QUANTUM CORP /DE/ — EFFECT Filings
11 EFFECT filings on record
This page lists all EFFECT filings submitted to the SEC by QUANTUM CORP /DE/ (QMCO), sorted by most recent first. Each row links to the full filing on EdgarLookup. QUANTUM CORP /DE/ has filed 11 EFFECT documents with the SEC since 2012. To view all SEC filings by QUANTUM CORP /DE/, see the full filings list.
All
10-K
10-K/A
10-K405
10-Q
10-Q/A
144
15-12G
25-NSE
3
3/A
4
4/A
424B2
424B3
424B5
425
5
8-A12B
8-A12G
8-K
8-K/A
ARS
AW
CERT
CORRESP
D
DEF 14A
DEF 14C
DEFA14A
DEFC14A
DEFR14A
DFAN14A
EFFECT
NT 10-K
NT 10-Q
POS AM
PRE 14A
PRE 14C
PREC14A
PRER14A
PRRN14A
RW
S-1
S-1/A
S-3
S-3/A
S-3ASR
S-4
S-4/A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SC TO-I
SC TO-I/A
SCHEDULE 13D
SCHEDULE 13D/A
SCHEDULE 13G/A
SD
SD/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| EFFECT | — | 9999999995-26-000653 | Feb 23, 2026 | — |
| EFFECT | — | 9999999995-25-003355 | Nov 21, 2025 | — |
| EFFECT | — | 9999999995-25-003172 | Sep 30, 2025 | — |
| EFFECT | — | 9999999995-25-001270 | Apr 28, 2025 | — |
| EFFECT | — | 9999999995-25-000396 | Feb 11, 2025 | — |
| EFFECT | — | 9999999995-23-000111 | Jan 13, 2023 | — |
| EFFECT | — | 9999999995-21-004875 | Dec 29, 2021 | — |
| EFFECT | — | 9999999995-21-003297 | Aug 24, 2021 | — |
| EFFECT | — | 9999999995-21-000611 | Feb 11, 2021 | — |
| EFFECT | — | 9999999995-20-003460 | Dec 9, 2020 | — |
| EFFECT | — | 9999999995-06-000852 | Jul 21, 2006 | — |