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Borrowings | 12 Months Ended
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Dec. 31, 2023
Debt Disclosure [Abstract] |
Borrowings | Note 11 — Borrowings Borrowed funds are summarized as follows:
| December 31,
(Dollars in thousands) | 2023 |  | 2022
Short-term FHLB advances | $ | 70,000 |  |  | $ | 550,000 |
Long-term FHLB advances | 6,474 |  |  | 6,740 |
GNMA repurchase liability | — |  |  | 24,569 |
Overnight repurchase agreements with depositors | 7,124 |  |  | 27,921 |
Correspondent short-term borrowings | — |  |  | 30,000 |
Total FHLB advances and other borrowings | $ | 83,598 |  |  | $ | 639,230 |
Subordinated indebtedness, net | $ | 194,279 |  |  | $ | 201,765 |
Additional details of certain FHLB advances are as follows:
(Dollars in thousands) | Amount |  | Interest Rate |  | Maturity Date
At December 31, 2023: |  |  |  |  |
Short-term FHLB advance, fixed rate | $ | 70,000 |  |  | 5.68 | % |  | 1/5/2024
At December 31, 2022: |  |  |  |  |
Short-term FHLB advance, fixed rate | $ | 450,000 |  |  | 4.55 | % |  | 1/3/2023
Short-term FHLB advance, fixed rate | 100,000 |  |  | 4.62 |  |  | 1/13/2023
Security for all indebtedness and outstanding commitments to the FHLB consists of a blanket floating lien on all of the Company’s first mortgage loans, commercial real estate and other real estate loans, as well as the Company’s investment in capital stock of the FHLB and deposit accounts at the FHLB. The net amounts available under the blanket floating lien at December 31, 2023 and 2022, were $2.01 billion and $1.29 billion, respectively. Long-Term Borrowings Interest rates for FHLB long-term advances outstanding at December 31, 2023 and 2022, ranged from 1.99% to 4.57%. These advances are all fixed rate and are subject to restrictions or penalties in the event of prepayment. Scheduled maturities of long-term advances from the FHLB at December 31, 2023, are as follows:
(Dollars in thousands) |  |
Years Ended December 31, |  |
2026 | $ | 465 |  |
2027 | 1,302 |  |
2028 | — |  |
Thereafter | 4,707 |  |
Total | $ | 6,474 |  |
Short-Term Borrowings In conjunction with the BTH merger, the Company assumed certain repurchase agreements with former BTH depositors that included the sale and repurchase of BTH investment securities of at least equal to the daily balance of the BTH depositor’s account, subject to maximum limitations, with various maturity dates. These BTH repurchase agreements were restructured and integrated into the Company’s repurchase agreements which include the sale and repurchase of investment securities and mature on a daily basis. The total overnight repurchase agreements with depositors carried a daily average interest rate of 2.21% for the year ended December 31, 2023, and 0.24% for the year ended December 31, 2022, The Company had unsecured lines of credit for the purchase of federal funds in the amount of $145.0 million and $140.0 million at December 31, 2023 and 2022, respectively. The Company also had a $75.0 million secured repurchase line of credit at December 31, 2023 and 2022. There were no amounts outstanding on these lines at either date. It is customary for the financial institutions granting the unsecured lines of credit to require a minimum amount of cash be held on deposit at that institution. Amounts required to be held on deposit are typically $250,000 or less, and the Company has complied with all compensating balance requirements to allow utilization of these lines of credit. Additionally, at December 31, 2023 and 2022, the Company had the availability to borrow $1.42 billion and $1.23 billion, respectively, from the discount window at the Federal Reserve Bank of Dallas, with $1.69 billion and $1.76 billion in commercial and industrial loans pledged as collateral, respectively. There were no borrowings against this line at December 31, 2023 or 2022. Holding Company Line of Credit The Company entered into a Loan Agreement (the "Loan Agreement"), along with certain ancillary instruments, with NexBank SSB ("Lender") pursuant to which the Lender can make one or more revolving credit loans of up to $50.0 million to the Company, which can be used for working capital and general corporate purposes. On October 29, 2021, the Company entered into a second amendment (the "Amendment") to the Loan Agreement. Pursuant to the Amendment, the loan may not exceed an aggregate principal amount of $100.0 million, consisting of the $50.0 million existing loan amount and any one or more potential incremental revolving loan commitments that the Lender may make in its sole discretion, up to an aggregate principal of $50.0 million, upon the request of the Company. The Lender has no obligation to agree to extend any incremental revolving loan or to increase the loan amount. The principal amounts borrowed under the Loan Agreement bear interest at a variable rate equal to the applicable Term SOFR for the then-current SOFR Interest Period plus 3.35% (as such terms are defined in the Loan Agreement). Pursuant to the Amendment, the line of credit available to the Company expired on October 27, 2023, at which time all amounts borrowed, together with applicable interest, fees and other amounts owed by the Company were due and payable. The Company may extend the maturity date to a date that is three hundred and sixty-four (364) days after the then-effective maturity date, no more than two times upon (i) delivery of a written request therefor to Lender at least thirty (30) days, but no more than (60) days, prior to the maturity date then in effect; and (ii) receipt by the Lender of a certificate of the Company dated the date of such request. The Company exercised the request for extension and the maturity date was extended to October 27, 2024. The Company had no balance outstanding on this revolving credit loan under the Loan Agreement at December 31, 2023 and $30.0 million outstanding at December 31, 2022. Subordinated Indebtedness On August 1, 2022, the Company assumed $37.6 million of subordinated promissory notes ("BTH Notes") from BTH. At December 31, 2023, the Company had BTH Notes of $34.7 million with maturity dates ranging from December 2024 to June 2031. Interest rates on the BTH Notes primarily reprice quarterly and range from Prime +50 bps to Prime +175 bps with a floor of 3.875% on all the BTH Notes, and ceilings ranging from 6.125% to 6.375%. The BTH Notes are intended to qualify for Tier 2 capital treatment and are substantively identical in terms and conditions, including priority, except for the maturity dates and interest rates payable on the notes. Interest is payable on the BTH Notes quarterly, and the principal amount of each BTH Note is payable at maturity. After the five-year anniversary of issuance, the Company can redeem the BTH Notes in part or in full at the Company’s discretion and, if applicable, subject to receipt of any required regulatory approvals. In addition, the BTH Notes can be redeemed at any time without penalty, upon not less than ten days’ notice, in the event that (i) the BTH Notes no longer qualify as Tier 2 capital as a result of any amendment or change in interpretation or application of laws or regulation that becomes effective after the date of issuance of the BTH Notes, or (ii) a tax event, or (iii) investment company act event, as defined in the BTH Notes. The BTH Notes are unsecured and rank senior to the Company’s common stock, any preferred stock that may be issued, and the BTH TruPS (defined below). In February 2020, Origin Bank completed an offering of $70.0 million in aggregate principal amount of 4.25% fixed-to-floating rate subordinated notes due 2030 (the “4.25% Notes”) to certain investors in a transaction exempt from registration under Section 3(a)(2) of the Securities Act of 1933, as amended. The 4.25% Notes initially bear interest at a fixed annual rate of 4.25%, payable semi-annually in arrears, to but excluding February 15, 2025. From and including February 15, 2025, to but excluding the maturity date or early redemption date, the interest rate will equal the three-month LIBOR rate (provided, that in the event the three-month LIBOR is less than zero, the three-month LIBOR will be deemed to be zero) plus 282 basis points, payable quarterly in arrears. On June 30, 2023, in conjunction with the customary fallback provision upon the discontinuation of LIBOR, the rate for the floating rate periods from and including February 15, 2025, on these notes transitioned to the three-month term SOFR plus 308 basis points. Origin Bank is entitled to redeem the 4.25% Notes, in whole or in part, on or after February 15, 2025, and to redeem the 4.25% Notes at any time in whole upon certain other specified events. The 4.25% Notes qualify as Tier 2 capital for regulatory capital purposes for Origin Bank. In October 2020, the Company completed of an offering of $80.0 million in aggregate principal amount of 4.50% fixed-to-floating rate subordinated notes due 2030 (the “4.50% Notes”). The 4.50% Notes bear a fixed interest rate of 4.50% payable semi-annually in arrears, to but excluding November 1, 2025. From and including November 1, 2025, to but excluding the maturity date or earlier redemption date, the 4.50% Notes bear a floating interest rate expected to equal the three-month term Secured Overnight Financing Rate plus 432 basis points, payable quarterly in arrears. The Company may redeem the 4.50% Notes at any time upon certain specified events or in whole or in part on or after November 1, 2025. The 4.50% Notes qualify as Tier 2 capital for regulatory capital purposes for the Company and a portion was transferred to Origin Bank, which qualifies as Tier 1 capital for regulatory capital purposes for the Bank. During the year ended December 31, 2023, and with the approval of the Board of Governors of the Federal Reserve System, the Company repurchased $5.0 million of the 4.50% notes in conjunction the Federal Deposit Insurance Corporation’s failed bank resolution process. On August 1, 2022, the Company assumed BTH’s obligations with respect to $7.2 million in aggregate principal amount of junior subordinated debentures issued to a statutory trust of BTH ("BTH TruPS"). The BTH TruPS and the Company’s two other wholly-owned, unconsolidated subsidiary grantor trusts were established for the purpose of issuing trust preferred securities. The trust preferred securities accrue and pay distributions periodically at specified annual rates as provided in each trust agreement. The trusts used the net proceeds from each of the offerings to purchase a like amount of junior subordinated debentures (the "debentures") of the Company. The debentures are the sole assets of the trusts. The Company’s obligations under the debentures and related documents, taken together, constitute a full and unconditional guarantee by the Company of the obligations of the trusts. The trust preferred securities are mandatorily redeemable upon maturity of the debentures and can be currently redeemed by the Company in whole or in part at a redemption price equal to 100% of the outstanding principal amount of the debentures, plus any accrued but unpaid interest to the redemption date. The trust preferred securities qualify as Tier 1 capital of the Company for regulatory purposes, subject to certain limitations. The following table is a summary of the terms of the junior subordinated debentures at December 31, 2023:
(Dollars in thousands) Issuance Trust |  | Issuance Date |  | Maturity Date |  | Amount Outstanding |  | Rate Type |  | Current Rate |  | Maximum Rate
CTB Statutory Trust I |  | 07/2001 |  | 07/2031 |  | $ | 6,702 |  |  | Variable (1) |  | 8.94 | % |  | 12.50 | %
First Louisiana Statutory Trust I |  | 09/2006 |  | 12/2036 |  | 4,124 |  |  | Variable (2) |  | 7.45 |  |  | 16.00 |
BT Holdings Trust I |  | 05/2007 |  | 09/2037 |  | 7,217 |  |  | Variable (3) |  | 7.26 |  |  | N/A
Par amount |  |  |  |  |  | $ | 18,043 |  |  |  |  |  |  |
Unamortized original issue discount |  |  | (1,016) |  |  |  |  |  |  |
Unamortized purchase accounting discount |  |  | (671) |  |  |  |  |  |  |
Total junior subordinated debt at December 31, 2023 | $ | 16,356 |  |  |  |  |  |  |
____________________________ (1)The trust preferred securities reprice quarterly based on the three-month average SOFR plus 3.30%, with the last reprice date on October 27, 2023. (2)The trust preferred securities reprice quarterly based on the three-month CME Term SOFR plus 1.80%, plus 0.26161% SOFR spread adjustment, with the last reprice date on December 13, 2023. (3)The trust preferred securities reprice quarterly based on the three-month CME Term SOFR plus 1.64%, plus 0.26161% SOFR spread adjustment, with the last reprice date on December 4, 2023. The balance of the subordinated indebtedness varies from the amounts carried on the consolidated balance sheets due to the remaining original issue and purchase discount of which was established at the time of issuance or purchase and is being amortized over the remaining life of the securities using the interest method.

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