First Busey Results Presentation Deck

4Q23 Earnings Investor Presentation FirsTech, A Uniquely Positioned Payment Technology Company Payments Segments Traditional Receivables Services ▪ Lockbox ▪eLockbox Sales Channels ▪ Enterprise Sales Team FI Sales Team ▪ FI Reseller Sales ▪ Partnerships Lines of Business ▪ FIS ▪ Munis/Gov • Utilities/Telecom/ First Busey Corporation | Ticker: BUSE Insurance Health Electronic Payments ■ Services Online (PA/Core) ▪ CSR, IVR, Mobile ▪ IAS/Walk-in ▪ SOW/T&M Sales Channels ▪ Enterprise Sales Team FI Sales Team FI Reseller Sales ▪ Partnerships ■ ■ Lines of Business FIS ■ ▪ Munis/Gov ▪ Utilities/Telecom/ ■ ■ Insurance Health SMB Merchant Services L ■ Services Sales Channels Merchant Sales Team ▪ Agent Referrals ▪ FI Reseller Sales ▪ Partnerships ■ ■ ■ ■ POS Online Munis/Gov ▪ Utilities/Telecom/ Lines of Business FIS Insurance Health SMB 34 B

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