Quantum Corp
QMCONasdaqCIK 709283TechnologyFiscal year ends Mar 31
Reports and events: 399 filings
Newest first, by EDGAR acceptance time (Eastern). Each filing’s page lists its documents on sec.gov and, for 10-K and 10-Q reports, the extracted sections.
What the forms are: 10-K, 10-Q, 8-K, Form 4, DEF 14A, Schedule 13D, Schedule 13G, amendments, accession numbers.
| Filed | Form | What it is | Accession number |
|---|---|---|---|
| 2026-10-0920:46 ET | 8-K | 5.02 Departure or appointment of officers or directors; 8.01 Other events | 0001628280-26-065547 |
| 2026-09-2812:52 ET | 8-K | 5.02 Departure or appointment of officers or directors; 8.01 Other events; 9.01 Financial statements and exhibits | 0001628280-26-063661 |
| 2026-09-1720:47 ET | 8-K | 5.07 Shareholder vote results | 0001628280-26-062548 |
| 2026-09-0120:50 ET | 8-K | 5.02 Departure or appointment of officers or directors; 8.01 Other events; 9.01 Financial statements and exhibits | 0001628280-26-059879 |
| 2026-08-1421:24 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0001628280-26-057180 |
| 2026-08-1122:13 ET | 10-Q | Quarterly reportPeriod 2026-06-30 | 0001628280-26-055417 |
| 2026-08-1020:27 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-26-055272 |
| 2026-07-2920:06 ET | DEF 14A | Proxy statementPeriod 2026-09-15 | 0001140361-26-030043 |
| 2026-07-1422:33 ET | S-1 | Registration statement | 0001628280-26-048062 |
| 2026-06-2521:16 ET | 10-K | Annual reportPeriod 2026-03-31 | 0001628280-26-045602 |
| 2026-06-2520:21 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-26-045529 |
| 2026-06-0801:14 ET | SCHEDULE 13D/A | Ownership report, active investor, amended | 0000899140-26-000635 |
| 2026-06-0520:05 ET | 8-K | 1.02 Termination of a material agreement; 5.08 Item not in the standard list; 8.01 Other events | 0001193125-26-259525 |
| 2026-06-0214:41 ET | 8-K | 1.01 Entry into a material agreement; 2.02 Results of operations; 2.03 New direct financial obligation; 3.02 Unregistered sale of equity; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-252718 |
| 2026-02-1900:19 ET | S-1 | Registration statement | 0001628280-26-009335 |
| 2026-02-1721:07 ET | 10-Q | Quarterly reportPeriod 2025-12-31 | 0001628280-26-008558 |
| 2026-02-1721:05 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-26-008553 |
| 2026-02-0213:04 ET | 8-K | 5.02 Departure or appointment of officers or directors; 8.01 Other events; 9.01 Financial statements and exhibits | 0001628280-26-004461 |
| 2026-01-1513:42 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-26-002121 |
| 2026-01-1223:58 ET | SCHEDULE 13D/A | Ownership report, active investor, amended | 0000947871-26-000026 |
| 2025-12-2201:32 ET | SCHEDULE 13D/A | Ownership report, active investor, amended | 0000947871-25-001089 |
| 2025-12-1822:15 ET | 8-K | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 3.02 Unregistered sale of equity; 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0000709283-25-000091 |
| 2025-11-1723:33 ET | S-1 | Registration statement | 0001628280-25-052461 |
| 2025-11-1322:07 ET | 10-Q | Quarterly reportPeriod 2025-09-30 | 0000709283-25-000085 |
| 2025-11-1321:51 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000709283-25-000083 |
| 2025-10-3120:34 ET | DEF 14A | Proxy statementPeriod 2025-12-16 | 0001539497-25-002829 |
| 2025-10-2811:33 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000709283-25-000072 |
| 2025-10-2021:01 ET | 8-K | 5.08 Item not in the standard list; 8.01 Other events | 0000709283-25-000063 |
| 2025-10-1020:20 ET | SCHEDULE 13D | Ownership report, active investor | 0000947871-25-000896 |
| 2025-10-0620:03 ET | 8-K | 4.01 Change of auditor | 0000709283-25-000061 |
| 2025-09-2312:54 ET | 10-Q/A | Quarterly report, amendedPeriod 2025-06-30 | 0000709283-25-000058 |
| 2025-09-2312:45 ET | 8-K | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 3.02 Unregistered sale of equity; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-25-212374 |
| 2025-09-1520:11 ET | 8-K | 8.01 Other events | 0000709283-25-000047 |
| 2025-09-1120:23 ET | 10-Q | Quarterly reportPeriod 2025-06-30 | 0000709283-25-000045 |
| 2025-09-1020:12 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000709283-25-000038 |
| 2025-08-2820:12 ET | 8-K | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0000709283-25-000033 |
| 2025-08-2621:26 ET | 8-K | 3.01 Delisting notice; 8.01 Other events; 9.01 Financial statements and exhibits | 0000709283-25-000029 |
| 2025-08-2620:54 ET | 10-K | Annual reportPeriod 2025-03-31 | 0000709283-25-000027 |
| 2025-08-1820:02 ET | 8-K | 1.02 Termination of a material agreement; 2.02 Results of operations; 5.02 Departure or appointment of officers or directors; 8.01 Other events | 0000709283-25-000023 |
| 2025-08-0820:31 ET | 8-K | 4.02 Non-reliance on financial statements | 0000709283-25-000021 |
| 2025-07-2320:21 ET | 8-K | 3.01 Delisting notice; 8.01 Other events; 9.01 Financial statements and exhibits | 0000709283-25-000018 |
| 2025-07-0821:04 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0000709283-25-000016 |
| 2025-06-1820:00 ET | 8-K | 5.02 Departure or appointment of officers or directors; 5.03 Amendment to articles or bylaws; 9.01 Financial statements and exhibits | 0001193125-25-142697 |
| 2025-06-0313:00 ET | 8-K | 2.02 Results of operations; 5.02 Departure or appointment of officers or directors; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-25-133841 |
| 2025-05-0620:51 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000709283-25-000014 |
| 2025-04-2921:08 ET | 8-K | 5.07 Shareholder vote results | 0000709283-25-000011 |
| 2025-04-1720:05 ET | SCHEDULE 13D/A | Ownership report, active investor, amended | 0000950170-25-055369 |
| 2025-04-1701:35 ET | 8-K | 8.01 Other events; 9.01 Financial statements and exhibits | 0000709283-25-000007 |
| 2025-04-0321:14 ET | 8-K | 5.02 Departure or appointment of officers or directors; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-25-072468 |
| 2025-03-3122:45 ET | SCHEDULE 13D/A | Ownership report, active investor, amended | 0000950170-25-047962 |
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 24, 2026, 14:56 ET. Listed shows no prices and gives no investment advice.