Results of Operations

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: January 29, 2026 ___________________________________ CARPENTER TECHNOLOGY CORPORATION (Exact name of registrant as specified in its charter) ___________________________________ Delaware (State or other jurisdiction of incorporation or organization) 1-5828 (Commission File Number) 23-0458500 (I.R.S. Employer Identification Number) 1735 Market Street Philadelphia , PA 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 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 2.02 - Results of Operations and Financial Condition. On January 29, 2026, Carpenter Technology Corporation issued a press release announcing fiscal 2026 second quarter results for the period ended December 31, 2025. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K and shall not be deemed to be “filed” for any purpose. Item 9.01 - Financial Statements and Exhibits (d): Exhibits: Exhibit No. Description 99.1 Press Release regarding earnings, dated January 29 , 20 26 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 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 Name: Timothy Lain Title: Senior Vice President and Chief Financial Officer Date: January 29, 2026