SouthState Bank Corp

Note 1 — Basis of Presentation

The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America, otherwise referred to as US GAAP, for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and disclosures required for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the three months ended March 31, 2026 are not necessarily indicative of the results that may be expected for the year ending December 31, 2026.

The consolidated balance sheet at December 31, 2025 has been derived from the audited financial statements as of that date but does not include all of the information and disclosures required by US GAAP for complete financial statements.

Note 2 — Summary of Significant Accounting Policies

The information contained in the consolidated financial statements and accompanying notes included in our Annual Report on Form 10-K for the year ended December 31, 2025, as filed with the Securities and Exchange Commission (the “SEC”) on February 20, 2026, should be referenced when reading these unaudited consolidated financial statements. Unless otherwise mentioned or unless the context requires otherwise, references herein to “SouthState,” the “Company,” “we,” “us,” “our” or similar references mean SouthState Bank Corporation and its consolidated subsidiaries. References to the “Bank” or “SouthState Bank” means SouthState Bank Corporation’s wholly owned subsidiary, South State Bank, National Association.

Loans

Loans that management has originated and has the intent and ability to hold for the foreseeable future or until maturity or pay off generally are reported at their unpaid principal balances, less unearned income and net of any deferred loan fees and costs, including unamortized fair value discount or premium. Unearned income on installment loans is recognized as income over the terms of the loans by methods that generally approximate the interest method. Interest on other loans is calculated by using the simple interest method on daily balances of the principal amount outstanding. If the loan is prepaid, the remaining unamortized fees and costs are charged or credited to interest income. Amortization ceases for non-accrual loans.

We place loans on nonaccrual once reasonable doubt exists about the collectability of all principal and interest due. Generally, this occurs when principal or interest is 90 days or more past due, unless the loan is well secured and in the process of collection and excludes factored receivables. For factored receivables, which are commercial trade credits rather than promissory notes, the Company’s practice, in most cases, is to charge-off unpaid recourse receivables when they become 240 days past due from the invoice due date and the non-recourse receivables when they become 240 days past due from the statement due date. Past due status is based on the contractual terms of the loan. In all cases, loans are placed on non-accrual or charged-off at an earlier date if collection of principal or interest is considered doubtful.

Allowance for Credit Losses (“ACL”) – Investment Securities

Management monitors the held to maturity securities portfolio to determine whether a valuation account should be recorded. Management evaluates impairment where there has been a decline in fair value below the amortized cost basis of a security to determine whether there is a credit loss associated with the decline in fair value at least quarterly, and more frequently when economic or market concerns warrant such evaluation. The Company’s methodology on how the ACL is calculated is disclosed in Note 1 — Summary of Significant Accounting Policies, under the “ACL – Investment Securities” section, of our Annual Report for the year ended December 31, 2025. As of March 31, 2026 and December 31, 2025, the Company had$2.0 billion of held to maturity securities and no related valuation account.

The Company follows its nonaccrual policy by reversing interest income in the income statement when the Company determines the interest for held to maturity securities is uncollectible. Therefore, management excludes the accrued interest receivable balance from the amortized cost basis in measuring expected credit losses on the investment securities and does not record an allowance for credit losses on accrued interest receivable. As of March 31, 2026 and December 31, 2025, the accrued interest receivables for all investment securities recorded in Other Assets were$42.0 million and $38.9 million, respectively.

ACL – Loans and Certain Off-Balance-Sheet Credit Exposures

The ACL for loans held for investment reflects management’s estimate of credit losses that will result from the inability of our borrowers to make required loan payments. The Company makes adjustments to the ACL by recording a provision for or recovery of credit losses through earnings. Loans charged off are recorded as reductions to the ACL on the balance sheet and subsequent recoveries of loan charge-offs are recorded as increases to the ACL when they are received.

Management estimates the allowance balance using relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Historical credit loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current loan-specific risk characteristics such as differences in underwriting standards, portfolio mix, credit quality, or term, as well as for changes in macroeconomic conditions, such as changes in unemployment rates, gross domestic product, property values, or other relevant factors. Acquired portfolios may be supported by separate credit models using loss histories relevant to those portfolios. The Company’s estimate of its ACL involves a high degree of judgment; therefore, management’s process for determining expected losses may result in a range of expected losses. The Company’s ACL recorded in the balance sheet reflects management’s best estimate within the range of expected losses. The Company recognizes in net income the amount needed to adjust the ACL for management’s current estimate of expected losses.

The Company generally uses an eight-quarter forecast period, based on a single forecast scenario or a blend of multiple forecast scenarios, using variables management believes are most relevant to each portfolio segment. For periods beyond which management is able to develop reasonable and supportable forecasts, the Company reverts to the average historical loss rate, reflecting historical default probabilities and loss severities, using a reversion speed that approximates four quarters. The forecast period and scenarios used are reviewed on a quarterly basis and may be adjusted based on management's view of the current economic conditions and level of predictability the forecast can provide.

While quantitative allowance methodologies strive to reflect all risk factors, any estimate involves assumptions and uncertainties resulting in some level of imprecision. Imprecision exists in the estimation process due to the inherent time lag between obtaining information, performing the calculation, as well as variations between estimates and actual outcomes. As a result, amounts determined under the methodologies described above are adjusted by management to consider the potential impact of other qualitative factors not captured in the quantitative model adjustments which include, but are not limited to, the following: imprecision or conditions not captured in economic scenario assumptions, emerging risks related to either changes in the internal or external environment that are affecting specific portfolios, trends in loan or portfolio level credit metrics not captured in quantitative modeling, or model imprecision adjustments. The consideration of these items results in adjustments to allowance amounts included in the Company’s allowance for credit losses for each loan portfolio.

The Company’s ACL is calculated using collectively evaluated and individually evaluated loans. Even though portions of the allowance may be allocated to specific loans or pools of loans, the entire allowance is available for any credit that, in management’s judgment, should be charged off.

When a loan no longer shares similar risk characteristics with its segment, the asset is assessed to determine

whether it should be included in another pool or should be individually evaluated. The Company’s threshold for individually evaluated loans includes all non-accrual loans with a net book balance in excess of $1.0 million. During an acquisition, the Company may identify accruing loans that do not share similar risk characteristics as pooled loans and therefore be individually evaluated. These loans are identified during the credit review process, have unique characteristics or circumstances, and identified as purchased credit-deteriorated (“PCD”) loans, though the loans may remain on accrual status. Management will monitor the credit environment and make adjustments to this threshold in the future if warranted. Based on the threshold above, consumer financial assets will generally remain in pools unless they meet the dollar threshold. The expected credit losses on individually evaluated loans will be estimated based on discounted cash flow analysis unless the loan meets the criteria for use of the fair value of collateral, either by virtue of an expected foreclosure or through meeting the definition of collateral-dependent. Accruing individually evaluated loans will remain in this status until 1) the loan is upgraded to pass, or 2) the loan is downgraded to non-accrual and follow the non-accrual individually evaluated process. Financial assets that have been individually evaluated can be returned to a pool for purposes of estimating the expected credit loss insofar as their credit profile improves and that the repayment terms were not considered to be unique to the asset.

Management measures expected credit losses over the contractual term of a loan. When determining the contractual term, the Company considers expected prepayments but is precluded from considering expected extensions, renewals, or modifications. Loans modified to a borrower experiencing financial difficulty are reviewed by the Bank to determine if an interest rate reduction, a term extension, an other-than-insignificant payment delay, a principal forgiveness, or any combination of these has occurred.

The ACL includes expected losses from modifications of receivables to borrowers experiencing financial difficulty. Losses on modifications of non-accrual loans over$1 million to borrowers experiencing financial difficulty are estimated on an individual basis. Because the effect of the remainder of modifications made to borrowers experiencing financial difficulty is already incorporated into the measurement methodologies used to estimate the allowance, they are accounted for as pooled loans.

PCD assets are defined as acquired individual financial assets (or acquired groups of financial assets with similar risk characteristics) that, as of the date of acquisition, have experienced a more-than-insignificant deterioration in credit quality since origination, as determined by the Company’s assessment. The Company records acquired PCD loans by adding the expected credit losses (i.e., allowance for credit losses) to the purchase price of the financial assets rather than recording through the provision for credit losses in the income statement. The expected credit loss, as of the acquisition day, of a PCD loan is added to the allowance for credit losses. The non-credit discount or premium is the difference between the unpaid principal balance and the amortized cost basis as of the acquisition date. Subsequent to the acquisition date, the change in the ACL on PCD loans is recognized through the Provision for Credit Losses in the Consolidated Statements of Income. The non-credit discount or premium is accreted or amortized, respectively, into interest income over the remaining life of the PCD loan on a level-yield basis.

The Company follows its nonaccrual policy by reversing contractual interest income in the income statement when the Company places a loan on nonaccrual status. Therefore, management excludes the accrued interest receivable balance from the amortized cost basis in measuring expected credit losses on the portfolio and does not record an allowance for credit losses on accrued interest receivable. As of March 31, 2026 and December 31, 2025, the accrued interest receivables for loans recorded in Other Assets were $189.2 million and $186.5 million, respectively.

The Company has a variety of assets that have a component that qualifies as an off-balance sheet exposure. These primarily include undrawn portions of revolving lines of credit and standby letters of credit. The expected losses associated with these exposures within the unfunded portion of the expected credit loss are recorded as a liability on the balance sheet. Management has determined that a majority of the Company’s off-balance sheet credit exposures are not unconditionally cancellable. Management completes funding studies based on internal historical data to estimate the percentage of unfunded loan commitments that will ultimately be funded to calculate the reserve for unfunded commitments. Management applies this funding rate, along with the loss factor rate determined for each pooled loan segment, to unfunded loan commitments, excluding unconditionally cancellable exposures and letters of credit, to arrive at the reserve for unfunded loan commitments. As of March 31, 2026 and December 31, 2025, the liabilities recorded for expected credit losses on unfunded commitments were$69.2 million and $69.6 million, respectively. The current adjustment to the reserve for unfunded commitments is recognized through the Provision for Credit Losses in the Consolidated Statements of Income.

The methodology used in the estimation of the allowance, which is performed at least quarterly, is designed to be dynamic and responsive to changes in portfolio credit quality and forecasted economic conditions. Changes are reflected in the pool-basis allowance and in reserves assigned on an individual basis as the collectability of classified loans is evaluated with new information. As the Company’s portfolio has matured, historical loss ratios have been closely monitored. The review of the appropriateness of the allowance is performed by executive management and presented to the Audit and Risk Committees of the Board of Directors for their review. The committees report to the board as part of the board's quarterly review of the Company’s consolidated financial statements.

Reclassification and Correction

Certain amounts previously reported have been reclassified to conform to the current quarter’s presentation. Such reclassifications had no effect on net income and shareholders’ equity.

Note 3 — Recent Accounting and Regulatory Pronouncements

Accounting Standards Adopted

In November 2023, the FASB issued ASU No. 2023-07,Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, to improve disclosures about a public entity’s reportable segments and address requests from investors and other allocators of capital for additional, more detailed information about a reportable segment’s expenses. Segment information gives investors an understanding of overall performance and is key to assessing potential future cash flows. In addition, although information about a segment’s revenue and measure of profit or loss is disclosed in an entity’s financial statements, there is limited information disclosed about a segment’s expenses. The key amendments include annual and interim disclosures of significant expenses and other segment items that are regularly provided to the chief operating decision maker and included within each reported measure of profit or loss, as well as any other key measure of performance used for segment management decisions. This ASU also requires disclosure of key profitability measures used in assessing performance and how to allocate resources. The amendments in this ASU are effective for fiscal years beginning after December 15, 2023, and for interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. The Company adopted ASU 2023-07 using the retrospective approach. Aside from the new disclosures required by ASU No. 2023-07, the ASU did not have a material impact on our consolidated financial statements. See Note 22 — Segment Reporting for further disclosure.

In December 2023, the FASB issued ASU No. 2023-09,Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which aims to address requests for improved income tax disclosures from investors, lenders, creditors and other allocators of capital (collectively, “investors”) that use the financial statements to make capital allocation decisions. The amendments in this ASU address investor requests for more transparency about income tax information, including jurisdictional information, by requiring consistent categories and greater disaggregation of information in both the rate reconciliation and income taxes paid disaggregated by jurisdiction. The amendments are effective for annual periods beginning after December 15, 2024. The adoption of this ASU did not have a material impact on its financial statements beyond the additional required disclosures.

Issued But Not Yet Adopted Accounting Standards

In December 2026, the FASB issued Accounting Standards Update (ASU) No. 2025-08,Financial Instruments—Credit Losses (Topic 326): Purchased Loans, which expands the population of acquired financial assets subject to the gross-up approach for accounting for credit losses. This ASU introduces the concept of purchased seasoned loans and requires certain acquired loans (excluding credit cards) that have not experienced significant credit deterioration since origination to be accounted for using the gross-up approach, addressing longstanding stakeholder concerns regarding the complexity and reduced comparability under previous guidance that distinguished between PCD and non-PCD assets. The amendments clarify initial and subsequent measurement, including recognition of an allowance for credit losses at acquisition with an offsetting gross-up to the purchase price, and require purchased seasoned loans to follow the same interest income recognition model as originated financial assets. The ASU also updates disclosure requirements to include separate presentation of the initial allowance recognized for purchased seasoned loans. The amendments are effective for annual reporting periods beginning after December 15, 2026, and for interim reporting periods within those annual periods, with early adoption permitted. The amendments must be applied prospectively to loans acquired on or after the adoption date. In the event of future acquisitions, this ASU will likely have a material impact on the Company’s financial statements.

In September 2025, the FASB issued Accounting Standards Update (ASU) No. 2025-06,Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software, seeking to update the guidance on accounting for software. This ASU addresses stakeholder and investor concerns on the challenges of applying current internal-use software accounting requirements that do not specifically address software developed using modern incremental and iterative methods, which has led to diversity in practice in determining when to begin capitalizing software costs. The ASU removes all references to a prescriptive and sequential software development method. The amendments require an entity to start capitalizing software costs when management has authorized and committed to funding the software project, and it is probable that the project will be completed and the software will be used to perform the function intended. The amendments in the ASU are effective for annual reporting periods beginning after December 15, 2027, and for interim reporting periods beginning after December 15, 2027. The Company does not anticipate this ASU will have a material impact on its financial statements.

In November 2024, the FASB has issued Accounting Standards Update ASU No. 2024-03,Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, to provide investors with more decision-useful information about a public business entity’s expense by improving disclosures on income statement expenses. The amendments in the ASU are effective for public business entities only for annual reporting periods beginning after December 15, 2026, and for interim reporting periods beginning after December 15, 2027. The Company does not anticipate this ASU will have a material impact on its financial statements.

Note 4 — Securities

Investment Securities

The following is the amortized cost and fair value of investment securities held to maturity:

The following is the amortized cost and fair value of investment securities available for sale:

The following is the amortized cost and carrying value of other investment securities:

The Company’s other investment securities consist of non-marketable equity and other securities that have no readily determinable market value. Accordingly, when evaluating these securities for impairment, management considers the ultimate recoverability of the par value rather than recognizing temporary declines in value. As of March 31, 2026, the Company has determined that there wasno impairment on its other investment securities.

The amortized cost and fair value of debt securities at March 31, 2026 by contractual maturity are detailed below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without prepayment penalties.

During the three months ended March 31, 2026, there wereno sales of securities available for sale. During the three months ended March 31, 2025, the Company sold a portion of the available for sale investment securities acquired from Independent and recognizedno gain or loss on these investment securities as each security was marked to fair value at the acquisition date. In addition to the sale of the investment securities acquired from Independent, the Company executed an investment portfolio restructuring and sold$1.8 billion of available for sale investment securities from its existing investment securities portfolio.

The following table provides additional details of the available for sale investment securities sold during the three months ended March 31, 2025:

There wereno sales of held to maturity securities during the three months ended March 31, 2026 or March 31, 2025.

The Company had 1,135 securities with gross unrealized losses at March 31, 2026. Information pertaining to our securities with gross unrealized losses at March 31, 2026, and December 31, 2025, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position is as follows:

The Company’s valuation methodology for securities impairment is disclosed in Note 1 — Summary of Significant Accounting Policies, under “Investment Securities” section, of our Annual Report on Form 10-K for the year ended December 31, 2025. All debt securities in an unrealized loss position as of March 31, 2026 continue to perform as scheduled and management does not believe there is a credit loss or a provision for credit losses is necessary. Management does not currently intend to sell the securities within the portfolio, and it is not more-likely-than-not that the Company will be required to sell the debt securities. See Note 2 — Summary of Significant Accounting Policies for further discussion.

At March 31, 2026, investment securities with a market value of $5.0 billion and a carrying value of $5.3 billion were pledged to secure public funds deposits and for other purposes required and permitted by law (excluding securities pledged to secure repurchase agreement disclosed in Note 20 — Short-Term Borrowings, under the “Securities Sold Under Agreements to Repurchase (“Repurchase agreements”)” section). Of the$5.3 billion carrying value of investment securities pledged, $5.2 billion were pledged to secure public funds deposits, $26.7 million were pledged to secure FHLB advances, and $80.8 million were pledged to secure interest rate swap positions with correspondent banks. At December 31, 2025, investment securities with a market value of$5.2 billion and a carrying value of $5.5 billion were pledged to secure public funds deposits and for other purposes required and permitted by law. Of the$5.5 billion carrying value of investment securities pledged, $5.2 billion were pledged to secure public funds deposits, $182.2 million were pledged to secure FHLB advances and $83.3 million were pledged to secure interest rate swap positions with correspondent banks.

Trading Securities

At March 31, 2026, and December 31, 2025, trading securities, at estimated fair value, were as follows:

Net gains on trading securities for the three months ended March 31, 2026 and 2025 were as follows:

Note 5 — Loans

The following is a summary of total loans:

The above table reflects the loan portfolio at the amortized cost basis for the periods ended March 31, 2026 and December 31, 2025, to include net deferred costs of $97.4 million and $97.0 million, respectively, and unamortized discount total related to loans acquired of $219.0 million and $259.5 million, respectively. Accrued interest receivables of$189.2 million and $186.5 million, respectively, are accounted for separately and reported in other assets for the periods March 31, 2026 and December 31, 2025.

As part of the ongoing monitoring of the credit quality of our loan portfolio, management tracks certain credit quality indicators, including trends related to (i) the level of classified loans, (ii) net charge-offs, (iii) non-performing loans (see details below), and (iv) the general economic conditions of the markets that we serve.

The Company utilizes a risk grading matrix to assign a risk grade to each commercial loan. Classified loans are assessed at a minimum of every six months. A description of the general characteristics of the risk grades is as follows:

Construction and land development loans in the following table are on commercial and speculative real estate. Consumer owner-occupied loans are collateralized by 1-4 family owner-occupied properties with a business intent.

The following table presents the credit risk profile by risk grade of commercial loans by origination year as of and for the period ending March 31, 2026:

The following table presents the credit risk profile by risk grade of commercial loans by origination year as of and for the period ending December 31, 2025:

For the consumer segment, delinquency of a loan is determined by past due status. Consumer loans are automatically placed on nonaccrual status once the loan is 90 days past due. Construction and land development loans are on 1-4 family residential properties and lots.

The following table presents the credit risk profile by past due status of consumer loans by origination year as of and for the period ending March 31, 2026:

The following table presents the credit risk profile by past due status of total loans by origination year as of and for the period ending March 31, 2026:

The following table presents the credit risk profile by past due status of consumer loans by origination year as of and for the period ending December 31, 2025: