Page 1

criteol . CRITEO REPORTS STRONG FIRST QUARTER 2021 FINANCIAL RESULTS Q1 Revenue ex - TAC and Adjusted EBITDA Above Guidance Criteo Announces Investor Day for June 3 , 2021 Exhibit 99.1 NEW YORK - May 5 , 2021 - Criteo S.A. ( NASDAQ : CRTO ) , the global technology company powering the world's marketers with trusted and impactful advertising , today announced financial results for the first quarter ended March 31 , 2021 that exceeded the Company's quarterly guidance . First Quarter 2021 Financial Highlights : The following table summarizes our consolidated financial results for the three months ended March 31 , 2021 and 2020 : 2021 Three Months Ended March 31 , 2020 ( in millions , except EPS data ) YoY Change GAAP Results Revenue Net Income Diluted EPS Cash from operating activities Net cash position SSSSS $ 541 $ 23 $ $ 0.35 $ 77 $ 520 SASSASS $ 503 7 % 16 43 % $ 0.25 40 % $ 57 36 % $ 437 19 % Non - GAAP Results¹ Revenue ex - TAC FA $ 213 SA $ 206 4 % Revenue ex - TAC margin 39 % 41 % ( 2 ) % Adjusted EBITDA Adjusted diluted EPS Free Cash Flow ( FCF ) SASASA $ 76 $ 0.67 $ 64 SASSA $ 59 28 % $ 0.52 29 % $ 45 41 % FCF / Adjusted EBITDA 84 % 76 % 8 % Megan Clarken , Chief Executive Officer of Criteo , said , " Our commitments to deliver measurable results for our customers , our growth investments and our consistent focus on execution and productivity enabled us to deliver strong top line and margin . " Q1 2021 Operating Highlights • • • New solutions grew 60 % year - over - year at constant currency² to 21 % of total Revenue ex - TAC . Retail Media revenue grew 69 % year - over - year at constant currency² and Retail Media Revenue ex - TAC grew 122 % at constant currency² . Same - client revenue³ for Retail Media grew 61 % and same - client Revenue ex - TAC³ for Retail Media increased 89 % year - over - year . Criteo launched its contextual advertising solution , a first - of - its - kind product that connects first - party commerce data with real - time contextual signals , paving the way for marketers to continue to drive and measure incremental revenue in a post- cookie world . Same - client revenue³ increased 8 % year - over - year , accelerating vs. Q4 2020 , and same - client Revenue ex - TAC³ increased 3 % year - over - year at constant currency² . We added over 120 net new live clients in Q1 2021 and closed the quarter with 20,626 clients4 . 1 Revenue excluding Traffic Acquisition Costs , or Revenue ex - TAC , Revenue ex - TAC margin , Adjusted EBITDA , Adjusted EBITDA at constant currency , Adjusted EBITDA margin , Adjusted diluted EPS , Free Cash Flow and growth at constant currency are not measures calculated in accordance with U.S. GAAP . ²Constant currency measures exclude the impact of foreign currency fluctuations and is computed by applying the 2020 average exchange rates for the relevant period to 2021 figures . ³Same - client revenue or Revenue ex - TAC is the revenue or Revenue ex - TAC generated by clients that were live with us in a given quarter and still live with us the same quarter in the following year . 4Our client metric , which is a lagging indicator counting all clients that have been live over the preceding 12 months , in Q1 2021 reflected the annualized impact of client churn that peaked in Q2 2020 when COVID started to impact the global economy . 1