Quantum-Si Inc (QSI) Form 8-K Material Events
Quantum-Si Inc (QSI) is a publicly traded company on the Nasdaq, categorized under SIC 3829 (Measuring & Controlling Devices, NEC). Access real-time SEC filings, 10-K annual reports, 10-Q quarterlies, 8-K current reports, PCAOB auditor history, and executive compensation disclosures.
Ticker: QSI
CIK: 1816431
Exchange: Nasdaq
SIC 3829: Measuring & Controlling Devices, NEC
Fiscal Year End: 12/31
State: DE
Independent PCAOB Auditor
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Audit Firm
PricewaterhouseCoopers LLP
Auditor SinceSince 12/31/2024 12:00:00 AM
Lead Engagement PartnerOusmane Caba
Audit LocationSan Diego, California, United States
Latest SEC EDGAR Filings
Showing 10-K, 10-Q, 8-K, Form 4, and other SEC submissions| Form | Filing Date | Reporting Period | Description | Accession Number | Actions |
|---|---|---|---|---|---|
| 8-K | 2026-10-15 | 2026-10-14 | 8-K | 0001816431-26-000068 | View SEC Doc Filr Page |
| 8-K | 2026-10-08 | 2026-10-08 | 8-K | 0001816431-26-000064 | View SEC Doc Filr Page |
| 8-K | 2026-09-29 | 2026-09-28 | 8-K | 0001816431-26-000061 | View SEC Doc Filr Page |
| 4 | 2026-09-23 | 2026-09-21 | FORM 4 | 0001140361-26-037481 | View SEC Doc Filr Page |
| 4 | 2026-09-23 | 2026-09-21 | FORM 4 | 0001140361-26-037478 | View SEC Doc Filr Page |
| 4 | 2026-09-23 | 2026-09-21 | FORM 4 | 0001140361-26-037476 | View SEC Doc Filr Page |
| 144 | 2026-09-23 | — | 144 Filing | 0001505034-26-000004 | View SEC Doc Filr Page |
| 144 | 2026-09-23 | — | 144 Filing | 0001856912-26-000003 | View SEC Doc Filr Page |
| 144 | 2026-09-23 | — | 144 Filing | 0001557736-26-000004 | View SEC Doc Filr Page |
| SCHEDULE 13D/A | 2026-08-28 | — | SCHEDULE 13D/A Filing | 0001140361-26-034869 | View SEC Doc Filr Page |
| 10-Q | 2026-08-13 | 2026-06-30 | 10-Q | 0001816431-26-000056 | View SEC Doc Filr Page |
| 8-K | 2026-08-13 | 2026-08-13 | 8-K | 0001816431-26-000053 | View SEC Doc Filr Page |
| SCHEDULE 13G/A | 2026-07-29 | — | SCHEDULE 13G/A Filing | 0002012383-26-002864 | View SEC Doc Filr Page |
| 8-K | 2026-07-24 | 2026-07-23 | 8-K | 0001816431-26-000049 | View SEC Doc Filr Page |
| 4 | 2026-06-24 | 2026-06-22 | FORM 4 | 0001140361-26-026294 | View SEC Doc Filr Page |
| 4 | 2026-06-24 | 2026-06-22 | FORM 4 | 0001140361-26-026290 | View SEC Doc Filr Page |
| 4 | 2026-06-24 | 2026-06-22 | FORM 4 | 0001140361-26-026287 | View SEC Doc Filr Page |
| 4 | 2026-06-24 | 2026-06-22 | FORM 4 | 0001140361-26-026285 | View SEC Doc Filr Page |
| 144 | 2026-06-24 | — | 144 Filing | 0001856912-26-000002 | View SEC Doc Filr Page |
| 144 | 2026-06-24 | — | 144 Filing | 0001557736-26-000003 | View SEC Doc Filr Page |
| 144 | 2026-06-24 | — | 144 Filing | 0002032947-26-000002 | View SEC Doc Filr Page |
| 144 | 2026-06-24 | — | 144 Filing | 0001505034-26-000003 | View SEC Doc Filr Page |
| 8-K | 2026-06-24 | 2026-06-18 | 8-K | 0001816431-26-000046 | View SEC Doc Filr Page |
| 25-NSE | 2026-06-10 | — | 25-NSE Filing | 0001354457-26-000560 | View SEC Doc Filr Page |
| SD | 2026-05-22 | — | SD | 0001816431-26-000041 | View SEC Doc Filr Page |