Trade Summary

4 days ago, Sakakibara Shan Riku, serving as Chief Product Officer at BillionToOne, Inc. (BLLN), sold 4,000 shares at $140.21 per share, for a total transaction value of $560,840.00. Following this transaction, Sakakibara Shan Riku now holds 200,000 shares of BLLN.

This sale represents a 1.96% decrease in Sakakibara Shan Riku's stake in the company. This is considered a medium-conviction trade.

The trade was executed on Friday, July 31, 2026 and publicly disclosed via SEC Form 4 filing on Tuesday, August 4, 2026 at 4:32 PM ET, 4 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.