---
schema_version: "secwatch.filing_event.v1"
accession: "0000824142-25-000030"
form_type: "8-K"
ticker: "AAON"
cik: "0000824142"
company_name: "AAON, INC."
filed_at: "2025-02-20T23:59:59+00:00"
generated_at: "2026-05-26T09:57:53.369646+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# AAON CEO Gary Fields steps down; Matt Tobolski to become CEO effective May 13, 2025

## Summary
- Gary Fields transitions to special advisor to the Board after serving as CEO since May 2020.
- Matt Tobolski (current President/COO) appointed CEO and President, effective May 13, 2025.
- Tobolski previously co-founded BASX (acquired by AAON in Dec 2021) and has led COO role since Jan 2024.
- Fields will remain on the Board; transition intended to be seamless with three-month handoff period.
- Press release cites data center cooling capacity investments as part of growth strategy under Tobolski.

## SEC filing metadata
- accession: 0000824142-25-000030
- form_type: 8-K
- ticker: AAON
- cik: 0000824142
- company_name: AAON, INC.
- filed_at: 2025-02-20T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/824142/000082414225000030/0000824142-25-000030-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/824142/000082414225000030/aaon-20250218.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000824142-25-000030
- JSON: https://secwatch.observer/filing/0000824142-25-000030.json
- Plain text: https://secwatch.observer/filing/0000824142-25-000030.txt

## Key facts
- Executive change
  Matt J. Tobolski was appointed as Chief Executive Officer at AAON, INC..
  - Action: appointed CEO and President
  - Role: Chief Executive Officer
  source text: Matt J. Tobolski, PhD, will assume the role of Chief Executive Officer (in addition to his current position of President), also to be effective May 13, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/824142/000082414225000030/0000824142-25-000030-index.htm

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