Tsao David sold BLLN

August 10, 2026 · Form 4 insider transaction

Tsao David sold 10,000 shares of BillionToOne, Inc. at $92.86 per share, a transaction worth $928.6K. The trade was recorded as open-market sale under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 2 days after the transaction.

Direction
Disposed (sell-side)
Shares
10,000
Price
$92.86
Total value
$928.6K
InsiderTsao David
RoleOfficer, Director
SecurityClass A Common Stock
Transaction codeS: Open-market sale
Transaction dateAugust 10, 2026
Filing dateAugust 12, 2026
Shares owned after1,000
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 March 6, 2026.

View the original Form 4 on SEC EDGAR