Quantinuum Inc. SEC filings QNT
Quantinuum Inc. has 53 filings in SEC EDGAR's recent list, going back to Feb 17, 2026. The latest quarterly report (Form 10-Q) was filed on Aug 13, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Sep 8, 2026 (material agreement, unregistered share sale, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 27, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 6, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 13, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 12, 2026 | — |
| 3 | Initial insider ownership | Jul 27, 2026 | Jul 17, 2026 |
| 4/A | Filing | Jul 22, 2026 | Jul 17, 2026 |
| 4 | Insider transaction | Jul 21, 2026 | Jul 17, 2026 |
| 3 | Initial insider ownership | Jul 21, 2026 | Jul 17, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 17, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 6, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jun 22, 2026 | — |
| 4 | Insider transaction | Jun 8, 2026 | Jun 4, 2026 |
| 4 | Insider transaction | Jun 8, 2026 | Jun 4, 2026 |
| 4 | Insider transaction | Jun 8, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | Jun 8, 2026 | Jun 4, 2026 |
| 4 | Insider transaction | Jun 8, 2026 | Jun 4, 2026 |
| 4 | Insider transaction | Jun 8, 2026 | Jun 5, 2026 |
| 4 | Insider transaction | Jun 8, 2026 | Jun 5, 2026 |
| 4 | Insider transaction | Jun 8, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | Jun 8, 2026 | Jun 4, 2026 |
| 4 | Insider transaction | Jun 8, 2026 | Jun 4, 2026 |
| 4 | Insider transaction | Jun 8, 2026 | Jun 4, 2026 |
| 4 | Insider transaction | Jun 8, 2026 | Jun 3, 2026 |
| 3 | Initial insider ownership | Jun 4, 2026 | Jun 4, 2026 |
| 3 | Initial insider ownership | Jun 4, 2026 | Jun 4, 2026 |
| 3 | Initial insider ownership | Jun 4, 2026 | Jun 4, 2026 |
| 3 | Initial insider ownership | Jun 4, 2026 | Jun 4, 2026 |
| 3 | Initial insider ownership | Jun 4, 2026 | Jun 4, 2026 |
| 3 | Initial insider ownership | Jun 4, 2026 | Jun 4, 2026 |
| 3 | Initial insider ownership | Jun 4, 2026 | Jun 4, 2026 |
| 3 | Initial insider ownership | Jun 4, 2026 | Jun 4, 2026 |
| 3 | Initial insider ownership | Jun 4, 2026 | Jun 4, 2026 |
| 3 | Initial insider ownership | Jun 4, 2026 | Jun 4, 2026 |
| 3 | Initial insider ownership | Jun 4, 2026 | Jun 4, 2026 |
| 3 | Initial insider ownership | Jun 4, 2026 | Jun 4, 2026 |
| 3 | Initial insider ownership | Jun 4, 2026 | Jun 4, 2026 |
| 3 | Initial insider ownership | Jun 4, 2026 | Jun 4, 2026 |
| 3 | Initial insider ownership | Jun 4, 2026 | Jun 4, 2026 |
Showing 38 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-Computer Integrated Systems Design (SIC 7373)
- Listed as
- QNT (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Broomfield, CO
- SEC filer status
- , Emerging growth company
- SEC CIK
- 2110105
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.