---
schema_version: "secwatch.filing_event.v1"
accession: "0000875357-22-000053"
form_type: "8-K"
ticker: "BOKF"
cik: "0000875357"
company_name: "BOK FINANCIAL CORP"
filed_at: "2022-11-16T23:59:59+00:00"
generated_at: "2026-06-21T17:53:34.640448+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# BOK Financial CFO Steven Nell to retire March 31, 2023; Marty Grunst named successor, Mindy Mahaney becomes CRO

## Summary
- CFO Steven Nell retires after 30 years with BOK Financial, over 20 as CFO; effective March 31, 2023.
- Chief Risk Officer Marty Grunst will become CFO; Grunst has been with company since 2009, previously treasurer.
- Mindy Mahaney promoted to Chief Risk Officer; previously COO for wealth management, with BOKF since 2008.
- Transition is orderly; Nell cites collaborative culture; CEO Stacy Kymes praises both successors.

## SEC filing metadata
- accession: 0000875357-22-000053
- form_type: 8-K
- ticker: BOKF
- cik: 0000875357
- company_name: BOK FINANCIAL CORP
- filed_at: 2022-11-16T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- 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/875357/000087535722000053/0000875357-22-000053-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/875357/000087535722000053/bokf-20221116.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000875357-22-000053
- JSON: https://secwatch.observer/filing/0000875357-22-000053.json
- Plain text: https://secwatch.observer/filing/0000875357-22-000053.txt

## Key facts
- Executive change
  Steven Nell departed as Chief Financial Officer at BOK FINANCIAL CORP.
  - Action: will retire
  - Role: Chief Financial Officer
  source text: BOK Financial Corporation announced that Chief Financial Officer Steven Nell will retire effective March 31, 2023
  evidence_url: https://www.sec.gov/Archives/edgar/data/875357/000087535722000053/0000875357-22-000053-index.htm
- Executive change
  Mindy Mahaney was appointed as Chief Risk Officer at BOK FINANCIAL CORP.
  - Action: will assume
  - Role: Chief Risk Officer
  source text: Mindy Mahaney will assume the role of Chief Risk Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/875357/000087535722000053/0000875357-22-000053-index.htm
- Executive change
  Marty Grunst changed role as Chief Financial Officer at BOK FINANCIAL CORP.
  - Action: will become
  - Role: Chief Financial Officer
  source text: Marty Grunst will become the company's next Chief Financial Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/875357/000087535722000053/0000875357-22-000053-index.htm

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