GHM

• James J. Barber received 8,130,840 votes for and 895,812 withheld; Mauro Gregorio received 8,966,909 votes for and 59,743 withheld; Troy A. Stoner received 8,972,397 votes for and 54,255 withheld.
• Stockholders approved, on an advisory basis, the compensation of named executive officers, with 8,848,831 votes for, 36,156 against, and 141,665 abstentions.
• Stockholders ratified the selection of Deloitte & Touche LLP as independent registered public accounting firm for fiscal year ending March 31, 2027, with 9,835,209 votes for, 218,419 against, and 2,861 abstentions.
• The report was filed under Item 5.07 to disclose the results of these stockholder votes.

5.07 Submission of Matters to a Vote of Security Holders

• First quarter fiscal 2027 net sales were $71.3 million, a 29% increase from $55.5 million in the prior-year period.
• Net income was $3.9 million, or $0.33 per diluted share, compared to $4.6 million, or $0.42 per diluted share, in the prior year.
• Adjusted EBITDA increased 28% to $8.8 million, with adjusted EBITDA margin of 12.3%.
• The company reaffirmed its full-year fiscal 2027 guidance, including net sales of $285 million to $295 million and adjusted EBITDA of $35 million to $40 million.

2.02 Results of Operations and Financial Condition · 7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• On June 18, 2026, Graham Corporation posted slides for its 2026 Investor Day presentation to its website, furnished as Exhibit 99.1.
• Defense revenue grew from $62.2M in FY22 to $147.4M in FY26, with over 80% sole-source content on long-term strategic programs.
• The company highlighted a ~$1.8 billion defense revenue opportunity through 2056 based on Navy nuclear submarine and carrier programs.
• The filing is under Item 7.01 Regulation FD Disclosure, so the slides are furnished but not filed for SEC liability purposes.

7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• Jonathan W. Painter was appointed Chairman of the Board effective June 15, 2026, reassuming the role he held until June 2025.
• Thoren will receive an annual base salary of $150,000 during the transition period and will not participate in short-term or long-term incentive plans.
• Alan E. Smith, former VP and GM of Graham Manufacturing, also transitioned to Strategic Advisor with a $150,000 annual salary through the transition period.
• The Board will return to seven directors after Thoren's retirement, consistent with its prior structure.

5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · 7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• Q4 net income per diluted share was $0.18; full-year net income per diluted share was $1.12.
• Full-year adjusted EBITDA increased 16% to $26.0 million; adjusted net income per diluted share rose 13% to $1.40.
• Record backlog of $532.6 million, up 29% year-over-year, with record full-year orders of $359.4 million (book-to-bill 1.5x).
• Fiscal 2027 guidance: net sales $285-$295 million, adjusted EBITDA $35-$40 million.

2.02 Results of Operations and Financial Condition · 7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• RSUs vest one-third on each of the first three anniversaries of the grant date, while PSUs vest on the third anniversary based on three-year average return on invested capital and cumulative revenue growth metrics.
• Long-Term Incentive Percentages for Fiscal 2027 were set at 50% for Daniel J. Thoren, 200% for Matthew Malone, and 70% for Christopher J. Thome; Alan Smith, who retired from his VP role effective April 1, 2026, will not participate.
• The Fiscal 2027 Annual Executive Cash Bonus Program sets target bonus levels at 50% of base salary for Thoren, 100% for Malone, and 70% for Thome, with payouts ranging from 0% to 200% of target based on performance goals.
• Non-employee directors each received 905 RSUs, valued at $90,000 based on a closing stock price of $99.41 per share on June 1, 2026.

5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · 9.01 Financial Statements and Exhibits

• The purchase price is $83.36 per share, based on the 20-day average closing price, for aggregate gross proceeds of $50 million.
• The transaction is expected to close on or about April 16, 2026, subject to customary closing conditions.
• Proceeds are intended to be used for debt repayment and to fund future organic and inorganic growth opportunities.
• The shares will be sold under an exemption from registration under Section 4(a)(2) of the Securities Act or Rule 506(b) of Regulation D, with a registration rights agreement to be entered at closing.

1.01 Entry into a Material Definitive Agreement · 3.02 Unregistered Sales of Equity Securities · 7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• The Committee also approved an increase to the annual base salary of Vice President – Finance, CFO and Chief Accounting Officer Christopher J. Thome to $400,000.
• For fiscal 2027, Mr. Malone's target LTIP award was increased to 200% of his base salary.
• For fiscal 2027, Mr. Thome's target Cash Bonus Program award was increased to 70% of his base salary.
• The changes were effective as of March 24, 2026.

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