Oguzhan Atay, Director, Chairman and Chief Executive Officer, on September 14, 2026, sold 30,331 shares in BillionToOne (BLLN) for $3,030,444. Following the Form 4 filing with the SEC, Atay has control over a total of 157,168 Class A common shares of the company, with 157,168 controlled indirectly.
SEC Filing: