Results of Operations and Financial Condition. BancFirst Corporation Reports Second Quarter Earnings On July 23, 2026, BancFirst Corporation announced its results of operations for the quarter ended June 30, 2026. A copy of the related press release is being filed as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference in its entirety.

Regulation FD Disclosure. BancFirst Corporation Announces Acquisition of SpiritBank On June 10, 2026, BancFirst Corporation entered into an agreement to acquire Spirit BankCorp, Inc., an Oklahoma corporation and SpiritBank (Spirit), a privately held community bank headquartered in Tulsa, Oklahoma. Spirit has approximately $939.6 million in total assets, $618.4 million in loans, and $847.2 million in deposits. The transaction is expected to close in the fourth quarter of 2026, subject to regul…

Regulation FD Disclosure. BancFirst Corporation Announces Declaration of Quarterly Dividend on its Common Stock and an Interest Payment on its BFC Capital Trust II On May 28, 2026, BancFirst Corporation’s Board of Directors declared a $0.49 per share cash dividend on its common stock. The dividend is payable July 15, 2026, to shareholders of record on June 30, 2026. BancFirst Corporation will also pay the quarterly interest payment on $26.8 million of its 7.20% Junior Subordinated Debentures…

Results of Operations and Financial Condition. BancFirst Corporation Reports First Quarter Earnings On April 16, 2026, BancFirst Corporation announced its results of operations for the quarter ended March 31, 2026. A copy of the related press release is being filed as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference in its entirety.

Regulation FD Disclosure. BancFirst Corporation Announces Declaration of Quarterly Dividend on its Common Stock and an Interest Payment on its BFC Capital Trust II On February 27, 2026, BancFirst Corporation’s Board of Directors declared a $0.49 per share cash dividend on its common stock. The dividend is payable April 15, 2026, to shareholders of record on March 31, 2026. BancFirst Corporation will also pay the quarterly interest payment on $26.8 million of its 7.20% Junior Subordinated Debe…

Principal Accounting Officer — Randy Foraker: Randy Foraker retired as the Principal Accounting Officer, succeeded by Hannah Andrus.

Results of Operations and Financial Condition. BancFirst Corporation Reports Fourth Quarter Earnings On January 22, 2026, BancFirst Corporation announced its results of operations for the quarter ended December 31, 2025. A copy of the related press release is being filed as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference in its entirety.

Regulation FD Disclosure. BancFirst Corporation Announces Declaration of Quarterly Dividend on its Common Stock and an Interest Payment on its BFC Capital Trust II On November 20, 2025, BancFirst Corporation’s Board of Directors declared a $0.49 per share cash dividend on its common stock. The dividend is payable January 15, 2026, to shareholders of record on December 31, 2025. BancFirst Corporation will also pay the quarterly interest payment on $26.8 million of its 7.20% Junior Subordinated…

Regulation FD Disclosure. BancFirst Corporation Announces Acquisition of American Bank of Oklahoma On November 17, 2025, BancFirst Corporation acquired American Bank of Oklahoma (ABOK), a privately held community bank headquartered in Collinsville, Oklahoma. ABOK has the following banking locations: one location in Collinsville, Oklahoma, one location in Disney, Oklahoma, one location in Ramona, Oklahoma, one location in Skiatook, Oklahoma and two locations in Muskogee, Oklahoma. ABOK has app…

Results of Operations and Financial Condition. BancFirst Corporation Reports Third Quarter Earnings On October 17, 2025, BancFirst Corporation announced its results of operations for the quarter ended September 30, 2025. A copy of the related press release is being filed as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference in its entirety.

Regulation FD Disclosure. BancFirst Corporation Announces Declaration of Quarterly Dividend on its Common Stock and an Interest Payment on its BFC Capital Trust II On August 28, 2025, BancFirst Corporation’s Board of Directors declared a $0.49 per share cash dividend on its common stock. The dividend is payable October 15, 2025, to shareholders of record on September 30, 2025. BancFirst Corporation will also pay the quarterly interest payment on $26.8 million of its 7.20% Junior Subordinated…

Results of Operations and Financial Condition. BancFirst Corporation Reports Second Quarter Earnings On July 17, 2025, BancFirst Corporation announced its results of operations for the quarter ended June 30, 2025. A copy of the related press release is being filed as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference in its entirety.

Regulation FD Disclosure. BancFirst Corporation Announces Declaration of Quarterly Dividend on its Common Stock and an Interest Payment on its BFC Capital Trust II On May 22, 2025, BancFirst Corporation’s Board of Directors declared a $0.46 per share cash dividend on its common stock. The dividend is payable July 15, 2025, to shareholders of record on June 30, 2025. BancFirst Corporation will also pay the quarterly interest payment on $26.8 million of its 7.20% Junior Subordinated Debentures…

Regulation FD Disclosure. BancFirst Corporation Announces Acquisition of American Bank of Oklahoma On May 20, 2025, BancFirst Corporation entered into an agreement to acquire American Bank of Oklahoma (ABOK), a privately held community bank headquartered in Collinsville, Oklahoma. ABOK has approximately $385 million in total assets, $280 million in loans, and $320 million in deposits. The transaction is expected to close in the third quarter of 2025, subject to regulatory approvals and custom…

Results of Operations and Financial Condition. BancFirst Corporation Reports First Quarter Earnings On April 17, 2025, BancFirst Corporation announced its results of operations for the quarter ended March 31, 2025. A copy of the related press release is being filed as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference in its entirety.

Regulation FD Disclosure. BancFirst Corporation Announces Declaration of Quarterly Dividend on its Common Stock and an Interest Payment on its BFC Capital Trust II On February 27, 2025, BancFirst Corporation’s Board of Directors declared a $0.46 per share cash dividend on its common stock. The dividend is payable April 15, 2025, to shareholders of record on March 31, 2025. BancFirst Corporation will also pay the quarterly interest payment on $26.8 million of its 7.20% Junior Subordinated Debe…

Results of Operations and Financial Condition. BancFirst Corporation Reports Fourth Quarter Earnings On January 23, 2025, BancFirst Corporation announced its results of operations for the quarter ended December 31, 2024. A copy of the related press release is being filed as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference in its entirety.

Executive Chairman — David E. Rainbolt: The Executive Chairman is transitioning to a non-executive Chairman role, which is a change in status rather than a departure from the company.

Regulation FD Disclosure. BancFirst Corporation Announces Declaration of Quarterly Dividend on its Common Stock and an Interest Payment on its BFC Capital Trust II On November 21, 2024, BancFirst Corporation’s Board of Directors declared a $0.46 per share cash dividend on its common stock. The dividend is payable January 15, 2025, to shareholders of record on December 31, 2024. BancFirst Corporation will also pay the quarterly interest payment on $26.8 million of its 7.20% Junior Subordinated…

Results of Operations and Financial Condition. BancFirst Corporation Reports Third Quarter Earnings On October 17, 2024, BancFirst Corporation announced its results of operations for the quarter ended September 30, 2024. A copy of the related press release is being filed as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference in its entirety.

Regulation FD Disclosure. BancFirst Corporation Announces Declaration of Quarterly Dividend on its Common Stock and an Interest Payment on its BFC Capital Trust II On August 22, 2024, BancFirst Corporation’s Board of Directors declared a $0.46 per share cash dividend on its common stock. The dividend is payable October 15, 2024, to shareholders of record on September 30, 2024. BancFirst Corporation will also pay the quarterly interest payment on $26.8 million of its 7.20% Junior Subordinated…

Results of Operations and Financial Condition. BancFirst Corporation Reports Second Quarter Earnings On July 18, 2024, BancFirst Corporation announced its results of operations for the quarter ended June 30, 2024. A copy of the related press release is being filed as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference in its entirety.

Regulation FD Disclosure. BancFirst Corporation Announces Declaration of Quarterly Dividend on its Common Stock and an Interest Payment on its BFC Capital Trust II On May 23, 2024, BancFirst Corporation’s Board of Directors declared a $0.43 per share cash dividend on its common stock. The dividend is payable July 15, 2024, to shareholders of record on June 28, 2024. BancFirst Corporation will also pay the quarterly interest payment on $26.8 million of its 7.20% Junior Subordinated Debentures…

CFO — Kevin Lawrence: The CFO resigned to pursue other interests but was immediately succeeded by a named external hire, indicating an orderly succession rather than a sudden loss of leadership.

Results of Operations and Financial Condition. BancFirst Corporation Reports First Quarter Earnings On April 18, 2024, BancFirst Corporation announced its results of operations for the quarter ended March 31, 2024. A copy of the related press release is being filed as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference in its entirety.