ironSource SPAC Presentation Deck

Appendix: non-GAAP adjustments in millions) Cost of Revenues Stock-based compensation expense Depreciation & amortization Non-GAAP COR Adjustments Research & Development Stock-based compensation expense Acquisition related compensation costs Non-GAAP R&D Adjustments Sales & Marketing Stock-based compensation expense Depreciation & amortization Acquisition related compensation costs Non-GAAP S&M Adjustments General & Administrative Stock-based compensation expense Depreciation & amortization Fair value adjustment related to contingent consideration Non-GAAP G&A Adjustments IS ironSource FY2019 (0) (10) $ (10) (4) 0 $ (4) (5) (1) 0 O $ (6) (7) (1) 1 $(7) FY2020 (0) (10) $ (11) (4) 0 $ (4) (1) 0 $ (6) (4) (1) 0 D $ (5) FY2021E (19) $ (20) (16) (0) $ (16) (21) (3) (1) $ (25) (9) (1) 0 $ (11) FY2022E (2) (21) $ (23) (20) (0) $ (20) (28) (0) $ (32) (14) (1) 0 $ (15) Confidential 53

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