QUANTUM CORP /DE/ — SC 13D Filings
7 SC 13D filings on record
This page lists all SC 13D 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 7 SC 13D 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 |
|---|---|---|---|---|
| SC 13D | SC 13D | 0001193125-22-086745 | Mar 28, 2022 | — |
| SC 13D | SCHEDULE 13D | 0001213900-20-008667 | Apr 6, 2020 | — |
| SC 13D | SCHEDULE 13D | 0000921895-15-002872 | Dec 28, 2015 | — |
| SC 13D | — | 0001214659-15-006135 | Aug 17, 2015 | — |
| SC 13D | SCHEDULE 13D | 0000921895-12-002127 | Nov 1, 2012 | — |
| SC 13D | SCHEDULE 13D | 0001193125-06-110930 | May 12, 2006 | — |
| SC 13D | SCHEDULE 13D | 0001012870-99-001677 | May 20, 1999 | — |