Sakakibara Shan Riku sold BLLN
July 31, 2026 · Form 4 insider transaction
Sakakibara Shan Riku sold 4,000 shares of BillionToOne, Inc. at $140.21 per share, a transaction worth $560.8K. The trade was recorded as open-market sale under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 4 days after the transaction.
Direction
Disposed (sell-side)
Shares
4,000
Price
$140.21
Total value
$560.8K
InsiderSakakibara Shan Riku
RoleOfficer
CompanyBillionToOne, Inc. (BLLN)
SecurityClass A Common Stock
Transaction codeS: Open-market sale
Transaction dateJuly 31, 2026
Filing dateAugust 4, 2026
Shares owned after200,000
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.