Oguzhan Atay sold $3.3M of BLLN stock

Oguzhan Atay, Chairman and CEO of BillionToOne, Inc. (BLLN), sold 30,335 shares of BLLN stock worth $3.3M, per an SEC Form 4 filed Nov 5, 2026.

The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.

The trade happened on Nov 2, 2026, 3 days before it was made public.

BLLN has moved +3.2% since the trade date, from $110.41 to $113.94 (Nov 6, 2026 close).