Lynch Thomas P., General Counsel, Chief Compliance Officer and Secretary exercised 2,920 shares of BillionToOne, Inc. ($BLLN) @ $17.12 ($49,990.40 total) on Sep 17, 2026

Lynch Thomas P. – General Counsel, Chief Compliance Officer and Secretary

Sep 17, 2026

52W Low$61.96

Current$114.4259.3% above low, 40.7% below high

Purchase$17.12-50.7% above low, 150.7% below high

52W High$150.44

2,920

Price

$17.12

Total Value

$49,990.40

Nearby Earnings

No earnings within 2 weeks of this transaction.

Insider	Lynch Thomas P.
Title	General Counsel, Chief Compliance Officer and Secretary
Transaction Date	Sep 17, 2026
Expiration Date	Oct 16, 2034
Transaction Code	M Exercise/Conversion
Acquired/Disposed	Disposed
Security	Stock Option (right to buy) (Class A Common Stock)
Derivative	Yes
Direct/Indirect	Direct
Filing Date	Sep 21, 2026
Shares Purchased	2,920
Price per Share	$17.12
Total Value	$49,990.40
Shares Owned After	5,417
Derivative	Derivative (Class A Common Stock)
Accession Number	0002070849-26-000069
Document	View SEC Filing