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Livermore
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ZHEN

Bremner Thomas S's Form 4 filing

BillionToOne, Inc. (BLLN) · filed Nov 10, 2025

Accession no.
0001193125-25-274945
Filed
Nov 10, 2025
Trade date
Nov 6-7, 2025
Filing delay
4 days
Rule 10b5-1 plan
Not checked

This filing lists 30 non-derivative transactions and 27 derivative transactions. Open-market purchases total $2.50M. It was filed 4 days after the trade.

Reporting owners

A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.

Reporting owners on this filing
OwnerRelationship to the company
Bremner Thomas SCIK 0002087538Director

Non-derivative securities (Table I)

Acquisitions and disposals of common stock and similar shares, one row per line on the filing.

Non-derivative transactions
Trade dateSecurityTransactionSharesPriceValueShares afterOwnershipFlags
Nov 6, 2025Common StockAGrant or awardAcquired+8,333$0.00$08,333Direct
Nov 7, 2025Common StockCConversionAcquired+152,440–F3–152,440Indirect
Nov 7, 2025Common StockCConversionAcquired+155,711–F3–155,711Indirect
Nov 7, 2025Common StockCConversionAcquired+176,271–F3–176,271Indirect
Nov 7, 2025Common StockCConversionAcquired+269,918–F3–269,918Indirect
Nov 7, 2025Common StockCConversionAcquired+240,072–F3–240,072Indirect
Nov 7, 2025Common StockCConversionAcquired+675,352–F3–675,352Indirect
Nov 7, 2025Common StockCConversionAcquired+277,508–F3–277,508Indirect
Nov 7, 2025Common StockJOtherDisposed−8,333–F13–0Direct
Nov 7, 2025Common StockJOtherDisposed−152,440–F13–0Indirect
Nov 7, 2025Common StockJOtherDisposed−155,711–F13–0Indirect
Nov 7, 2025Common StockJOtherDisposed−176,271–F13–0Indirect
Nov 7, 2025Common StockJOtherDisposed−269,918–F13–0Indirect
Nov 7, 2025Common StockJOtherDisposed−240,072–F13–0Indirect
Nov 7, 2025Common StockJOtherDisposed−675,352–F13–0Indirect
Nov 7, 2025Common StockJOtherDisposed−277,508–F13–0Indirect
Nov 7, 2025Class A Common StockJOtherAcquired+8,333–F13–8,333Direct
Nov 7, 2025Class A Common StockJOtherAcquired+152,440–F13–152,440Indirect
Nov 7, 2025Class A Common StockJOtherAcquired+155,711–F13–155,711Indirect
Nov 7, 2025Class A Common StockJOtherAcquired+176,271–F13–176,271Indirect
Nov 7, 2025Class A Common StockJOtherAcquired+269,918–F13–269,918Indirect
Nov 7, 2025Class A Common StockJOtherAcquired+240,072–F13–240,072Indirect
Nov 7, 2025Class A Common StockJOtherAcquired+675,352–F13–675,352Indirect
Nov 7, 2025Class A Common StockJOtherAcquired+277,508–F13–277,508Indirect
Nov 7, 2025Class A Common StockPPurchaseAcquired+4,016$60.00+$240,960156,456Indirect
Nov 7, 2025Class A Common StockPPurchaseAcquired+4,084$60.00+$245,040159,795Indirect
Nov 7, 2025Class A Common StockPPurchaseAcquired+3,462$60.00+$207,720179,733Indirect
Nov 7, 2025Class A Common StockPPurchaseAcquired+5,446$60.00+$326,760275,364Indirect
Nov 7, 2025Class A Common StockPPurchaseAcquired+6,867$60.00+$412,020246,939Indirect
Nov 7, 2025Class A Common StockPPurchaseAcquired+17,791$60.00+$1,067,460693,143Indirect

Derivative securities (Table II)

Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.

Derivative transactions
Trade dateSecurityTransactionUnderlying sharesUnit priceValueHeld afterOwnershipFlags
Nov 7, 2025Common StockCConversionDisposed−1,352–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−114,117–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−16,747–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−20,224–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−121,688–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−17,858–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−16,165–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−1,562–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−131,888–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−19,355–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−23,466–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−1,864–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−157,404–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−23,100–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−87,550–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−652–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−55,091–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−8,084–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−176,245–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−5,988–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−505,570–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−74,195–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−89,599–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−1,078–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−91,003–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−13,355–F3–0Indirect
Nov 7, 2025Common StockCConversionDisposed−122,072–F3–0Indirect

Footnotes and remarks

Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.

F3

The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date.

Referenced by the price of 7 transactions in Table I and 27 transactions in Table II.

F13

Pursuant to a reclassification exempt under Rule 16b-7, each share of Common Stock was automatically reclassified into one share of Class A common stock immediately prior to the completion of the Offering.

Referenced by the price of 16 transactions in Table I.

Read the full filing on SEC EDGAR (opens in a new tab)