BillionToOne CEO Oguzhan Atay sells $2.5m in company stock

Oguzhan Atay, Chairman and CEO of BillionToOne, Inc., sold 24,059 shares of Class A Common Stock on September 14, 2026, for $2.5 million. The sales occurred under a pre-approved Rule 10b5-1 trading plan. Each share was sold between $98.6314 and $101.4919, generating a total of $2,507,908. Following these transactions, Atay no longer owned any Class A Common Stock directly.

Meanwhile, his spouse also sold 5,332 shares on the same date, earning $522,536 through a separate Rule 10b5-1 plan. After these sales, Atay indirectly owned 157,168 shares through his spouse. Earlier, Atay exercised options to buy 24,999 shares at $2.8 per share, totaling $69,997. BillionToOne shares have surged 48.5% over the past six months, reaching $103.61.

Analysts consider the stock overvalued, placing it among highly valued stocks. BillionToOne reported second-quarter earnings that surpassed expectations, with a per-share profit of $0.15, up from the forecasted $0.03. Revenue increased 64% to $109.4 million. Despite this growth, the stock saw a sharp decline in after-hours trading, possibly due to investor concerns about the company's future outlook and growth sustainability.

Canaccord Genuity initiated coverage on BillionToOne with a buy rating and a price target of $120.00, citing the company's proprietary technologies in prenatal and oncology diagnostics.