AVISTA CORP — All Filings
1,000 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
All
10-12B/A
10-K
10-K/A
10-K405
10-Q
11-K
11-K/A
144
25-NSE
3
3/A
4
4/A
424B1
424B2
424B3
424B5
425
5
8-A12B
8-A12B/A
8-K
8-K/A
ARS
CORRESP
DEF 14A
DEFA14A
DEFM14A
DFAN14A
EFFECT
FWP
NO ACT
POS AM
PRE 14A
PREM14A
S-3
S-3/A
S-3ASR
S-3D
S-4
S-4/A
S-8
S-8 POS
SC 13E4
SC 13E4/A
SC 13G
SC 13G/A
SCHEDULE 13G/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SCHEDULE 13G/A | — | 0000102909-26-000720 | Mar 26, 2026 | — |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000045 | Mar 17, 2026 | Mar 16, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000044 | Mar 13, 2026 | — |
| 144 | — | 0001973379-26-000100 | Mar 13, 2026 | — |
| 4 | PRIMARY DOCUMENT | 0001174957-26-000003 | Mar 10, 2026 | Mar 9, 2026 |
| 8-K | 8-K | 0000104918-26-000042 | Mar 4, 2026 | Feb 27, 2026 |
| 4/A | PRIMARY DOCUMENT | 0000104918-26-000040 | Mar 4, 2026 | Mar 2, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000039 | Mar 3, 2026 | Mar 2, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000038 | Mar 3, 2026 | Mar 2, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000037 | Mar 3, 2026 | Mar 2, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000036 | Mar 3, 2026 | Mar 2, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000035 | Mar 3, 2026 | Mar 2, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000034 | Mar 3, 2026 | Mar 2, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000033 | Mar 3, 2026 | Mar 2, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000032 | Mar 3, 2026 | Mar 2, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000031 | Mar 3, 2026 | Mar 2, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000030 | Mar 3, 2026 | Mar 2, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000029 | Mar 3, 2026 | Mar 2, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000028 | Mar 3, 2026 | Mar 2, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000027 | Feb 26, 2026 | — |
| 144 | — | 0001973379-26-000051 | Feb 26, 2026 | — |
| 10-K | 10-K | 0001193125-26-067872 | Feb 25, 2026 | Dec 31, 2025 |
| 8-K | 8-K | 0001193125-26-067873 | Feb 25, 2026 | — |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000026 | Feb 18, 2026 | Feb 17, 2026 |
| 5 | PRIMARY DOCUMENT | 0000104918-26-000025 | Feb 12, 2026 | Jan 15, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000024 | Feb 10, 2026 | Feb 9, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000023 | Feb 10, 2026 | Feb 9, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000022 | Feb 10, 2026 | Feb 9, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000021 | Feb 10, 2026 | Feb 9, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000020 | Feb 10, 2026 | Feb 9, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000019 | Feb 10, 2026 | Feb 9, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000018 | Feb 10, 2026 | Feb 9, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000017 | Feb 10, 2026 | Feb 9, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000016 | Feb 10, 2026 | Feb 9, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000015 | Feb 10, 2026 | Feb 9, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000014 | Feb 10, 2026 | Feb 9, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000013 | Feb 4, 2026 | Feb 2, 2026 |
| 8-K | 8-K | 0001193125-26-015443 | Jan 16, 2026 | — |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000012 | Jan 8, 2026 | Jan 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000011 | Jan 8, 2026 | Jan 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000010 | Jan 8, 2026 | Jan 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000009 | Jan 8, 2026 | Jan 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000008 | Jan 8, 2026 | Jan 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000007 | Jan 8, 2026 | Jan 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000006 | Jan 8, 2026 | Jan 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000005 | Jan 8, 2026 | Jan 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000004 | Jan 8, 2026 | Jan 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000003 | Jan 8, 2026 | Jan 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000002 | Jan 8, 2026 | Jan 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000104918-26-000001 | Jan 8, 2026 | Jan 6, 2026 |