--- schema_version: "secwatch.filing_event.v1" accession: "0001104659-26-090129" form_type: "8-K" ticker: "STLD" cik: "0001022671" company_name: "STEEL DYNAMICS INC" filed_at: "2026-08-04T13:57:03+00:00" generated_at: "2026-08-04T13:58:11.988969+00:00" event_type: "leadership" sentiment: "positive" materiality_score: 0.75 calibrated_materiality_score: 0.75 confidence: "high" source: SEC EDGAR --- # Steel Dynamics CEO Mark Millett to retire Jan 1, 2027; Theresa Wagler named successor ## Summary - 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. ## SEC filing metadata - accession: 0001104659-26-090129 - form_type: 8-K - ticker: STLD - cik: 0001022671 - company_name: STEEL DYNAMICS INC - filed_at: 2026-08-04T13:57:03+00:00 - event_type: leadership - sentiment: positive - materiality_score: 0.75 - calibrated_materiality_score: 0.75 - confidence: high - sec_items: 5.02, 7.01, 9.01 - EDGAR index: https://www.sec.gov/Archives/edgar/data/1022671/000110465926090129/0001104659-26-090129-index.htm - EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1022671/000110465926090129/tm2622182d1_8k.htm ## Machine-readable alternates - HTML: https://secwatch.observer/filing/0001104659-26-090129 - JSON: https://secwatch.observer/filing/0001104659-26-090129.json - Plain text: https://secwatch.observer/filing/0001104659-26-090129.txt ## Key facts - Executive change Miguel Alvarez was appointed as Executive Vice President and Chief Operating Officer Aluminum Flat Rolled Products and Metals Recycling Operations at STEEL DYNAMICS INC. - Action: appointed - Role: Executive Vice President and Chief Operating Officer Aluminum Flat Rolled Products and Metals Recycling Operations source text: Miguel Alvarez, the Company’s Senior Vice President Aluminum Group, will become the Company’s Executive Vice President and Chief Operating Officer Aluminum Flat Rolled Products and Metals Recycling Operations evidence_url: https://www.sec.gov/Archives/edgar/data/1022671/000110465926090129/0001104659-26-090129-index.htm - Executive change James Anderson was appointed as Executive Vice President and Chief Operating Officer Construction Products Operations at STEEL DYNAMICS INC. - Action: appointed - Role: Executive Vice President and Chief Operating Officer Construction Products Operations source text: James Anderson, the Company’s Senior Vice President Long Products Steel Group, will become the Company’s Executive Vice President and Chief Operating Officer Construction Products Operations evidence_url: https://www.sec.gov/Archives/edgar/data/1022671/000110465926090129/0001104659-26-090129-index.htm - Executive change Richard A. Poinsatte was appointed as Executive Vice President and Chief Financial Officer at STEEL DYNAMICS INC. - Action: appointed - Role: Executive Vice President and Chief Financial Officer source text: Richard A. Poinsatte, the Company’s Executive Vice President and Treasurer, will become the Company’s Executive Vice President and Chief Financial Officer evidence_url: https://www.sec.gov/Archives/edgar/data/1022671/000110465926090129/0001104659-26-090129-index.htm - Executive change Theresa E. Wagler was appointed as President and Chief Executive Officer at STEEL DYNAMICS INC. - Action: appointed - Role: President and Chief Executive Officer source text: Theresa E. Wagler, the Company’s Executive Vice President and Chief Financial Officer, will become the Company’s President and Chief Executive Officer evidence_url: https://www.sec.gov/Archives/edgar/data/1022671/000110465926090129/0001104659-26-090129-index.htm - Executive change Theresa E. Wagler was appointed as Member of the Board at STEEL DYNAMICS INC. - Action: appointed - Role: Member of the Board source text: Effective immediately, the Board appointed Ms. Wagler as a member of the Board evidence_url: https://www.sec.gov/Archives/edgar/data/1022671/000110465926090129/0001104659-26-090129-index.htm - Executive change Christopher Graham was appointed as Executive Vice President and Chief Operating Officer Flat Rolled Steel Operations at STEEL DYNAMICS INC. - Action: appointed - Role: Executive Vice President and Chief Operating Officer Flat Rolled Steel Operations source text: Christopher Graham, the Company’s Senior Vice President Flot Roll Steel Group, will become the Company’s Executive Vice President and Chief Operating Officer Flat Rolled Steel Operations evidence_url: https://www.sec.gov/Archives/edgar/data/1022671/000110465926090129/0001104659-26-090129-index.htm - Executive change Mark D. Millett was appointed as Executive Chairman at STEEL DYNAMICS INC. - Action: retired as CEO, appointed Executive Chairman - Role: Executive Chairman source text: Mark D. Millett, Steel Dynamics, Inc.’s (the “Company”) Chairman and Chief Executive Officer gave notice to the Company’s Board of Directors (the “Board”) of his intention to retire as Chief Executive Officer of the Company effective January 1, 2027. evidence_url: https://www.sec.gov/Archives/edgar/data/1022671/000110465926090129/0001104659-26-090129-index.htm - Executive change Barry Schneider was appointed as Executive Vice President and Chief Technology Officer at STEEL DYNAMICS INC. - Action: appointed - Role: Executive Vice President and Chief Technology Officer source text: Barry Schneider, the Company’s President and Chief Operating Officer, will become the Company’s Executive Vice President and Chief Technology Officer evidence_url: https://www.sec.gov/Archives/edgar/data/1022671/000110465926090129/0001104659-26-090129-index.htm This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.