BillionToOne Chief Product Officer Sakakibara Shan Riku disposes of 8,000 common shares for $1 million

• BillionToOne Chief Product Officer Sakakibara Shan Riku reported option exercises and stock sales on July 9, 2026.
• Exercised options for 4,000 Class A shares at USD 8.65 to USD 30.78.
• Sold 8,000 Class A shares at USD 125.
• Directly owned 204,000 Class A shares after the transactions.

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