BLLN BillionToOne, Inc. Insider Trading

CPO Sakakibara sells 8,000 shares ($785.8K) via scheduled 10b5-1 plan; retains 212,000 shares post-transaction

Shan Riku Sakakibara, Chief Product Officer, executed 2 separate sales totaling 8,000 shares for $785,800.00 on 2026-06-08, reducing his holdings from 220,000 to 212,000 shares. The transaction was conducted under a pre-arranged 10b5-1 trading plan adopted on 2026-03-06, meaning it was scheduled rather than discretionary. The blended average price of $98.22 compares closely to the current price of $99.26, with the stock trading 28.4% below its 52-week high of $138.70. BillionToOne demonstrates strong fundamentals with annual revenue growth of +100.0% and a market cap of $1,109,574,634.42, though the P/E of 37.74 reflects premium valuation typical of high-growth companies.

Nancy Joann Johnson sold 14,000 shares ($1.4M) at BLLN in 7 transactions under pre-arranged 10b5-1 plan on 2026-06-08/09

Nancy Joann Johnson executed 7 separate sales totaling 14,000 shares for $1,402,539.80 on June 8–9, 2026, reducing her holdings from 35,900 to 21,900 shares (-39.0%). The trades were conducted under a pre-arranged 10b5-1 trading plan adopted on 2026-03-06, meaning they were scheduled rather than discretionary. While the blended average sale price of $100.18 sits modestly above the current price of $99.26, the stock has declined -28.4% from its 52-week high of $138.70, suggesting the insider sold into relative weakness compared to recent peaks. BillionToOne's fundamentals remain solid with annual revenue growth of +100.0%, a $1.1B market cap, and positive net income of $17,970,000.00, though the P/E of 37.74 reflects a premium valuation.

Oguzhan Atay sells 38,750 shares for $3,791,445.43 via 10b5-1 plan; retains 187,500 non-derivative shares plus options/Class B holdings

Oguzhan Atay executed 10 separate sales totaling 38,750 shares for $3,791,445.43 on 2026-06-08 under a pre-arranged 10b5-1 trading plan adopted on 2026-03-06. This represents a -17.1% reduction in non-derivative holdings, bringing post-transaction shares to 187,500. However, the insider retains significant derivative exposure through 620,000 stock options, 613,750 stock options, and 2,217,542 Class B Common Stock shares. The stock has appreciated +55.0% over the past 90 days and trades at $99.26, down -28.4% from its 52-week high of $138.70. With the company posting 100% annual revenue growth and a market cap of $1,109,574,634.42, the scheduled nature of this trade under a pre-arranged 10b5-1 plan means the sale reflects automatic execution rather than discretionary conviction or timing judgment.