Fair Value of Assets and Liabilities
Fair Value Hierarchy
The following is a description of the valuation methodologies and key inputs used to measure assets and liabilities recorded at fair value on a recurring basis. See Note 1 Summary of Significant Accounting Policies for more information on fair value measurements.
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Investment Securities Available-for-Sale
Level 1 investment securities are comprised of debt securities issued by the U.S. Treasury, as quoted prices were available, unadjusted, for identical securities in active markets. Level 2 investment securities were primarily comprised of debt securities issued by the Small Business Administration, states and municipalities, corporations, as well as mortgage-backed securities and collateralized mortgage obligations issued by government agencies and government-sponsored enterprises.
Fair values were estimated primarily by obtaining quoted prices for similar assets in active markets or through the use of pricing models. In cases where there may be limited or less transparent information provided by the Company’s third-party pricing service, fair value may be estimated by the use of secondary pricing services or through the use of non-binding third-party broker quotes.
Loans Held for Sale
The fair value of the Company’s residential mortgage loans held for sale was determined based on quoted prices for similar loans in active markets, and therefore, is classified as a Level 2 measurement.
Mortgage Servicing Rights
The Company estimates the fair value of mortgage servicing rights by using a discounted cash flow model to calculate the present value of estimated future net servicing income. The Company stratifies its mortgage servicing portfolio on the basis of loan type. The assumptions used in the discounted cash flow model are those that the Company believes market participants would use in estimating future net servicing income. Significant assumptions in the valuation of mortgage servicing rights include estimated loan repayment rates, the discount rate, servicing costs, and the timing of cash flows, among other factors. Mortgage servicing rights are classified as Level 3 measurements due to the use of significant unobservable inputs, as well as significant management judgment and estimation.
Other Assets
Other assets recorded at fair value on a recurring basis are primarily comprised of investments related to deferred compensation arrangements. Quoted prices for these investments, primarily in mutual funds, are available in active markets. Thus, the Company’s investments related to deferred compensation arrangements are classified as Level 1 measurements in the fair value hierarchy.
Derivative Financial Instruments
Derivative financial instruments recorded at fair value on a recurring basis are comprised of IRLCs, forward commitments, interest rate swap agreements, foreign exchange swaps, and Visa Class B to Class A shares conversion rate swap and makewhole agreements. The fair values of IRLCs are calculated based on the value of the underlying loan held for sale, which in turn is based on quoted prices for similar loans in the secondary market. However, this value is adjusted by a factor which considers the likelihood that the loan in a locked position will ultimately close. This factor, the closing ratio, is derived from the Bank’s internal data and is adjusted using significant management judgment. As such, IRLCs are classified as Level 3 measurements. Forward commitments are classified as Level 2 measurements as they are primarily based on quoted prices from the secondary market based on the settlement date of the contracts, interpolated or extrapolated, if necessary, to estimate a fair value as of the end of the reporting period.
The fair values of interest rate swap agreements are calculated using a discounted cash flow approach and utilize Level 2 observable inputs such as a market yield curve, effective date, maturity date, notional amount, and stated interest rate. Thus, the fair values of interest rate swaps are classified as a Level 2 measurement. The fair values of foreign exchange swaps are calculated using the Bank’s multi-currency accounting system which utilizes contract specific information such as currency, maturity date, contractual amount, and strike price, along with market data information such as the spot rates of specific currency and yield curves. Foreign exchange swaps are classified as Level 2 measurements because while they are valued using the Bank’s multi-currency accounting system, significant management judgment or estimation is not required. The fair value of the Visa Class B restricted shares to Class A unrestricted common shares conversion rate swap agreements represent the amount owed by the Company to the buyer of the Visa Class B shares as a result of a reduction of the conversion ratio subsequent to the sales date. As of December 31, 2025 and 2024, the conversion rate swap agreements were valued at zero as further reductions to the conversion rate were not reasonably estimable. The fair value of the makewhole agreements represents the amount owed by the Company to the buyer of the Visa Class B shares in the event Visa requires additional legal reserves to settle ongoing litigation. As of December 31, 2025, the makewhole agreements were valued at zero as the likelihood of the Company being required to make a payment to the buyer is not reasonably estimable by management. See Note 16 Derivative Financial Instruments for more information.
The Company is exposed to credit risk if borrowers or counterparties fail to perform. The Company seeks to minimize credit risk through credit approvals, limits, monitoring procedures, and collateral requirements. The Company generally enters into transactions with borrowers of high credit quality and counterparties that carry high quality credit ratings.
The table below presents the balances of assets and liabilities measured at fair value on a recurring basis as of December 31, 2025 and 2024:
(dollars in thousands)Quoted Prices in Active Markets for
Identical Assets or Liabilities
(Level 1)
Significant Other Observable Inputs
(Level 2)
Significant Unobservable Inputs
(Level 3)
Total
December 31, 2025
Assets:
Investment Securities Available-for-Sale
Debt Securities Issued by the U.S. Treasury and Government Agencies$119,223 $99,115 $— $218,338 
Debt Securities Issued by States and Political Subdivisions— 66,312 — 66,312 
Debt Securities Issued by U.S. Government-Sponsored Enterprises— 781 — 781 
Debt Securities Issued by Corporations— 735,643 — 735,643 
Collateralized Mortgage Obligations Issued by:
Residential - Government Agencies or Sponsored Enterprises— 1,488,382 — 1,488,382 
Commercial - Government Agencies or Sponsored Enterprises— 329,836 — 329,836 
Commercial - Non Agency— 60,645 — 60,645 
Total Collateralized Mortgage Obligations— 1,878,863 — 1,878,863 
Mortgage-Backed Securities:
Residential - Government Agencies or Sponsored Enterprises— 610,715 — 610,715 
Total Investment Securities Available-for-Sale119,223 3,391,429 — 3,510,652 
Loans Held for Sale— 4,369 — 4,369 
Mortgage Servicing Rights— — 551 551 
Deferred Compensation Plan Assets15,959 — — 15,959 
Derivatives 1
— 99,536 45 99,581 
Total Assets Measured at Fair Value on a Recurring Basis as of December 31, 2025$135,182 $3,495,334 $596 $3,631,112 
Liabilities:
Derivatives 1
$— $107,205 $— $107,205 
Total Liabilities Measured at Fair Value on a Recurring Basis as of December 31, 2025$— $107,205 $— $107,205 
December 31, 2024
Assets:
Investment Securities Available-for-Sale
Debt Securities Issued by the U.S. Treasury and Government Agencies$150,389 $98,683 $— $249,072 
Debt Securities Issued by States and Political Subdivisions— 63,859 — 63,859 
Debt Securities Issued by U.S. Government-Sponsored Enterprises— 1,464 — 1,464 
Debt Securities Issued by Corporations— 671,675 — 671,675 
Collateralized Mortgage Obligations Issued by:
Residential - Government Agencies or Sponsored Enterprises— 935,220 — 935,220 
Commercial - Government Agencies or Sponsored Enterprises— 283,474 — 283,474 
Total Collateralized Mortgage Obligations— 1,218,694 — 1,218,694 
Mortgage-Backed Securities Issued by:
Residential - Government Agencies or Sponsored Enterprises— 484,764 — 484,764 
Total Investment Securities Available-for-Sale150,389 2,539,139 — 2,689,528 
Loans Held for Sale— 2,150 — 2,150 
Mortgage Servicing Rights— — 647 647 
Deferred Compensation Plan Assets18,155 — — 18,155 
Derivatives 1
— 161,439 34 161,473 
Total Assets Measured at Fair Value on a Recurring Basis as of December 31, 2024$168,544 $2,702,728 $681 $2,871,953 
Liabilities:
Derivatives 1
$— $154,058 $— $154,058 
Total Liabilities Measured at Fair Value on a Recurring Basis as of December 31, 2024$— $154,058 $— $154,058 
1.The fair value of each class of derivatives is shown in Note 16 Derivative Financial Instruments.
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
The Company may be required periodically to measure certain assets and liabilities at fair value on a nonrecurring basis in accordance with GAAP. These adjustments to fair value usually result from the application of lower-of-cost-or-fair value accounting or impairment write-downs of individual assets. As of December 31, 2025 and 2024, there were no assets or liabilities with nonrecurring fair value adjustments. Additionally, there were no nonrecurring fair value adjustments during the years ended December 31, 2025 and 2024.
Fair Value Option
The following table reflects the difference between the aggregate fair value and the aggregate unpaid principal balance of the Company’s residential mortgage loans held for sale as of December 31, 2025 and 2024.
(dollars in thousands)Aggregate Fair ValueAggregate Unpaid PrincipalAggregate Fair Value Less Aggregate Unpaid Principal
December 31, 2025
Loans Held for Sale$4,369 $4,313 $56 
December 31, 2024
Loans Held for Sale$2,150 $2,109 $41 
Changes in the estimated fair value of residential mortgage loans held for sale are reported as a component of Mortgage Banking in the Company’s consolidated statements of income. For the years ended December 31, 2025 and 2024, the net gains or losses from the change in fair value of the Company’s residential mortgage loans held for sale were not material.
Financial Instruments Not Recorded at Fair Value on a Recurring Basis
The following presents the carrying amount, fair value, and placement in the fair value hierarchy of the Company’s financial instruments not recorded at fair value on a recurring basis as of December 31, 2025 and 2024. This table excludes financial instruments for which the carrying amount approximates fair value. For short-term financial assets such as cash and cash equivalents, the carrying amount is a reasonable estimate of fair value due to the relatively short time between the origination of the instrument and its expected realization. For non-marketable equity securities such as Federal Home Loan Bank of Des Moines and Federal Reserve Bank stock, the carrying amount is a reasonable estimate of fair value as these securities can only be redeemed or sold at their par value and only to the respective issuing government-supported institution or to another member institution. For financial liabilities such as noninterest-bearing demand, interest-bearing demand, and savings deposits, the carrying amount is a reasonable estimate of fair value due to these products having no stated maturity.
Fair Value Measurements
(dollars in thousands)Carrying AmountFair ValueQuoted Prices in Active Markets for
Identical Assets or Liabilities
(Level 1)
Significant Other Observable Inputs
(Level 2)
Significant Unobservable Inputs
(Level 3)
December 31, 2025
Financial Instruments - Assets
Investment Securities Held-to-Maturity$4,245,681 $3,651,966 $115,747 $3,536,219 $— 
Loans13,784,829 13,423,382 — — 13,423,382 
Financial Instruments - Liabilities
Time Deposits2,781,082 2,774,104 — 2,774,104 — 
Securities Sold Under Agreements to Repurchase50,000 51,407 — 51,407 — 
Other Debt 1
550,000 555,622 — 555,622 — 
December 31, 2024
Financial Instruments – Assets
Investment Securities Held-to-Maturity$4,618,543 $3,820,882 $116,941 $3,703,941 $— 
Loans13,777,756 12,908,626 — — 12,908,626 
Financial Instruments – Liabilities
Time Deposits3,059,575 3,050,583 — 3,050,583 — 
Securities Sold Under Agreements to Repurchase100,000 101,478 — 101,478 — 
Other Debt 1
550,000 538,808 — 538,808 — 
1.Excludes finance lease obligations.

Historical Timeline

Fiscal YearFiled
2025Feb 24, 2026Showing above
2024Mar 4, 2025
2023Feb 29, 2024
2022Mar 1, 2023
2021Mar 1, 2022
2020Mar 1, 2021
2019Mar 2, 2020
2018Mar 1, 2019
2017Feb 28, 2018
2016Feb 27, 2017
2015Feb 29, 2016

About Fair Value Disclosures

Fair value disclosures classify all assets and liabilities measured at fair value into a three-level hierarchy: Level 1 (quoted market prices), Level 2 (observable inputs like yield curves), and Level 3 (unobservable inputs requiring management estimates). The proportion of Level 3 assets directly reflects how much of the balance sheet depends on internal models rather than market evidence.

Key signals: a growing Level 3 balance relative to total fair-value assets increases valuation uncertainty and earnings volatility risk. Watch for transfers between levels — assets moving from Level 2 to Level 3 often signal deteriorating market liquidity. Unrealized gains and losses on Level 3 positions flow through earnings or other comprehensive income, so large swings deserve scrutiny. For financial institutions, examine the sensitivity disclosures that show how Level 3 valuations change under alternative assumptions. Compare the fair value of debt against its carrying amount to gauge hidden leverage.