Sign in

CIK 0002070849 · Non-accelerated filer<br>Emerging growth company

BillionToOne, Inc.

Sign in to watch
Ticker
BLLN
Exchange
Nasdaq
Industry
Services-Medical Laboratories
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
811082020
Phone
650-460-2551
Business address
1035 O'BRIEN DRIVE, MENLO PARK, CA
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$26,737,121
in 19 filings, $26.7M under 10b5-1 plans

Net −$26,737,121. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. Atay Oguzhan −$11.9M Chairman and CEO sold 44% of stake
  2. Tsao David −$7.7M Chief Technology Officer sold 99% of stake
  3. Lynch Thomas P. −$5.9M See Remarks sold 99% of stake
  4. ten Bosch John Roderick −$1.2M SVP of Laboratory Operations sold 41% of stake
Date Insider Transaction Shares Price Value Owned after
2025-11-07 Bremner Thomas S Director Other acquisition +155,711 155,711
2025-11-07 Bremner Thomas S Director Other acquisition +176,271 176,271
2025-11-07 Bremner Thomas S Director Other acquisition +269,918 269,918
2025-11-07 Bremner Thomas S Director Other acquisition +240,072 240,072
2025-11-07 Bremner Thomas S Director Other acquisition +675,352 675,352
2025-11-07 Bremner Thomas S Director Other acquisition +277,508 277,508
2025-11-07 Bremner Thomas S Director Purchase +4,016 $60.00 $241K 156,456
2025-11-07 Bremner Thomas S Director Purchase +4,084 $60.00 $245K 159,795
2025-11-07 Bremner Thomas S Director Purchase +3,462 $60.00 $208K 179,733
2025-11-07 Bremner Thomas S Director Purchase +5,446 $60.00 $327K 275,364
2025-11-07 Bremner Thomas S Director Purchase +6,867 $60.00 $412K 246,939
2025-11-07 Bremner Thomas S Director Purchase +17,791 $60.00 $1.1M 693,143
2025-11-07 Bremner Thomas S Director Conversion · Series A-1 Convertible Preferred Stock −1,352 0
2025-11-07 Bremner Thomas S Director Conversion · Series C Convertible Preferred Stock −114,117 0
2025-11-07 Bremner Thomas S Director Conversion · Series C-1 Convertible Preferred Stock −16,747 0
2025-11-07 Bremner Thomas S Director Conversion · Series D Convertible Preferred Stock −20,224 0
2025-11-07 Bremner Thomas S Director Conversion · Series C Convertible Preferred Stock −121,688 0
2025-11-07 Bremner Thomas S Director Conversion · Series C-1 Convertible Preferred Stock −17,858 0
2025-11-07 Bremner Thomas S Director Conversion · Series D Convertible Preferred Stock −16,165 0
2025-11-07 Bremner Thomas S Director Conversion · Series A-1 Convertible Preferred Stock −1,562 0

Page 30 of 32 · 639 trades