Executive Change · Reg FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549   Form 8-K   CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934   Date of Report (Date of earliest event reported) : June 4, 2020   CARPENTER TECHNOLOGY CORPORATION (Exact name of registrant as specified in its charter)   Delaware   1-5828   23-0458500 (State of or other jurisdiction of incorporation)   (Commission File Number)   (IRS Employer I.D. No.)   1735 Market Street Philadelphia , Pennsylvania       19103 (Address of principal executive offices)       (Zip Code)   ( 610 ) 208-2000 Registrant’s telephone number, including area code   Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:   ¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)   ¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)   ¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))   ¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))   Securities registered or required to be registered pursuant to Section 12(b) of the Act:   Title of each class   Trading Symbol   Name of each exchange on which registered Common Stock, $5 Par Value   CRS   New York Stock Exchange   Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b.2 of this chapter).   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 accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ¨             Item 5.02 - Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.   On June 4, 2020, Michael Murtagh resigned as Vice President and Group President – Specialty Alloys Operations (SAO) of Carpenter Technology Corporation (the “ Company ”), effective June 30, 2020, in conjunction with the Company’s reduction of total global salaried positions. Mr. Murtagh will remain an employee of the Company through August 31, 2020.   Item 7.01 – Regulation FD Disclosure.   On June 4, 2020, the Company issued a press release announcing certain actions it took to enhance long-term success of the Company. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K.   Item 9.01 - Financial Statements and Exhibits   (d)  Exhibits   Exhibit No.    Descriptions       99.1   Press Release dated June 4, 2020.       104.1   Cover Page Interactive Data File (embedded within the Inline XBRL document)         Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.     CARPENTER TECHNOLOGY CORPORATION       By /s/ Timothy Lain     Timothy Lain     Vice President and Chief Financial Officer   Date: June 8, 2020