X0306 4 2014-06-30 0 0001598428 TimkenSteel Corp TMST 0001609306 Holding Christopher J 1835 DUEBER AVE., S.W. CANTON OH 44706 0 1 0 0 See Remarks Common Shares 4354 D Common Shares 2744 I By 401(k) Plan Stock Option (Right to buy) 13.61 2014-06-30 4 A 0 2250 0.00 A 2014-06-30 2020-02-08 Common Shares 2250 2250 D Stock Option (Right to buy) 29.95 2014-06-30 4 A 0 2800 0.00 A 2021-02-08 Common Shares 2800 2800 D Stock Option (Right to buy) 31.06 2014-06-30 4 A 0 2000 0.00 A 2022-02-09 Common Shares 2000 2000 D Stock Option (Right to buy) 33.76 2014-06-30 4 A 0 1800 0.00 A 2023-02-07 Common Shares 1800 1800 D Stock Option (Right to buy) 34.26 2014-06-30 4 A 0 5600 0.00 A 2024-02-13 Common Shares 5600 5600 D Adjusted distribution resulting from the spinoff of Issuer from The Timken Company ("Timken") on June 30, 2014 (the "Spinoff"). Exempt acquisitions under Rule 16a-9 being shown on a voluntary basis in this row are estimated as of June 30, 2014 based on preliminary information regarding the Spinoff. Final amounts, if different, will be reported in a subsequent filing. Award resulting from the Spinoff and related adjustment of outstanding Timken stock option. Information reported in this row is estimated as of June 30, 2014 based on preliminary information regarding the Spinoff. Final information, if different, will be reported in a subsequent filing. Includes 2,100 options to purchase Issuer common shares that are currently vested. Remaining options to purchase Issuer common shares vest on February 8, 2015. Includes 1,000 options to purchase Issuer common shares that are currently vested. Remaining options to purchase Issuer common shares vest in two equal annual installments beginning February 9, 2015. Includes 450 options to purchase Issuer common shares that are currently vested. Remaining options to purchase Issuer common shares vest in three equal annual installments beginning February 7, 2015. Vests in four equal annual installments beginning on February 13, 2015. Executive Vice President and Chief Financial Officer /s/ Frank A. DiPiero, as Attorney-in-Fact 2014-07-02