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2025-12-11 17:00 EX - 99.1 2 d236873dex991.htm EX - 99.1 EX - 99.1 Exhibit 99.1 ironSource Announces Record Third Quarter 2021 Results Record Revenue of $ 140 million , 60 % year - over - year growth Record Adjusted EBITDA of $ 51 million , 36 % Adjusted EBITDA margin Dollar - based net expansion rate of 170 % Raised full year 2021 revenue outlook to $ 535- $ 540 million Announced entry into definitive agreements to acquire Tapjoy and Bidalgo to further expand ironSource platform offering TEL AVIV , Israel , November 10 , 2021 – ironSource ( NYSE : IS ) ( “ ironSource " or the " Company " ) , a leading business platform for the App Economy , today announced financial results for the three months ended September 30 , 2021. In addition , the Company provided its initial outlook for the fourth quarter ending December 31 , 2021 and updated guidance for the full year 2021 . " We've had an excellent quarter , with record revenue of $ 140 million , growing 60 % year - over - year , and a dollar - based net expansion rate of 170 % , ” said Tomer Bar Zeev , CEO and co - founder of ironSource . " Our strong execution , despite the industry challenges around IDFA is a tribute to our scale and technology advantage , and this growth is ultimately a testament to the strength of our platform - based approach to the App Economy . Beyond strong organic growth , this approach has also driven our M & A strategy , with the announcement of two strategic acquisitions designed to deepen and expand our platform offering to increase our stickiness with customers . " Third Quarter 2021 Financial Highlights : • Total revenue of $ 140 million , an increase of 60 % year - over - year . GAAP Net Income of $ 19 million . • Adjusted EBITDA1 of $ 51 million , an increase of 70 % year - over - year . Adjusted EBITDA margin of 36 % . • Dollar - based net expansion rate of 170 % , compared to an average of 157 % for the last 10 quarters . 332 customers each contributing more than $ 100,000 of revenue in the trailing 12 months representing 95 % of total revenue for the third quarter ended September 30 , 2021 . • Net cash for the third quarter ended September 30 , 2021 was $ 788 million . 1 Adjusted EBITDA and Adjusted EBITDA margin are financial measures that are not required by , or presented in accordance with , U.S. GAAP . Please see Annex A of this release for a reconciliation of Adjusted EBITDA to net income , the most directly comparable financial measure stated in accordance with GAAP for each of the periods presented . We calculate Adjusted EBITDA margin as Adjusted EBITDA divided by revenue . https://www.sec.gov/Archives/edgar/data/1837430/000119312521325316/d236873dex991.htm 1/14