June 8, 2026 · Form 4 insider transaction
Sakakibara Shan Riku sold 4,000 shares of BillionToOne, Inc. at $96.45 per share, a transaction worth $385.8K. The trade was recorded as open-market sale under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 2 days after the transaction.
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.