X0306 4 2015-08-17 0 0001598428 TimkenSteel Corp TMST 0000904698 CREEL DIANE C 1835 DUEBER AVE., S.W. CANTON OH 44706-2789 1 0 0 0 Common Shares 2015-08-17 4 P 0 2000 18.5496 A 12691 D Price reflects a weighted average purchase price for multiple transactions that ranged from $18.54 to $18.55 per share. The Reporting Person undertakes to provide, upon request by the Commission Staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares purchased at each separate price. The amount previously reported was estimated based on preliminary information regarding the spinoff of the Issuer from The Timken Company on June 30, 2014. The amount reflected corrects such information. /s/ Frank A. DiPiero, as Attorney-in-Fact 2015-08-18