• BillionToOne Chief Technology Officer David Tsao exercised options for 20,000 Class A shares at USD 2.8 on June 15, 2026.
• Tsao sold 19,000 Class A shares the same day at weighted-average prices of about USD 98.74 to USD 104.47.
• Directly held Class A shares ended at 1,000 following the transactions.
• Directly held stock options ended at 620,000, with an additional 630,000 options also reported.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Billiontoone Inc. published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0002087127-26-000002), on June 17, 2026, and is solely responsible for the information contained therein.