QUANTUM CORP /DE/ — SD Filings
12 SD filings on record
This page lists all SD 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 12 SD 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 |
|---|---|---|---|---|
| SD | SD | 0000709283-25-000015 | May 28, 2025 | — |
| SD | SD | 0000709283-24-000012 | May 30, 2024 | — |
| SD | SD | 0000709283-23-000011 | May 31, 2023 | — |
| SD | SD | 0000709283-22-000017 | May 31, 2022 | — |
| SD | SD | 0000709283-21-000025 | May 28, 2021 | — |
| SD | SD | 0001628280-20-008503 | May 28, 2020 | — |
| SD | SD | 0001628280-19-007474 | Jun 3, 2019 | — |
| SD | SD | 0001628280-18-007147 | May 24, 2018 | — |
| SD | SPECIALIZED DISCLOSURE REPORT | 0001628280-17-004951 | May 4, 2017 | — |
| SD | SPECIALIZED DISCLOSURE REPORT | 0001206774-16-005980 | May 19, 2016 | — |
| SD | SPECIALIZED DISCLOSURE REPORT | 0001206774-15-001680 | May 14, 2015 | — |
| SD | SPECIALIZED DISCLOSURE REPORT | 0001206774-14-001836 | Jun 2, 2014 | — |