Tsao David

CIK: 0002087127Chief 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.

Total Transactions
38
Total Buy Value
$60K
Total Sell Value
$0
Net Activity
+$60K
Last Transaction
Jul 2026
Companies
1

Companies

Transaction History

Source: SEC EDGAR Form 4 insider transaction filings.

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