GRAHAM CORP false 0000716314 0000716314 2026-06-08 2026-06-08

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): June 8, 2026

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. ☐

Item 2.02. | Results of Operations and Financial Condition.

On June 8, 2026, Graham Corporation (the “Company”) issued a press release describing its results of operations and financial condition for its fourth quarter and fiscal year ended March 31, 2026 (“Fiscal 2026”). The Company’s earnings press release is furnished to this Current Report on Form 8-K as Exhibit 99.1.

Item 7.01. | Regulation FD Disclosure.

On June 8, 2026, the Company will post on its website at www.grahamcorp.com supplemental data tables, furnished hereto as Exhibit 99.2, regarding historical sales, orders and backlog information.

Additionally, on June 8, 2026, the Company will post slides with respect to its fourth quarter and Fiscal 2026 financial results to the Investor Relations section of its website that will accompany the Company’s earnings conference call and webcast. The slides are furnished as Exhibit 99.3.

The information furnished pursuant to these Items 2.02 and 7.01, including Exhibit 99.1, Exhibit 99.2 and Exhibit 99.3 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities under such section and shall not be deemed to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended, or the Exchange Act.

Item 9.01. | Financial Statements and Exhibits.

| (d) | Exhibits.

Exhibit No. |  | Description
99.1 |  | Press Release dated June 8, 2026 describing the results of operations and financial condition for Graham Corporation’s fourth quarter and fiscal year ended March 31, 2026.
99.2 |  | Supplemental Data Tables.
99.3 |  | Slides with respect to Graham Corporation’s fourth quarter and Fiscal 2026 financial results for the June 8, 2026 Earnings Conference Call and Webcast.
104 |  | Cover Page Interactive Data File (embedded within the Inline XBRL document).

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
Date: June 8, 2026 |  | By: |  | /s/ Christopher J. Thome
|  |  |  | Christopher J. Thome
|  |  |  | Vice President – Finance, Chief Financial Officer and Chief Accounting Officer