The amortized cost and estimated fair values of investment securities available-for-sale at June 30, 2026 and December 31, 2025 are as follows:

​

​

​

The following tables show the gross unrealized losses and estimated fair value of investment securities available-for-sale for which an allowance for credit losses has not been recorded by category and length of time that securities have been in a continuous unrealized loss position at June 30, 2026, and December 31, 2025:

​

​

​

At June 30, 2026, 75 of the Company’s available-for-sale securities had unrealized losses totaling 9.4% of the individual securities’ amortized cost and 5.8% of the Company’s total amortized cost basis of the investment securities portfolio. At June 30, 2026, 55 of these 75 securities had been in a continuous loss position for over 12 months. At December 31, 2025, 67 of the Company’s available-for-sale securities had unrealized losses totaling 9.5% of the individual securities’ amortized cost basis and 5.3% of the Company’s total amortized cost basis of the investment securities portfolio.  At December 31, 2025, 61 of the 67 securities had been in a continuous loss position over 12 months.  The unrealized losses of these securities are believed to be caused by market interest rate increases and changing market conditions and the Company does not intend to sell the securities, and it is not likely to be required to sell these securities prior to maturity. Management has determined that the declines in the fair value of these securities are not attributable to credit losses.

The majority of the Company’s securities in an unrealized loss position are issued by U.S. government agencies or U.S. government-sponsored enterprises.  These securities carry the implicit guarantee of the U.S. government and have a long history of zero credit loss. No allowance for credit losses was recorded for available-for-sale securities at June 30, 2026 or December 31, 2025.  

The amortized cost and estimated fair value of securities classified as available-for-sale at June 30, 2026, by contractual maturity, are shown in the table below. Securities are classified according to their contractual maturities without consideration of principal amortization, potential prepayments or call options. The expected maturity of a security may differ from its contractual maturity because of the exercise of call options and potential paydowns. Accordingly, actual maturities may differ from contractual maturities.

​

​

There were no sales of available-for-sale securities during the three and six months ended June 30, 2026 and 2025.