Sinch Mergers and Acquisitions Presentation Deck

Improved margin profile 26% 33% Gross profit margin Sinch L12M as reported 10% 14% Adj EBITDA margin Sinch L12M pro forma* * Pro forma as of Q1 2021, including last 12 months earnings in Sinch, ACL, SDI, Wavy, Inteliquent and MessageMedia. Inteliquent contribution excludes covid uplift considered to be temporary. ● ● Multiple acquisitions over past year ACL, SDI, Wavy consolidated less than 12 months Inteliquent and MessageMedia transactions not yet closed Pro forma* calculation implies SEK 17.9 bn revenue, SEK 6.0 bn gross profit, and SEK 2.4 bn Adj EBITDA Significantly strengthened margin profile 13

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