Other Events. On August 7, 2026, First Busey Corporation declared a quarterly cash dividend of $0.515625 per depositary share on its 8.25% Fixed-Rate Series B Non-Cumulative Perpetual Preferred Stock. The dividend is payable on September 1, 2026, to stockholders of record as of August 17, 2026. Signature Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. FIRST…

Director — Stanley J. Bradshaw: Stanley J. Bradshaw retired from the board of directors.

of this Current Report on Form 8-K and Exhibit 99.1 attached hereto is being “furnished” and will not, except to the extent required by applicable law or regulation, be deemed “filed” by Busey for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (“Exchange Act”), or otherwise subject to the liabilities of that section, nor will any of such information or exhibits be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended (“Securit…

Chairman, President and Chief Executive Officer — Van A. Dukeman: Mr. Dukeman's term as CEO was extended for three years with a retention award.

Other Events. On July 14, 2026, First Busey declared a quarterly cash dividend of $0.26 per share on its outstanding shares of common stock. The dividend is payable on July 31, 2026, to stockholders of record as of July 24, 2026.

Approval of an amendment to the equity incentive plan at the annual meeting.

Other Events Amendment to Share Repurchase Program On May 20, 2026, Busey's board of directors approved an amendment to Busey’s previously adopted share repurchase program to increase the number of shares of Busey’s common stock available for repurchase by 4,000,000 shares. As of the close of business on May 20, 2026, under the amended share repurchase program, Busey is now authorized to repurchase, from time to time as Busey deems appropriate, up to a remaining number of 4,903,775 shares of…

Other Events. On May 5, 2026, First Busey Corporation declared a quarterly cash dividend of $0.515625 per depositary share on its 8.25% Fixed-Rate Series B Non-Cumulative Perpetual Preferred Stock. The dividend is payable on June 1, 2026, to stockholders of record as of May 15, 2026. Signature Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. FIRST BUSEY CORP…

of this Current Report on Form 8-K and Exhibit 99.1 attached hereto is being “furnished” and will not, except to the extent required by applicable law or regulation, be deemed “filed” by Busey for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (“Exchange Act”), or otherwise subject to the liabilities of that section, nor will any of such information or exhibits be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended (“Securit…

Other Events. On April 14, 2026, First Busey Corporation declared a quarterly cash dividend of $0.26 per share on its outstanding shares of common stock. The dividend is payable on May 1, 2026, to stockholders of record as of April 24, 2026. Signature Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. FIRST BUSEY CORPORATION Date: April 14, 2026 By: /s/ CHRIST…

Other Events. On February 3, 2026, First Busey Corporation declared a quarterly cash dividend of $0.515625 per depositary share on its 8.25% Fixed-Rate Series B Non-Cumulative Perpetual Preferred Stock. The dividend is payable on March 2, 2026, to stockholders of record as of February 13, 2026. Signature Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. FIRST…

of this Current Report on Form 8-K and Exhibit 99.1 attached hereto is being “furnished” and will not, except to the extent required by applicable law or regulation, be deemed “filed” by Busey for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (“Exchange Act”), or otherwise subject to the liabilities of that section, nor will any of such information or exhibits be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended (“Securit…

President and Vice Chairman (Busey) / President and Chief Executive Officer (Bank) — Michael J. Maddox: Mr. Maddox resigned from his positions and received a significant severance package.

Other Events. On January 13, 2026, First Busey Corporation declared a quarterly cash dividend of $0.26 per share on its outstanding shares of common stock, which represents a 4% increase from the previous quarterly dividend of $0.25 per share. The dividend is payable on January 30, 2026, to stockholders of record as of January 23, 2026. Signature Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the un…

Other Events Amendment to Share Repurchase Program On December 4, 2025, the First Busey Corporation (“Busey”) board of directors approved an amendment to Busey’s previously adopted share repurchase program to increase the number of shares of Busey’s common stock available for repurchase by 4,000,000 shares. As of the close of business on December 4, 2025, under the amended share repurchase program, Busey is now authorized to repurchase, from time to time as Busey deems appropriate, up to a re…

Other Events. On November 4, 2025, First Busey Corporation declared a quarterly cash dividend of $0.515625 per depositary share on its 8.25% Fixed-Rate Series B Non-Cumulative Perpetual Preferred Stock. The dividend is payable on December 1, 2025, to stockholders of record as of November 14, 2025. Signature Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. FI…

of this Current Report on Form 8-K and Exhibit 99.1 attached hereto is being “furnished” and will not, except to the extent required by applicable law or regulation, be deemed “filed” by Busey for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (“Exchange Act”), or otherwise subject to the liabilities of that section, nor will any of such information or exhibits be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended (“Securit…

Other Events. On October 14, 2025, First Busey Corporation declared a quarterly cash dividend of $0.25 per share on its common stock. The dividend is payable on October 31, 2025, to stockholders of record as of October 24, 2025. Signature Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. FIRST BUSEY CORPORATION Date: October 14, 2025 By: /s/ CHRISTOPHER H.M.…

Chief Financial Officer — Christopher H.M. Chan: Appointment of Christopher H.M. Chan as Chief Financial Officer.

Other Events. On August 8, 2025, First Busey Corporation declared a quarterly cash dividend of $0.578646 per depositary share on its 8.25% Fixed-Rate Series B Non-Cumulative Perpetual Preferred Stock. The dividend is payable on September 2, 2025, to stockholders of record as of August 18, 2025. Signature Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. FIRST…

of this Current Report on Form 8-K and Exhibit 99.1 attached hereto is being “furnished” and will not, except to the extent required by applicable law or regulation, be deemed “filed” by Busey for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (“Exchange Act”), or otherwise subject to the liabilities of that section, nor will any of such information or exhibits be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended (“Securit…

Other Events. On July 8, 2025, the Board of Directors of First Busey Corporation (“Busey”) declared a quarterly cash dividend of $0.25 per share on Busey’s common stock. The dividend will be paid on July 25, 2025, to stockholders of record as of July 18, 2025. 2 Signature Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. FIRST BUSEY CORPORATION Date: July 8, 2…

Entry into a Material Definitive Agreement On May 13, 2025, First Busey Corporation (“Busey”) and Busey Bank entered into an Underwriting Agreement (the “Underwriting Agreement”) with Piper Sandler & Co., Morgan Stanley & Co. LLC, and Keefe, Bruyette & Woods, Inc. as representatives for the several underwriters set forth on Schedule A to the Underwriting Agreement (collectively, the “Underwriters”), pursuant to which Busey agreed to sell, and each Underwriter has severally and not jointly agr…

of this Current Report on Form 8-K and Exhibit 99.1 attached hereto is being “furnished” and will not, except to the extent required by applicable law or regulation, be deemed “filed” by Busey for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (“Exchange Act”), or otherwise subject to the liabilities of that section, nor will any of such information or exhibits be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended (“Securit…

Other Events. On April 8, 2025, the Board of Directors of First Busey Corporation (“Busey”) declared a quarterly cash dividend of $0.25 per share on Busey’s common stock. The dividend will be paid on April 25, 2025, to stockholders of record as of April 18, 2025. 2 Signature Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. FIRST BUSEY CORPORATION Date: April…