---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-22-021246"
form_type: "8-K"
ticker: "MTUS"
cik: "0001598428"
company_name: "Metallus Inc."
filed_at: "2022-11-02T23:59:59+00:00"
generated_at: "2026-06-22T13:59:30.206698+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# TimkenSteel expands board to 11, appoints Baker and Chirekos as independent directors

## Summary
- Mary Ellen Baker, former EVP at Citizens Bank and PNC, brings technology and cybersecurity expertise.
- Nicholas J. Chirekos, ex-J.P. Morgan managing director, has 25+ years in investment banking and mining.
- Both appointed to Audit Committee; each deemed independent under SEC and NYSE rules.
- Compensation follows standard non-employee director policy as disclosed in March 2022 proxy.

## SEC filing metadata
- accession: 0000950170-22-021246
- form_type: 8-K
- ticker: MTUS
- cik: 0001598428
- company_name: Metallus Inc.
- filed_at: 2022-11-02T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1598428/000095017022021246/0000950170-22-021246-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1598428/000095017022021246/tmst-20221102.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-22-021246
- JSON: https://secwatch.observer/filing/0000950170-22-021246.json
- Plain text: https://secwatch.observer/filing/0000950170-22-021246.txt

## Key facts
- Executive change
  Nicholas J. Chirekos was appointed as Director at Metallus Inc..
  - Action: appointed
  - Role: Director
  source text: On November 2, 2022, the Board of Directors (the "Board") of TimkenSteel Corporation (the “Company”) voted to increase the size of the Board from ten directors to eleven directors and appointed Mary Ellen Baker and Nicholas J. Chirekos as directors of the Company, effective immediately, filling the vacancies on the Board.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1598428/000095017022021246/0000950170-22-021246-index.htm
- Executive change
  Mary Ellen Baker was appointed as Director at Metallus Inc..
  - Action: appointed
  - Role: Director
  source text: On November 2, 2022, the Board of Directors (the "Board") of TimkenSteel Corporation (the “Company”) voted to increase the size of the Board from ten directors to eleven directors and appointed Mary Ellen Baker and Nicholas J. Chirekos as directors of the Company, effective immediately, filling the vacancies on the Board.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1598428/000095017022021246/0000950170-22-021246-index.htm

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