X0306 4 2021-08-11 0 0001598428 TimkenSteel Corp TMST 0001638813 WESTBROOKS KRISTOPHER R 1835 DUEBER AVE. SW CANTON OH 44706 0 1 0 0 EVP, Chief Financial Officer Common Shares 2021-08-11 4 M 0 15000 5.26 A 155350 D Common Shares 2021-08-11 4 S 0 15000 16.7592 D 140350 D Nonqualified Stock Option (Right to buy) 5.26 2021-08-11 4 M 0 15000 0.00 D 2030-03-02 Common Shares 15000 68000 D Price reported is the weighted average sale price for shares sold by the reporting owner on August 11, 2021. Shares were sold at a variety of prices ranging from $16.50 to $16.89. Vests in four equal annual installments beginning March 2, 2021. /s/ Kristine C. Syrvalin, as Attorney-in-Fact 2021-08-12