FHLB Advances

The FHLB allows the Company to borrow on a blanket floating lien status collateralized by FHLB stock and real estate loans. As of March 31, 2026 and December 31, 2025, borrowing capacity available under this arrangement was $642.0 million and $499.5 million, respectively. The Company had no FHLB advances outstanding at March 31, 2026 and December 31, 2025. Letters of credit with the FHLB in the amount of $483.1 million were issued at March 31, 2026. The letters of credit are used to collateralize public fund deposit accounts in excess of FDIC insurance limits and have expirations ranging from April 2026 through March 2027.

Line of Credit - Senior Debt

The Company has a $70.0 million revolving line of credit facility which was modified effective March 10, 2026, whereby the facility was increased by $15.0 million. The modification did not affect the note rate, which remains unchanged at the The Wall Street Journal US Prime Rate, as such changes from time to time, less 0.625%, with a floor rate of 5.00% per annum. Interest is payable quarterly on the 10th day of March, June, September and December through maturity date of March 10, 2028. All principal and unpaid interest is due at maturity. The note is secured by 100% of the outstanding stock of the Bank and is senior in rights to the subordinated debt described below. Prior to the modification, the $55.0 million facility was due on March 10, 2026. At March 31, 2026 and December 31, 2025, the outstanding balance was $57.9 million and $37.9 million, respectively.

Note Payable - Subordinated Debt

On March 31, 2022, the Company entered into Subordinated Note Purchase Agreements (the “Note Purchase Agreements”) with certain qualified institutional buyers and institutional accredited investors (the “Purchasers”) pursuant to which the Company issued and sold $82.3 million in aggregate principal amount of its 5.500% Fixed-to-Floating Rate Subordinated Notes due 2032 (the “Notes”) in a private placement transaction in reliance on exemptions from the registration requirements of the Securities Act of 1933, as amended (the “Securities Act”), pursuant to Section 4(a)(2) of the Securities Act and Regulation D thereunder. The Notes were issued by the Company to the Purchasers at a price equal to 100% of their face amount. The Note Purchase Agreements contain certain customary representations, warranties and covenants made by the Company, on the one hand, and the Purchasers, severally and not jointly, on the other hand. The Notes are intended to qualify as Tier 2 capital for regulatory capital purposes.

The Notes were issued under an Indenture, dated as of March 31, 2022 (the “Indenture”), by and between the Company and UMB Bank, N.A., as trustee. The Notes will mature on April 1, 2032. From and including March 31, 2022, to, but excluding, April 1, 2027 or the date of early redemption, the Company will pay interest on the Notes semi-annually in arrears on April 1 and October 1 of each year, commencing on October 1, 2022, at a fixed interest rate of 5.500% per annum. From and including April 1, 2027, to, but excluding, the maturity date or the date of early redemption (the “Floating Rate Period”), the Company will pay interest on the Notes at a floating interest rate. The floating interest rate will be reset quarterly, and the interest rate for any Floating Rate Period shall be equal to the then-current Three-Month Term Secured Overnight Financing Rate (“SOFR”) plus 315 basis points for each quarterly interest period during the Floating Rate Period. Interest payable on the Notes during the Floating Rate Period will be paid quarterly in arrears on January 1, April 1, July 1 and October 1, of each year, commencing on July 1, 2027. Notwithstanding the foregoing, in the event that Three-Month Term SOFR is less than zero, then Three-Month Term SOFR rate shall be deemed to be zero.

On March 31, 2022, in connection with the issuance and sale of the Notes, the Company entered into Registration Rights Agreements with the Purchasers. Under the terms of the Registration Rights Agreements, the Company agreed to take certain actions to provide for

the exchange of the Notes for subordinated notes that are registered under the Securities Act and have substantially the same terms as the Notes. The exchange offer under the Registration Rights Agreement was completed on July 19, 2022.

The Company may, at its option, redeem the Notes (i) in whole or in part beginning with the interest payment date on April 1, 2027, and on any interest payment date thereafter, or (ii) in whole, but not in part, upon the occurrence of a “Tier 2 Capital Event,” a “Tax Event,” or “Investment Company Event”. The redemption price for any redemption is 100% of the principal amount of the Notes, plus accrued and unpaid interest thereon to, but excluding, the date of redemption. Any redemption of the Notes will be subject to the receipt of the approval of the Federal Reserve to the extent then required under applicable laws or regulations, including capital adequacy rules or regulations.

There is no right of acceleration of maturity of the Notes in the case of default in the payment of principal of, or interest on, the Notes or in the performance of any other obligation of the Company under the Notes or the Indenture. The Indenture provides that holders of the Notes may accelerate payment of indebtedness only upon the Company’s bankruptcy, insolvency, reorganization, receivership or other similar proceedings.

The Notes are general unsecured, subordinated obligations of the Company and rank junior to all of its existing and future Senior Indebtedness (as defined in the Indenture), including all of its general creditors. The Notes will be equal in right of payment with any of the Company’s existing and future subordinated indebtedness and will be senior to the Company’s obligations relating to any junior subordinated debt securities. In addition, the Notes are effectively subordinated to all secured indebtedness of the Company, including without limitation, the Bank’s liabilities to depositors in connection with deposits in the Bank, to the extent of the value of the collateral securing such indebtedness.

In connection with the above offering, the Company incurred approximately $2.1 million in debt issuance costs which will be amortized to interest expense on a straight-line basis over the ten-year life of the Notes. The Company had $82.3 million each in outstanding principal as of March 31, 2026 and December 31, 2025, and $1.3 million each in unamortized debt issuance costs.

Federal Reserve Borrower-in-Custody (BIC) Loan Pledge Arrangement

The Company has a Borrower-in-Custody (“BIC”) arrangement in place with the Federal Reserve Bank of Dallas. The arrangement provides the Bank with the ability to secure collateralized contingency funding from the Federal Reserve Bank's Discount Window by pledging its commercial and industrial loans on a blanket floating lien status. As of March 31, 2026 and December 31, 2025, total borrowing capacity under this arrangement was $1.7 billion and $1.5 billion, respectively. The Company had no advances outstanding under these lines as of March 31, 2026 or December 31, 2025.

Federal Funds Lines of Credit

At March 31, 2026 and December 31, 2025, the Company had federal funds lines of credit with commercial banks that provide for availability to borrow up to an aggregate of $41.5 million and $36.5 million, respectively. The Company had no advances outstanding under these lines at March 31, 2026 and December 31, 2025.