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

BillionToOne, Inc.

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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
2026-05-11 NeoTribe Ventures I, L.P. 10% owner Other acquisition +7,980 7,980
2026-05-11 NeoTribe Ventures I, L.P. 10% owner Other disposition −7,980 0
2026-05-11 NeoTribe Ventures I, L.P. 10% owner Other disposition −24,222 217,994
2026-05-11 NeoTribe Ventures I, L.P. 10% owner Other acquisition +1,425 1,425
2026-05-11 NeoTribe Ventures I, L.P. 10% owner Other disposition −1,425 0
2026-05-11 NeoTribe Ventures I, L.P. 10% owner Other disposition −271,028 2,439,258
2026-05-11 NeoTribe Ventures I, L.P. 10% owner Other acquisition +5,423 5,423
2026-05-11 NeoTribe Ventures I, L.P. 10% owner Other disposition −5,423 0
2026-05-11 NeoTribe Ventures I, L.P. 10% owner Other disposition −10,921 98,283
2026-05-11 KOLLURI KRISHNA KITTU Director Other disposition −129,780 1,168,019
2026-05-11 KOLLURI KRISHNA KITTU Director Other acquisition +7,980 7,980
2026-05-11 KOLLURI KRISHNA KITTU Director Other disposition −7,980 0
2026-05-11 KOLLURI KRISHNA KITTU Director Other disposition −24,222 217,994
2026-05-11 KOLLURI KRISHNA KITTU Director Other acquisition +1,425 1,425
2026-05-11 KOLLURI KRISHNA KITTU Director Other disposition −1,425 0
2026-05-11 KOLLURI KRISHNA KITTU Director Other disposition −271,028 2,439,258
2026-05-11 KOLLURI KRISHNA KITTU Director Other acquisition +5,423 5,423
2026-05-11 KOLLURI KRISHNA KITTU Director Other disposition −5,423 0
2026-05-11 KOLLURI KRISHNA KITTU Director Other disposition −10,921 98,283
2026-05-11 KOLLURI KRISHNA KITTU Director Other acquisition +719 719

Page 20 of 32 · 639 trades