Tsao David bought BLLN
September 24, 2026 · Form 4 insider transaction
Tsao David bought 3,333 shares of BillionToOne, Inc. at $2.80 per share, a transaction worth $9.3K. The trade was recorded as option exercise under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 4 days after the transaction.
Direction
Acquired (buy-side)
Shares
3,333
Price
$2.80
Total value
$9.3K
InsiderTsao David
RoleOfficer, Director
CompanyBillionToOne, Inc. (BLLN)
SecurityClass A Common Stock
Transaction codeM: Option exercise
Transaction dateSeptember 24, 2026
Filing dateSeptember 28, 2026
Shares owned after4,333
OwnershipDirect
10b5-1 planYes
AmendedNo
Footnotes
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.