---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-026687"
form_type: "8-K"
ticker: "CENX"
cik: "0000949157"
company_name: "CENTURY ALUMINUM CO"
filed_at: "2025-03-21T23:59:59+00:00"
generated_at: "2026-05-24T09:35:48.947976+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Century Aluminum names Peter Trpkovski CFO, succeeding Gerald Bialek in planned transition

## Summary
- Trpkovski appointed EVP and CFO effective March 21, 2025; Bialek departs after planned transition.
- Trpkovski's annual base salary $450,000; target bonus 65% of base under 2025 Annual Incentive Plan.
- Long-term incentive target 160% of base; 50% time-vested stock units, 50% performance stock units for 2025-2027.
- Trpkovski joined Century in 2013; prior roles include SVP Finance and Treasurer, VP Finance and IR.
- Holds BSE in Electrical/Computer Engineering and MBA from University of Michigan; earlier at Citigroup and Johnson Controls.

## SEC filing metadata
- accession: 0001104659-25-026687
- form_type: 8-K
- ticker: CENX
- cik: 0000949157
- company_name: CENTURY ALUMINUM CO
- filed_at: 2025-03-21T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/949157/000110465925026687/0001104659-25-026687-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/949157/000110465925026687/tm2510008d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-026687
- JSON: https://secwatch.observer/filing/0001104659-25-026687.json
- Plain text: https://secwatch.observer/filing/0001104659-25-026687.txt

## Key facts
- Executive change
  Peter Trpkovski was appointed as Executive Vice President and Chief Financial Officer at CENTURY ALUMINUM CO.
  - Action: appointed
  - Role: Executive Vice President and Chief Financial Officer
  source text: has been appointed to Executive Vice President and Chief Financial Officer, effective March 21, 2025
  evidence_url: https://www.sec.gov/Archives/edgar/data/949157/000110465925026687/0001104659-25-026687-index.htm
- Executive change
  Gerald Bialek departed as Executive Vice President and Chief Financial Officer at CENTURY ALUMINUM CO.
  - Action: leave
  - Role: Executive Vice President and Chief Financial Officer
  source text: will leave his position as Executive Vice President and Chief Financial Officer as part of a planned transition
  evidence_url: https://www.sec.gov/Archives/edgar/data/949157/000110465925026687/0001104659-25-026687-index.htm

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