Executive Change

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): October 8, 2024     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 October 8, 2024, the Board of Directors (the “Board”) of Carpenter Technology Corporation (the “Company”) appointed Howard Yu as a member of the Board effective October 9, 2024. Mr. Yu will serve as a Class III director, with a term ending at the Company’s 2025 annual meeting of stockholders or until his successor is duly elected and qualified. He will serve on the Audit/Finance and Science, Technology and Sustainability Committees. The Board determined that Mr. Hu qualifies as an independent director under the director independence standards set forth in the rules and regulations of the Securities and Exchange Commission and the applicable listing standards of the New York Stock Exchange. Mr. Yu is not party to any arrangements or understandings with any other person pursuant to which he was appointed as a director. Mr. Yu does not have any family relationship with the Company’s executive officers or directors, nor has he engaged in any related party transaction with the Company that would be required to be disclosed pursuant to Item 404 of Regulation S-K. Mr. Yu is expected to receive compensation for his service on the Board in accordance with the Company’s director compensation program for non-employee directors, which is described in the Company’s Proxy Statement on Schedule 14A filed with the Securities and Exchange Commission on September 13, 2024. On October 10, 2024, the Company issued a press release announcing Mr. Yu’s appointment. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K. Item 9.01 - Financial Statements and Exhibits (d) Exhibits   Exhibit No.    Description 99.1    Carpenter Technology Corporation Press Release dated October 10, 2024 104    Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101) SIGNATURE 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   Senior Vice President and Chief Financial Officer Date: October 10, 2024