X0306 4 2018-02-14 0 0001598428 TimkenSteel Corp TMST 0001205047 TIMKEN WARD J JR 1835 DUEBER AVENUE, S.W. CANTON OH 44706 1 1 0 0 President, CEO, Chairman Common Stock 133681 D Common Stock 150000 I By Self as Manager of LLC Common Stock 8934 I Savings Inv. Plan Common Stock 1405 I By Spouse Common Stock 8477 I By Child Common Stock 8127 I By Child Common Stock 26500 I By self as Co-Trustee and beneficiary Common Stock 3000 I By self as Co-Trustee Nonqualified Stock Option (Right to buy) 16.57 2018-02-14 4 M 0 202200 0 A 2028-02-14 Common Stock 202200 202200 D By self as sole manager of the WJ Timken Jr Family, LLC. Members of the LLC include the reporting person, immediate family members and trusts for the benefit of immediate family members. DISCLAIMER: Undersigned disclaims all beneficial ownership By self as Co-Trustee and beneficiary of the Ward J. Timken Trust FBO Ward J. Timken, Jr. By self as Co-Trustee of the Ward J. Timken Trust FBO Grandchildren Nonqualified stock option with limited transferability granted pursuant to the TimkenSteel Corporation Long-Term Incentive Plan. Option becomes exercisable in annual 25 percent increments beginning February 14, 2019, the anniversary of the date of the grant. Option becomes fully exercisable upon the occurrence of a change in control of the Company or other similar event. Ward J. Timken, Jr. 2018-02-15