GRAHAM CORP — Board/Management Information 2025

Nov 10, 2025

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K/A

(Amendment No. 1)

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 28, 2025

Graham Corporation

(Exact name of Registrant as specified in its charter)

Delaware	001-08462	16-1194720
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

20 Florence Avenue , Batavia , New York	14020
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (585) 343-2216

N/A

(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(s)	Name of each exchange on which registered
Common Stock, par value $0.10 per share	GHM	NYSE

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. ☐

EXPLANATORY NOTE

On September 3, 2025, Graham Corporation (the “Company”) filed a Current Report on Form 8-K (the “Original Report”) to report the appointment of Mauro Gregorio to the Board of Directors of the Company (the “Board”). The Company is hereby filing this Current Report on Form 8-K/A (the “Amendment”) to amend Item 5.02 of the Original Report to report Mr. Gregorio’s appointment to certain committees of the Board.

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

The Company is filing this Amendment to the Original Report to disclose that, on November 4, 2025, the Board appointed Mr. Gregorio to serve as a member of the Compensation Committee and the Nominating and Corporate Governance Committee of the Board.

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.

Graham Corporation — /s/ Christopher J. Thome
Christopher J. Thome
Vice President – Finance, Chief Financial Officer and Chief Accounting Officer