Quantum Corp /DE/ SEC filings QMCO
Quantum Corp /DE/ has 1,000 filings in SEC EDGAR's recent list, going back to Jul 3, 2013. Its latest annual report, Form ARS, was filed on Jul 29, 2026 for the period ended Mar 31, 2026. The latest quarterly report (Form 10-Q) was filed on Aug 11, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 9, 2026 (officer or director change, other events). The company's fiscal year ends on March 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| S-8 | Employee stock plan registration | Sep 25, 2026 | — |
| 424B3 | Prospectus | Jul 27, 2026 | — |
| S-1 | Registration statement | Jul 14, 2026 | — |
| 424B3 | Prospectus | Feb 24, 2026 | — |
| S-8 | Employee stock plan registration | Feb 19, 2026 | — |
| S-1 | Registration statement | Feb 19, 2026 | — |
| 424B3 | Prospectus | Nov 24, 2025 | — |
| S-1 | Registration statement | Nov 17, 2025 | — |
| 424B3 | Prospectus | Oct 1, 2025 | — |
| POS AM | Filing | Sep 26, 2025 | — |
| 424B3 | Prospectus | Apr 29, 2025 | — |
| S-3 | Shelf registration | Apr 18, 2025 | — |
| 424B3 | Prospectus | Feb 11, 2025 | — |
| S-1/A | Amended registration statement | Feb 6, 2025 | — |
| S-1 | Registration statement | Jan 27, 2025 | — |
| S-8 | Employee stock plan registration | Sep 16, 2024 | — |
| S-8 POS | Filing | Jun 6, 2023 | — |
| S-8 | Employee stock plan registration | Jan 27, 2023 | — |
| 424B3 | Prospectus | Jan 17, 2023 | — |
| S-3 | Shelf registration | Dec 29, 2022 | — |
| S-3ASR | Automatic shelf registration | Dec 27, 2022 | — |
| 424B5 | Prospectus supplement | Mar 29, 2022 | — |
| 424B3 | Prospectus | Dec 30, 2021 | — |
| S-3 | Shelf registration | Dec 17, 2021 | — |
| S-8 | Employee stock plan registration | Sep 30, 2021 | — |
| 424B3 | Prospectus | Aug 25, 2021 | — |
| S-3/A | Filing | Aug 19, 2021 | — |
| S-3 | Shelf registration | Aug 19, 2021 | — |
| 424B2 | Prospectus | Feb 4, 2021 | — |
| 424B3 | Prospectus | Feb 3, 2021 | — |
| S-3 | Shelf registration | Feb 1, 2021 | — |
| S-8 | Employee stock plan registration | Feb 1, 2021 | — |
| 424B2 | Prospectus | Dec 10, 2020 | — |
| S-3/A | Filing | Dec 4, 2020 | — |
| S-3 | Shelf registration | Nov 25, 2020 | — |
| S-8 | Employee stock plan registration | Feb 5, 2020 | — |
| S-8 | Employee stock plan registration | Oct 2, 2019 | — |
| S-8 | Employee stock plan registration | Nov 9, 2017 | — |
| S-8 | Employee stock plan registration | Jun 7, 2017 | — |
| S-8 POS | Post-effective amendment to a s-8 registration statement | Nov 13, 2014 | — |
| S-8 | Employee stock plan registration | Nov 10, 2014 | — |
Showing 41 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
- Computer Storage Devices (SIC 3572)
- Listed as
- QMCO (Nasdaq)
- Fiscal year ends
- March 31
- Incorporated in
- DE
- Headquarters
- Centennial, CO
- SEC filer status
- Accelerated filer, Smaller reporting company
- SEC CIK
- 709283
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.