Steel Dynamics, Inc. (NASDAQ/GS: STLD) today announced that the company’s board of directors unanimously approved that effective January 1, 2027, Theresa E. Wagler will become the company’s President and Chief Executive Officer upon Mark D. Millett’s concurrent retirement as CEO and transition to Executive Chairman of the board of directors. Ms. Wagler will become a member of the Steel Dynamics’ board of directors effective immediately.

Today’s announcement reflects the culmination of a thoughtful and comprehensive succession planning process and supports continuity as Steel Dynamics continues to advance its strategy as a world leading metals solutions company.

“On behalf of the board of directors, I want to thank Mark for his exceptional leadership and contributions to the global industry and to the outstanding company he co-founded over 30 years ago,” said Kenneth Cornew, the company’s Lead Independent Director. “Under Mark’s leadership the company has gone through a period of unprecedented transformational growth, while strengthening Steel Dynamics entrepreneurial culture, strategic positioning, and opportunity for continued long-term success. We are thankful to have him transition into the role of Executive Chairman in the new year.

“We congratulate Theresa on her appointment as President and CEO,” continued Cornew. “Theresa has served as Executive Vice President and CFO since 2007 and has been an integral part of the strategy and leadership of the company since joining Steel Dynamics 28 years ago. She is disciplined, strategic, and a highly respected leader with a deep understanding of Steel Dynamics’ culture, strategy, and businesses. This appointment reflects our confidence in her ability to lead the company forward into its next chapter of growth and value creation for our teams, customers, and shareholders.”

“Theresa’s appointment recognizes her leadership as the company has grown,” said Millett. “We have worked together for decades, and she has played a pivotal role in our success. Theresa has earned the full confidence of the board and the leadership team, and I am proud and excited to transition the role of Chief Executive Officer to her.”

Richard A. Poinsatte, the company’s Executive Vice President and Treasurer, will succeed Wagler as the company’s Executive Vice President and Chief Financial Officer on January 1, 2027.