(Incorporated in Germany)

We are a holding company known as INNIO Holding GmBH. Our subsidiary, Innio Group, is a manufacturer of reciprocating natural gas engines and power generation systems. Our business runs two segments – equipment and services. Our equipment segment sells engines under its Jenbacher and Waukesha brands. These engines have output ranging from 200 kW to 10 MW; the engines are designed to run on natural gas as well as on hydrogen blends and other alternative fuels. Our services segment supplies parts and performs maintenance for our installed base of equipment under multi-year contracts.

Note: Net income is in U.S. dollars for the 12 months that ended March 31, 2026.

Note: INNIO Holding GmBH – the holding company – is based in Munich, Germany, with its headquarters at Nymphenburger Strasse 5, 80335 Munich, Germany, and telephone: +49.89.89.82.7221 – according to the prospectus.

(Note: INNIO upsized its IPO to 90 million shares – up from 75 million shares in the prospectus – and priced its IPO at $27.00 – the top of its range – to  raise $2.43 billion on Wednesday night, June 3, 2026. Background: INNIO filed its S-1/A on May 26, 2026, and disclosed the terms for its IPO: The principal shareholder, AI Alpine (Luxembourg) – the selling shareholder – is offering 75 million shares at a price range of $24.00 to $27.00 to raise $1.91 billion, if priced at the $25.50 mid-point of its range. Innio, the company, will not receive any proceeds from the sale of stock in the IPO, according to the prospectus. Background: Innio filed its S-1 on May 11, 2026, without disclosing the terms. Estimated proceeds were $100 million, a placeholder figure. Some IPO pros estimated that Innio’s IPO could raise as much as $1 billion to $1.5 billion.)