ironSource SPAC Presentation Deck

Powerful customer cohort expansion REVENUE CONTRIBUTION BY CUSTOMER COHORT¹ 2016 2017 Cohort ES ironSource 2017 2018 Cohort 3.6x 2018 4.0x 4.3x 2019 2019 Cohort 3.0x 4.8x 9.1x 2020 2020 Cohort Customer Expansion² . Customer success • Expanded usage of existing solutions • Incremental cross-sell and up-sell 69% of Sonic customers >$100K use both user growth and monetization solutions, representing 59% of revenue³ 13% of Sonic customers >$100K use on-device placements and benefit from Aura, representing 29% of revenue³ ¹ Measured for all customers.² Cohort expansion is calculated as the last trailing 12-month revenue contribution from continuing operations, divided by the first available 12-month revenue contribution from continuing operations.³ For the year ended December 31, 2020. Confidential 39

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