Auditor 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 September 30, 2025   ESPEY MFG. & ELECTRONICS CORP. (Exact name of registrant as specified in its charter) New York   001-04383   14-1387171 (State or Other Jurisdiction of Incorporation)   (Commission File Number)   (IRS Employer Identification No.)   233 Ballston Avenue , Saratoga Springs , New York 12866 (Address of principal executive offices)   (518) 584-4100 (Registrant’s telephone number, including area code)   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:   ☐ 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 $.33-1/3 par value ESP NYSE American   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 4.01 Changes in Registrant’s Certifying Accountant. On September 30, 2025, the Company engaged WithumSmith+Brown, PC (“Withum”) to audit the Company’s financial statements for the year ending June 30, 2026. Withum is the successor to Freed Maxick, P.C. (“FM”), the Company’s prior auditing firm. On August 1, 2025 Withum issued a press release reporting that FM had joined its practice with Withum.   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.   Date: October 1, 2025   ESPEY MFG. & ELECTRONICS CORP.         By: /s/ Kaitlyn O’Neil     Kaitlyn O’Neil Principal Financial Officer     1