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BillionToOne, Inc.

For the period ended Sep 30, 2025. Filed Dec 10, 2025.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2025 · Filed Dec 10, 2025

BLLN$114.95+0.9%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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ITEM 6. EXHIBITS

(a) Exhibits

Exhibit NoDescription of ExhibitFormFile No.Exhibit NumberFiling DateFiled or Furnished Herewith
3.1Amended and Restated Certificate of Incorporation of the Registrant8-K001-429343.1November 10, 2025
3.2Amended and Restated Bylaws of Registrant8-K001-429343.2November 10, 2025
10.1Amendment No. 1 to the Note Purchase Agreement, dated as September 4, 2025, by and among by and among the Registrant, the purchasers party thereto, and BWCB SA LLC (an entity affiliated with Oberland Capital Management, LLC), as purchaser’s agent.S-1333-29076110.2October 07, 2025
10.2Development and Commercialization Agreement with Janssen Biotech, Inc., dated July 11, 2025S-1/A333-29076110.10October 17, 2025
10.3Amendment No. 1 to Development and Commercialization Agreement with Janssen Biotech, Inc., dated October 15, 2025S-1/A333-29076110.11October 17, 2025
10.4+Form of Indemnification Agreement by and between the Registrant and each of its directors and executive officersS-1333-29076110.11October 07, 2025
10.5+2025 Equity Incentive PlanS-1/A333-29076110.14October 17, 2025
10.6+2025 Employee Stock Purchase PlanS-1/A333-29076110.15October 17, 2025
10.7+Executive Severance PlanS-1/A333-29076110.16October 17, 2025
31.1Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002X
31.2Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002X
32.1*Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002X
32.2*Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002X
101.INSInline XBRL Instance Document (the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document)
101.SCHInline XBRL Taxonomy Extension Schema Document
101.CALInline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEFInline XBRL Taxonomy Extension Definition Linkbase Document
101.LABInline XBRL Taxonomy Extension Label Linkbase Document
101.PREInline XBRL Taxonomy Extension Presentation Linkbase Document
104Cover Page formatted as Inline XBRL and contained in Exhibit 101
  • Indicates a management contract or compensatory plan or arrangement.

† The Registrant has omitted portions of the exhibit (indicated by “[*]”) as permitted under Item 601(b)(10) of Regulation S-K because such information is both (i) not material and (ii) information that the Registrant treats as private or confidential. The Registrant hereby undertakes to furnish supplemental copies of the unredacted exhibit upon request by the SEC.

  • The certifications furnished in Exhibits 32.1 and 32.2 are not deemed “filed” for purposes of Section 18 of the Exchange Act, or otherwise subject to the liability of that section, nor shall they be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended.
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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.