---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-047002"
form_type: "8-K"
ticker: "AVA"
cik: "0000104918"
company_name: "AVISTA CORP"
filed_at: "2023-09-07T23:59:59+00:00"
generated_at: "2026-06-10T22:31:33.766524+00:00"
event_type: "leadership"
sentiment: "positive"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Avista names Heather Rosentrater as President and COO, first female president in 134-year history

## Summary
- Heather Rosentrater named President and COO effective Oct. 1, 2023; first female president in Avista's 134-year history.
- Dennis Vermillion remains CEO; Rosentrater previously served as SVP and COO.
- Bryan Cox promoted to Senior Vice President, Safety & Chief People Officer, effective same date.
- Rosentrater joined Avista in 1996, led smart grid grants and innovation initiatives.

## SEC filing metadata
- accession: 0000950170-23-047002
- form_type: 8-K
- ticker: AVA
- cik: 0000104918
- company_name: AVISTA CORP
- filed_at: 2023-09-07T23:59:59+00:00
- event_type: leadership
- sentiment: positive
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/104918/000095017023047002/0000950170-23-047002-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/104918/000095017023047002/ava-20230907.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-047002
- JSON: https://secwatch.observer/filing/0000950170-23-047002.json
- Plain text: https://secwatch.observer/filing/0000950170-23-047002.txt

## Key facts
- Executive change
  Bryan Cox changed role as Senior Vice President, Safety & Chief People Officer at AVISTA CORP.
  - Action: promoted
  - Role: Senior Vice President, Safety & Chief People Officer
  source text: Also effective October 1, 2023, Vice President, Safety & Chief People Officer Bryan Cox will become Senior Vice President, Safety & Chief People Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/104918/000095017023047002/0000950170-23-047002-index.htm
- Executive change
  Heather Rosentrater was named as President and Chief Operating Officer at AVISTA CORP.
  - Action: named
  - Role: President and Chief Operating Officer
  source text: On September 7, 2023, Avista Corporation (Avista Corp. or the Company) named Heather Rosentrater as President and Chief Operating Officer, effective October 1, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/104918/000095017023047002/0000950170-23-047002-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.