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© Accelleron Switzerland Ltd. All rights reserved. Half-year results 2026 Accelleron delivers strong results and accelerates investments for future growth Baden, August 27, 2026 Daniel Bischofberger, CEO Adrian Grossenbacher, CFO
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© Accelleron Switzerland Ltd Important notices 2 This presentation has been prepared for information purposes only and may in particular not be used in making any investment decision. Copies of this presentation may not be sent to countries, or distributed in or sent from countries, in which this is barred or prohibited by law. This presentation includes forward-looking information and statements including statements concerning the outlook for our businesses. These statements are based on current expectations, estimates and projections about the factors that may affect our future performance, including global economic conditions, and the economic conditions of the regions and industries that are major markets for Accelleron Industries Ltd (the "Company"). These expectations, estimates and projections are generally identifiable by statements containing words such as “expects,” “believes,” “estimates,” “targets,” “plans,” “outlook,” “on track,” “framework”, “guidance”, “forecast” or similar expressions. There are numerous risks and uncertainties, many of which are beyond the control of the Company, that could cause our actual results to differ materially from the forward-looking information and statements made in this presentation and which could affect our ability to achieve any or all of our stated targets. The important factors that could cause such differences include, among others: − business risks associated with the volatile global economic environment and political conditions − costs associated with compliance activities − market acceptance of new products and services − changes in governmental regulations and currency exchange rates. Although the Company believes that its expectations reflected in any such forward-looking statement are based upon reasonable assumptions, neither of them can give any assurance that those expectations will be achieved. Certain figures in this presentation are subject to rounding. Accordingly, figures shown for the same category presented in different charts or tables may vary slightly and figures shown as totals in certain charts or tables may not be an arithmetic aggregation of the figures that precede them. Certain financial information relating to the Company and presented herein has been prepared on a combined carve-out basis from historical consolidated financial statements of the Company's former parent group and therefore may not necessarily be representative of past results. Certain financial data included in this presentation consists of non-U.S. GAAP financial measures. Definitions of these non-U.S. GAAP financial measures can be found can be found on https://accelleron.com/investors/performance-measures. These non-U.S. GAAP financial measures may not be comparable to similarly titled measures presented by other companies, nor should they be construed as an alternative to other financial measures determined in accordance with U.S. GAAP. You are cautioned not to place undue reliance on any non-U.S. GAAP financial measures and ratios included herein. In addition, certain of the financial information contained herein has not been audited, confirmed or otherwise covered by a report by independent accountants and, as such, actual data could vary, possibly significantly, from the data set forth herein. Certain industry and market data contained in this presentation is based on the Company‘s analysis of multiple third-party sources, including industry publications, studies and surveys. Third-party industry publications, studies and surveys generally state that the data contained therein has been obtained from sources believed to be reliable, but that there is no guarantee of the accuracy or completeness of such data. While the Company believes that each of these publications, studies and surveys has been prepared by a reputable source, the Company has not independently verified the data contained therein. In addition, certain of the industry and market data contained in this presentation comes from the Company‘s own internal research and estimates based on the knowledge and experience of the Company‘s management in the market in which the Company operates (including with reference to and derived or extrapolated from such aforementioned third-party sources). While the Company believes that such research and estimates are reasonable and reliable, they, and their underlying methodology and assumptions, have not been verified by any independent source for accuracy or completeness and are subject to change without notice. To the extent that the Information presented in this presentation has been sourced from third parties, such Information has been accurately reproduced and, as far as we are aware and able to ascertain from the information published by such third parties, no facts have been omitted that would render the reproduced information inaccurate or misleading. Market studies and analyses are, however, inherently predictive and subject to uncertainty and not necessarily reflective of actual market conditions, are frequently based on information and assumptions that may not be accurate or technically correct, and their methodology may be forward-looking and speculative. In particular, market studies and analyses are based on market research, which itself is based on sampling and subjective judgments by both the researchers and the respondents, including judgments about what types of products and transactions should be included in the relevant market. This Presentation does not constitute or form part of, and should not be construed as, an offer or invitation or inducement to subscribe for or otherwise acquire, any securities of the Company or the Group, nor should it or any part of it form the basis of, or be relied on in connection with, any contract to purchase or subscribe for any securities of the Group, nor shall it or any part of it form the basis of, or be relied on in connection with, any contract or commitment whatsoever. This Presentation is not an offer to sell or a solicitation of offers to purchase or subscribe for shares or any other securities of the Company or the Group. This document is not a prospectus within the meaning of the Swiss Financial Services Act (FinSA) or a prospectus under any other applicable laws. This Presentation constitutes advertising within the meaning of article 68 of the FinSA. Potential investors are advised to consult their bank or financial adviser before making any investment decision. This Presentation does not constitute an offer to sell, or a solicitation of an offer to purchase, any securities in the United States. Securities may not be offered or sold in the United States absent registration or an exemption from registration under the U.S. Securities Act of 1933, as amended. Neither the Company nor any other member of the Group has registered or intends to register any securities under the Securities Act or the securities laws of any state or other jurisdiction of the United States. This Presentation does not constitute investment, legal, accounting, regulatory, taxation or other advice. Half-year results 2026 investor and analyst presentation (August 27, 2026) 2026
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3 01 Agenda Half-year results 2026 investor and analyst presentation (August 27, 2026)
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© Accelleron Switzerland Ltd Half-year results 2026 investor and media webcast Agenda Time (CEST) Topic Presenter 09:30-10:30 01 Agenda 02 Key highlights H1 2026 Daniel Bischofberger (CEO) Adrian Grossenbacher (CFO)03 Financial review H1 2026 04 Market update and outlook 2026 Daniel Bischofberger (CEO) Q&A 4 Half-year results 2026 investor and analyst presentation (August 27, 2026) 2026
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5 02 Key highlights H1 2026 Half-year results 2026 investor and analyst presentation (August 27, 2026)
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© Accelleron Switzerland Ltd H1 2026: Accelleron performed strongly 6 Marine new builds and data centers continue to underpin growth • Revenues reached USD 737 million, +21.3% YoY (+17.2% organic) • Op. EBITA increased to USD 190 million (+22.5%) • Op. EBITA margin at 25.7% (+0.2 ppts) • Net income increased to USD 151 million (+31.5%) • Free Cash flow conversion at 58% (70% in H1 2025) Half-year results 2026 investor and analyst presentation (August 27, 2026) New picture 2026 Photo: Amelie Clements
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© Accelleron Switzerland Ltd Data center & gas compression sectors grew strongly in H1 2026 Half-year results 2026 investor and analyst presentation (August 27, 2026)7 Slightly below 9% of revenues were data center-related Main growth drivers were: - Prime power demand from data centers - Remanufacturing activity in U.S. gas compression - Marine newbuild demand - Healthy service performance across Marine and Energy Product business grew more (~30%) than the service business (~15%) 2026
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© Accelleron Switzerland Ltd Highlights in H1 2026 Half-year results 2026 investor and analyst presentation (August 27, 2026)8 Prime power gains momentum and ACCX300-L enters the market Data center power • Prime power: installed power more than doubled to ~5 GW (H1 2025: <2 GW) • Backup power: stable at ~3 GW City of Denton, Texas • Long-term service agreement for fast-start power generation • Service model tailored to peaking operations A100-L/A200-L • 10,000 orders surpassed • Installed power of 110 GW ACCX300-L • New low-speed turbocharger platform • Improved serviceability and operational flexibility • First orders secured for 50+ vessels 01 02 03 04 2026
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9 03 Financial review H1 2026 Half-year results 2026 investor and analyst presentation (August 27, 2026)
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© Accelleron Switzerland Ltd 608 737 2025 H1 2026 H1 Group performance 10 Continued revenue growth with slight margin uplift Highlights Revenues • Marine new builds and data centers continued to underpin growth • Organic revenue growth largely driven by volume and, to a lesser extent, by direct/ indirect pricing • Revenue growth 21.3% (17.2% organic) • Data center related-revenues increased to slightly below 9% of total revenues Operational EBITA • Attractive margin delivered, up by 20 bps • Strong growth of new business and additional costs along the value chain were more than offset by structural leverage, as revenue growth continued to outpace SG&A growth Revenues and growth 21.3%% YoY growth Op. EBITA & margin USD m Margin USD m 25.5% 25.7% 155 190 2025 H1 2026 H1 Half-year results 2026 investor and analyst presentation (August 27, 2026) Note: Numbers might not add up due to rounding
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© Accelleron Switzerland Ltd 15.2% 116 135 2025 H1 2026 H1 11 Revenues and growth Note: Numbers might not add up due to rounding Op. EBITA & margin USD m Medium & Low Speed performance Solid growth and margin delivered % YoY growth Margin 459 529 2025 H1 2026 H1 Half-year results 2026 investor and analyst presentation (August 27, 2026) USD m Highlights Revenues • Strong merchant marine new-build activity • Service growth driven by fuel efficiency upgrades, full-cover service agreements, and continued high utilization in merchant marine and cruise segments • Increased service activity for medium-speed energy applications (power plants) • Revenue growth 15.2% (11.3% organic) Operational EBITA • Operational EBITA margin increased by 20 bps • Growth in the lower-margin product business was more than offset by structural leverage 25.3% 25.5%
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© Accelleron Switzerland Ltd 39 55 2025 H1 2026 H1 149 209 2025 H1 2026 H1 High Speed performance 12 Revenues and growth Op. EBITA & margin USD mUSD m Continued strong revenue growth at attractive margin Margin40.0%% YoY growth Half-year results 2026 investor and analyst presentation (August 27, 2026) Note: Numbers might not add up due to rounding Highlights Revenues • Revenues in prime power applications (gas) for U.S. data centers continued to grow, supported by capacity expansion at OEMs • Revenue growth in backup power (diesel) constrained by OEM capacity allocation • In gas compression, demand in North America remained strong, supported by investments in pipelines due to increasing domestic and export demand for natural gas • Revenue growth 40.0% (35.5% organic) Operational EBITA • Operational EBITA margin increased by 30 bps • Additional costs along the value chain were more than offset by strong structural leverage 25.9% 26.2%
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© Accelleron Switzerland Ltd Op. EBITA to net income bridge Half-year results 2026 investor and analyst presentation (August 27, 2026)13 Net income increased by 31.5% to USD 151 million 190 (1) (2) 187 (0) (36) 151 Operational EBITA One-off and non-operational expenses Acquisition- related amortization Income from operations Finance/Interest expense Taxes Net income USD m Key observations One-off and non-operational expenses • Temporary unrealized FX gain of USD 1.7 million resulted from USD strengthening against CHF and associated timing differences between payables and receivables • Non-operational items, pension costs and M&A activities totaled USD 3.0 million Amortization • USD 1.7 million amortization linked to OMT, OMC2, and TNM Taxes • 19.1% income tax rate vs. 19.6% in 2025, largely due to the Company’s profit mix of earnings in high-tax jurisdictions Note: Numbers might not add up due to rounding
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© Accelleron Switzerland Ltd Free cash flow 14 Cash conversion at solid 58% Note: Non-U.S. GAAP financial metric, as defined within the Accelleron Performance measures (accelleron.com) on the Accelleron website 1 For a detailed breakdown, please refer to the “Statements of cash flows” Half-year results 2026 investor and analyst presentation (August 27, 2026) Free cash flow and conversion over net income USD m H1 2025 H1 2026 Net income 115 151 Depreciation & amortization (D&A) 20 20 Change in net working capital and other1 (29) (52) Net cash provided by operating activities 106 119 Capital expenditure (net) (22) (31) Other1 (3) - Net cash (used in) investing activities (25) (31) Total free cash flow 81 88 % conversion over net income 70% 58% Note: Numbers might not add up due to rounding Highlights • Solid cash conversion in H1 2026 • Change in NWC and other mainly due to: – Largely volume-driven receivables increase – Trade payables and inventory growing in line with volume – Normalization of income tax payables vs. H1 2025 • Capital expenditure increased by more than 40%, reflecting continued investments in: – Manufacturing and R&D infrastructure upgrades – Equipment replacements – Additional production capacity
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15 04 Market update and outlook 2026 Half-year results 2026 investor and analyst presentation (August 27, 2026)
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© Accelleron Switzerland Ltd Marine markets remain favorable In merchant marine, ship orders continue to outpace deliveries even as Chinese shipyards are investing in additional capacity • Ordering activity remains strong across vessel segments, led by tankers, supported by gas carriers, containerships and bulk carriers • 2027/28 deliveries in tonnage terms are expected to reach record levels, supported by ongoing capacity expansion in China1 • Orderbook Forward Cover has increased in recent years and now stands at over 4 years, reflecting a strong backlog relative to current shipyard output and implying long-term yard utilization • Annual deliveries remain reasonable relative to the size of the global active fleet, implying a fleet renewal period of 20–25 years despite the recent investments in additional shipyard capacity in China Half-year results 2026 investor and analyst presentation (August 27, 2026)16 1 Source: Clarkson 0 1 2 3 4 5 6 0 50 100 150 200 250 2005 2007 2009 2011 2013 2015 2017 2019 2021 2023 2025 Orderbook (in mCGT) and Orderbook Forward Cover (in years)1 World Orderbook Orderbook Forward Cover YearsmCGT 3% 4% 5% 6% 7% 8% 9% 2005 2007 2009 2011 2013 2015 2017 2019 2021 2023 2025 Total deliveries vs. World fleet (in %)1 2026
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© Accelleron Switzerland Ltd Energy momentum remains strong Half-year results 2026 investor and analyst presentation (August 27, 2026)17 Sustained demand for prime power and gas compression • Power grid constraints and gas availability are driving demand for gas-fired prime power applications at U.S. data centers • Backup power remained flat year-over-year as OEM capacity was allocated to prime power • Increasing manufacturing capacity and order backlogs at engine OEMs support future growth • The growing prime power installed base is expected to support U.S. service growth in 3–5 years • Growing domestic and export demand for U.S. natural gas supports investment in gas infrastructure • Pipeline expansion and rising throughput requirements continue to drive growth in gas compression Power Gas compression 2026
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© Accelleron Switzerland Ltd Outlook 2026 18 Container Tanker/bulker Cruise & ferries Specialized High-speed gas power Backup powerGas compression Medium-speed power Half-year results 2026 investor and analyst presentation (August 27, 2026) 2026 Marine and energy industries (status March 12, 2026) Energy (>40% of revenues) Marine (>50% of revenues)
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© Accelleron Switzerland Ltd Outlook 2026 19 Container Tanker/bulker Cruise & ferries Specialized High-speed gas power Backup powerGas compression Medium-speed power Half-year results 2026 investor and analyst presentation (August 27, 2026) 2026 Marine and energy industries (status August 27, 2026) Energy (>40% of revenues) Marine (>50% of revenues) Improvement versus March 2026 guidance Weakening versus March 2026 guidance
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© Accelleron Switzerland Ltd Scaling capacity while maintaining flexibility Half-year results 2026 investor and analyst presentation (August 27, 2026)20 Higher CAPEX to reflect new business volume and support growth outlook • Overall CAPEX expected to reach around 5-6% of revenues in 2026 • Higher CAPEX reflects investments to strengthen operational resilience, expand capacity, and support future growth • 2026–2028 investments allocated to: • manufacturing and R&D upgrades in Switzerland (~20%) • equipment replacement (~50%) • additional production capacity (~30%) • Almost two third of investments are in Switzerland and one third in China, Italy, and the service network • Balanced “keep-invest-buy” approach provides flexibility to adapt capacity to evolving long-term demand scenarios 2026
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14-17 % Organic revenue growth 25-26 % Operational EBITA margin Financial guidance Raised guidance reflects the structural growth drivers in our markets – particularly in energy
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© Accelleron Switzerland LtdHalf-year results 2026 investor and analyst presentation (August 27, 2026)22 Q&A We are now happy to answer your questions 2026
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23 Half-year results 2026 investor and analyst presentation (August 27, 2026) For more, contact: Investor Relations Michael Daiber VP Strategy and Investor Relations investors@accelleron-industries.com Media Relations Nicole Wesch VP Communications and Marketing media@accelleron-industries.com Accelleron Switzerland Ltd Bruggerstrasse 71A CH-5400 Baden accelleron.com