4processed

Form 4 — Insider Transaction

BillionToOne, Inc.(BLLN)

Filing Date

June 24, 2026

Accepted

June 24, 2026

Accession No.

0002088547-26-000004

CIK

0002070849

Insider Transactions

InsiderTitleTypeSharesPriceValueOwned AfterSecurityDate
Sakakibara Shan RikuChief Product OfficerOther4.0K$8.65216.0KClass A Common StockJun 24, 2026
Sakakibara Shan RikuChief Product OfficerOther4.0K$110212.0KClass A Common StockJun 24, 2026
Sakakibara Shan RikuChief Product OfficerOther4.0K$110208.0KClass A Common StockJun 24, 2026
Sakakibara Shan RikuChief Product OfficerOther4.0K$8.6536.0KStock Option (right to buy)Jun 24, 2026