---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-21-143469"
form_type: "8-K"
ticker: "STLD"
cik: "0001022671"
company_name: "STEEL DYNAMICS INC"
filed_at: "2021-11-24T23:59:59+00:00"
generated_at: "2026-06-28T05:23:54.900079+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Steel Dynamics appoints Luis M. Sierra as new independent director

## Summary
- Appointed effective November 18, 2021; term ends May 2022.
- Sierra is President and CEO of NOVA Chemicals, a $3.2B revenue private chemicals firm.
- Previously held senior roles at BP, including CEO of BP Global Aromatics.
- Sierra will serve on the Steel Dynamics Compensation Committee.
- Holds B.S. and M.S. in Mechanical Engineering and an MBA.

## SEC filing metadata
- accession: 0001104659-21-143469
- form_type: 8-K
- ticker: STLD
- cik: 0001022671
- company_name: STEEL DYNAMICS INC
- filed_at: 2021-11-24T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1022671/000110465921143469/0001104659-21-143469-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1022671/000110465921143469/tm2130607d3_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-21-143469
- JSON: https://secwatch.observer/filing/0001104659-21-143469.json
- Plain text: https://secwatch.observer/filing/0001104659-21-143469.txt

## Key facts
- Executive change
  Luis M. Sierra was appointed as Director at STEEL DYNAMICS INC.
  - Action: appointed
  - Role: Director
  source text: On November 18, 2021, the Board of Directors of Steel Dynamics, Inc. appointed Luis M. Sierra, age 58, as a new director.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1022671/000110465921143469/0001104659-21-143469-index.htm

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