CLEVELAND-CLIFFS INC.   •   200 PUBLIC SQUARE   •   SUITE 3300   •   CLEVELAND, OH 44114-2544  NEWS RELEASE  Cleveland-Cliffs Announces Executive Management Promotions  CLEVELAND – August 30, 2021 – Cleveland-Cliffs Inc. (NYSE: CLF) today announced the promotion of  three key leaders at the executive level, effective September 1, 2021. The announcement comes as Cliffs  seeks to broaden its already robust raw material portfolio by expanding its scrap recycling presence, an  activity that will fall under a newly created division named Cleveland-Cliffs Services. The ongoing steel  business stays within Cleveland-Cliffs Steel, an already existing Cleveland-Cliffs Inc.’s division.  • Clifford T. Smith, currently EVP, Chief Operating Officer, has been promoted to EVP & President, Cleveland-Cliffs Steel. He will continue to lead both operations and commercial for all business segments including Steelmaking, Tooling and Stamping, and Tubular Components. • Keith A. Koci, currently EVP, Chief Financial Officer, has been promoted to EVP & President, Cleveland-Cliffs Services. He will assume corporate responsibility for procurement, logistics, IT, and scrap recycling. He will lead the growth of Cliffs’ raw material portfolio, with a primary emphasis on expanding Cliffs’ presence in the domestic scrap recycling market. • Celso L. Goncalves, currently SVP, Finance & Treasurer, has been promoted to EVP, Chief Financial Officer. He will lead the financial organization for Cleveland-Cliffs Inc., assuming executive responsibility for Finance, Accounting, Tax, Treasury and Investor Relations. He will also continue to lead key strategic corporate and business development initiatives. All three individuals will report directly to Lourenco Goncalves, Cleveland-Cliffs Inc. Chairman, President  and CEO, who said, “Today’s announcement represents the formation of the ideal leadership structure for  our recently transformed company going forward, with promotions to the three members of my core team.  Cliff Smith, Keith Koci and Celso Goncalves have been critical contributors to our remarkable transformation  over the past two years, and I will rely on them to continue to execute on our strategic objectives. I plan to  be in this seat for the long term, and the collaboration of these three executives and their work with me are  paramount to the continued success of our company.”  Mr. Goncalves added, “First, Cliff has been and will continue to be my second in command at Cleveland- Cliffs, and the success of the integration of our two major acquisitions speaks to his effective leadership.  Second, in this new era of steel decarbonization, scrap will become precious metal, and Keith’s deep  EXHIBIT 99.1 
 
 
  CLEVELAND-CLIFFS INC.   •   200 PUBLIC SQUARE   •   SUITE 3300   •   CLEVELAND, OH 44114-2544     2  background in M&A makes him the perfect person to lead this venture. And finally, through his successful  career both in investment banking and here at Cliffs leading our capital structure transformation initiatives,  Celso has perfected the skills I need in a CFO at this time.”     Executive Biographies    Clifford T. Smith joined Cleveland-Cliffs in 2003, and has served as Executive Vice President, Chief  Operating Officer (January 2019 – present); and Executive Vice President, Business Development (April  2015 – January 2019). Prior to these roles, he has also held various senior management positions including  oversight of Seaborne Iron Ore, Latin American Operations and Cliffs Michigan Operations. Prior to joining  Cliffs, Mr. Smith held mine management positions with Asarco, Southern Peru Copper Corporation, and  Amax Coal. He received a B.S. in mining engineering from the South Dakota School of Mines and  Technology.    Keith A. Koci joined Cleveland-Cliffs in 2019, and has served as Executive Vice President, Chief Financial  Officer for his entire tenure. Prior to joining Cliffs, Mr. Koci served most recently as Senior Vice President  and Chief Financial Officer for Metals USA. He also previously held the roles of Senior Vice President,  Business Development; Vice President, Corporate Controller; Director of Budgeting; and Regional  Controller for Metals USA. Mr. Koci graduated from the University of Illinois – Chicago with a B.S. in  Business Administration.     Celso L. Goncalves joined Cleveland-Cliffs in 2016, and has served as Senior Vice President, Finance &  Treasurer (March 2020 – Present); Vice President, Treasurer (December 2017 – March 2020); and  Assistant Treasurer (September 2016 – December 2017). Prior to joining Cliffs, Mr. Goncalves worked in  Investment Banking at Deutsche Bank in New York and at Jefferies in New York and São Paulo, Brazil. Mr.  Goncalves earned his M.B.A. from the Tepper School of Business at Carnegie Mellon University and his  B.S. from the Marshall School of Business at the University of Southern California.    About Cleveland-Cliffs Inc.  Cleveland-Cliffs is the largest flat-rolled steel producer in North America. Founded in 1847 as a mine  operator, Cliffs also is the largest manufacturer of iron ore pellets in North America. The Company is  vertically integrated from mined raw materials and direct reduced iron to primary steelmaking and  downstream finishing, stamping, tooling, and tubing. The Company serves a diverse range of markets due  to its comprehensive offering of flat-rolled steel products and is the largest supplier of steel to the automotive  industry in North America. Headquartered in Cleveland, Ohio, Cleveland-Cliffs employs approximately  25,000 people across its mining, steel and downstream manufacturing operations in the United States and  Canada. For more information, visit www.clevelandcliffs.com.     
 
 
  CLEVELAND-CLIFFS INC.   •   200 PUBLIC SQUARE   •   SUITE 3300   •   CLEVELAND, OH 44114-2544     3  Source: Cleveland-Cliffs Inc.     MEDIA CONTACT:  Patricia Persico  Director, Corporate Communications   (216) 694-5316    INVESTOR CONTACT:  Paul Finan  Vice President, Investor Relations  (216) 694-6544    ###