Billiontoone, INC Form 4 insider transactions

Oguzhan Atay, Chairman and CEO and a Director of BillionToOne, Inc., sold 10,999 shares of common stock on September 28, 2026 for $120.64 per share.

David Tsao, Chief Technology Officer and a Director of BillionToOne, Inc., sold 3,333 shares of common stock on September 24, 2026 for $125.00 per share.

Bosch John Roderick Ten, SVP of Laboratory Operations of BillionToOne, Inc., sold 1,416 shares of common stock on September 24, 2026 for $120.00 per share.

Bosch John Roderick Ten, SVP of Laboratory Operations of BillionToOne, Inc., sold 1,416 shares of common stock on September 21, 2026 for $106.61 per share.

Thomas P. Lynch, See Remarks of BillionToOne, Inc., sold 35,112 shares of common stock on September 17, 2026.

Oguzhan Atay, Chairman and CEO and a Director of BillionToOne, Inc., sold 30,331 shares of common stock on September 14, 2026.

Shan Riku Sakakibara, Chief Product Officer of BillionToOne, Inc., reported a transaction in 3,500 shares of common stock on September 10, 2026.

Bosch John Roderick Ten, SVP of Laboratory Operations of BillionToOne, Inc., sold 1,416 shares of common stock on September 9, 2026 for $97.54 per share.

David Tsao, Chief Technology Officer and a Director of BillionToOne, Inc., sold 20,000 shares of common stock on September 9, 2026.

Thomas P. Lynch, See Remarks of BillionToOne, Inc., sold 20,000 shares of common stock on September 8, 2026.

Oguzhan Atay, Chairman and CEO and a Director of BillionToOne, Inc., reported multiple transactions in common stock on September 8, 2026.

David Tsao, Chief Technology Officer and a Director of BillionToOne, Inc., reported multiple transactions in common stock on September 3, 2026.

Krishna Kittu Kolluri, a Director of BillionToOne, Inc., reported multiple transactions in common stock on August 26, 2026.

David Tsao, Chief Technology Officer and a Director of BillionToOne, Inc., sold 10,000 shares of common stock on August 25, 2026 for $100.00 per share.

Bosch John Roderick Ten, SVP of Laboratory Operations of BillionToOne, Inc., sold 1,417 shares of common stock on August 25, 2026 for $100.00 per share.

Bosch John Roderick Ten, SVP of Laboratory Operations of BillionToOne, Inc., sold 1,417 shares of common stock on August 10, 2026 for $92.86 per share.

David Tsao, Chief Technology Officer and a Director of BillionToOne, Inc., sold 10,000 shares of common stock on August 10, 2026 for $92.86 per share.

Oguzhan Atay, Chairman and CEO and a Director of BillionToOne, Inc., sold 15,539 shares of common stock on August 5, 2026 for $150.03 per share.

Oguzhan Atay, Chairman and CEO and a Director of BillionToOne, Inc., sold 45,000 shares of common stock on August 3, 2026.

Nancy Joann Johnson, See Remarks of BillionToOne, Inc., sold 14,199 shares of common stock on July 16, 2026.

Bosch John Roderick Ten, SVP of Laboratory Operations of BillionToOne, Inc., sold 4,251 shares of common stock on July 13, 2026 for $125.46 per share.

David Tsao, Chief Technology Officer and a Director of BillionToOne, Inc., sold 20,000 shares of common stock on July 13, 2026.

Oguzhan Atay, Chairman and CEO and a Director of BillionToOne, Inc., sold 12,500 shares of common stock on July 9, 2026.

Shan Riku Sakakibara, Chief Product Officer of BillionToOne, Inc., sold 8,000 shares of common stock on July 9, 2026 for $125.00 per share.

BillionToOne CEO Oguzhan Atay reported transactions involving Class A Common Stock, including acquisitions and sales executed under a Rule 10b5-1 trading plan.

Nancy JoAnn Johnson, Senior Vice President of Sales and Commercial Operations at BillionToOne, Inc., reported the sale of 801 shares of Class A Common Stock for $124.9137 per share, executed under a pre-arranged 10b5-1 trading plan.

John Roderick ten Bosch, SVP of Laboratory Operations at BillionToOne, Inc., reported transactions involving Class A Common Stock under a Rule 10b5-1 trading plan.

BillionToOne Chief Product Officer Shan Riku Sakakibara executed a Rule 10b5-1 plan transaction involving Class A Common Stock.

John Roderick ten Bosch, Senior VP of Laboratory Operations at BillionToOne, sold 2,832 shares of Class A Common Stock via a 10b5-1 trading plan.

Chief Technology Officer David Tsao exercised 20,000 stock options and sold a portion of the resulting shares under a Rule 10b5-1 plan.