---
schema_version: "secwatch.filing_event.v1"
accession: "0001558370-22-005100"
form_type: "8-K"
ticker: "AEIS"
cik: "0000927003"
company_name: "ADVANCED ENERGY INDUSTRIES INC"
filed_at: "2022-04-06T23:59:59+00:00"
generated_at: "2026-06-26T09:16:48.519566+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Advanced Energy appoints Elizabeth Vonne as EVP, General Counsel; Tom McGimpsey retires

## Summary
- Elizabeth K. Vonne appointed EVP, General Counsel and Corporate Secretary effective April 15, 2022.
- Vonne joins from Mesa Laboratories where she was VP Legal, General Counsel and Secretary.
- Tom McGimpsey retires after more than 13 years as EVP, General Counsel and Corporate Secretary.
- Vonne will report to CEO Steve Kelley and oversee legal, compliance, and governance.
- Appointment is a planned succession; Vonne brings 20+ years legal experience including law firm partnerships.

## SEC filing metadata
- accession: 0001558370-22-005100
- form_type: 8-K
- ticker: AEIS
- cik: 0000927003
- company_name: ADVANCED ENERGY INDUSTRIES INC
- filed_at: 2022-04-06T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/927003/000155837022005100/0001558370-22-005100-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/927003/000155837022005100/aeis-20220406x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001558370-22-005100
- JSON: https://secwatch.observer/filing/0001558370-22-005100.json
- Plain text: https://secwatch.observer/filing/0001558370-22-005100.txt

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