Sinch Mergers and Acquisitions Presentation Deck

Financial leverage -2.1 Q1 21 reported Pro forma net debt/Adjusted EBITDA -1.8 Q1 21 pro forma 3.1 + Inteliquent -0.9 Share issue May 2021 The acquisitions of Inteliquent and MessageMedia are pending regulatory approval. 2.6 + Message Media ● Pro forma calculation includes last 12 months of Adj EBITDA for acquired entities Updated financial target is to maintain Net debt <3.5x adjusted EBITDA over time Pro forma Net debt/Adj EBITDA of 2.6x to after recent share issue and payment for Inteliquent and MessageMedia 14

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