v3.26.3
Borrowing Arrangements
 9 Months Ended
Sep. 30, 2026
Debt Disclosure [Abstract]  
Borrowing Arrangements Borrowing Arrangements
Information related to borrowings is provided in the table below (dollars in thousands):
September 30, 2026December 31, 2025
Other borrowings:
Balance at end of period$894,605 $208,657 
Average amount outstanding during the period (1)
437,085 107,989 
Maximum amount outstanding during the period (2)
894,605 297,359 
Weighted average interest rate during the period (3)
3.6 %4.5 %
   Interest rate at end of period (4)
3.7 %3.6 %
FHLB borrowings:
Balance at end of period$800,750 $211,136 
Average amount outstanding during the period (1)
622,465 372,342 
Maximum amount outstanding during the period (2)
995,848 651,782 
Weighted average interest rate during the period (3)
3.9 %3.7 %
Interest rate at end of period (4)
4.2 %2.9 %
(1)The average amount outstanding during the period was computed by dividing the total daily outstanding principal balances by the number of days in the period.
(2)The maximum amount outstanding at any month-end during the period.
(3)The weighted average interest rate during the period was computed by dividing the actual interest expense (annualized for interim periods) by the average amount outstanding during the period. The weighted average interest rate on FHLB borrowings and other borrowings includes the effect of interest rate swaps.
(4)The interest rate includes the effect of interest rate swaps.

Maturities of the obligations associated with our borrowing arrangements based on scheduled repayments at September 30, 2026 are as follows (in thousands):
Payments Due by Period
Less than
1 Year		1-2 Years2-3 Years3-4 Years4-5 YearsThereafterTotal
Other borrowings$894,605 $— $— $— $— $— $894,605 
FHLB borrowings800,401 349 — — — — 800,750 
Total obligations$1,695,006 $349 $— $— $— $— $1,695,355 

Other borrowings may include federal funds purchased, repurchase agreements and borrowings from the Federal Reserve through the FRDW. Southside Bank has three unsecured lines of credit for the purchase of overnight federal funds at prevailing rates with Frost Bank, Amegy Bank and TIB – The Independent Bankers Bank for $40.0 million, $25.0 million and $15.0 million, respectively. There were no federal funds purchased at September 30, 2026 or December 31, 2025.  To provide more liquidity in response to economic conditions in recent years, the Federal Reserve has encouraged broader use of the discount window. At September 30, 2026, the amount of additional funding the Bank could obtain from the FRDW, collateralized by securities, was approximately $12.9 million. There were $835.0 million and $110.0 million in borrowings from the FRDW at September 30, 2026 and December 31, 2025, respectively. Southside Bank has a $5.0 million line of credit with Frost Bank to be used to issue letters of credit, and at September 30, 2026, the line had one outstanding letter of credit for $155,000. Southside Bank currently has four outstanding letters of credit from FHLB held as collateral for loans totaling $19.3 million.
Southside Bank enters into sales of securities under repurchase agreements. These repurchase agreements totaled $59.6 million at September 30, 2026, and $98.7 million at December 31, 2025, and had maturities of less than one year.  Repurchase agreements are secured by investment and MBS and are stated at the amount of cash received in connection with the transaction.
FHLB borrowings represent borrowings with fixed interest rates ranging from 3.88% to 5.28% (including the effect of interest rate swaps) and with remaining maturities of one day to 1.8 years at September 30, 2026.  FHLB borrowings may be
collateralized by FHLB stock, nonspecified loans and/or securities. At September 30, 2026, the amount of additional funding Southside Bank could obtain from FHLB was approximately $1.77 billion, net of FHLB stock purchases required.