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 (Date of earliest event reported) July 15, 2025     PARK-OHIO HOLDINGS CORP. (Exact name of registrant as specified in its charter)       Ohio   000-03134   34-1867219 (State or other jurisdiction of incorporation)   (Commission File Number)   (IRS Employer Identification No.)   6065 Parkland Boulevard, Cleveland, Ohio   44124     (Address of principal executive offices)   (Zip Code)   Registrant’s telephone number, including area code: ( 440 ) 947-2000 Not applicable (Former name or former address, if changed since last report.)     PARK-OHIO INDUSTRIES, INC. (Exact name of registrant as specified in its charter)       Ohio   333-43005-01   34-6520107 (State or other jurisdiction of incorporation)   (Commission File Number)   (IRS Employer Identification No.)   6065 Parkland Boulevard, Cleveland, Ohio   44124     (Address of principal executive offices)   (Zip Code)   Registrant’s telephone number, including area code: ( 440 ) 947-2000 Not applicable (Former name or former address, if changed since last report.)     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 (see General Instruction A.2.):   ☐ 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(s)   Name of each exchange on which registered Common Stock, Par Value $1.00 Per Share   PKOH   The NASDAQ Stock Market LLC Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934. 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 July 15, 2025, Park-Ohio Holdings Corp. (the “Company”) issued a press release announcing preliminary financial results for the quarter ended June 30, 2025. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.   Item 9.01 Financial Statements and Exhibits. (d) Exhibits   Exhibit Number    Description  99.1    Park-Ohio Holdings Corp. Press Release, dated July 15, 2025 104    Cover Page Interactive Data File (embedded within the Inline XBRL document)   2 SIGNATURES 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.         Park-Ohio Holdings Corp.       (Registrant) Dated: July 16, 2025       /s/ Patrick W. Fogarty       Patrick W. Fogarty Vice President and Chief Financial Officer       Park-Ohio Industries, Inc.       (Registrant) Dated: July 16, 2025       /s/ Patrick W. Fogarty       Patrick W. Fogarty       Vice President and Chief Financial Officer   3