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☑ ☐ UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , D.C. 20549 FORM 10 - Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30 , 2021 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number : 1-36313 TIMKENSTEEL TIMKENSTEEL CORPORATION ( Exact name of registrant as specified in its charter ) Ohio ( State or other jurisdiction of incorporation or organization ) 1835 Dueber Avenue SW , Canton , OH ( Address of principal executive offices ) 330.471.7000 ( Registrant's telephone number , including area code ) 46-4024951 ( I.R.S. Employer Identification No. ) 44706 ( Zip Code ) Securities registered pursuant to Section 12 ( b ) of the Securities Exchange Act of 1934 : Title of each class Common shares Trading symbol TMST Name of exchange in which registered New York Stock Exchange Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes + No ☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes No □ Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , or a smaller reporting company . See the definitions of “ large accelerated filer , ” “ accelerated filer ” and “ smaller reporting company ” in Rule 12b - 2 of the Exchange Act . Large accelerated filer ☐ ☑ Non - accelerated filer ☐ Accelerated filer Smaller reporting company Emerging growth company ☐ ☐ If an emerging growth company , indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial reporting accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . ☐ Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Yes ☐ No ☑ Indicate the number of shares outstanding of each of the issuer's classes of common stock , as of the latest practicable date . Class Common Shares , without par value Outstanding at October 31 , 2021 46,208,470