# Mark Millett

> Mark D. Millett is the co-founder, chairman and chief executive officer of Steel Dynamics, based in Fort Wayne, Indiana. A University of Surrey metallurgy graduate and former Nucor metallurgist, he co-founded the business in 1993 and became CEO in 2012. His career connects electric arc furnace steelmaking, mill construction, metals recycling and an emphasis on employee ownership culture. He is scheduled to become executive chairman on January 1, 2027, when Theresa Wagler becomes president and CEO.

- **Role:** Co-founder, Chairman and Chief Executive Officer at Steel Dynamics, Inc.
- **Organizations:** Steel Dynamics, Inc., Nucor Corporation (former employer), OmniSource Corporation (former President and Chief Operating Officer), Steel Manufacturers Association (past chairman)
- **Education:** Bachelor’s degree in metallurgy, University of Surrey
- **Known for:** Co-founded Steel Dynamics in 1993., Responsible for design, construction and startup of Steel Dynamics steel mills, including Butler melting and casting operations., Electric Metal Makers Guild Billy Wallis Award recipient, 2000.

## Career timeline

- **1981** — Arrived in the United States and spent a winter in Aspen washing dishes and skiing.
- **Before 1993** — Worked for Nucor for 12 years; managed the Crawfordsville melt shop during development of thin-slab casting.
- **1993** — Co-founded Steel Dynamics with Keith Busse and Richard Teets.
- **1996** — Steel production began at the company’s first flat-roll mill in Butler, Indiana; Steel Dynamics went public.
- **1998–2008** — Responsible for Steel Dynamics’ flat-roll mill operations.
- **2008** — Named Executive Vice President for Metals Recycling and Ferrous Resources and President and COO of OmniSource.
- **2012** — Became CEO of Steel Dynamics on January 1.
- **2021** — Became board chairman in May.
- **2022** — Steel Dynamics announced its investment in a recycled aluminum flat-rolled mill and two slab centers.
- **2026** — Company announced that he will become executive chairman on January 1, 2027, as Theresa Wagler succeeds him as CEO.

## Achievements

- Co-founded Steel Dynamics in 1993.
- Responsible for design, construction and startup of Steel Dynamics steel mills, including Butler melting and casting operations.
- Electric Metal Makers Guild Billy Wallis Award recipient, 2000.
- AIST Steelmaker of the Year, 2014 and 2022.
- Steel Manufacturers Association James F. Collins Achievement in Advocacy Award, 2019.
- Willy Korf/Ken Iverson Steel Vision Award, 2024.
- Institute of Materials, Minerals & Mining Bessemer Gold Medal, 2025.
- Harbor Aluminum Gene Greenberg World’s Aluminum Executive of the Year Award, 2025.
- Recognized as an honorary graduand by the University of Surrey in July 2025.

## Latest updates

- **2026-10** — On October 19, Steel Dynamics reported Q3 2026 net sales of $6.5 billion and net income of $756 million. Millett discussed the aluminum startup, including a coolant-related quality issue that the company said it had addressed.
- **2026-08** — On August 4, Steel Dynamics announced that Theresa Wagler will become president and CEO effective January 1, 2027, and Millett will become executive chairman.
- **2025-07** — University of Surrey listed Millett as an honorary graduand in its July 16 Faculty of Engineering and Physical Sciences ceremony programme.

## Links

- Website: https://www.steeldynamics.com/mark-d-millett/
- LinkedIn: https://www.linkedin.com/in/mark-millett-b0834989

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Profile page: https://yespress.io/mark-millett
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Last updated: 2026-10-21