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Reporting owner

Atay Oguzhan

Reporting owner CIK 0002088549 · Chairman and CEO · Director

View SEC filings ↗

These transactions appear in filings associated with this reporting owner. Jointly reported quantities and amounts are unallocated; they are not this owner's individual purchases or total holdings. Names and roles reflect the relevant filing, and a reporting owner may be a person or an organization.

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Transaction timeline

Who reported an acquisition, and when the transaction occurred.

Reported acquisitions by transaction dateEach row is a reporting owner. Select a marker to open its transaction details. Jointly reported transactions appear for each associated reporting owner, without dividing quantities or amounts.Atay OguzhanAtay OguzhanAtay Oguzhan · October 15, 2026 · Exercise / conversion · Class A Common StockAtay Oguzhan · October 14, 2026 · Exercise / conversion · Class A Common StockAtay Oguzhan · October 12, 2026 · Exercise / conversion · Class A Common StockAtay Oguzhan · November 7, 2025 · Other acquisition · Stock Option (right to buy)Atay Oguzhan · November 7, 2025 · Other acquisition · Stock Option (right to buy)Atay Oguzhan · November 7, 2025 · Other acquisition · Class B Common StockAtay Oguzhan · November 7, 2025 · Other acquisition · Class A Common StockAtay Oguzhan · November 7, 2025 · Other acquisition · Class A Common StockAtay Oguzhan · November 7, 2025 · Other acquisition · Class A Common StockAtay Oguzhan · November 7, 2025 · Conversion · Common StockNov 7, 2025Oct 15, 2026
PurchaseStock awardGift receivedExercise / conversionConversionOther acquisition

10 dated transactions · 1 of 1 reporting owners shown. Select one owner to focus the chart.

View timeline as a table
Transaction dateCompany / securityReporting ownersAcquisition type
Oct 15, 2026BillionToOne, Inc.Class A Common StockAtay OguzhanExercise / conversion
Oct 14, 2026BillionToOne, Inc.Class A Common StockAtay OguzhanExercise / conversion
Oct 12, 2026BillionToOne, Inc.Class A Common StockAtay OguzhanExercise / conversion
Nov 7, 2025BillionToOne, Inc.Stock Option (right to buy)Atay OguzhanOther acquisition
Nov 7, 2025BillionToOne, Inc.Stock Option (right to buy)Atay OguzhanOther acquisition
Nov 7, 2025BillionToOne, Inc.Class B Common StockAtay OguzhanOther acquisition
Nov 7, 2025BillionToOne, Inc.Class A Common StockAtay OguzhanOther acquisition
Nov 7, 2025BillionToOne, Inc.Class A Common StockAtay OguzhanOther acquisition
Nov 7, 2025BillionToOne, Inc.Class A Common StockAtay OguzhanOther acquisition
Nov 7, 2025BillionToOne, Inc.Common StockAtay OguzhanConversion

Only transactions on this page are shown. Date windows end on the latest transaction date in this sample. Joint filings may appear on more than one row. Sales are not included. Share-price charts use a separate data source.

Transactions in associated filings

Reported insider acquisitions, ordered by filing date, newest first. Currency is shown only when reported.
Filed / transactedCompanyReporting ownersType / securityQuantityPrice / reference valueDetails
Trade: BillionToOne, Inc.BLLN · company listings
Atay OguzhanChairman and CEO · Director
Exercise / conversionClass A Common StockNon-derivative security · Code M5,1502.8Value: 14,420Currency not specifiedView ↗
Trade: BillionToOne, Inc.BLLN · company listings
Atay OguzhanChairman and CEO · Director
Exercise / conversionClass A Common StockNon-derivative security · Code M3,1832.8Value: 8,912.4Currency not specifiedView ↗
Trade: BillionToOne, Inc.BLLN · company listings
Atay OguzhanChairman and CEO · Director
Exercise / conversionClass A Common StockNon-derivative security · Code M16,6672.8Value: 46,667.6Currency not specifiedView ↗
Trade: BillionToOne, Inc.BLLN · company listings
Atay OguzhanSee Remarks · Director
Other acquisitionStock Option (right to buy)Derivative security · Code J1,003,102Not reported *Value: Not reportedCurrency not specifiedView ↗
Trade: BillionToOne, Inc.BLLN · company listings
Atay OguzhanSee Remarks · Director
Other acquisitionStock Option (right to buy)Derivative security · Code J640,000Not reported *Value: Not reportedCurrency not specifiedView ↗
Trade: BillionToOne, Inc.BLLN · company listings
Atay OguzhanSee Remarks · Director
Other acquisitionClass B Common StockDerivative security · Code J2,227,5420Value: 0Currency not specifiedView ↗
Trade: BillionToOne, Inc.BLLN · company listings
Atay OguzhanSee Remarks · Director
Other acquisitionClass A Common StockNon-derivative security · Code J200,000Not reported *Value: Not reportedCurrency not specifiedView ↗
Trade: BillionToOne, Inc.BLLN · company listings
Atay OguzhanSee Remarks · Director
Other acquisitionClass A Common StockNon-derivative security · Code J1,965,108Not reported *Value: Not reportedCurrency not specifiedView ↗
Trade: BillionToOne, Inc.BLLN · company listings
Atay OguzhanSee Remarks · Director
Other acquisitionClass A Common StockNon-derivative security · Code J262,434Not reported *Value: Not reportedCurrency not specifiedView ↗
Trade: BillionToOne, Inc.BLLN · company listings
Atay OguzhanSee Remarks · Director
ConversionCommon StockNon-derivative security · Code C262,434Not reported *Value: Not reportedCurrency not specifiedView ↗