Earnings Presentation Q2 2020

Q2 2020 U.S. Engagement Metrics Establishing baseline engagement metrics post-Wells Fargo launch. Note that bank launches, COVID-19, new logos and verticals all impact these metrics and there may be variation in future quarters before stabilization. Offer Activation Rates(¹) by Industry 2.55% E-Comm 2.05% Entertainment 3.41% Grocery © 2020 Cardlytics 3.08% (1) Please see appendix for definitions. Other 6.01% Restaurant 3.09% Retail 2.18% Subscription 2.55% Travel 0.40% E-Comm Campaign Spend Ratios(¹) by Industry 0.05% Entertainment 0.34% Grocery 0.15% Other 2.70% Restaurant 0.81% Monthly log-in days(¹) show that FI MAUs are logging in 10.27 days per month. Offer activation rates(¹) show higher rates for small ticket, volume heavy offers versus large ticket and subscription offers. Campaign spend ratios(¹) show Cardlytics currently targets a small proportion of total FI MAU spend. Retail • As budgets increase and more advertisers come onto the platform, more spend from FI MAUS can be targeted with offers. • There remains considerable room to target larger audiences in light of existing FI MAU engagement levels. 0.17% Subscription 0.21% Travel 7

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