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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.

Date Insider Transaction Shares Price Value Owned after
2026-08-26 KOLLURI KRISHNA KITTU Director Other acquisition +719 2,157
2026-08-26 KOLLURI KRISHNA KITTU Director Other acquisition +719 2,157
2026-08-26 KOLLURI KRISHNA KITTU Director Other acquisition +5,761 35,285
2026-08-26 KOLLURI KRISHNA KITTU Director Other acquisition +1,666 36,951
2026-08-26 KOLLURI KRISHNA KITTU Director Other acquisition +15,244 52,195
2026-08-26 KOLLURI KRISHNA KITTU Director Other acquisition +5,644 57,839
2026-08-25 Tsao David Chief Technology Officer Option exercise 10b5-1 +10,000 $2.80 $28K 11,000
2026-08-25 Tsao David Chief Technology Officer Sale 10b5-1 −10,000 $100.00 $1.0M 1,000
2026-08-25 Tsao David Chief Technology Officer Option exercise · Stock Option (right to buy) 10b5-1 −10,000 $2.80 $28K 580,000
2026-08-25 ten Bosch John Roderick SVP of Laboratory Operations Sale 10b5-1 −1,417 $100.00 $142K 26,467
2026-08-10 ten Bosch John Roderick SVP of Laboratory Operations Sale 10b5-1 −1,417 $92.86 $132K 27,884
2026-08-10 Tsao David Chief Technology Officer Option exercise 10b5-1 +10,000 $2.80 $28K 11,000
2026-08-10 Tsao David Chief Technology Officer Sale 10b5-1 −10,000 $92.86 $929K 1,000
2026-08-10 Tsao David Chief Technology Officer Option exercise · Stock Option (right to buy) 10b5-1 −10,000 $2.80 $28K 590,000
2026-08-05 Atay Oguzhan Chairman and CEO Option exercise 10b5-1 +15,539 $2.80 $44K 15,539
2026-08-05 Atay Oguzhan Chairman and CEO Sale 10b5-1 −15,539 $150.03 $2.3M 0
2026-08-05 Atay Oguzhan Chairman and CEO Option exercise · Stock Option (right to buy) 10b5-1 −15,539 $2.80 $44K 526,961
2026-08-03 Atay Oguzhan Chairman and CEO Option exercise 10b5-1 +20,000 $2.80 $56K 20,000
2026-08-03 Atay Oguzhan Chairman and CEO Option exercise 10b5-1 +6,250 $2.80 $18K 26,250
2026-08-03 Atay Oguzhan Chairman and CEO Option exercise 10b5-1 +6,250 $2.80 $18K 32,500

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