Readers are cautioned that the supplemental non-IFRS information presented in this press release is subject to inherent limitations. It is not based on any comprehensive set of accounting rules or principles and should not be considered as a substitute for IFRS measurements. Also, the Company's supplemental non-IFRS financial information may not be comparable to the reasons for presenting non-IFRS financial information, are set forth in the Company's 2017 Document de Référence filed with the AMF on March 21, 2018. In the tables accompanying this press release the Company sets forth its supplemental non-IFRS figures for revenue, operating income, operating margin, net income and diluted earnings per share, which exclude the effect of adjusting the carrying value of acquired companies' deferred revenue, share-based compensation expense and related social charges, the amortization of other, net, and the income tax effect of the non-IFRS adjustments and certain one-time tax effects. The tables also set forth the most comparableIFRS financial measure and reconciliations of this information with non-IFRS information. IFRS 15 & IAS 18 The Company has adopted IFRS 15 as of January 1, 2018. The appendix of this presentation includes 2018 fourth quarter and twelve months financial results under IFRS 15 as well as under the prior IAS 18 standard and includes a summary explanation of the major differences for the Company. In addition, this presentation also includes financial information on a non-IFRS basis (both IFRS 15 and IAS 18) with reconciliations included in theAppendix to this communication. 3
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