Exhibit 99.1

NEWS RELEASE

TRIUMPH REPORTS STRONG FOURTH QUARTER FISCAL 2025 RESULTS

RADNOR, Pa. – May 28, 2025 – Triumph Group, Inc. (NYSE: TGI) ("TRIUMPH" or the “Company”) today reported financial results for its fourth quarter and fiscal 2025, which ended March 31, 2025.

Fourth Quarter Fiscal 2025

Fiscal 2025

“TRIUMPH achieved 21% EBITDAP margins in its twelfth consecutive quarter of year-over-year sales growth," said Dan Crowley, TRIUMPH's chairman, president and chief executive officer. "Commercial and military aftermarket sales from our IP-based business grew by more than 7% and OEM sales grew by 10% on ramping demand. We achieved our fiscal 2025 goal of being cash flow positive and had significant free cash flow in the quarter through strong operational performance across all our businesses."

Mr. Crowley continued, “Our strategy to focus on IP-based OEM and aftermarket business, along with efforts to turnaround our Interiors business, positions TRIUMPH well for fiscal 2026 and beyond. Our improving year-over-year results are a testament to our exceptional team and our partnerships with our customers and distribution partners.”

Fourth Quarter and Full Year Fiscal 2025 Overview

Commercial OEM sales decreased $7.9 million, or 1.5%, primarily due to decreased sales volume on the Boeing 737 program and other commercial fixed wing platforms, which were partially offset by increased sales on the Boeing 787 program, increased business jets volume, and a favorable settlement resulting in near-term improved pricing in Interiors across multiple programs for fiscal 2025 deliveries.

Military OEM sales increased $11.9 million, or 4.6%, primarily due to increased sales on the F/A-18, AH-64, CH-47, UH-60, and CH53 platforms, which were partially offset by decreased sales on the E-2C and F-15 platforms.

Commercial Aftermarket sales increased $41.3 million, or 25.2%, primarily due to increased spares sales on Boeing commercial platforms as well as a spare parts intellectual property transaction of approximately $4.6 million in the current year, partially offset by decreased spares volumes on the Bell 429, Cessna 525, and the Global G500 platforms as well as a prior year intellectual property transaction of approximately $4.2 million.

Military aftermarket sales increased $27.6 million, or 15.0%, primarily due to increased spares sales across several platforms including the C-130, E-2C, CH-47, and CH-53 and a military spare parts intellectual property transaction of approximately $5.0 million. Repair and overhaul sales were up modestly primarily due to increased volumes on CH-47, AH-64, and F-15.

Non-aviation sales decreased approximately $3.3 million, or 6.7%, primarily driven by decreased sales of non-aircraft military components.

TRIUMPH's results included the following:

The number of shares used in computing earnings per share for the fourth quarter of 2025 was 78.2 million.

Backlog, which represents the next 24 months of actual purchase orders with firm delivery dates or contract requirements, was $1.9 billion.

Merger Agreement with Affiliates of Warburg Pincus and Berkshire Partners

On February 3, 2025, TRIUMPH announced that it had entered into a definitive agreement under which affiliates of growth-focused private equity firms Warburg Pincus LLC and Berkshire Partners LLC will acquire TRIUMPH through a newly formed entity for a total enterprise value of approximately $3 billion. The transaction is expected to close before or during the second half of calendar year 2025 and is subject to customary closing conditions, including receipt of required regulatory approvals.

In light of the pending transaction, TRIUMPH has suspended quarterly earnings conference calls and webcasts. In addition, consistent with customary practice during the pendency of such transactions, TRIUMPH will not provide financial guidance for fiscal 2026.

About TRIUMPH

Founded in 1993 and headquartered in Radnor, Pennsylvania, TRIUMPH designs, develops, manufactures, repairs and provides spare parts across a broad portfolio of aerospace and defense systems and components. The Company serves the global aviation industry, including original equipment manufacturers and the full spectrum of military and commercial aircraft operators.

More information about TRIUMPH can be found on the Company’s website at www.triumphgroup.com.

Forward Looking Statements

Statements in this release which are not historical facts are forward-looking statements under the provisions of the Private Securities Litigation Reform Act of 1995, including statements of expectations of or assumptions about guidance, financial and operational performance, revenues, earnings per share, cash flow or use, cost savings and operational efficiencies. All forward-looking statements involve risks and uncertainties which could affect the Company’s actual results and could cause its actual results to differ materially from those expressed in any forward-looking statements made by, or on behalf of, the Company. Factors that could cause actual results to differ materially are uncertainties relating to the occurrence of any event, change or other circumstances that could give rise to the termination of the Merger Agreement, inability to complete the proposed transaction because, among other reasons, conditions to the closing of the proposed transaction may not be satisfied or waived, uncertainty as to the timing of completion of the proposed transaction, restrictions or prohibitions under certain covenants in the merger agreement during the pendency of the proposed transaction that may impact the Company’s ability to pursue certain business opportunities, potential adverse effects or changes to relationships with customers, employees, suppliers or other parties resulting from the announcement or completion of the transaction, significant costs associated with the proposed transaction, potential litigation relating to the proposed transaction that could be instituted against the Company or its directors and officers, including the effects of any outcomes related thereto and possible disruptions from the proposed transaction that could harm the Company’s business, including current plans and operations. Further information regarding the important factors that could cause actual results to differ from projected results can be found in Triumph Group’s reports filed with the SEC, including our Annual Report on Form 10-K for the fiscal year ended March 31, 2024.

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Non-GAAP Financial Measure Disclosures

We prepare and publicly release annual audited and quarterly unaudited financial statements prepared in accordance with U.S. GAAP. In accordance with Securities and Exchange Commission (the "SEC") rules, we also disclose and discuss certain non-GAAP financial measures in our public filings and earning releases. Currently, the non-GAAP financial measures that we disclose are Adjusted EBITDA, which is our income (loss) from continuing operations before interest and gains or losses on debt modification and extinguishment, income taxes, amortization of acquired contract liabilities, costs incurred pertaining to shareholder cooperation agreements, consideration payable to customer related to divestitures, legal contingency losses (including legal judgments and settlements), gains/loss on divestitures, merger transaction costs, gains/losses on warrant remeasurements and warrant-related transaction costs, share-based compensation expense, depreciation and amortization (including impairment of long-lived assets), other non-recurring impairments, and the effects of certain pension charges such as curtailments, settlements, withdrawals, and other early retirement incentives; and Adjusted EBITDAP, which is Adjusted EBITDA, before pension expense or benefit (excluding pension charges already adjusted in Adjusted EBITDA). We disclose Adjusted EBITDA on a consolidated and Adjusted EBITDAP on a consolidated and a reportable segment basis in our earnings releases, investor conference calls and filings with the SEC. The non-GAAP financial measures that we use may not be comparable to similarly titled measures reported by other companies. Also, in the future, we may disclose different non-GAAP financial measures in order to help our investors more meaningfully evaluate and compare our future results of operations with our previously reported results of operations.

We view Adjusted EBITDA and Adjusted EBITDAP as operating performance measures and, as such, we believe that the U.S. GAAP financial measure most directly comparable to such measures is income (loss) from continuing operations. In calculating Adjusted EBITDA and Adjusted EBITDAP, we exclude from income (loss) from continuing operations the financial items that we believe should be separately identified to provide additional analysis of the financial components of the day-to-day operation of our continuing business. We have outlined below the type and scope of these exclusions and the material limitations on the use of these non-GAAP financial measures as a result of these exclusions. Adjusted EBITDA and Adjusted EBITDAP are not measurements of financial performance under U.S. GAAP and should not be considered as a measure of liquidity, as an alternative to income (loss) from continuing operations, or as an indicator of any other measure of performance derived in accordance with U.S. GAAP. Investors and potential investors in our securities should not rely on Adjusted EBITDA or Adjusted EBITDAP as a substitute for any U.S. GAAP financial measure, including income (loss) from continuing operations. In addition, we urge investors and potential investors in our securities to carefully review the reconciliation of Adjusted EBITDA and Adjusted EBITDAP to income (loss) from continuing operations set forth below, in our earnings releases, and in other filings with the SEC and to carefully review the U.S. GAAP financial information included as part of our Quarterly Reports on Form 10-Q and our Annual Reports on Form 10-K that are filed with the SEC, as well as our quarterly earnings releases, and compare the U.S. GAAP financial information with our Adjusted EBITDA and Adjusted EBITDAP.

Adjusted EBITDA and Adjusted EBITDAP are used by management to internally measure our operating and management performance and by investors as a supplemental financial measure to evaluate the performance of our business that, when viewed with our U.S. GAAP results and the accompanying reconciliation, we believe provides additional information that is useful to gain an understanding of the factors and trends affecting our business. We have spent more than 20 years expanding our product and service capabilities, partially through acquisitions of complementary businesses. Due to the expansion of our operations, which included acquisitions, our income (loss) from continuing operations has included significant charges for depreciation and amortization. Adjusted EBITDA and Adjusted EBITDAP exclude these charges and provide meaningful information about the operating performance of our business, apart from charges for depreciation and amortization. We believe the disclosure of Adjusted EBITDA and Adjusted EBITDAP helps investors meaningfully evaluate and compare our performance from quarter to quarter and from year to year. We also believe Adjusted EBITDA and Adjusted EBITDAP are measures of our ongoing operating performance because the isolation of noncash charges, such as depreciation and amortization, and nonoperating items, such as interest, income taxes, pension and other postretirement benefits, provides additional information about our cost structure and, over time, helps track our operating progress. In addition, investors, securities analysts, and others have regularly relied on Adjusted EBITDA and Adjusted EBITDAP to provide financial measures by which to compare our operating performance against that of other companies in our industry.

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Set forth below are descriptions of the financial items that have been excluded from our income (loss) from continuing operations) to calculate Adjusted EBITDA and Adjusted EBITDAP and the material limitations associated with using these non-GAAP financial measures as compared with income (loss) from continuing operations:

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Management compensates for the above-described limitations of using non-GAAP measures by using a non-GAAP measure only to supplement our GAAP results and to provide additional information that is useful to gain an understanding of the factors and trends affecting our business.

The following table shows our Adjusted EBITDA and Adjusted EBITDAP reconciled to our income (loss) from continuing operations for the indicated periods (in thousands):

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Non-GAAP Financial Measure Disclosures (continued)

Adjusted income from continuing operations, before income taxes, adjusted income from continuing operations and adjusted income from continuing operations per diluted share, before non-recurring costs have been provided for consistency and comparability. These measures should not be considered in isolation or as alternatives to income from continuing operations before income taxes, income from continuing operations and income from continuing operations per diluted share presented in accordance with GAAP. The following tables reconcile income from continuing operations before income taxes, income from continuing operations, and income from continuing operations per diluted share, before non-recurring costs.

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Non-GAAP Financial Measure Disclosures (continued)

Adjusted Operating Income is defined as GAAP Operating Income, less expenses/gains associated with the Company's transformation, such as restructuring expenses, gains/losses on divestitures, impairments of goodwill and other assets. Management believes that this is useful in evaluating operating performance, but this measure should not be used in isolation. The following table reconciles our Operating income to Adjusted Operating income as noted above.

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Non-GAAP Financial Measure Disclosures (continued)

Cash provided by operations, is provided for consistency and comparability. We also use free cash flow as a key factor in planning for and consideration of strategic acquisitions and the repayment of debt. This measure should not be considered in isolation, as a measure of residual cash flow available for discretionary purposes, or as an alternative to operating results presented in accordance with GAAP. The following table reconciles cash used in operations to free cash use.