80 | $28K | 610,000 | 7/13/2026 Filed: 7/13/2026 | Filing → | |
| Sale | 1,028 | $126.90 | $130K | 1,000 | 7/13/2026 Filed: 7/13/2026 | Filing → | |
| Sale | 3,835 | $125.76 | $482K | 2,028 | 7/13/2026 Filed: 7/13/2026 | Filing → | |
| Sale | 1,725 | $124.65 | $215K | 5,863 | 7/13/2026 Filed: 7/13/2026 | Filing → | |
| Sale | 2,274 | $123.71 | $281K | 7,588 | 7/13/2026 Filed: 7/13/2026 | Filing → | |
| Sale | 1,138 | $122.84 | $140K | 9,862 | 7/13/2026 Filed: 7/13/2026 | Filing → | |
| Sale | 821 | $126.89 | $104K | 11,000 | 7/13/2026 Filed: 7/13/2026 | Filing → | |
| Sale | 3,185 | $125.85 | $401K | 11,821 | 7/13/2026 Filed: 7/13/2026 | Filing → | |
| Sale | 2,415 | $124.90 | $302K | 15,006 | 7/13/2026 Filed: 7/13/2026 | Filing → | |
| Sale | 2,477 | $123.84 | $307K | 17,421 | 7/13/2026 Filed: 7/13/2026 | Filing → | |
| Sale | 1,102 | $122.90 | $135K | 19,898 | 7/13/2026 Filed: 7/13/2026 | Filing → | |
| Exercise | 10,000 | $2.80 | $28K | 21,000 | 7/13/2026 Filed: 7/13/2026 | Filing → | |
| Exercise | 10,000 | $2.80 | $28K | 11,000 | 7/13/2026 Filed: 7/13/2026 | Filing → | |
| Exercise | 10,000 | $2.80 | $28K | 620,000 | 6/15/2026 Filed: 6/15/2026 | Filing → | |
| Exercise | 10,000 | $2.80 | $28K | 630,000 | 6/15/2026 Filed: 6/15/2026 | Filing → | |
| Sale | 563 | $104.32 | $59K | 1,000 | 6/15/2026 Filed: 6/15/2026 | Filing → | |
| Sale | 2,398 | $103.63 | $249K | 1,563 | 6/15/2026 Filed: 6/15/2026 | Filing → | |
| Sale | 2,978 | $102.60 | $306K | 3,961 | 6/15/2026 Filed: 6/15/2026 | Filing → | |
| Sale | 2,461 | $101.37 | $249K | 6,939 | 6/15/2026 Filed: 6/15/2026 | Filing → |
Type
Exercise
Shares
10,000
Price
$2.80
Value
$28K
Type
Exercise
Shares
10,000
Price
$2.80
Value
$28K
Type
Sale
Shares
1,028
Price
$126.90
Value
$130K
Type
Sale
Shares
3,835
Price
$125.76
Value
$482K
Type
Sale
Shares
1,725
Price
$124.65
Value
$215K
Type
Sale
Shares
2,274
Price
$123.71
Value
$281K
Type
Sale
Shares
1,138
Price
$122.84
Value
$140K
Type
Sale
Shares
821
Price
$126.89
Value
$104K
Type
Sale
Shares
3,185
Price
$125.85
Value
$401K
Type
Sale
Shares
2,415
Price
$124.90
Value
$302K
Type
Sale
Shares
2,477
Price
$123.84
Value
$307K
Type
Sale
Shares
1,102
Price
$122.90
Value
$135K
Type
Exercise
Shares
10,000
Price
$2.80
Value
$28K
Type
Exercise
Shares
10,000
Price
$2.80
Value
$28K
Type
Exercise
Shares
10,000
Price
$2.80
Value
$28K
Type
Exercise
Shares
10,000
Price
$2.80
Value
$28K
Type
Sale
Shares
563
Price
$104.32
Value
$59K
Type
Sale
Shares
2,398
Price
$103.63
Value
$249K
Type
Sale
Shares
2,978
Price
$102.60
Value
$306K
Type
Sale
Shares
2,461
Price
$101.37
Value
$249K
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