First Busey Results Presentation Deck

4Q23 Earnings Investor Presentation High Quality Loan Portfolio: CRE Investor Owned CRE Loans by Property Type $ in thousands Property Type Apartments Retail Industrial/Warehouse Traditional Office Student Housing Hotel Medical Office Senior Housing LAD Specialty Restaurant Nursing Homes Health Care 1-4 Family Other Grand Total ■ 12/31/23 Balances $611,403 510,696 339,032 267,759 263,638 189,184 183,664 169,679 129,999 ■ First Busey Corporation | Ticker: BUSE 105,645 24,649 24,102 20,000 17,977 544 ■ $2,857,971 % of Total Loans 8.0 % 6.7 % 4.4 % 3.5 % 3.4 % 2.5 % 2.4 % 2.2 % 1.7 % Investor Owned CRE Portfolio ¹ (CRE-I) 1 1.4 % 0.3 % 0.3 % 0.3 % 0.2 % 0.0 % 37.4 % 1 12/31/23 Classified Balances ¹ Investor owned CRE includes C&D, Multifamily and non-owner occupied CRE $0 5,335 475 18,654 3,811 Only 1.0% of total CRE-I loans are classified Low levels of concentrated exposure - continue to actively monitor CRE-I concentrations vs. internally-defined appetite thresholds 100/300 Test: 32% C&D | 213% CRE-I Apartments & Student Housing represents 31% of CRE-I 59% WAvg LTV & 58% long-term customers (4+ years) 131 79 85 0 $28,570 0 0 Owner Occupied CRE Loans by Property Type 12/31/23 Classified Balances $ in thousands Property Type Industrial/Warehouse Specialty Traditional Office Medical Office Retail Restaurant Nursing Homes Health Care Hotel Other Grand Total I I ■ 12/31/23 Balances $365,527 233,022 111,612 93,930 61,879 46,178 1,498 737 601 200 $915,184 % of Total Loans 4.8 % 3.0 % 1.5 % 1.2 % 0.8 % 0.6 % 0.0 % 0.0 % 0.0 % 0.0 % 12.0 % Owner Occupied CRE Portfolio (OOCRE) Only 0.8% of total OOCRE loans are classified 12 $4,552 532 437 1,523 47 0 0 0 0 $7,091 Owner occupied loans are not considered regulatory CRE OOCRE properties are underwritten to operating cash flow and guidance requires a 1.20x FCCR OOCRE have lower risk profiles as they are underwritten to the primary occupying business and are not as exposed to lease turnover risks Industrial/Warehouse properties are the largest OOCRE segment, comprising 40% of the OOCRE portfolio while only 4.8% of total loans B

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