BillionToOne chairman & CEO Atay sells $1.56m; spouse sells $260k

Atay, the Chairman and CEO of BillionToOne, Inc., made significant stock transactions on October 12, 2026. He exercised his stock options and sold the acquired shares, generating approximately $1.56 million in proceeds. Moreover, shares held indirectly by his spouse were sold for about $260,325, as part of a pre-planned Rule 10b5-1 trading strategy.

Both transactions took place on the same day, at a time when the company's stock was trading near its highest price point. BillionToOne continues to exhibit robust financial health with a substantial market capitalization of $4.46 billion. The company's recent financial performance exceeded expectations, with a notable surge in revenue, but its stock price saw a decline amid investor concerns about future growth prospects.