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 |
|---|---|---|---|
| 8-K |
Current report
Officer or director change, Other events
|
Oct 9, 2026 | Oct 9, 2026 |
| 8-K |
Current report
Officer or director change, Other events
|
Sep 28, 2026 | Sep 28, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Sep 17, 2026 | Sep 15, 2026 |
| 8-K |
Current report
Officer or director change, Other events
|
Sep 1, 2026 | Sep 1, 2026 |
| 8-K |
Current report
Officer or director change
|
Aug 14, 2026 | Aug 11, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2026 | Aug 10, 2026 |
| 8-K |
Current report
Results of operations
|
Jun 25, 2026 | Jun 25, 2026 |
| 8-K |
Current report
Agreement ended, Other events
|
Jun 5, 2026 | Jun 4, 2026 |
| 8-K |
Current report
Material agreement, Results of operations, New debt, Unregistered share sale, Other events
|
Jun 2, 2026 | Jun 1, 2026 |
| 8-K |
Current report
Results of operations
|
Feb 17, 2026 | Feb 17, 2026 |
| 8-K |
Current report
Officer or director change, Other events
|
Feb 2, 2026 | Feb 2, 2026 |
| 8-K |
Current report
Results of operations
|
Jan 15, 2026 | Jan 15, 2026 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale, Shareholder vote results
|
Dec 18, 2025 | Dec 16, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 13, 2025 | Nov 13, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2025 | Oct 28, 2025 |
| 8-K |
Current report
Other events
|
Oct 20, 2025 | Oct 20, 2025 |
| 8-K |
Current report
Auditor change
|
Oct 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale, Other events
|
Sep 23, 2025 | Sep 23, 2025 |
| 8-K |
Current report
Other events
|
Sep 15, 2025 | Sep 12, 2025 |
| 8-K |
Current report
Results of operations
|
Sep 10, 2025 | Sep 10, 2025 |
| 8-K |
Current report
Officer or director change
|
Aug 28, 2025 | Aug 27, 2025 |
| 8-K |
Current report
Listing notice, Other events
|
Aug 26, 2025 | Aug 21, 2025 |
| 8-K |
Current report
Agreement ended, Results of operations, Officer or director change, Other events
|
Aug 18, 2025 | Aug 12, 2025 |
| 8-K |
Current report
Restatement
|
Aug 8, 2025 | Aug 8, 2025 |
| 8-K |
Current report
Listing notice, Other events
|
Jul 23, 2025 | Jul 17, 2025 |
| 8-K |
Current report
Officer or director change
|
Jul 8, 2025 | Jul 1, 2025 |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change
|
Jun 18, 2025 | Jun 12, 2025 |
| 8-K |
Current report
Results of operations, Officer or director change, Other events
|
Jun 3, 2025 | Jun 2, 2025 |
| 8-K |
Current report
Results of operations
|
May 6, 2025 | May 6, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Apr 29, 2025 | Apr 24, 2025 |
| 8-K |
Current report
Other events
|
Apr 17, 2025 | Apr 16, 2025 |
| 8-K |
Current report
Officer or director change, Other events
|
Apr 3, 2025 | Mar 28, 2025 |
| 8-K |
Current report
Officer or director change
|
Mar 20, 2025 | Mar 19, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 12, 2025 | Feb 12, 2025 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Jan 27, 2025 | Jan 25, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 13, 2024 | Nov 13, 2024 |
| 8-K |
Current report
Listing notice
|
Oct 10, 2024 | Oct 4, 2024 |
| 8-K |
Current report
Other events
|
Sep 23, 2024 | Sep 17, 2024 |
| 8-K |
Current report
Shareholder vote results, Other events
|
Aug 20, 2024 | Aug 15, 2024 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Aug 14, 2024 | Aug 13, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 13, 2024 | Aug 13, 2024 |
| 8-K |
Current report
Material agreement
|
Jul 12, 2024 | Jul 11, 2024 |
| 8-K |
Current report
Officer or director change
|
Jun 18, 2024 | Jun 12, 2024 |
| 8-K |
Current report
Results of operations
|
Jun 17, 2024 | Jun 17, 2024 |
| 8-K |
Current report
Officer or director change, Other events
|
Jun 10, 2024 | Jun 6, 2024 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Restatement
|
May 29, 2024 | May 22, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
May 3, 2024 | May 3, 2024 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Apr 12, 2024 | Apr 8, 2024 |
| 8-K |
Current report
Material agreement, Listing notice
|
Mar 25, 2024 | Mar 19, 2024 |
| 8-K |
Current report
Material agreement
|
Feb 20, 2024 | Feb 14, 2024 |
| 8-K |
Current report
Listing notice
|
Feb 14, 2024 | Feb 13, 2024 |
| 8-K |
Current report
Listing notice, Other events
|
Nov 17, 2023 | Nov 14, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Nov 16, 2023 | Nov 9, 2023 |
| 8-K |
Current report
Material agreement, Results of operations
|
Nov 13, 2023 | Nov 10, 2023 |
| 8-K |
Current report
Listing notice
|
Sep 26, 2023 | Sep 20, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Sep 14, 2023 | Sep 12, 2023 |
| 8-K |
Current report
Auditor change
|
Aug 21, 2023 | Aug 21, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2023 | Aug 8, 2023 |
| 8-K |
Current report
Auditor change
|
Jul 27, 2023 | Jul 21, 2023 |
| 8-K |
Current report
Material agreement, Results of operations, Exit or restructuring costs, Unregistered share sale, Officer or director change
|
Jun 6, 2023 | May 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 2, 2023 | Feb 2, 2023 |
| 8-K |
Current report
Officer or director change
|
Jan 11, 2023 | Jan 10, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2022 | Nov 2, 2022 |
| 8-K |
Current report
Officer or director change
|
Sep 28, 2022 | Sep 22, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Aug 22, 2022 | Aug 16, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2022 | Aug 4, 2022 |
| 8-K |
Current report
Officer or director change
|
Jun 16, 2022 | Jun 16, 2022 |
| 8-K |
Current report
Results of operations
|
Jun 8, 2022 | Jun 8, 2022 |
| 8-K | Current report | May 18, 2022 | May 18, 2022 |
| 8-K |
Current report
Material agreement, Other events
|
Apr 27, 2022 | Apr 22, 2022 |
| 8-K |
Current report
Results of operations, Other events
|
Apr 11, 2022 | Apr 11, 2022 |
| 8-K |
Current report
Other events
|
Mar 29, 2022 | Mar 29, 2022 |
| 8-K |
Current report
Material agreement, Other events
|
Mar 17, 2022 | Mar 15, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 9, 2022 | Feb 9, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 3, 2021 | Nov 3, 2021 |
| 8-K |
Current report
Material agreement
|
Oct 6, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Sep 27, 2021 | Sep 21, 2021 |
| 8-K |
Current report
Officer or director change
|
Aug 13, 2021 | Aug 13, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 9, 2021 | Aug 9, 2021 |
| 8-K |
Current report
Material agreement
|
Aug 5, 2021 | Aug 5, 2021 |
| 8-K |
Current report
Officer or director change
|
Jul 23, 2021 | Jul 20, 2021 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Unregistered share sale
|
Jul 22, 2021 | Jul 18, 2021 |
| 8-K | Current report | Jun 24, 2021 | Jun 24, 2021 |
| 8-K |
Current report
Results of operations
|
May 26, 2021 | May 26, 2021 |
| 8-K |
Current report
Officer or director change
|
Apr 22, 2021 | Apr 19, 2021 |
| 8-K |
Current report
Agreement ended, Other events
|
Feb 8, 2021 | Feb 5, 2021 |
| 8-K |
Current report
Other events
|
Feb 4, 2021 | Feb 3, 2021 |
| 8-K |
Current report
Other events
|
Feb 3, 2021 | Feb 3, 2021 |
| 8-K |
Current report
Results of operations
|
Jan 27, 2021 | Jan 27, 2021 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Unregistered share sale, Other events
|
Dec 14, 2020 | Dec 12, 2020 |
| 8-K |
Current report
Material agreement
|
Nov 25, 2020 | Nov 25, 2020 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2020 | Oct 28, 2020 |
| 8-K |
Current report
Officer or director change
|
Oct 14, 2020 | Oct 14, 2020 |
| 8-K |
Current report
Shareholder vote results
|
Aug 20, 2020 | Aug 18, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2020 | Aug 5, 2020 |
| 8-K |
Current report
Results of operations
|
Jun 24, 2020 | Jun 24, 2020 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Jun 17, 2020 | Jun 16, 2020 |
| 8-K |
Current report
Material agreement
|
Jun 1, 2020 | Jun 1, 2020 |
| 8-K |
Current report
Material agreement
|
May 19, 2020 | May 18, 2020 |
| 8-K |
Current report
Material agreement
|
May 18, 2020 | May 18, 2020 |
| 8-K |
Current report
Material agreement, New debt
|
Apr 16, 2020 | Apr 16, 2020 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets
|
Apr 6, 2020 | Apr 6, 2020 |
| 8-K |
Current report
Results of operations
|
Jan 29, 2020 | Jan 29, 2020 |
| 8-K |
Current report
Regulation FD disclosure
|
Dec 23, 2019 | Dec 23, 2019 |
| 8-K |
Current report
Officer or director change
|
Dec 17, 2019 | Dec 16, 2019 |
| 8-K |
Current report
Other events
|
Dec 2, 2019 | Dec 2, 2019 |
| 8-K |
Current report
Other events
|
Nov 21, 2019 | Nov 21, 2019 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Nov 18, 2019 | Nov 18, 2019 |
| 8-K |
Current report
Officer or director change
|
Nov 8, 2019 | Nov 7, 2019 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2019 | Nov 5, 2019 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Oct 16, 2019 | Oct 15, 2019 |
| 8-K |
Current report
Officer or director change
|
Sep 11, 2019 | Sep 5, 2019 |
| 8-K |
Current report
Other events
|
Sep 9, 2019 | Sep 6, 2019 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2019 | Aug 6, 2019 |
| 8-K |
Current report
Other events
|
Jul 3, 2019 | Jun 29, 2019 |
| 8-K |
Current report
Other events
|
May 31, 2019 | May 28, 2019 |
| 8-K |
Current report
Other events
|
Apr 16, 2019 | Apr 11, 2019 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Apr 11, 2019 | Apr 11, 2019 |
| 8-K |
Current report
Officer or director change
|
Apr 10, 2019 | Apr 4, 2019 |
| 8-K |
Current report
Officer or director change
|
Feb 4, 2019 | Jan 29, 2019 |
| 8-K |
Current report
Auditor change
|
Jan 25, 2019 | Jan 21, 2019 |
| 8-K |
Current report
Listing notice
|
Jan 15, 2019 | Jan 15, 2019 |
| 8-K |
Current report
Other events
|
Dec 28, 2018 | Dec 28, 2018 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Dec 28, 2018 | Dec 27, 2018 |
| 8-K |
Current report
Restatement, Other events
|
Sep 14, 2018 | Sep 14, 2018 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Aug 29, 2018 | Aug 23, 2018 |
| 8-K |
Current report
Other events
|
Aug 17, 2018 | Aug 15, 2018 |
| 8-K |
Current report
Exit or restructuring costs, Officer or director change
|
Jun 27, 2018 | Jun 22, 2018 |
| 8-K |
Current report
Officer or director change
|
May 30, 2018 | May 25, 2018 |
| 8-K |
Current report
Officer or director change
|
May 11, 2018 | May 11, 2018 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Feb 20, 2018 | Dec 14, 2017 |
| 8-K |
Current report
Listing notice
|
Feb 16, 2018 | Feb 15, 2018 |
| 8-K |
Current report
Exit or restructuring costs, Other events
|
Feb 8, 2018 | Feb 6, 2018 |
| 8-K |
Current report
Officer or director change
|
Jan 22, 2018 | Jan 16, 2018 |
| 8-K |
Current report
Other events
|
Nov 16, 2017 | Nov 15, 2017 |
| 8-K |
Current report
Officer or director change
|
Nov 13, 2017 | Nov 7, 2017 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2017 | Nov 9, 2017 |
| 8-K |
Current report
Material agreement, New debt
|
Nov 9, 2017 | Nov 6, 2017 |
| 8-K |
Current report
Officer or director change
|
Sep 5, 2017 | Aug 31, 2017 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Aug 24, 2017 | Aug 24, 2017 |
| 8-K |
Current report
Officer or director change
|
Aug 14, 2017 | Aug 9, 2017 |
| 8-K |
Current report
Results of operations
|
Aug 9, 2017 | Aug 9, 2017 |
| 8-K |
Current report
Officer or director change, Other events
|
Jun 1, 2017 | May 31, 2017 |
| 8-K |
Current report
Results of operations
|
May 10, 2017 | May 10, 2017 |
| 8-K |
Current report
Officer or director change
|
May 4, 2017 | May 1, 2017 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Apr 18, 2017 | Apr 17, 2017 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Apr 3, 2017 | Mar 31, 2017 |
| 8-K |
Current report
Material agreement, Officer or director change, Other events
|
Mar 3, 2017 | Mar 2, 2017 |
| 8-K |
Current report
Results of operations
|
Jan 25, 2017 | Jan 25, 2017 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure, Other events
|
Jan 12, 2017 | Jan 12, 2017 |
| 8-K |
Current report
Material agreement, Bylaw or fiscal year change
|
Dec 5, 2016 | Dec 2, 2016 |
| 8-K |
Current report
Other events
|
Dec 2, 2016 | Dec 1, 2016 |
| 8-K |
Current report
Other events
|
Nov 22, 2016 | Nov 16, 2016 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Nov 2, 2016 | Nov 2, 2016 |
| 8-K |
Current report
Results of operations
|
Oct 26, 2016 | Oct 26, 2016 |
| 8-K |
Current report
Material agreement, New debt
|
Oct 21, 2016 | Oct 21, 2016 |
| 8-K |
Current report
Results of operations
|
Oct 6, 2016 | Oct 6, 2016 |
| 8-K |
Current report
Material agreement
|
Sep 26, 2016 | Sep 23, 2016 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 13, 2016 | Sep 13, 2016 |
| 8-K |
Current report
Results of operations
|
Jul 27, 2016 | Jul 27, 2016 |
| 8-K |
Current report
Results of operations
|
May 10, 2016 | May 10, 2016 |
| 8-K |
Current report
Officer or director change
|
Apr 18, 2016 | Apr 18, 2016 |
| 8-K |
Current report
Material agreement, Results of operations
|
Apr 18, 2016 | Apr 18, 2016 |
| 8-K |
Current report
Officer or director change
|
Apr 5, 2016 | Apr 1, 2016 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Feb 8, 2016 | Feb 3, 2016 |
| 8-K |
Current report
Officer or director change
|
Feb 5, 2016 | Feb 3, 2016 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Jan 28, 2016 | Jan 26, 2016 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2015 | Oct 29, 2015 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure, Other events
|
Oct 6, 2015 | Oct 6, 2015 |
| 8-K |
Current report
Other events
|
Oct 6, 2015 | Oct 2, 2015 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Aug 31, 2015 | Aug 31, 2015 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Aug 13, 2015 | Aug 7, 2015 |
| 8-K |
Current report
Other events
|
Aug 5, 2015 | Aug 5, 2015 |
| 8-K |
Current report
Results of operations
|
Jul 30, 2015 | Jul 30, 2015 |
| 8-K |
Current report
Results of operations
|
Jul 16, 2015 | Jul 16, 2015 |
| 8-K |
Current report
Officer or director change
|
May 6, 2015 | May 6, 2015 |
| 8-K |
Current report
Other events
|
May 6, 2015 | May 6, 2015 |
| 8-K |
Current report
Results of operations
|
May 6, 2015 | May 6, 2015 |
| 8-K |
Current report
Results of operations
|
Apr 10, 2015 | Apr 9, 2015 |
| 8-K |
Current report
Other events
|
Feb 11, 2015 | Feb 10, 2015 |
| 8-K |
Current report
Results of operations
|
Jan 29, 2015 | Jan 29, 2015 |
| 8-K |
Current report
Other events
|
Jan 29, 2015 | Jan 28, 2015 |
| 8-K |
Current report
Officer or director change
|
Jan 15, 2015 | Jan 12, 2015 |
| 8-K |
Current report
Results of operations
|
Jan 14, 2015 | Jan 13, 2015 |
| 8-K |
Current report
Other events
|
Dec 9, 2014 | Dec 4, 2014 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2014 | Oct 29, 2014 |
| 8-K |
Current report
Results of operations
|
Oct 14, 2014 | Oct 13, 2014 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Sep 9, 2014 | Sep 9, 2014 |
| 8-K |
Current report
Material agreement
|
Jul 29, 2014 | Jul 28, 2014 |
| 8-K |
Current report
Results of operations
|
Jul 23, 2014 | Jul 23, 2014 |
| 8-K |
Current report
Results of operations
|
May 7, 2014 | May 7, 2014 |
| 8-K |
Current report
Material agreement
|
Apr 29, 2014 | Apr 24, 2014 |
| 8-K |
Current report
Officer or director change
|
Mar 26, 2014 | Mar 20, 2014 |
| 8-K |
Current report
Results of operations
|
Jan 29, 2014 | Jan 29, 2014 |
| 8-K |
Current report
Results of operations
|
Jan 14, 2014 | Jan 13, 2014 |
| 8-K |
Current report
Results of operations
|
Oct 23, 2013 | Oct 23, 2013 |
| 8-K |
Current report
Shareholder vote results
|
Aug 8, 2013 | Aug 7, 2013 |
| 8-K |
Current report
Results of operations
|
Aug 1, 2013 | Aug 1, 2013 |
| 8-K |
Current report
Results of operations, Officer or director change, Other events
|
Jul 9, 2013 | Jul 2, 2013 |
| 8-K |
Current report
Exit or restructuring costs
|
Jul 3, 2013 | Jun 28, 2013 |
Showing 200 filings, the most recent 200. 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.
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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.