Lynch Thomas P., General Counsel, Chief Compliance Officer and Secretary exercised 19,384 shares of BillionToOne, Inc. ($BLLN) @ $8.65 ($167,671.60 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$8.65-60.3% above low, 160.3% below high

52W High$150.44

19,384

Price

$8.65

Total Value

$167,671.60

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	Jan 18, 2033
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	19,384
Price per Share	$8.65
Total Value	$167,671.60
Shares Owned After	48,974
Derivative	Derivative (Class A Common Stock)
Accession Number	0002070849-26-000069
Document	View SEC Filing