F I R S T B U S E Y C O R P O R A T I O N 2 0 2 6F I R S TQ U A R T E R E A R N I N G S (Form 8-K)

INVESTOR CONTACT: Christopher H.M. Chan, Chief Financial Officer | 913-647-9825

Net Income

Diluted EPS

Net Interest Margin1

ROAA1

ROATCE1

$50.0 million

$63.2 million (adj)2

$0.52

$0.67 (adj)2

3.77%2

3.64% (adj)2

1.12%2

1.42% (adj)2

11.10%2

14.12% (adj)2

MESSAGE FROM OUR CHAIRMAN, PRESIDENT & CEO

CONTENTS

Busey posted strong results this quarter with adjusted diluted EPS of $0.67, up 17.5% year-over-year, and continued strong profitability as adjusted return on average assets2 improved by 33 basis points to 1.42% and adjusted ROATCE improved by 287 basis points to 14.12%. Net interest margin2 continued its expansion, up 6 basis points quarter-over-quarter, to 3.77%. Wealth management fee income had another record quarter, with net inflows offsetting lower market valuations and sustaining relatively stable assets under care. Expenses remained well controlled as we identified, and executed on, additional synergies related to the CrossFirst acquisition, with the efficiency ratio improving 390 basis points from last year, to 54.8%. Capital remained strong with Common Equity Tier 1 Capital to Risk Weighted Assets3 at 12.31%, even after significant share repurchases of $65.6 million during the quarter. Tangible book value per common share2 grew 8.2% year-over-year to $20.14. As expected, loan and deposit balances were down seasonally. Credit remained strong with non-performing assets down 14.0% quarter-over-quarter and the ratio of allowance to loans was stable at 1.26%. As we look ahead to the rest of the year, we have significant momentum with the addition of talent to the organization, and new business pipelines are building. With robust capital and ample liquidity, Busey remains well positioned to drive meaningful value for our associates, clients, communities, and shareholders in this volatile macro environment.

Van A. Dukeman

Chairman, President and CEO of First Busey Corporation

Financial Results

1

Balance Sheet Strength

7

Corporate Profile

11

Non-GAAP Financial Information

13