BLLN

BillionToOne, Inc.

Latest Form 4:Sale$1.0MbyTsao David (Chief Technology Officer) · filed Aug 28, 2026

BillionToOne, Inc. (BLLN) has 45 SEC Form 4 filings (331 transaction rows) in the rolling window, disclosed by 8 distinct insiders. Most recent filing: Aug 28, 2026.

The most active filer is SVP of Laboratory Operations ten Bosch John Roderick with 6 filings. Insiders have net sold $30.2M over the trailing 6 months.

  • Industry:Medical - Diagnostics & Research
  • CEO:Oguzhan Atay
  • Employees:620
  • HQ:Menlo Park, CA, US
  • IPO:2025-11-06

Insider Buying

$3.2M

reported purchases (SEC code P)

Insider Selling

$30.2M

reported sales (SEC code S)

Unique Insiders

8

in the rolling window

Market Cap

$5.1B

latest known value

Source
Sale$1.0MAug 28SEC ↗
Sale$142KAug 28SEC ↗
Sale$132KAug 12SEC ↗
Sale$929KAug 12SEC ↗
Sale$2.3MAug 7SEC ↗
Sale$5.3MAug 6SEC ↗
Sale$561KAug 4SEC ↗
Sale$1.8MJul 20SEC ↗
Sale$2.5MJul 15SEC ↗
Sale$178KJul 15SEC ↗
Sale$1.6MJul 13SEC ↗
Sale$1.0MJul 13SEC ↗
Sale$4.4MJul 8SEC ↗
Sale$100KJul 7SEC ↗
Sale$170KJul 1SEC ↗
Sale$440KJun 26SEC ↗
ten Bosch John RoderickFirst in 7 months
Sale$144KJun 17SEC ↗
Tsao DavidFirst in 7 months
Sale$2.0MJun 17SEC ↗
Sale$786KJun 11SEC ↗
Johnson Nancy JoAnnFirst in 7 months
Sale$339KJun 11SEC ↗
Johnson Nancy JoAnnFirst in 7 months
Sale$1.1MJun 11SEC ↗
Atay OguzhanFirst filing
Sale$3.2MJun 11SEC ↗
Purchase$414KNov 12SEC ↗
Purchase$48KNov 12SEC ↗
Lynch Thomas P.First filing
Purchase$6KNov 12SEC ↗
Tsao DavidFirst filing
Purchase$60KNov 12SEC ↗
Rai AkshayFirst filing
Purchase$150KNov 12SEC ↗
Bremner Thomas SFirst filing
Purchase$2.5MNov 10SEC ↗

Related companies

BillionToOne, Inc. is in the Healthcare sector.