Trade Summary

3 days ago, Tsao David, serving as Chief Technology Officer at BillionToOne, Inc. (BLLN), sold 20,000 shares at $124.88 per share, for a total transaction value of $2,497,697.55. Following this transaction, Tsao David now holds 1,000 shares of BLLN.

This sale represents a 95.24% decrease in Tsao David's stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Monday, July 13, 2026 and publicly disclosed via SEC Form 4 filing on Wednesday, July 15, 2026 at 4:38 PM ET, 2 days after the trade was made.

BillionToOne, Inc. operates in the HEALTHCARE sector, specifically within the DIAGNOSTICS & RESEARCH industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.