AVISTA CORP reports

Company location: Spokane, WA
Fiscal year end: 31 December

AVISTA CORP has filed 2,727 SEC EDGAR filings since 20 Jan 1994

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SEC filing history

Showing 1-25 of 1,000 matching filings.

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1

4

PRIMARY DOCUMENT

Filing date: 16 Jun 2026
Reporting date: 15 Jun 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-03701

8-K

Filing date: 12 Jun 2026
Reporting date: 12 Jun 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-03701

8-K

Filing date: 02 Jun 2026
Reporting date: 29 May 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-03701

8-K

Filing date: 20 May 2026
Reporting date: 14 May 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 18 May 2026
Reporting date: 15 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 14 May 2026
Reporting date: 14 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-03701

8-K

Filing date: 13 May 2026
Reporting date: 13 May 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 11 May 2026
Reporting date: 08 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 11 May 2026
Reporting date: 08 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 11 May 2026
Reporting date: 08 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 11 May 2026
Reporting date: 08 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 11 May 2026
Reporting date: 08 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 11 May 2026
Reporting date: 08 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 11 May 2026
Reporting date: 08 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 11 May 2026
Reporting date: 08 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 11 May 2026
Reporting date: 08 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 11 May 2026
Reporting date: 08 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 07 May 2026
Reporting date: 07 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

144 File 001-03701

144 filing

Filing date: 07 May 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-03701

8-K

Filing date: 05 May 2026
Reporting date: 05 May 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

10-Q File 001-03701

10-Q

Filing date: 05 May 2026
Reporting date: 31 Mar 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

SCHEDULE 13G File 005-35285

SCHEDULE 13G filing

Filing date: 29 Apr 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SCHEDULE 13G File 005-35285

SCHEDULE 13G filing

Filing date: 28 Apr 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

S-8 File 333-295354

S-8

Filing date: 27 Apr 2026
Reporting date: Not listed
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 16 Apr 2026
Reporting date: 15 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

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