Quantum-Si SEC Filings
NASDAQ: QSIIndustrialsIndustrial Machinery/ComponentsUSD
1.53+0.31 (+25.41%)
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Quantum-Si filing overview
This page lists 60 recent SEC filings by Quantum-Si (QSI), including 38 4, 13 8-K, 3 10-Q, 2 SCHEDULE 13G/A. The latest annual report (10-K) was filed on Mar 3, 2026 for the period ending Dec 31, 2025. The most recent quarterly report (10-Q) was filed on Aug 13, 2026.
The latest current report (8-K), used to disclose material events such as earnings releases and executive changes, was filed on Oct 8, 2026. Form 10-K is the audited annual report, 10-Q the quarterly report, 8-K covers material events, and Form 4 reports insider transactions. All documents link directly to SEC EDGAR.
Summary generated from market data by MetaCap's automated system. Methodology
QSI SEC filings
| Filed | Form | Description | Document |
|---|---|---|---|
| Oct 8, 2026 | 8-K | Regulation FD Disclosure | View on EDGAR |
| Sep 29, 2026 | 8-K | Regulation FD Disclosure | View on EDGAR |
| Sep 23, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Sep 23, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Sep 23, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Aug 28, 2026 | SCHEDULE 13D/A | Beneficial ownership report (activist) (amendment) | View on EDGAR |
| Aug 13, 2026 | 8-K | Results of Operations and Financial Condition | View on EDGAR |
| Aug 13, 2026 | 10-Q | Quarterly report | View on EDGAR |
| Jul 29, 2026 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Jul 24, 2026 | 8-K | Notice of Delisting or Failure to Satisfy a Continued Listing Rule; Transfer of Listing | View on EDGAR |
| Jun 24, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 24, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 24, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 24, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 24, 2026 | 8-K | Entry into a Material Definitive Agreement; Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement | View on EDGAR |
| May 20, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 20, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 20, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 20, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 20, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 20, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 20, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 20, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 20, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 15, 2026 | 8-K | Submission of Matters to a Vote of Security Holders | View on EDGAR |
| May 7, 2026 | 8-K | Results of Operations and Financial Condition | View on EDGAR |
| May 7, 2026 | 10-Q | Quarterly report | View on EDGAR |
| Apr 22, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Apr 22, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Apr 1, 2026 | DEF 14A | Definitive proxy statement | View on EDGAR |
| Mar 24, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 24, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 24, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 24, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 16, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 16, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 16, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 16, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 9, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 9, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 3, 2026 | 8-K | Results of Operations and Financial Condition | View on EDGAR |
| Mar 3, 2026 | 10-K | Annual report | View on EDGAR |
| Feb 26, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Dec 29, 2025 | 8-K | Regulation FD Disclosure | View on EDGAR |
| Dec 22, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Dec 22, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Dec 22, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Dec 22, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Nov 20, 2025 | 8-K | Regulation FD Disclosure | View on EDGAR |
| Nov 5, 2025 | 8-K | Results of Operations and Financial Condition | View on EDGAR |
| Nov 5, 2025 | 10-Q | Quarterly report | View on EDGAR |
| Oct 30, 2025 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Oct 29, 2025 | 424B3 | Prospectus | View on EDGAR |
| Oct 17, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Sep 29, 2025 | 8-K | Entry into a Material Definitive Agreement | View on EDGAR |
| Sep 26, 2025 | 8-K | Entry into a Material Definitive Agreement; Termination of a Material Definitive Agreement; Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement | View on EDGAR |
| Sep 24, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Sep 24, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Sep 24, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Sep 24, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |