Page 1

Q1 Interim report , January - March 2021 January - March 2021 Sinch Net sales increased by 106 percent to SEK 3,349.9 million ( 1,624.2 ) . Organic growth in local currency was 38 percent . • Gross profit increased by 84 percent to SEK 820.0 million ( 446.7 ) . Organic growth in local currency was 24 percent . Adjusted EBITDA ' increased by 30 percent to SEK 240.3 million ( 184.3 ) . Excluding currency effects and costs for share - based incentive programs , the increase would have been 52 percent . Adjusted EBIT2 amounted to SEK 215.0 million ( 168.8 ) . • Profit after tax for the quarter amounted to SEK 140.8 million ( 96.4 ) . • Diluted earnings per share were SEK 2.12 ( 1.74 ) . " We deliver at scale and handled 40 billion mobile messages in Q1 alone . We reap the benefits of a global platform but recognise the importance of local presence . " - Oscar Werner , VD Significant events during the quarter • Sinch closed the acquisition of Wavy on 1 February for total cash consideration of BRL 355 million and 1,534,582 new shares in Sinch . The acquisition was financed with a combination of existing cash reserves and debt facilities . Wavy is a leading supplier of messaging services in Latin America with a leading position in next - generation conversational messaging . Wavy operates in Brazil , Mexico , Colombia , Peru , Chile , Argentina and Paraguay . Sinch's products within Business Support Systems ( BSS ) for mobile operators were sold on 1 February 2021 to eRate , a Norway- based telecommunications specialist focused on solutions in billing and rating . • On 17 February 2021 , Sinch announced that it had closed an agreement to acquire Inteliquent , the largest independent voice communications provider in the US , for total cash consideration of USD 1,140 million on a cash and debt - free basis . The acquisition establishes Sinch as the leader in voice connectivity for both enterprises and telecom carriers in the US . Inteliquent powers voice communications for the leading communication service providers and enterprises in North America . The company operates a fully redundant , geodiverse , carrier - grade Tier 1 network that is directly connected to telecom carriers that cover 94 percent of the US population . • Covid - 19 is still having negative impact on the small Voice and Video segment . The overall financial impact on the Sinch Group remains modest , however , because volumes in Messaging have increased in parallel . 1 EBITDA before depreciation , amortization and impairments excluding items affecting comparability . See page 3 for a specification of items affecting comparability . 2 EBIT excluding items affecting comparability and depreciation and amortization of acquisition - related assets . See Note 4 for a specification of depreciation and amortization . Invitation to conference call Sinch will present the interim report in a webcasted conference call on 28 April at 14:00 CEST . Watch the presentation at investors.sinch.com/webcast or call and register a couple of minutes in advance . Sweden : +46 ( 0 ) 8 566 42 651 United Kingdom : +44 333 30 00 804 United States : +1 631 913 1422 Access code : 892 718 64 # INTERIM REPORT JANUARY - MARCH 2021 Page 1 of 23