On September 15, 2023, the Board of Directors of Steel Dynamics, Inc. (the ?Company?) appointed Jennifer L. Hamann, age 56, as a new independent director, with a term ending May 2024 coinciding with the Company?s regularly held Annual Meeting of Stockholders. She will also participate as a member of the Company?s Audit Committee. From 2020 through present, Ms. Hamann has served as the executive vice president and chief financial officer of Union Pacific Corporation (?Union Pacific?).

For many years, the Company has sold rail to Union Pacific and purchased transportation services from Union Pacific. In 2022, Union Pacific paid the Company approximately $19 million for rail purchases and the Company paid Union Pacific approximately $42 million for transportation services. These transactions were made on market terms and accounted for less than ½% of each Company?s revenues.

Ms. Hamann has been employed by the Union Pacific for over 30 years, including recently as Senior Vice President of Finance (April 2019 ? December 2019) and Vice President of Planning & Analysis (October 2017 ? March 2019), gaining significant cross-functional leadership experiences in areas such as, capital planning and analysis, debt and equity capital markets, marketing and sales, investor relations, audit, human resources, and corporate strategy.

Among numerous strong leaderships characteristics and logistics expertise, Ms. Hamann brings a diversified background to the Steel Dynamics Board. Additionally, she has extensive knowledge of business and regulations within Mexico based on her participation on multiple Union Pacific Mexican joint venture boards. Ms. Hamann earned an M.B.A. in business administration and a bachelor?s degree in finance from the University of Nebraska.

Ms. Hamann is currently not a member of another publicly traded company.