Company filings profile · CIK 0001816431
Quantum-Si Inc — SEC filings & insider activity.
Real, source-linked SEC EDGAR activity for Quantum-Si Inc (QSI): 12 filings in the last 90 days vs 27 in the prior 90 (filing-velocity cooling ↓ · 0.44×). Latest material 8-K events, insider Form-4 transactions, and periodic reports — monitored for change.
✔ Verified against the public SEC EDGAR filing record as of Sep 29, 2026. Source-linked, daily-refreshed.
Material 8-K events — Quantum-Si Inc
8-K disclosures decoded by item code (the material events: agreements, results, control/management changes, impairments, restatements).
| Filed | Event | |
|---|---|---|
| Sep 29, 2026 | Regulation FD Disclosure; Financial Statements and Exhibits | ↗ |
| Aug 13, 2026 | Results of Operations (earnings); Financial Statements and Exhibits | ↗ |
| Jul 24, 2026 | Delisting / Listing-Rule Failure | ↗ |
| Jun 24, 2026 | Entry into a Material Agreement; Material Direct Financial Obligation; Financial Statements and Exhibits | ↗ |
| May 15, 2026 | Item 5.07 | ↗ |
| May 7, 2026 | Results of Operations (earnings); Financial Statements and Exhibits | ↗ |
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Insider transactions (Form 4 / 3 / 5)
Recent filings
| Filed | Form | Detail | |
|---|---|---|---|
| Sep 29, 2026 | 8-K | Regulation FD Disclosure; Financial Statements and Exhibits | ↗ |
| Sep 23, 2026 | 4 | FORM 4 | ↗ |
| Sep 23, 2026 | 4 | FORM 4 | ↗ |
| Sep 23, 2026 | 4 | FORM 4 | ↗ |
| Sep 23, 2026 | 144 | ↗ | |
| Sep 23, 2026 | 144 | ↗ | |
| Sep 23, 2026 | 144 | ↗ | |
| Aug 28, 2026 | SCHEDULE 13D/A | ↗ | |
| Aug 13, 2026 | 10-Q | 10-Q | ↗ |
| Aug 13, 2026 | 8-K | Results of Operations (earnings); Financial Statements and Exhibits | ↗ |
| Jul 29, 2026 | SCHEDULE 13G/A | ↗ | |
| Jul 24, 2026 | 8-K | Delisting / Listing-Rule Failure | ↗ |
| Jun 24, 2026 | 4 | FORM 4 | ↗ |
| Jun 24, 2026 | 4 | FORM 4 | ↗ |
| Jun 24, 2026 | 4 | FORM 4 | ↗ |
| Jun 24, 2026 | 4 | FORM 4 | ↗ |
| Jun 24, 2026 | 144 | ↗ | |
| Jun 24, 2026 | 144 | ↗ | |
| Jun 24, 2026 | 144 | ↗ | |
| Jun 24, 2026 | 144 | ↗ | |
| Jun 24, 2026 | 8-K | Entry into a Material Agreement; Material Direct Financial Obligation; Financial Statements and Exhibits | ↗ |
| Jun 10, 2026 | 25-NSE | ↗ | |
| May 22, 2026 | SD | SD | ↗ |
| May 20, 2026 | 4 | FORM 4 | ↗ |
| May 20, 2026 | 4 | FORM 4 | ↗ |
| May 20, 2026 | 4 | FORM 4 | ↗ |
| May 20, 2026 | 4 | FORM 4 | ↗ |
| May 20, 2026 | 4 | FORM 4 | ↗ |
| May 20, 2026 | 4 | FORM 4 | ↗ |
| May 20, 2026 | 4 | FORM 4 | ↗ |
| May 20, 2026 | 4 | FORM 4 | ↗ |
| May 20, 2026 | 4 | FORM 4 | ↗ |
| May 15, 2026 | 8-K | Item 5.07 | ↗ |
| May 7, 2026 | 10-Q | 10-Q | ↗ |
| May 7, 2026 | 8-K | Results of Operations (earnings); Financial Statements and Exhibits | ↗ |
| Apr 22, 2026 | 4 | FORM 4 | ↗ |
| Apr 22, 2026 | 4 | FORM 4 | ↗ |
| Apr 22, 2026 | 144 | ↗ | |
| Apr 22, 2026 | 144 | ↗ | |
| Apr 1, 2026 | ARS | ARS | ↗ |