BANCFIRST CORP /OK/ — M&A Activity 2026

Jun 10, 2026

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): June 10, 2026

BancFirst Corporation

(Exact name of Registrant as Specified in Its Charter)

Oklahoma	0-14384	73-1221379
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)
100 N. Broadway Ave.
Oklahoma City , Oklahoma		73102-8405
(Address of Principal Executive Offices)		(Zip Code)

Registrant’s Telephone Number, Including Area Code: 405 270-1086

None

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $1.00 Par Value Per Share	BANF	Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 7.01 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 regulatory approvals and customary closing conditions. Spirit will operate under its present name until it is merged into BancFirst.

SIGNATURES

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.

BancFirst Corporation — /s/ Hannah Andrus
Hannah Andrus Executive Vice President Chief Financial Officer