Sec Form 4 Filing - Maddox Mike @ FIRST BUSEY CORP /NV/ - 2025-09-02

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Maddox Mike 2. Issuer Name and Ticker or Trading Symbol FIRST BUSEY CORP /NV/ [ BUSE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) President (Last) (First) (Middle) 11440 TOMAHAWK CREEK PARKWAY 3. Date of Earliest Transaction (MM/DD/YY) 09/02/2025 (Street) LEAWOOD, KS66211 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 07/28/2025 A V 1.809 ( 1 ) A $ 23.1925 210,307.6211 D Series A Non-Cumulative Perpetual Preferred Stock 50 D Common Stock 4,739 ( 2 ) I Spouse Series A Non-Cumulative Perpetual Preferred Stock 100 ( 2 ) I Spouse Depositary Shares, 1/40 interest in Series B Preferred Stock ( 3 ) 09/02/2025 P 21,780 A $ 25.2622 ( 4 ) 21,780 ( 2 ) I Spouse

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Appreciation Right $ 9.37 03/01/2025 01/24/2028 Common Stock 38,142 38,142 D Stock Appreciation Right $ 11.24 03/01/2025 05/01/2028 Common Stock 15,257 15,257 D Stock Appreciation Right $ 14.01 03/01/2025 06/01/2030 Common Stock 17,292 17,292 D Stock Appreciation Right $ 21.35 03/01/2025 07/26/2033 Common Stock 40,050 40,050 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Maddox Mike 11440 TOMAHAWK CREEK PARKWAY LEAWOOD, KS66211 X President Signatures /s/ Catherine Alqallaf, attorney-in-fact 09/04/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Shares were acquired through dividend reinvestment in the First Busey Corporation Employee Stock Purchase Plan in transactions that were exempt under both Rule 16b-3(c) and Rule 16b-3(d). ( 2 )The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose. ( 3 )Each Depositary Share represents 1/40th interest in a share of the issuer's 8.25% Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series B, par value $0.001 per share. ( 4 )The price reported above reflects the weighted average purchase price. The purchase was executed in multiple trades at prices ranging from $25.2300 to $25.2699, inclusive. The reporting person undertakes to provide the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the shares purchased at each separate price within the range set forth in this footnote (4) to this Form 4.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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