secwatch.observer — SEC 8-K summary
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Issuer:     STEEL DYNAMICS INC (STLD)
CIK:        0001022671
Form:       8-K
Filed at:   2026-08-04T13:57:03+00:00
Accession:  0001104659-26-090129
Event type: leadership
Sentiment:  positive
Materiality: 0.75
Item codes: 5.02, 7.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Steel Dynamics CEO Mark Millett to retire Jan 1, 2027; Theresa Wagler named successor
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- Mark D. Millett to retire as CEO effective Jan 1, 2027; will become Executive Chairman.
- Theresa E. Wagler, current EVP and CFO, appointed President and CEO effective Jan 1, 2027; also joins board immediately.
- Richard A. Poinsatte, EVP and Treasurer, to succeed Wagler as EVP and CFO on Jan 1, 2027.
- Additional senior leadership changes effective Sept 1, 2026: Barry Schneider becomes EVP and CTO; Alvarez, Anderson, Graham assume new COO roles.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1022671/000110465926090129/0001104659-26-090129-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1022671/000110465926090129/tm2622182d1_8k.htm
  HTML page:      https://secwatch.observer/filing/0001104659-26-090129

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer