CTO David Tsao sells 20,000 shares for $2.0M via 11 scheduled transactions on 2026-06-15
David Tsao, Chief Technology Officer at BillionToOne, Inc., executed 11 separate sales totaling 20,000 shares for $2,045,325.51 ($2.0M) on 2026-06-15 at a blended average price of $102.27, reducing his non-derivative holdings from 21,000 shares to 1,000 shares (-95.2% vs pre-transaction holdings). This transaction is part of a pre-arranged 10b5-1 trading plan adopted on 2026-03-06, meaning the sales were scheduled and not discretionary. The insider retains significant derivative holdings comprising 1,250,000 shares in stock options (630,000 shares and 620,000 shares remaining), representing meaningful ongoing economic exposure to the company. The current share price of $99.38 sits 28.4% below the 52-week high of $138.70, and the 30-day price change is +15.4% while the 90-day change is +34.3%, providing recent market context for the transaction execution.