Quantum-Si Inc SEC filings QSI

Quantum-Si Inc has 473 filings in SEC EDGAR's recent list, going back to Jul 2, 2020. Its latest annual report, Form ARS, was filed on Apr 1, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations). The company's fiscal year ends on December 31.

Form Description Filed Period
ARS Annual report to shareholders Apr 1, 2026 Dec 31, 2025
10-K Annual report Mar 3, 2026 Dec 31, 2025
ARS Annual report to shareholders Mar 20, 2025 Dec 31, 2024
10-K Annual report Mar 3, 2025 Dec 31, 2024
ARS Annual report to shareholders Apr 1, 2024 Dec 31, 2023
10-K Annual report Feb 29, 2024 Dec 31, 2023
ARS Annual report to shareholders Apr 28, 2023 Dec 31, 2022
10-K Annual report Mar 17, 2023 Dec 31, 2022
10-K Annual report Mar 1, 2022 Dec 31, 2021
10-K/A Amended annual report May 10, 2021 Dec 31, 2020
10-K Annual report Mar 30, 2021 Dec 31, 2020

Showing 11 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.

New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.

Company profile

Industry
Measuring & Controlling Devices, NEC (SIC 3829)
Listed as
QSI (Nasdaq)
Fiscal year ends
December 31
Incorporated in
DE
Headquarters
Branford, CT
SEC filer status
Non-accelerated filer, Smaller reporting company
SEC CIK
1816431
Former names
HighCape Capital Acquisition Corp. (until Jun 10, 2021)

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Source: SEC EDGAR filings. This is company-reported data, not investment advice.