BillionToOne, Inc. executives sold significant company stock on September 12, 2026. Chief Technology Officer David Tsao sold shares valued at approximately $1.97 million. Senior Vice President John ten Bosch sold shares totaling $138,116. These transactions were executed under pre-arranged Rule 10b5-1 trading plans following stock option exercises.
The company's second-quarter earnings recently exceeded analyst expectations for both revenue and earnings per share. BillionToOne's stock has delivered a substantial return over the past six months.
Shares declined in after-hours trading despite the strong financial results. Investors cited concerns regarding the company's future growth prospects as the primary driver for the decline.