Results of Operations · 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):  August 18, 2025 NORDSON CORPORATION (Exact Name of Registrant as Specified in its Charter) Ohio 000-07977 34-0590250 (State or Other Jurisdiction of Incorporation) (Commission File Number) (I.R.S. Employer Identification Number) 28601 Clemens Road Westlake ,  Ohio   44145 (Address of Principal Executive Offices, including Zip Code) Registrant’s Telephone Number, including Area Code:  440 - 892-1580 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. below): ☐ 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 Shares, without par value NDSN 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(§ 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 August 20, 2025 , Nordson Corporation issued a press release relating to its results of operations for the third quarter of fiscal 2025. A copy is attached as Exhibit 99.1. Item 7.01.    Regulation FD Disclosure. N ordson Corporation will provide additional commentary on third quarter fiscal 2025 results and outlook during a webcast on Thursday, August 21, 2025 at 8:30 a.m. eastern time, which can be accessed at https://investors.nordson.com. For persons unable to listen to the live broadcast, a replay will be available after the event. As provided in General Instruction B.2 of Form 8-K, the information contained in Items 2.02 and 7.01 of this Form 8-K shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall any such information be deemed to be incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing . Item 8.01    Other Events. On August 18, 2025, the Board of Directors of Nordson Corporation (the “Company”) authorized the repurchase of an additional $500 million of the Company’s outstanding common shares. The increased share repurchase authorization, when added to the approximate $293 million remaining from previously approved Board share repurchase authorizations, provides the Company with a total share repurchase authorization of approximately $793 million. Repurchases may be made from time to time in the open market, in privately negotiated transactions, or by other means, including through Rule 10b5-1 trading plans, in accordance with applicable securities laws and other legal requirements. The timing, manner, price, and amount of any repurchases will be determined at the Company’s discretion and will depend on a variety of factors, including business, economic and market conditions, corporate and regulatory requirements, prevailing stock prices, and other considerations. The repurchase program does not obligate the Company to acquire any particular amount of common stock and may be suspended or discontinued at any time. Item 9.01    Financial Statements and Exhibits. (d) Exhibits. 99.1 Press release of Nordson Corporation dated August 20, 2025 . 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. NORDSON CORPORATION Date: August 20, 2025 By: /s/ Joseph Rutledge Joseph Rutledge Chief Accounting Officer