BillionToOne, Inc. SEC filings BLLN
BillionToOne, Inc. has 178 filings in SEC EDGAR's recent list, going back to Jun 20, 2025. Its latest annual report, Form ARS, was filed on Apr 21, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 4, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 4, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Nov 4, 2026 | Nov 2, 2026 |
| 4 | Insider transaction | Nov 4, 2026 | Nov 2, 2026 |
| 4 | Insider transaction | Nov 4, 2026 | Nov 2, 2026 |
| 10-Q | Quarterly report | Nov 4, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Nov 4, 2026 | Nov 4, 2026 |
| 144 | Notice of proposed sale | Nov 2, 2026 | — |
| 144 | Notice of proposed sale | Nov 2, 2026 | — |
| 144 | Notice of proposed sale | Nov 2, 2026 | — |
| 144 | Notice of proposed sale | Nov 2, 2026 | — |
| 144 | Notice of proposed sale | Nov 2, 2026 | — |
| 4 | Insider transaction | Oct 30, 2026 | Oct 28, 2026 |
| 3 | Initial insider ownership | Oct 30, 2026 | Sep 30, 2026 |
| 144 | Notice of proposed sale | Oct 28, 2026 | — |
| 144 | Notice of proposed sale | Oct 28, 2026 | — |
| 4 | Insider transaction | Oct 19, 2026 | Oct 13, 2026 |
| 4 | Insider transaction | Oct 16, 2026 | Oct 14, 2026 |
| 144 | Notice of proposed sale | Oct 15, 2026 | — |
| 4 | Insider transaction | Oct 14, 2026 | Oct 12, 2026 |
| 144 | Notice of proposed sale | Oct 14, 2026 | — |
| 144 | Notice of proposed sale | Oct 14, 2026 | — |
| 4 | Insider transaction | Oct 13, 2026 | Oct 8, 2026 |
| 144 | Notice of proposed sale | Oct 13, 2026 | — |
| 144 | Notice of proposed sale | Oct 13, 2026 | — |
| 4 | Insider transaction | Oct 7, 2026 | Oct 5, 2026 |
| 4 | Insider transaction | Oct 7, 2026 | Oct 5, 2026 |
| 144 | Notice of proposed sale | Oct 5, 2026 | — |
| 144 | Notice of proposed sale | Oct 5, 2026 | — |
| 144 | Notice of proposed sale | Oct 5, 2026 | — |
| 4 | Insider transaction | Sep 30, 2026 | Sep 28, 2026 |
| 4 | Insider transaction | Sep 28, 2026 | Sep 24, 2026 |
| 4 | Insider transaction | Sep 28, 2026 | Sep 24, 2026 |
| 144 | Notice of proposed sale | Sep 28, 2026 | — |
| 144 | Notice of proposed sale | Sep 28, 2026 | — |
| 144 | Notice of proposed sale | Sep 24, 2026 | — |
| 144 | Notice of proposed sale | Sep 24, 2026 | — |
| 4 | Insider transaction | Sep 23, 2026 | Sep 21, 2026 |
| 4 | Insider transaction | Sep 21, 2026 | Sep 17, 2026 |
| 144 | Notice of proposed sale | Sep 21, 2026 | — |
| 144 | Notice of proposed sale | Sep 17, 2026 | — |
| 4 | Insider transaction | Sep 16, 2026 | Sep 14, 2026 |
| 4 | Insider transaction | Sep 14, 2026 | Sep 10, 2026 |
| 144 | Notice of proposed sale | Sep 14, 2026 | — |
| 144 | Notice of proposed sale | Sep 14, 2026 | — |
| 4 | Insider transaction | Sep 11, 2026 | Sep 9, 2026 |
| 4 | Insider transaction | Sep 11, 2026 | Sep 9, 2026 |
| 4 | Insider transaction | Sep 10, 2026 | Sep 8, 2026 |
| 4 | Insider transaction | Sep 10, 2026 | Sep 8, 2026 |
| 144 | Notice of proposed sale | Sep 9, 2026 | — |
| 144 | Notice of proposed sale | Sep 9, 2026 | — |
| 144 | Notice of proposed sale | Sep 9, 2026 | — |
| 4 | Insider transaction | Sep 8, 2026 | Sep 3, 2026 |
| 144 | Notice of proposed sale | Sep 8, 2026 | — |
| 4 | Insider transaction | Aug 28, 2026 | Aug 26, 2026 |
| 4 | Insider transaction | Aug 27, 2026 | Aug 25, 2026 |
| 4 | Insider transaction | Aug 27, 2026 | Aug 25, 2026 |
| 144 | Notice of proposed sale | Aug 25, 2026 | — |
| 144 | Notice of proposed sale | Aug 25, 2026 | — |
| 4 | Insider transaction | Aug 12, 2026 | Aug 10, 2026 |
| 4 | Insider transaction | Aug 12, 2026 | Aug 10, 2026 |
| 144 | Notice of proposed sale | Aug 10, 2026 | — |
| 144 | Notice of proposed sale | Aug 10, 2026 | — |
| 144/A | Filing | Aug 10, 2026 | — |
| 144 | Notice of proposed sale | Aug 10, 2026 | — |
| 4 | Insider transaction | Aug 7, 2026 | Aug 5, 2026 |
| 4 | Insider transaction | Aug 5, 2026 | Aug 3, 2026 |
| 144 | Notice of proposed sale | Aug 5, 2026 | — |
| 10-Q | Quarterly report | Aug 5, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2026 | Aug 5, 2026 |
| 4 | Insider transaction | Aug 4, 2026 | Jul 31, 2026 |
| 144 | Notice of proposed sale | Aug 3, 2026 | — |
| 144 | Notice of proposed sale | Aug 3, 2026 | — |
| 144 | Notice of proposed sale | Aug 3, 2026 | — |
| 144 | Notice of proposed sale | Jul 31, 2026 | — |
| 4 | Insider transaction | Jul 20, 2026 | Jul 16, 2026 |
| 144 | Notice of proposed sale | Jul 16, 2026 | — |
| 4 | Insider transaction | Jul 15, 2026 | Jul 13, 2026 |
| 4 | Insider transaction | Jul 15, 2026 | Jul 13, 2026 |
| 4 | Insider transaction | Jul 13, 2026 | Jul 9, 2026 |
| 4 | Insider transaction | Jul 13, 2026 | Jul 9, 2026 |
| 144 | Notice of proposed sale | Jul 13, 2026 | — |
| 144 | Notice of proposed sale | Jul 13, 2026 | — |
| 144 | Notice of proposed sale | Jul 13, 2026 | — |
| 144 | Notice of proposed sale | Jul 9, 2026 | — |
| 144 | Notice of proposed sale | Jul 9, 2026 | — |
| 4 | Insider transaction | Jul 8, 2026 | Jul 6, 2026 |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 144 | Notice of proposed sale | Jul 6, 2026 | — |
| 144 | Notice of proposed sale | Jul 6, 2026 | — |
| 144 | Notice of proposed sale | Jul 6, 2026 | — |
| 4 | Insider transaction | Jul 1, 2026 | Jun 29, 2026 |
| 144 | Notice of proposed sale | Jul 1, 2026 | — |
| 8-K |
Current report
Material agreement, New debt
|
Jun 29, 2026 | Jun 23, 2026 |
| 144 | Notice of proposed sale | Jun 29, 2026 | — |
| 4 | Insider transaction | Jun 26, 2026 | Jun 24, 2026 |
| 144 | Notice of proposed sale | Jun 24, 2026 | — |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Jun 16, 2026 | Jun 10, 2026 |
| 144 | Notice of proposed sale | Jun 15, 2026 | — |
| 144 | Notice of proposed sale | Jun 15, 2026 | — |
| 144 | Notice of proposed sale | Jun 15, 2026 | — |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | Jun 10, 2026 | Jun 8, 2026 |
| 4 | Insider transaction | Jun 10, 2026 | Jun 8, 2026 |
| 4 | Insider transaction | Jun 10, 2026 | Jun 8, 2026 |
| 144 | Notice of proposed sale | Jun 9, 2026 | — |
| 144 | Notice of proposed sale | Jun 8, 2026 | — |
| 144 | Notice of proposed sale | Jun 8, 2026 | — |
| 144 | Notice of proposed sale | Jun 8, 2026 | — |
| 144 | Notice of proposed sale | Jun 8, 2026 | — |
| 144 | Notice of proposed sale | Jun 8, 2026 | — |
| 4 | Insider transaction | May 13, 2026 | May 11, 2026 |
| 4 | Insider transaction | May 13, 2026 | May 11, 2026 |
| 10-Q | Quarterly report | May 6, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 6, 2026 | May 6, 2026 |
| ARS | Annual report to shareholders | Apr 21, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 21, 2026 | — |
| DEF 14A | Proxy statement | Apr 21, 2026 | Jun 10, 2026 |
| 10-K | Annual report | Mar 11, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Mar 4, 2026 | Mar 4, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 13, 2026 | — |
| SCHEDULE 13D | Ownership over 5% (active) | Jan 20, 2026 | — |
| 4 | Insider transaction | Jan 20, 2026 | Nov 7, 2025 |
| 3 | Initial insider ownership | Jan 20, 2026 | Nov 5, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 12, 2026 | Jan 12, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 1, 2026 |
| 3 | Initial insider ownership | Jan 5, 2026 | Jan 1, 2026 |
| 10-Q | Quarterly report | Dec 10, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Dec 9, 2025 | Dec 9, 2025 |
| 4 | Insider transaction | Nov 12, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 12, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 12, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 12, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 12, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 12, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 12, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 12, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 12, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 6, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 6, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 6, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 6, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 7, 2025 |
| 8-K |
Current report
Bylaw or fiscal year change, Other events
|
Nov 10, 2025 | Nov 7, 2025 |
| 424B4 | Prospectus | Nov 6, 2025 | — |
| S-8 | Employee stock plan registration | Nov 6, 2025 | — |
| 3 | Initial insider ownership | Nov 5, 2025 | Nov 5, 2025 |
| 3 | Initial insider ownership | Nov 5, 2025 | Nov 5, 2025 |
| 3 | Initial insider ownership | Nov 5, 2025 | Nov 5, 2025 |
| 3 | Initial insider ownership | Nov 5, 2025 | Nov 5, 2025 |
| 3 | Initial insider ownership | Nov 5, 2025 | Nov 5, 2025 |
| 3 | Initial insider ownership | Nov 5, 2025 | Nov 5, 2025 |
| 3 | Initial insider ownership | Nov 5, 2025 | Nov 5, 2025 |
| 3 | Initial insider ownership | Nov 5, 2025 | Nov 5, 2025 |
| 3 | Initial insider ownership | Nov 5, 2025 | Nov 5, 2025 |
| 3 | Initial insider ownership | Nov 5, 2025 | Nov 5, 2025 |
| 3 | Initial insider ownership | Nov 5, 2025 | Nov 5, 2025 |
| 3 | Initial insider ownership | Nov 5, 2025 | Nov 5, 2025 |
| 3 | Initial insider ownership | Nov 5, 2025 | Nov 5, 2025 |
| CERT | Filing | Nov 5, 2025 | — |
| 8-A12B | Filing | Nov 3, 2025 | — |
| S-1/A | Amended registration statement | Oct 17, 2025 | — |
| S-1 | Registration statement | Oct 7, 2025 | — |
| DRSLTR | Filing | Sep 17, 2025 | — |
| DRS/A | Filing | Sep 17, 2025 | — |
| UPLOAD | Letter from the SEC | Aug 26, 2025 | — |
| DRSLTR | Filing | Aug 11, 2025 | — |
| DRS/A | Filing | Aug 11, 2025 | — |
| UPLOAD | Letter from the SEC | Jul 17, 2025 | — |
| DRS | Filing | Jun 20, 2025 | — |
Showing 178 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Services-Medical Laboratories (SIC 8071)
- Listed as
- BLLN (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Menlo Park, CA
- SEC filer status
- Non-accelerated filer, Emerging growth company
- SEC CIK
- 2070849
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.