Sphere 3D Corp. — DEFA14A Filings
8 DEFA14A filings on record
This page lists all DEFA14A filings submitted to the SEC by Sphere 3D Corp. (ANY), sorted by most recent first. Each row links to the full filing on EdgarLookup. Sphere 3D Corp. has filed 8 DEFA14A documents with the SEC since 2013. To view all SEC filings by Sphere 3D Corp., see the full filings list.
All
10-K
10-K/A
10-Q
144
20-F
3
3/A
4
4/A
40-F
40-F/A
40FR12G
424B2
424B3
424B4
424B5
425
6-K
6-K/A
8-A12B
8-K
8-K/A
CERTNAS
CORRESP
CT ORDER
D
D/A
DEF 14A
DEFA14A
EFFECT
F-1
F-1/A
F-3
F-3/A
F-3MEF
F-4
F-4/A
F-X
F-X/A
PRE 14A
PREM14A
PRER14A
RW
S-1
S-1/A
S-3
S-3/A
S-8
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13G
SCHEDULE 13G/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| DEFA14A | DEFA14A | 0001591956-25-000026 | Dec 5, 2025 | — |
| DEFA14A | DEFA14A | 0001628280-25-018224 | Apr 17, 2025 | — |
| DEFA14A | DEFA14A | 0001591956-24-000009 | Apr 5, 2024 | — |
| DEFA14A | DEFA14A | 0001591956-23-000017 | May 12, 2023 | — |
| DEFA14A | SOLICITING MATERIAL PURSUANT TO 240.14A-12 | 0001213900-22-001767 | Jan 12, 2022 | — |
| DEFA14A | FORM DEFA14A | 0001062993-18-002395 | May 25, 2018 | — |
| DEFA14A | DEFA14A | 0001062993-18-002299 | May 17, 2018 | — |
| DEFA14A | FORM 8-K | 0001062993-18-000940 | Feb 21, 2018 | — |