American Coastal Insurance Corporation ACIC Form 10-Q filing Q1 FY2026

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AMERICAN COASTAL INSURANCE CORPORATION

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

See accompanying Notes to Unaudited Condensed Consolidated Financial Statements.

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See accompanying Notes to Unaudited Condensed Consolidated Financial Statements.

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See accompanying Notes to Unaudited Condensed Consolidated Financial Statements.

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See accompanying Notes to Unaudited Condensed Consolidated Financial Statements.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

ORGANIZATION, CONSOLIDATION AND PRESENTATION

(a)

Business

American Coastal Insurance Corporation (referred to in this document as we, our, us, the Company or ACIC) is a property and casualty insurance holding company that sources, writes and services residential commercial property insurance policies using a network of agents and one wholly-owned insurance subsidiary, American Coastal Insurance Company (AmCoastal). The Company also previously wrote insurance through Interboro Insurance Company (IIC); however, on April 1, 2025, the Company completed the sale of IIC. The details of this transaction are described below.

The Company's other subsidiaries include Skyway Underwriters, LLC, a managing general agent that provides policy and claims administration, underwriting, technological and distribution services to the Company's insurance company; AmCo Holding Company, LLC (AmCo), which is a holding company subsidiary that consolidates its respective insurance company; BlueLine Cayman Holdings (BlueLine), which reinsures portfolios of excess and surplus policies; and Shoreline Re, which provides a portion of the reinsurance protection purchased by the Company's insurance subsidiary where management deems prudent. The Company also has several subsidiaries in run-off including United Insurance Management, L.C. (UIM), a managing general agent; Skyway Claims Services, LLC (SCS), which previously provided claims adjusting services to the Company's insurance companies; and Skyway Reinsurance Services, LLC, which previously provided reinsurance brokerage services for the Company's insurance subsidiaries.

The Company has also formed ACES Specialty Insurance Company, an Arizona domiciled entity, that as of March 31, 2026 is awaiting approval of its Certificate of Authority and has not commenced operations.

On May 9, 2024, the Company entered into a Stock Purchase Agreement (the "Sale Agreement") with Forza Insurance Holdings, LLC (Forza) in which the Company agreed to sell and Forza agreed to acquire 100% of the issued and outstanding stock of IIC. Forza’s application to acquire IIC was approved by the New York Department of Financial Services (NYDFS) on February 13, 2025 and the sale closed on April 1, 2025. The aggregate purchase price for the shares was equal to IIC's shareholders' equity under U.S. generally accepted accounting principles (GAAP) on the closing date. IIC results of operations and assets and liabilities are captured within discontinued operations and are discussed in Note 3 of the Notes to Unaudited Condensed Consolidated Financial Statements below.

The Company's primary product is commercial residential property insurance in Florida, and the Company conducts operations under one reportable segment.

(b)

Consolidation and Presentation

The Company prepares its unaudited condensed consolidated interim financial statements in conformity with GAAP. The Company has condensed or omitted certain information and footnote disclosures normally included in the annual consolidated financial statements presented in accordance with GAAP. In management's opinion, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, including normal recurring items, considered necessary for a fair presentation of interim periods. The Company includes all of its subsidiaries in its consolidated financial statements, eliminating intercompany balances and transactions during consolidation. As described in Note 3, the Company's former subsidiary, IIC, qualified as discontinued operations. The Company's unaudited condensed consolidated interim financial statements and footnotes should be read in conjunction with the Company's consolidated financial statements and footnotes in the Company's Annual Report on Form 10-K for the year ended December 31, 2025.

While preparing the Company's unaudited condensed consolidated financial statements, the Company makes estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the unaudited condensed consolidated financial statements, as well as reported amounts of revenues and expenses during the reporting period. Accordingly, actual results could differ from those estimates. Reported amounts that require the Company to make extensive

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

use of estimates include its reserves for unpaid losses and loss adjustment expenses, investments and goodwill. Except for the captions on the Company's Unaudited Condensed Consolidated Balance Sheets and Unaudited Condensed Consolidated Statements of Comprehensive Income, the Company generally uses the term loss(es) to collectively refer to both loss and loss adjustment expenses.

The Company's results of operations and cash flows as of the end of the interim periods reported herein do not necessarily indicate the Company's results for the remainder of the year or for any other future period.

Operating segments are components of the Company's business about which separate financial information is available and evaluated by the Company's chief operating decision maker (CODM) in decisions regarding resource allocations and financial performance assessments. Generally, financial information is required to be reported on the basis that it is used internally for evaluating segment performance and deciding how to allocate resources to each segment. Segments are determined based on differences in products, internal reporting, and how operational decisions are made.

The Company's CODM is its President and Chief Executive Officer (CEO). The CODM uses net income that is also reported on the Consolidated Statements of Comprehensive Income to make decisions on how to allocate resources, for example deciding whether to reinvest profits for items such as product development or acquisitions, or whether to pay dividends. Net income is used to monitor budget versus actual results. Net income is also used in competitive analysis by benchmarking against the Company's peers. This analysis is used in assessing performance of the Company's operating segment and in establishing targets for management.

In addition, the Company's measure of segment assets is reported on the Consolidated Balance Sheets as total assets. The accounting policies of the Company's operating segment are the same as those described in the Company's summary of significant accounting policies in the Company's Annual Report on Form 10-K for the year ended December 31, 2025. Revenue, profit or loss and significant segment expenses can be seen on the Consolidated Statements of Comprehensive Income. Additional reconciliation of certain expenses can be seen within Note 12, below.

SIGNIFICANT ACCOUNTING POLICIES

(a) Changes to Significant Accounting Policies

There have been no changes to the Company's significant accounting policies as reported in its Annual Report on Form 10-K for the year ended December 31, 2025.

(b) Pending Accounting Pronouncements

In November 2024, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. This update requires disaggregated disclosure of income statement expenses for entities. The ASU does not change the expense captions an entity presents on the face of the income statement; rather, it requires disaggregation of certain expense captions into specified categories in disclosures within the footnotes to the financial statements. ASU 2024-03 is effective for all entities for fiscal years beginning after December 15, 2026 and interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. The Company is assessing the impact of this new accounting standard on its consolidated financial statements and related disclosures.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

DISCONTINUED OPERATIONS

On May 9, 2024, the Company entered into the Sale Agreement with Forza in which ACIC agreed to sell and Forza agreed to acquire 100% of the issued and outstanding stock of IIC. Forza’s application to acquire IIC was approved by the NYDFS on February 13, 2025 and the sale closed on April 1, 2025. The Company received cash proceeds totaling $25,679,000 from the sale resulting in a loss on disposal of $247,000, net of tax impact. The Company also recognized a $1,348,000 loss, net of tax impact, on IIC's fixed maturity portfolio, which was included in accumulated other comprehensive loss on the Company's Consolidated Balance Sheets prior to the sale. The total tax benefit related to the sale and realized loss on fixed maturity portfolio was $528,000.

The results from IIC's discontinued operations for the three months ended March 31, 2025 are presented below.

IIC Results from Discontinued Operations

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

The major classes of IIC assets and liabilities transferred as a result of the sale as of the date of sale are presented below.

IIC Major Classes of Assets and Liabilities Sold and Disposed

There were no non-cash transactions during the three months ended March 31, 2025.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

INVESTMENTS

The following table details fixed-maturity available-for-sale securities, by major investment category, at March 31, 2026 and December 31, 2025:

Equity securities are summarized as follows:

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

When the Company sells investments, the Company calculates the gain or loss realized on the sale by comparing the sales price (fair value) to the cost or adjusted/amortized cost of the security sold. The Company determines the cost or adjusted/amortized cost of the security sold using the specific-identification method. The following table details the Company's realized gains (losses) by major investment category for the three months ended March 31, 2026 and 2025, respectively:

(1) Fair value at sale includes maturities and paydowns executed at par value.

The table below summarizes the Company's fixed maturities at March 31, 2026 by contractual maturity period. Actual results may differ, as issuers may have the right to call or prepay obligations, with or without penalties, prior to the contractual maturities of those obligations.

The following table summarizes net investment income by major investment category:

Portfolio Monitoring

The Company has a quarterly portfolio monitoring process to identify and evaluate each fixed-income security whose carrying value may be impaired as a result of a credit loss. For each fixed-income security in an unrealized loss position, if the Company

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

determines that it intends to sell the security or that it is more likely than not that it will be required to sell the security before recovery of the cost or amortized cost basis for reasons such as liquidity needs, contractual or regulatory requirements, the security's entire decline in fair value is recorded in earnings.

If management decides not to sell the fixed-income security and it is more likely than not that the Company will not be required to sell the fixed-income security before recovery of its amortized cost basis, the Company evaluates whether the decline in fair value has resulted from credit losses or other factors. This is typically indicated by a change in the rating of the security assigned by a rating agency, and any adverse conditions specifically related to the security or industry, among other factors. If the assessment indicates that a credit loss may exist, the present value of cash flows expected to be collected from the security is compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses will be recorded in earnings. Credit loss is limited to the difference between a security's amortized cost basis and its fair value. Any additional impairment not recorded through an allowance for credit losses is recognized in other comprehensive income (loss).

During the three months ended March 31, 2026, the Company determined that none of its fixed-income securities shown in the table below that are in an unrealized loss position have declines in fair value that are reflected as a result of credit losses. Therefore, no credit loss allowance was recorded at March 31, 2026. The issuers of the Company's debt security investments continue to make interest payments on a timely basis. The Company does not intend to sell, nor is it likely that it will be required to sell the debt securities before it recovers the amortized cost basis. Equity securities are reported at fair value with changes in fair value recognized in the valuation of equity investments.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

The following table presents an aging of the Company's unrealized investment losses by investment class:

(1) This amount represents the actual number of discrete securities, not the number of shares or units of those securities. The numbers are not presented in thousands.

Fair Value Measurement

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The hierarchy for inputs used in determining fair value maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that observable inputs be used when available. Assets and liabilities recorded on the Company's Unaudited Condensed Consolidated Balance Sheets at fair value are categorized in the fair value hierarchy based on the observability of inputs to the valuation techniques as follows:

Level 1: Assets and liabilities whose values are based on unadjusted quoted prices for identical assets or liabilities in an active market that the Company can access.

Level 2: Assets and liabilities whose values are based on the following:

(a) Quoted prices for similar assets or liabilities in active markets;

(b) Quoted prices for identical or similar assets or liabilities in markets that are not active; or

(c) Valuation models whose inputs are observable, directly or indirectly, for substantially the full term of the asset or liability.

Level 3: Assets and liabilities whose values are based on prices or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement. Unobservable inputs reflect the Company's estimates of the assumptions that market participants would use in valuing the assets and liabilities.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

The Company estimates the fair value of its investments using the closing prices on the last business day of the reporting period, obtained from active markets such as the NYSE, Nasdaq and NYSE American. For securities for which quoted prices in active markets are unavailable, the Company uses a third-party pricing service that utilizes quoted prices in active markets for similar instruments, benchmark interest rates, broker quotes and other relevant inputs to estimate the fair value of those securities for which quoted prices are unavailable. The Company's estimates of fair value reflect the interest rate environment that existed as of the close of business on March 31, 2026 and December 31, 2025. Changes in interest rates subsequent to March 31, 2026 may affect the fair value of the Company's investments.

The fair value of the Company's fixed maturities is initially calculated by a third-party pricing service. Valuation service providers typically obtain data about market transactions and other key valuation model inputs from multiple sources and, through the use of proprietary models, produce valuation information in the form of a single fair value for individual fixed-income and other securities for which a fair value has been requested. The inputs used by the valuation service providers include, but are not limited to, market prices from recently completed transactions and transactions of comparable securities, interest rate yield curves, credit spreads, liquidity spreads, currency rates and other information, as applicable. Credit and liquidity spreads are typically implied from completed transactions and transactions of comparable securities. Valuation service providers also use proprietary discounted cash flow models that are widely accepted in the financial services industry and similar to those used by other market participants to value the same financial information. The valuation models take into account, among other things, market observable information as of the measurement date, as described above, as well as the specific attributes of the security being valued, including its term, interest rate, credit rating, industry sector and, where applicable, collateral quality and other issue or issuer specific information. Executing valuation models effectively requires seasoned professional judgment and experience.

Any change in the estimated fair value of the Company's fixed-income securities would impact the amount of unrealized gain or loss the Company has recorded, which could change the amount the Company has recorded for its investments and other comprehensive income (loss) on its Unaudited Condensed Consolidated Balance Sheets as of March 31, 2026.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

The following table presents the fair value of the Company's financial instruments measured on a recurring basis by level at March 31, 2026 and December 31, 2025, respectively:

(1) Other common stocks in the fair value hierarchy exclude common stock interests that are measured at estimated fair value using the net asset value per share (or its equivalent) practical expedient.

(2) Other investments included in the fair value hierarchy exclude investments that are measured at estimated fair value using the net asset value per share (or its equivalent) practical expedient and investments carried at amortized cost.

Certain financial assets and financial liabilities are measured at fair value on a non-recurring basis; this is, the instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). There were no financial instruments measured on a non-recurring basis at March 31, 2026 and December 31, 2025.

The carrying amounts for the following financial instrument categories approximate their fair values at March 31, 2026 and December 31, 2025 because of their short-term nature: cash and cash equivalents, accrued investment income, premiums receivable, reinsurance recoverable, reinsurance payable, other assets, and other liabilities. The carrying amount of the Company's senior notes approximates fair value.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

The Company is responsible for the determination of fair value and the supporting assumptions and methodologies. The Company has implemented a system of processes and controls designed to provide assurance that its assets and liabilities are appropriately valued. For fair values received from third parties, the Company's processes are designed to provide assurance that the valuation methodologies and inputs are appropriate and consistently applied, the assumptions are reasonable and consistent with the objective of determining fair value, and the fair values are accurately recorded.

At the end of each quarter, the Company determines whether it needs to transfer the fair values of any securities between levels of the fair value hierarchy and, if so, the Company reports the transfer as of the end of the quarter. During the quarter ended March 31, 2026 and 2025, the Company transferred no investments between levels.

For the Company's investments in U.S. government securities that do not have prices in active markets, agency securities, state and municipal governments, and corporate bonds, the Company obtains the fair values from its investment custodians, which use a third-party valuation service. The valuation service calculates prices for the Company's investments in the aforementioned security types on a month-end basis by using several matrix-pricing methodologies that incorporate inputs from various sources. The model the valuation service uses to price U.S. government securities and securities of states and municipalities incorporates inputs from active market makers and inter-dealer brokers. To price corporate bonds and agency securities, the valuation service calculates non-call yield spreads on all issuers, uses option-adjusted yield spreads to account for any early redemption features, and adds final spreads to the U.S. Treasury curve at 3 p.m. (ET) as of quarter end. Since the inputs the valuation service uses in its calculations are not quoted prices in active markets, but are observable inputs, they represent Level 2 inputs.

The Company's warrants fair value was estimated using the Black-Scholes-Merton formula. The following assumptions were used to value the warrants as of March 31, 2026:

The expected annual dividend yield for these warrants is based on no dividends being paid in future quarters. The expected volatility is a historical volatility calculated based on the daily closing prices of a publicly traded entity with a similar profile to the underlying entity. The risk-free interest rate is based on the U.S. Treasury yield curve in effect at March 31, 2026. Expected term takes into account the remaining contractual term of the warrant.

Other Investments

The Company acquired investments in limited partnerships recorded in the other investments line of the Company's Unaudited Condensed Consolidated Balance Sheets. These investments are currently being measured at estimated fair value utilizing a net asset value per share practical expedient. Any change in the fair value of these investments is recorded in the net unrealized gain (loss) on equity securities line on the Company's Unaudited Condensed Consolidated Statements of Comprehensive Income. Dividend and interest income is recognized in the net investment income line of the Company's Unaudited Condensed Consolidated Statements of Comprehensive Income.

The Company has also acquired an investment in a commercial mortgage loan, which is classified as held-for-long-term-investment and a surplus note, which is classified as held-to-maturity. Both of these investments are carried on the balance sheet at amortized cost. Finally, the Company holds short-term investments, which are level 2 investments carried at fair value.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

The information presented in the table below is as of March 31, 2026 and December 31, 2025:

(1) Distributions will be generated from operating income, investment gains, underlying investments of funds, and from liquidation of the underlying assets of the funds. The Company estimates that the underlying assets of the funds will be liquidated over the next four to seven years.

During the second quarter of 2025, the Company invested $6 million in a surplus note, as seen in the table above. As a term of this investment, during the three months ended September 30, 2025, the Company was issued 18,497 warrants to purchase common stock of the issuer of the surplus note for no additional consideration. These warrants are free-standing in nature and are not being used as a hedging instrument. The Company does not invest in derivatives as part of its investment strategy and is only a holder of these warrants as a product of its strategy to invest in this surplus note.

As of March 31, 2026, the fair value of these warrants was $1,064,000, utilizing the assumptions outlined above. As of December 31, 2025, the Company had not assigned a value to these warrants. This change in fair value was recorded in the net unrealized gain (loss) on equity securities line of the Unaudited Condensed Consolidated Statements of Comprehensive Income and the asset is recorded in the other investments line of the Company's Unaudited Condensed Consolidated Balance Sheets. For the three months ended March 31, 2025, these warrants had no impact on the Company's financial position or financial performance as the Company did not have sufficient information to assign value to these warrants. These warrants did not impact the statement of cash flows for either period.

Restricted Cash

The Company is required to maintain assets on deposit with various regulatory authorities to support its insurance operations. The cash on deposit with state regulators is available to settle insurance liabilities. The Company also uses trust funds in certain reinsurance transactions.

The following table presents the components of restricted assets:

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

EARNINGS PER SHARE (EPS)

Basic EPS is based on the weighted average number of common shares outstanding for the period, excluding any dilutive common share equivalents. Diluted EPS reflects the potential dilution resulting from the vesting of outstanding restricted stock awards, restricted stock units, performance stock units and stock options. The following table shows the computation of basic and diluted EPS for the three months ended March 31, 2026 and 2025, respectively:

See Note 16 of these Notes to Unaudited Condensed Consolidated Financial Statements for additional information on the stock grants related to dilutive securities.

REINSURANCE

The Company's catastrophe reinsurance programs are designed primarily by utilizing third-party catastrophe modeling software and consulting with third-party reinsurance experts to project the Company's exposure to catastrophe events. The Company evaluates modeled expected losses developed by the catastrophe modeling software using its risk portfolio data to estimate probable maximum losses ("PML") across multiple return periods and the average annual loss. The Company monitors and manages its catastrophe risk using this model output along with other internal and external data sources, such as its historical loss experience and industry loss experience, to develop its view of catastrophe risk.

The Company's catastrophe reinsurance coverage consists of three separate placements:

AmCoastal’s core catastrophe reinsurance program, including catastrophe bonds (effective April 2024 and December 2024), in effect June 1 through May 31, annually, which includes excess of loss and quota share treaties providing coverage for catastrophe losses from named or numbered windstorms;

AmCoastal’s all other perils catastrophe excess of loss agreement in effect January 1 through December 31, annually, which provides protection from catastrophe loss events other than named or numbered windstorms and earthquakes; and

AmCoastal's catastrophe aggregate excess of loss coverage, in effect January 1 through December 31, annually, which provides protection from all catastrophe loss events, including named and numbered windstorms, severe convective storms and winter storm events.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

This reinsurance protection is an essential part of our catastrophe risk management strategy. It is intended to provide our stockholders with an acceptable return on the risks assumed by our insurance entity, and to reduce the variability of earnings, while providing surplus protection. Although reinsurance agreements contractually obligate our reinsurers to reimburse us for the agreed-upon portion of our gross paid losses, they do not discharge our primary liability. In the event one or more of our reinsurers fail to fulfill their obligation, the surplus of our statutory entity may decline, and we may not be able to fulfill our obligation to policyholders, or we may not be able to maintain compliance with various regulatory financial requirements. Additionally, we face the risk that actual losses incurred from one or more catastrophic events may be above the modeled expected loss resulting in losses exceeding our reinsurance coverage, which may result in a decline in surplus, and as a result we may not be able to fulfill our obligations to policyholders, or we may not be able to maintain compliance with various regulatory financial requirements. The details of our programs and the likelihood of a catastrophic event exceeding these two coverages are outlined below.

AmCoastal’s core catastrophe reinsurance program provides occurrence-based coverage up to an exhaustion point of approximately $1,330,000,000 for a first occurrence and $1,676,000,000 in the aggregate. Under this program, the Company's GAAP retention on a first event is $29,750,000 ($14,000,000 retained by AmCoastal under statutory accounting principles (STAT retained), $15,750,000 (retained separately by the Company's captive)). The Company has purchased second and third event retrocession coverage, reducing its second event GAAP retention to $18,500,000 ($14,000,000 STAT retained by AmCoastal, $4,500,000 retained separately by the Company's captive) and third event GAAP retention to $3,750,000, based on three $100,000,000 loss events. AmCoastal’s program provides sufficient coverage for approximately a 1-in-217-year return period, indicating that the probability of a single occurrence exceeding protection purchased is roughly 0.5% when using the catastrophe model AIR 11.5 (using the long-term catalog with demand surge and loss adjustment expense included) and based on total insured value at September 30, 2025 of $69 billion. AmCoastal’s program also provides sufficient coverage for a 1-in-100-year event followed by a 1-in-50-year event in the same treaty year, the probability of which is less than 0.1%. While we believe these catastrophe models are useful tools and their outputs provide reasonable proxies for the probability of exhausting our reinsurance protections, they are imperfect, and actual results may differ materially from those expected.

AmCoastal’s all other perils catastrophe excess of loss agreement provides protection from catastrophe loss events other than named windstorms and earthquakes up to $95,600,000 for a first event, totaling $170,400,000 in the aggregate. This agreement provides sufficient coverage for approximately a 1-in-227-year return period, indicating that the probability of a single occurrence exceeding protection purchased is no more than 0.5%.

In addition to the programs described above, AmCoastal renewed its catastrophe aggregate excess of loss coverage (the “CAT Agg” agreement) to mitigate our catastrophe frequency risk. This agreement provides coverage for in-force, new and renewal business. Effective January 1, 2026, the CAT Agg agreement provides $40,000,000 of aggregate limit (with a $20,000,000 per occurrence cap) in excess of zero after the $40,000,000 annual aggregate deductible has been met. The CAT Agg agreement limits our losses from all catastrophe loss events, including named windstorms, severe convective storms and winter storm events for the full year ending December 31, 2026.

Where we think prudent, particularly where premium rates are high relative to the risk, we retain risk whereby AmCoastal purchases reinsurance from Shoreline Re, our captive reinsurance entity. Shoreline Re has historically participated on AmCoastal's all other perils catastrophe excess of loss agreement and AmCoastal's excess per risk agreement. In addition, Shoreline Re participates in a 45% quota share agreement with AmCoastal, which provides coverage for all catastrophe perils as well as attritional losses incurred.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

The table below outlines the participation of Shoreline Re for each program, including premium collected and capital at risk.

(1) Capital at risk is calculated by taking the aggregate losses Shoreline Re is subject to under the contract, less net premiums earned under the contract.

(2) This treaty provides or provided coverage for all catastrophe perils and attritional losses incurred. For all catastrophe perils, the quota share agreement provides or provided ground-up protection, effectively reducing our retention for catastrophe losses.

(3) Net premiums earned based on estimated subject premiums at June 1, 2025.

(4) This treaty was commuted on June 1, 2025 with no impact on our consolidated results.

(5) Net premiums earned based on estimated subject premiums at June 1, 2024.

The table below outlines the Company's external quota share agreements in effect for the three months ended March 31, 2026 and 2025.

(1) This treaty provides or provided coverage for all catastrophe perils and attritional losses incurred. For all catastrophe perils, the quota share agreement provides or provided ground-up protection, effectively reducing the Company's retention for catastrophe losses.

(2) The cession rate of this treaty was reduced from 20% to 15% effective June 1, 2025.

Reinsurance recoverable at the balance sheet dates consists of the following:

(1) The Company's reinsurance recoverable balance is net of its allowance for expected credit losses. More information related to this allowance can be found in Note 17.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

LIABILITY FOR UNPAID LOSSES AND LOSS ADJUSTMENT EXPENSE (LAE)

The Company determines its reserve for unpaid losses on an individual case basis for all incidents reported. The liability also includes amounts for incurred but not reported ("IBNR") claims as of the balance sheet date.

The table below shows the analysis of the Company's reserve for unpaid losses for the three months ended March 31, 2026 and 2025:

Based upon the Company's internal analysis and the Company's review of the annual statement of actuarial opinion provided by its actuarial consultants at December 31, 2025, the Company believes that the reserve for unpaid losses reasonably represents the amount necessary to pay all claims and related expenses which may arise from incidents that have occurred as of the balance sheet date.

As reflected in the table above, the Company had favorable development in the first three months of 2026 and 2025 related to prior year losses. This development came as a result of re-estimating ultimate losses in 2026 and 2025 based on our initial reserves being higher than ultimate settlements. Current year loss payments made by the Company during the three months ended March 31, 2026 have decreased compared to the same period in 2025. Case and IBNR reserves on unpaid losses decreased when compared to the prior period as a result of the continued settlement of claims and no new catastrophe events. Reinsurance recoverable on unpaid losses decreased in line with this decrease in case and IBNR reserves.

STATUTORY ACCOUNTING AND REGULATION

The insurance industry is heavily regulated. State laws and regulations, as well as national regulatory agency requirements, govern the operations of all insurers such as the Company's insurance subsidiary. The various laws and regulations require that insurers maintain minimum amounts of statutory surplus and risk-based capital, restrict insurers' ability to pay dividends, specify allowable investment

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

types and investment mixes, and subject insurers to assessments. AmCoastal is domiciled and operates in Florida and at March 31, 2026, and during the three months then ended, met all regulatory requirements of the state.

During 2023, the Company received a multi-year Emergency Assessment notice from the Florida Insurance Guaranty Association ("FIGA"). This assessment is 1.0% on direct written premiums of all covered lines of business in Florida beginning October 1, 2023 through September 30, 2025 to cover the cost of insurance companies facing insolvency. During 2025, FIGA extended this assessment for a third year, beginning October 1, 2025 through September 30, 2026.

The National Association of Insurance Commissioners ("NAIC") has Risk-Based Capital ("RBC") guidelines for insurance companies that are designed to assess capital adequacy and to raise the level of protection that statutory surplus provides for policyholders. Most states, including Florida, have enacted statutory requirements adopting the NAIC RBC guidelines, and insurers having less statutory surplus than required will be subject to varying degrees of regulatory action, depending on the level of capital inadequacy. State insurance regulatory authorities could require an insurer to cease operations in the event the insurer fails to maintain the required statutory capital.

The state laws of Florida permit an insurer to pay dividends or make distributions out of that part of statutory surplus derived from net operating profit and net realized capital gains. The state laws further provide calculations to determine the amount of dividends or distributions that can be made without the prior approval of the insurance regulatory authorities in those states and the amount of dividends or distributions that would require prior approval of the insurance regulatory authorities in those states. Statutory RBC requirements may further restrict the Company's insurance subsidiary's ability to pay dividends or make distributions if the amount of the intended dividend or distribution would cause statutory surplus to fall below minimum RBC requirements.

The Company's insurance subsidiary must file with the various insurance regulatory authorities an “Annual Statement” which reports, among other items, statutory net income and surplus as regards policyholders, which is called stockholders' equity under GAAP. The table below details the statutory net income for the three months ended March 31, 2026 and 2025 for AmCoastal.

The Company's insurance subsidiary must maintain capital and surplus ratios or balances as determined by the regulatory authority of the state in which it is domiciled. At March 31, 2026, the Company met these requirements. The table below details the amount of surplus as regards policyholders for AmCoastal at March 31, 2026 and December 31, 2025.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

LONG-TERM DEBT

Senior Notes Payable

On December 13, 2017, the Company issued $150,000,000 of 10-year senior notes (the Senior Notes) that will mature on December 15, 2027 and bear interest at a rate equal to 6.25% per annum payable semi-annually on each June 15 and December 15, commencing June 15, 2018. The Senior Notes are senior unsecured obligations of the Company. The Company may redeem the Senior Notes at its option, at any time and from time to time in whole or in part, prior to September 15, 2027, at a redemption price equal to the greater of (i) 100% of the principal amount of the notes to be redeemed and (ii) the sum of the present values of the remaining scheduled payments of principal and interest thereon from the date of redemption to the date that is three months prior to maturity, plus accrued and unpaid interest thereon. On or after that date, the Company may redeem the Senior Notes at par, plus accrued and unpaid interest thereon. Effective June 15, 2023, the interest rate of its Senior Notes was 7.25% due to the Kroll Bond Rating Agency, LLC rating of the Company's issuer and debt ratings of BB+. Effective December 16, 2025, the interest rate of the Company's Senior Notes decreased from 7.25% to 6.25% due to the upgrade of the Company's issuer and debt ratings from BB+ to BBB-.

Financial Covenants

The Company's Senior Notes provide that the Company and its subsidiaries shall not incur any indebtedness unless no default exists and the Company’s leverage ratio as of the last day of any annual or quarterly period (the balance sheet date) immediately preceding the date on which such additional indebtedness is incurred would have been no greater than 0.3:1, determined on a pro forma basis as if the additional indebtedness and all other indebtedness incurred since the immediately preceding balance sheet date had been incurred and the proceeds therefrom applied as of such day. The Company and its subsidiaries also may not create, assume, incur or permit to exist any indebtedness for borrowed money that is secured by a lien on the voting stock of any significant subsidiary without securing the Senior Notes equally. The Company may not issue, sell, assign, transfer or otherwise dispose of, directly or indirectly, any of the capital stock of the Company’s significant subsidiaries as of the issue date of the Senior Notes (except to the Company or to one or more of the Company’s other subsidiaries, or for the purpose of qualifying directors or as may be required by law or regulation), subject to certain exceptions. These covenants are evaluated at the end of each calendar year, and at December 31, 2025, while the Company's leverage ratio was greater than the allowed ratio above, the Company did not incur any additional indebtedness during the period and as a result, the Company was in compliance with the covenants in the Senior Notes.

Debt Issuance Costs

The table below presents the roll forward of the Company's debt issuance costs paid, in conjunction with the debt instruments described above, during the three months ended March 31, 2026 and 2025:

GOODWILL AND INTANGIBLE ASSETS

25

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

Goodwill

The carrying amount of goodwill at March 31, 2026 and December 31, 2025 was $59,476,000.

There was no goodwill acquired, disposed of or impaired during the three months ended March 31, 2026 and 2025.

Intangible Assets

The following is a summary of intangible assets excluding goodwill recorded as intangible assets on the Company's Unaudited Condensed Consolidated Balance Sheets:

(1) Indefinite-lived intangible assets are comprised of state insurance and agent licenses, as well as perpetual software licenses.

Intangible assets subject to amortization and not fully amortized consisted of the following:

No impairment in the value of amortizing or non-amortizing intangible assets was recognized during the three months ended March 31, 2026 and 2025.

Amortization expense of the Company's intangible assets was $610,000 and $609,000 for the three months ended March 31, 2026 and 2025, respectively. Estimated amortization expense of the Company's intangible assets to be recognized by the Company during the remainder of 2026 and over the next five years is as follows:

COMMITMENTS AND CONTINGENCIES

Litigation

The Company is involved in claims-related legal actions arising in the ordinary course of business. The Company accrues amounts resulting from claims-related legal actions in unpaid losses and LAE during the period when it determines an unfavorable outcome

26

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

becomes probable and can estimate the amounts. Management makes revisions to estimates based on its analysis of subsequent information that the Company receives regarding various factors, including: (i) per claim information; (ii) company and industry historical loss experience; (iii) judicial decisions and legal developments in the awarding of damages; and (iv) trends in general economic conditions, including the effects of inflation.

On October 20, 2023, the Company received notice that the Florida Department of Financial Services ("DFS") filed a notice of claim and demand for tender of policy limits under the Company's director and officer insurance policy (the “Claim”). The Claim alleges that former officers and directors of United Property & Casualty Insurance Company ("UPC") were involved in wrongful acts that resulted in UPC's insolvency. The Claim demands immediate tender of the Company's director and officer’s policy limit of $40,000,000 where the Company has a retention of $1,500,000. The former directors and officers of UPC deny the allegations. Although no litigation has arisen from the Claim, litigation is anticipated. The directors and officers plan to vigorously defend against the Claim; however, due to the Company's indemnification obligation, during 2023, the Company accrued the policy retention amount of $1,500,000.

Commitments to fund partnership investments

As of March 31, 2026 and December 31, 2025, the Company has unfunded commitments of $1,950,000 related to limited partnership investments.

Leases

The Company, as a lessee, has entered into a lease of commercial office space for 10.3 years. In addition to office space, the Company previously leased office equipment under operating leases, which have all come to a conclusion as of March 31, 2026.

The classification of operating and lease asset and liability balances within the Unaudited Condensed Consolidated Balance Sheets was as follows:

The components of lease expenses were as follows:

27

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

At March 31, 2026, future minimum gross lease payments relating to this non-cancellable operating lease agreement were as follows:

Weighted average remaining lease term and discount rate related to operating leases were as follows:

There were no other cash or non-cash related activities during the three months ended March 31, 2026 and 2025.

Capital lease amortization expenses are included in depreciation expense in the Company's Unaudited Condensed Consolidated Statements of Comprehensive Income. See Note 13 of these Notes to Unaudited Condensed Consolidated Financial Statements for more information regarding depreciation expense, Note 9 for information regarding commitments related to long-term debt, and Note 8 for information regarding commitments related to regulatory actions.

Employee Retention Credit

A series of legislation was enacted in the United States during 2020 and 2021 in response to the COVID-19 pandemic that provided financial relief for businesses impacted by government-mandated shutdowns, work stoppages, or other losses suffered by employers. The Coronavirus Aid, Relief, and Economic Security Act (CARES Act) provided an employee retention credit, which is a refundable tax credit against certain employment taxes of up to $5,000 per employee for eligible employers. The tax credit is equal to 50% of qualified wages paid to employees during a quarter, capped at $10,000 of qualified wages per employee. During the second quarter of 2022, the Company evaluated its eligibility and filed for a $10,161,000 refund in connection with its Employee Retention Tax Credit for the tax year ended December 31, 2021.

During the quarter ended March 31, 2025, the Company received a refund of $1,530,000 that was outstanding as of December 31, 2024. During the year ended December 31, 2025, we received refunds of $4,469,000 that were outstanding as of December 31, 2024. These were recorded as a contra-expense to payroll tax in the periods received. With these receipts, as of December 31, 2025, the Company received all requested funds from the Internal Revenue Service related to this refund and no longer has an unrecorded gain contingency related to this balance.

Quota Share Commission Loss Contingency

AmCoastal participates in shared quota-share reinsurance agreements with the Company's former subsidiary, UPC, which are subject to a variable ceding commission based on loss experience. With the receivership of UPC in 2023, the data received related to

28

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

UPC losses is limited and infrequent and could shift AmCoastal’s commission related to these contracts unfavorably. The Company cannot reasonably determine how this shift will be allocated between the contracted parties. Any updated calculations must be provided to both the Company's reinsurance partners and the DFS as receiver of UPC. The Company is unable to estimate the impact; however, the Company believes a loss contingency related to these commissions may exist as of March 31, 2026.

The Company will continue to monitor the matter for further developments that could affect the outcome of these contingencies and will make any appropriate adjustments each quarter.

DISAGGREGATION OF RELEVANT EXPENSE CAPTIONS

The Company presents its expenses in four major captions: loss and loss adjustment expenses, policy acquisition costs, general and administrative expenses and interest expense. The Company has presented the disaggregation of its general and administrative expenses below for the three months ended March 31, 2026 and 2025.

(1) For the three months ended March 31, 2025, employee compensation includes $1.5 million, in one-time employee retention tax credit refunds.

(2) For the three months ended March 31, 2026 and 2025, other general and administrative expenses were comprised primarily of regulatory fees, director fees, and franchise fees.

PROPERTY AND EQUIPMENT, NET

Property and equipment, net consists of the following:

29

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

Depreciation and amortization expense under property and equipment was $168,000 and $1,029,000 for the three months ended March 31, 2026 and 2025, respectively.

During the three months ended March 31, 2026, the Company disposed of computer hardware, software, and equipment totaling $7,122,000. The accumulated depreciation on these systems totaled $7,122,000 at the time of disposal. During the year ended December 31, 2025, we disposed of computer hardware and software totaling $5,381,000. The accumulated depreciation on these systems totaled $4,018,000 at the time of disposal. We disposed of office furniture totaling $18,000 during the period. Accumulated depreciation at the time of this disposal totaled $18,000.

ACCUMULATED OTHER COMPREHENSIVE LOSS

The Company reports changes in other comprehensive income items within comprehensive income on the Unaudited Condensed Consolidated Statements of Comprehensive Income, and includes accumulated other comprehensive income (loss) as a component of stockholders' equity on its Unaudited Condensed Consolidated Balance Sheets.

The table below details the components of accumulated other comprehensive loss at period end:

(1) The Company has a valuation allowance on the tax impacts of the unrealized gains (losses) on investments resulting in the net tax (expense) benefit during the period reflecting only the realized position.

STOCKHOLDERS' EQUITY

The Company's Board of Directors declared no dividends on the Company's outstanding shares of common stock to stockholders of record during the three months ended March 31, 2026 and 2025.

In July 2019, the Company's Board of Directors authorized a stock repurchase plan of up to $25,000,000 of its common stock. As of March 31, 2026, the Company has repurchased 438,746 shares under this stock repurchase plan, with a total cost of $5,000,000. $20,000,000 of repurchases remains authorized as of March 31, 2026. The Company may be in and out of the market as the Company sees fit. The timing and volume of repurchases are at the discretion of management, based on the capital needs of the business, the market price of ACIC common stock, and general market conditions. The plan has no expiration date, and the plan may be suspended or discontinued at any time.

In September 2023, the Company entered into an equity distribution agreement (the “Agreement”) with Raymond James & Associates, Inc., as agent (the “Agent”), of up to 8,000,000 shares of the Company’s common stock, par value $0.0001 per share (the “Shares”). Sales of the Shares under the Agreement will be made in sales deemed to be “at the market offerings”. The Agent is not required to sell any specific amount of Shares but has agreed to act as the Company’s sales agent for a commission equal to 3.0% of the gross proceeds from the sales of the Shares. As of March 31, 2026, 4,373,000 shares have been sold under the Agreement resulting in commissions paid of approximately $1,181,000 and net proceeds of approximately $38,190,000. The Agreement will terminate upon the issuance and sale of all Shares subject to the Agreement, or the Agreement may be suspended or discontinued at any time.

See Note 16 in these Notes to Unaudited Condensed Consolidated Financial Statements for information regarding stock-based compensation activity.

30

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

STOCK-BASED COMPENSATION

The Company accounts for stock-based compensation under the fair value recognition provisions of ASC Topic 718 - Compensation - Stock Compensation. The Company recognizes stock-based compensation cost over the award’s requisite service period on a straight-line basis for time-based restricted stock grants and performance-based restricted stock grants. The Company records forfeitures as they occur for all stock-based compensation.

The following table presents the Company's total stock-based compensation expense:

(1) The after-tax amounts are determined using the 21% corporate federal tax rate.

The Company had approximately $3,402,000 of unrecognized stock compensation expense at March 31, 2026 related to non-vested stock-based compensation granted, which it expects to recognize over a weighted-average period of approximately 1.8 years. The Company had approximately $65,000 of unrecognized director stock-based compensation expense at March 31, 2026 related to non-vested director stock-based compensation granted, which it expects to recognize over a weighted-average period of approximately 0.1 years.

Restricted stock, restricted stock units and performance stock units

Stock-based compensation cost for restricted stock awards, restricted stock units and performance stock units is measured based on the closing fair market value of the Company's common stock on the date of grant, which vests in equal installments over the requisite service period of typically three years. Restricted stock awards granted to non-employee directors vest over a one-year period. Each restricted stock unit and performance stock unit represents the Company's obligation to deliver to the holder one share of common stock upon vesting.

Performance stock units vest based on the Company's return on average equity compared to a defined group of peer companies. On the grant date, the Company issues the target number of performance stock units. They are subject to forfeitures if performance goals are not met. The actual number of performance stock units earned can vary from zero to 150 percent of the target for the awards.

The Company granted 46,303 and 33,832 shares of restricted common stock during the three months ended March 31, 2026 and 2025, respectively, which had a weighted-average grant date fair value of $11.36 and $12.01, respectively.

The following table presents certain information related to the activity of the Company's non-vested restricted common stock grants:

31

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

Stock options

Stock option fair value was estimated on the grant date using the Black-Scholes-Merton formula. Stock options vest in equal installments over the requisite service period of typically three years. The following weighted-average assumptions were used to value the stock options granted as of the balance sheet dates, March 31, 2026 and December 31, 2025:

The expected annual dividend yield for options granted during 2025 is based on no dividends being paid in future quarters. The expected volatility is a historical volatility calculated based on the daily closing prices over a period equal to the expected term. The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the grant date. Expected term takes into account the three-year graded vesting term and the 10-year contractual term of the option.

The Company did not grant any stock options for the three months ended March 31, 2026 and 2025.

The following table presents certain information related to the activity of the Company's stock option grants:

(1) Presented in ones.

ALLOWANCE FOR EXPECTED CREDIT LOSSES

The Company is exposed to credit losses primarily through three different pools of assets based on similar risk characteristics: premiums receivable for direct written business; reinsurance recoverables from ceded losses to its reinsurers; and its investment holdings. The Company estimates the expected credit losses based on historical trends, credit ratings assigned to reinsurers by rating agencies, average default rates, current economic conditions, and reasonable and supportable forecasts of future economic conditions that affect the collectability of the reported amounts over its expected life. Changes in the relevant information may significantly affect the estimates of expected credit losses.

The allowance for credit losses is deducted from the amortized cost basis of the assets to present their net carrying value at the amount expected to be collected. Each period, the allowance for credit losses is adjusted through earnings to reflect expected credit losses over the remaining lives of the assets.

32

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

The following tables summarize the Company's allowance for expected credit losses by pooled asset for the three months ended March 31, 2026 and 2025, respectively:

As of March 31, 2026 and 2025, the Company had no allowance for expected credit losses related to its investment holdings.

SUBSEQUENT EVENTS

The Company evaluates all subsequent events and transactions for potential recognition or disclosure in its financial statements.

On April 22, 2026, the Company, through its wholly-owned insurance subsidiary AmCoastal, issued a $200 million catastrophe bond. This bond is a three-year transaction that provides all-perils indemnity coverage through May 31, 2029. The bond is split into two classes, 1) Class A coverage of $100 million that contains a drop down feature to an attachment point of $50 million on third and subsequent catastrophe events, and 2) Class B coverage of $100 million that attaches at $225 million.

33

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our Unaudited Condensed Consolidated Financial Statements and related notes appearing elsewhere in this Form 10-Q, as well as with the Consolidated Financial Statements and related footnotes under Part II. Item 8 of our Annual Report on Form 10-K for the year ended December 31, 2025. This discussion and analysis contains forward-looking statements that involve risks, uncertainties and assumptions. Actual results may differ materially from those expressed or implied in these forward-looking statements as a result of certain known and unknown risks and uncertainties. See "Forward-Looking Statements."

EXECUTIVE SUMMARY

Overview

American Coastal Insurance Corporation (referred to in this document as we, our, us, the Company or ACIC) is a holding company primarily engaged in commercial property and casualty insurance business with investments in the United States. We conduct our business principally through our wholly-owned insurance subsidiary, American Coastal Insurance Company (AmCoastal). Collectively, we refer to the holding company and all our subsidiaries, including non-insurance subsidiaries, as “American Coastal Insurance Corporation,” which is the preferred brand identification for our Company.

Our Company’s revenue is generated primarily from writing insurance in Florida. Our target market in such areas consists of states where the perceived threat of natural catastrophe has caused large national insurance carriers to reduce their concentration of policies. We believe an opportunity exists for ACIC to write profitable business in such areas.

On May 9, 2024, we entered into a Stock Purchase Agreement (the "Sale Agreement") with Forza Insurance Holdings, LLC (Forza) in which ACIC agreed to sell and Forza agreed to acquire 100% of the issued and outstanding stock of Interboro Insurance Company (IIC), our former insurance subsidiary. Forza’s application to acquire IIC was approved by the New York Department of Financial Services ("NYDFS") on February 13, 2025, and the sale closed on April 1, 2025. The Company received cash proceeds totaling $25,679,000 from the sale resulting in a loss on disposal of $247,000, net of tax impacts. The Company also recognized a $1,348,000 loss, net of tax impacts, on IIC's fixed maturity portfolio, which was included in accumulated other comprehensive loss on the Company's Consolidated Balance Sheets prior to the sale. As a result, IIC results of operations and assets and liabilities are captured within discontinued operations and can be seen in Note 3 of the Notes to Unaudited Condensed Consolidated Financial Statements above.

Our policies in-force increased by 0.4% from 4,239 policies in-force at March 31, 2025 to 4,254 policies in-force at March 31, 2026.

The following discussion highlights significant factors influencing the consolidated financial position and results of operations of American Coastal Insurance Corporation. In evaluating our results of operations, we use premiums written and earned, policies in-force and new and renewal policies by geographic concentration. We also consider the impact of catastrophe losses and prior year development on our loss ratios, expense ratios and combined ratios. In monitoring our investments, we use credit quality, investment income, cash flows, realized gains and losses, unrealized gains and losses, asset diversification and portfolio duration. To evaluate our financial condition, we consider our liquidity, financial strength, ratings, book value per share and return on equity.

34

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

2026 Highlights

(1) In order to reconcile the net income to the core income measure, we included the tax impact of all adjustments using the 21% corporate federal tax rate.

(2) Core income, a measure that is not based on GAAP, is reconciled above to net income, the most directly comparable GAAP measure. Additional information regarding non-GAAP financial measures presented in this Form 10-Q is in "Definitions of Non-GAAP Measures" below.

35

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

Consolidated Net Income

(1) Loss ratio, net is calculated as losses and loss adjustment expense (LAE) net of losses ceded to reinsurers, relative to net premiums earned. Management uses this operating metric to analyze our loss trends and believes it is useful for investors to evaluate this component separately from our other operating expenses.

(2) Expense ratio is calculated as the sum of all operating expenses less interest expense relative to net premiums earned. Management uses this operating metric to analyze our expense trends and believes it is useful for investors to evaluate this component separately from our loss expenses.

(3) Combined ratio is the sum of the loss ratio, net and the expense ratio, net. Management uses this operating metric to analyze our total expense trends and believes it is a key indicator for investors when evaluating the overall profitability of our business.

(4) Underlying combined ratio, a measure that is not based on GAAP, is reconciled above to the combined ratio, the most directly comparable GAAP measure. Additional information regarding non-GAAP financial measures presented in this Form 10-Q is in "Definitions of Non-GAAP Measures" below.

36

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

Definitions of Non-GAAP Measures

We believe that investors' understanding of ACIC's performance is enhanced by our disclosure of the following non-GAAP measures. Our methods for calculating these measures may differ from those used by other companies and therefore comparability may be limited.

Combined ratio excluding the effects of current year catastrophe losses and prior year reserve development (underlying combined ratio) is a non-GAAP measure, that is computed by subtracting the effect of current year catastrophe losses and prior year development from the combined ratio. We believe that this ratio is useful to investors and it is used by management to highlight the trends in our business that may be obscured by current year catastrophe losses and prior year development. Current year catastrophe losses cause our loss trends to vary significantly between periods as a result of their frequency of occurrence and magnitude, and can have a significant impact on the combined ratio. Prior year development is caused by unexpected loss development on historical reserves. We believe it is useful for investors to evaluate these components separately and in the aggregate when reviewing our performance. The most directly comparable GAAP measure is the combined ratio. The underlying combined ratio should not be considered as a substitute for the combined ratio and does not reflect the overall profitability of our business.

Net loss and LAE ratio excluding the effects of current year catastrophe losses and prior year reserve development (underlying loss and LAE ratio) is a non-GAAP measure, that is computed by subtracting the effect of current year catastrophe losses and prior year development from the net loss & LAE ratio. We believe that this ratio is useful to investors and it is used by management to highlight the loss trends in our business that may be obscured by current year catastrophe losses and prior year development. Current year catastrophe losses cause our loss trends to vary significantly between periods as a result of their frequency of occurrence and magnitude, and can have a significant impact on the net loss and LAE ratio. Prior year development is caused by unexpected loss development on historical reserves. We believe it is useful for investors to evaluate these components separately and in the aggregate when reviewing our performance. The most directly comparable GAAP measure is the net loss and LAE ratio. The underlying loss and LAE ratio should not be considered as a substitute for the net loss and LAE ratio and does not reflect the overall profitability of our business.

Net loss and LAE excluding the effects of current year catastrophe losses and prior year reserve development (underlying loss and LAE) is a non-GAAP measure, that is computed by subtracting the effect of current year catastrophe losses and prior year reserve development from net loss and LAE. We use underlying loss and LAE figures to analyze our loss trends that may be impacted by current year catastrophe losses and prior year development on our reserves. As discussed previously, these two items can have a significant impact on our loss trends in a given period. We believe it is useful for investors to evaluate these components separately and in the aggregate when reviewing our performance. The most directly comparable GAAP measure is net loss and LAE. The underlying loss and LAE measure should not be considered a substitute for net loss and LAE and does not reflect the overall profitability of our business.

Net income (loss) excluding the effects of amortization of intangible assets, income (loss) from discontinued operations, realized gains (losses) and unrealized gains (losses) on equity securities, net of tax (core income (loss)) is a non-GAAP measure, which is computed by adding amortization, net of tax, to net income (loss) and subtracting income (loss) from discontinued operations, net of tax, realized gains (losses) on our investment portfolio, net of tax, and unrealized gains (losses) on our equity securities, net of tax, from net income (loss). Amortization expense is related to the amortization of intangible assets acquired, including goodwill, through mergers and therefore the expense does not arise through normal operations. Investment portfolio gains (losses) and unrealized equity security gains (losses) vary independent of our operations. We believe it is useful for investors to evaluate these components separately and in the aggregate when reviewing our performance. The most directly comparable GAAP measure is net income (loss). The core income (loss) measure should not be considered a substitute for net income (loss) and does not reflect the overall profitability of our business.

37

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

When we prepare our consolidated financial statements and accompanying notes in conformity with GAAP, we must make estimates and assumptions about future events that affect the amounts we report. Certain of these estimates result from judgments that can be subjective and complex. As a result of that subjectivity and complexity, and because we continuously evaluate these estimates and assumptions based on a variety of factors, actual results could materially differ from our estimates and assumptions if changes in one or more factors require us to make accounting adjustments. During the three months ended March 31, 2026, we reassessed our critical accounting policies and estimates as disclosed in Note 2 to the Notes to Unaudited Condensed Consolidated Financial Statements and our Annual Report on Form 10-K for the year ended December 31, 2025. We have made no changes or additions with regard to those policies and estimates.

RECENT ACCOUNTING STANDARDS

Please refer to Note 2 in the Notes to Unaudited Condensed Consolidated Financial Statements for a discussion of recent accounting standards that may affect us.

38

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

ANALYSIS OF FINANCIAL CONDITION - MARCH 31, 2026 COMPARED TO DECEMBER 31, 2025

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our accompanying unaudited condensed consolidated interim financial statements and related notes, and in conjunction with the section entitled "Management's Discussion and Analysis of Financial Condition and Results of Operations" in our Annual Report on Form 10-K for the year ended December 31, 2025.

Investments

The primary goals of our investment strategy are to preserve capital, maximize after-tax investment income, maintain liquidity and minimize risk. To accomplish our goals, we purchase debt securities in sectors that represent the most attractive relative value, and we maintain a moderate equity exposure. Limiting equity exposure manages risks and helps to preserve capital for two reasons: first, bond market returns are less volatile than stock market returns, and second, should the bond issuer enter bankruptcy liquidation, bondholders generally have a higher priority than equity holders in a bankruptcy proceeding.

We must comply with applicable state insurance regulations that prescribe the type, quality and concentrations of investments our insurance subsidiary can make; therefore, our current investment policy limits investment in non-investment-grade fixed maturities and limits total investment amounts in preferred stock, common stock and mortgage notes receivable. We do not invest in derivative securities, however, we do hold warrants as a result of our surplus note investment. Please see Note 4 for more information.

As of March 31, 2026, we engaged one outside asset management company, which has authority and discretion to buy and sell securities for us, manage our investments subject to (i) the guidelines established by our Board of Directors and (ii) the direction of management. Prior to August 2025, we engaged two outside asset management companies. The Investment Committee of our Board of Directors reviews and approves our investment policy on a regular basis.

Our cash, cash equivalents, restricted cash and investment portfolio totaled $599,445,000 at March 31, 2026, compared to $647,744,000 at December 31, 2025. The Company paid a dividend totaling approximately $36.6 million during the first quarter, which drove this decrease, along with changes in operating assets and liabilities.

39

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

The following table summarizes our investments, by type:

We classify all of our fixed-maturity investments as available-for-sale. Our investments at March 31, 2026 and December 31, 2025 consisted mainly of U.S. government and agency securities, securities of investment-grade corporate issuers, mortgage-backed securities, and states, municipalities and political subdivisions. Our equity holdings as of March 31, 2026 and December 31, 2025 consisted of mutual funds and common stock. At March 31, 2026, approximately 82.5% of our fixed maturities were U.S. Treasuries or corporate bonds rated "A" or better, and 17.5% were corporate bonds rated "BBB" or "BB".

Reinsurance

We follow the industry practice of reinsuring a portion of our risks. Reinsurance involves transferring, or "ceding", all or a portion of the risk exposure on policies we write to another insurer, known as a reinsurer. To the extent that our reinsurers are unable to meet the obligations they assume under our reinsurance agreements, we remain primarily liable for the entire insured loss under the policies we write.

The Company's catastrophe reinsurance coverage consists of three separate placements:

AmCoastal’s core catastrophe reinsurance program, including catastrophe bonds (effective April 2024 and December 2024), in effect June 1 through May 31, annually, which includes excess of loss and quota share treaties providing coverage for catastrophe losses from named or numbered windstorms;

AmCoastal’s all other perils catastrophe excess of loss agreement in effect January 1 through December 31, annually, which provides protection from catastrophe loss events other than named or numbered windstorms and earthquakes; and

AmCoastal's catastrophe aggregate excess of loss coverage, in effect January 1 through December 31, annually, which provides protection from all catastrophe loss events, including named and numbered windstorms, severe convective storms and winter storm events.

40

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

This reinsurance protection is an essential part of our catastrophe risk management strategy. It is intended to provide our stockholders with an acceptable return on the risks assumed by our insurance entity, and to reduce the variability of earnings, while providing surplus protection. Although reinsurance agreements contractually obligate our reinsurers to reimburse us for the agreed-upon portion of our gross paid losses, they do not discharge our primary liability. In the event one or more of our reinsurers fail to fulfill their obligation, the surplus of our statutory entity may decline, and we may not be able to fulfill our obligation to policyholders, or we may not be able to maintain compliance with various regulatory financial requirements. Additionally, we face the risk that actual losses incurred from one or more catastrophic events may be above the modeled expected loss resulting in losses exceeding our reinsurance coverage, which may result in a decline in surplus, and as a result we may not be able to fulfill our obligations to policyholders, or we may not be able to maintain compliance with various regulatory financial requirements. The details of our programs and the likelihood of a catastrophic event exceeding these two coverages are outlined below.

AmCoastal’s core catastrophe reinsurance program provides occurrence-based coverage up to an exhaustion point of approximately $1,330,000,000 for a first occurrence and $1,676,000,000 in the aggregate. Under this program, the Company's GAAP retention on a first event is $29,750,000 ($14,000,000 retained by AmCoastal under statutory accounting principles (STAT retained), $15,750,000 (retained separately by the Company's captive)). The Company has purchased second and third event retrocession coverage, reducing its second event GAAP retention to $18,500,000 ($14,000,000 STAT retained by AmCoastal, $4,500,000 retained separately by the Company's captive) and third event GAAP retention to $3,750,000, based on three $100,000,000 loss events. AmCoastal’s program provides sufficient coverage for approximately a 1-in-217-year return period, indicating that the probability of a single occurrence exceeding protection purchased is roughly 0.5% when using the catastrophe model AIR 11.5 (using the long-term catalog with demand surge and loss adjustment expense included) and based on total insured value at September 30, 2025 of $69 billion. AmCoastal’s program also provides sufficient coverage for a 1-in-100-year event followed by a 1-in-50-year event in the same treaty year, the probability of which is less than 0.1%. While we believe these catastrophe models are useful tools and their outputs provide reasonable proxies for the probability of exhausting our reinsurance protections, they are imperfect, and actual results may differ materially from those expected.

AmCoastal’s all other perils catastrophe excess of loss agreement provides protection from catastrophe loss events other than named windstorms and earthquakes up to $95,600,000 for a first event, totaling $170,400,000 in the aggregate. This agreement provides sufficient coverage for approximately a 1-in-227-year return period, indicating that the probability of a single occurrence exceeding protection purchased is no more than 0.5%.

In addition to the programs described above, AmCoastal renewed its catastrophe aggregate excess of loss coverage (the “CAT Agg” agreement) to mitigate our catastrophe frequency risk. This agreement provides coverage for in-force, new and renewal business. Effective January 1, 2026, the CAT Agg agreement provides $40,000,000 of aggregate limit (with a $20,000,000 per occurrence cap) in excess of zero after the $40,000,000 annual aggregate deductible has been met. The CAT Agg agreement limits our losses from all catastrophe loss events, including named windstorms, severe convective storms and winter storm events for the full year ending December 31, 2026.

Where we think prudent, particularly where premium rates are high relative to the risk, we retain risk whereby AmCoastal purchases reinsurance from Shoreline Re, our captive reinsurance entity. Shoreline Re has historically participated on AmCoastal's all other perils catastrophe excess of loss agreement and AmCoastal's excess per risk agreement. In addition, Shoreline Re participates in a 45% quota share agreement with AmCoastal, which provides coverage for all catastrophe perils as well as attritional losses incurred.

The table below outlines the participation of Shoreline Re for each program, including premium collected and capital at risk.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

(1) Capital at risk is calculated by taking the aggregate losses Shoreline Re is subject to under the contract, less net premiums earned under the contract.

(2) This treaty provides or provided coverage for all catastrophe perils and attritional losses incurred. For all catastrophe perils, the quota share agreement provides or provided ground-up protection, effectively reducing our retention for catastrophe losses.

(3) Net premiums earned based on estimated subject premiums at June 1, 2025.

(4) This treaty was commuted on June 1, 2025 with no impact on our consolidated results.

(5) Net premiums earned based on estimated subject premiums at June 1, 2024.

The table below outlines our external quota share agreements in effect for the three months ended March 31, 2026 and 2025.

(1) This treaty provides or provided coverage for all catastrophe perils and attritional losses incurred. For all catastrophe perils, the quota share agreement provides or provided ground-up protection, effectively reducing our retention for catastrophe losses.

(2) The cession rate of this treaty was reduced from 20% to 15% effective June 1, 2025.

Reinsurance costs as a percentage of gross earned premium during the three months ended March 31, 2026 and 2025 were as follows:

We amortize our ceded unearned premiums over the annual agreement period, and we record that amortization in ceded premiums earned on our Unaudited Condensed Consolidated Statements of Comprehensive Income. The table below summarizes the amounts of our ceded premiums written under the various types of agreements, as well as the amortization of ceded unearned premiums:

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

Current year catastrophe losses disaggregated between named and numbered storms and all other catastrophe loss events are shown in the following table.

(1) Incurred loss and LAE is equal to losses and LAE paid plus the change in case and incurred but not reported reserves. Shown net of losses ceded to reinsurers. Incurred loss and LAE and number of events includes the development on storms during the year in which it occurred.

See Note 6 in our Notes to Unaudited Condensed Consolidated Financial Statements for additional information regarding our reinsurance program.

Unpaid Losses and Loss Adjustments

We generally use the term “loss(es)” to collectively refer to both loss and LAE. We establish reserves for both reported and unreported unpaid losses that have occurred at or before the balance sheet date for amounts we estimate we will be required to pay in the future, including provisions for claims that have been reported but are unpaid at the balance sheet date and for obligations on claims that have been incurred but not reported at the balance sheet date. Our policy is to establish these loss reserves after considering all information known to us at each reporting period. At any given point in time, our loss reserve represents our best estimate of the ultimate settlement and administration costs of our insured claims incurred and unpaid.

Unpaid losses and LAE totaled $126,990,000 and $165,701,000 as of March 31, 2026 and December 31, 2025, respectively.

Since the process of estimating loss reserves requires significant judgment due to a number of variables, such as fluctuations in inflation, judicial decisions, legislative changes and changes in claims handling procedures, our ultimate liability will likely differ from these estimates. We revise our reserve for unpaid losses as additional information becomes available, and reflect adjustments, if any, in our earnings in the periods in which we determine the adjustments as necessary.

See Note 7 in our Notes to Unaudited Condensed Consolidated Financial Statements for additional information regarding our losses and loss adjustments.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

RESULTS OF OPERATIONS - COMPARISON OF THE THREE MONTH PERIODS ENDED MARCH 31, 2026 AND 2025

ACIC net income for the three months ended March 31, 2026 decreased $2,094,000, or 9.8%, to $19,254,000 from $21,348,000 for the same period in 2025. The primary driver of the change in net income was our discontinued operations which generated net income of $1.6 million in 2025. The Company divested these operations in 2025.

Revenue

Our gross written premiums decreased $48,457,000, or 24.5%, to $149,395,000 for the three months ended March 31, 2026 from $197,852,000 for the same period in 2025. Gross premium earned decreased $20,967,000, or 12.9%, to $141,134,000 for the three months ended March 31, 2026 from $162,101,000 for the same period in 2025. These changes are mainly attributed to a decrease of 24% in our net pricing year-over-year as the market softened. Ceded premiums earned decreased $18,306,000, or 19.5%, to $75,523,000 for the three months ended March 31, 2026 from $93,829,000 for the same period in 2025. The breakdown of the quarter-over-quarter change in these premiums and new and renewal policies are shown in the tables below. More detail regarding our ceded premiums can be seen in our analysis of financial condition above.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

Expenses

Expenses for the three months ended March 31, 2026 decreased $1,395,000, or 3.0%, to $45,683,000 from $47,078,000 for the same period in 2025. The decrease in expenses was primarily due to a decrease in policy acquisition costs and loss and loss adjustment expenses quarter-over-quarter. This was partially offset by increased general and administrative expenses quarter-over-quarter. The details of these changes can be seen below.

(1) Underlying loss and LAE is a non-GAAP measure and is reconciled above to net loss and LAE, the most directly comparable GAAP measure. Additional information regarding non-GAAP financial measures presented in this document is in the "Definitions of Non-GAAP Measures" section of this Form 10-Q.

The calculations of our expense ratios are shown below.

Loss and LAE decreased $1,146,000, or 10.1%, to $10,243,000 for the three months ended March 31, 2026 from $11,389,000 for the same period in 2025. Loss and LAE expense as a percentage of net earned premiums decreased 1.1 points to 15.6% for the three months ended March 31, 2026, compared to 16.7% for the same period in 2025. Excluding catastrophe losses and prior year reserve development, our underlying loss and LAE as a percentage of gross earned premiums for the three months ended March 31, 2026 would have been 8.4%, or no change from 8.4% during the three months ended March 31, 2025.

Policy acquisition costs decreased $1,073,000, or 4.6%, to $22,393,000 for the three months ended March 31, 2026 from $23,466,000 for the same period in 2025. The primary driver of the decrease was a decrease in external management fees of $3,153,000 as a result of the decrease in gross premiums shown above. This was partially offset by a decrease in ceding commission income of $2,361,000 as the result of the Company's decrease in quota share reinsurance coverage from 20% to 15%, effective June 1, 2025.

General and administrative expenses increased $1,197,000, or 12.6%, to $10,703,000 for the three months ended March 31, 2026 from $9,506,000 for the same period in 2025, driven by increased salary-related expenses, primarily as a non-recurring employee retention tax credit refund of $1,530,000 submitted to the Internal Revenue Service in 2022 that was received during the first quarter of 2025, which did not recur in 2026. Overall, employee compensation increased $2,389,000, inclusive of this refund. This was partially offset by a decrease in amortization of $852,000, as assets related to our intellectual property transaction with Slide Insurance Company were fully amortized when the transaction came to its conclusion in January 2026. This decrease in amortization corresponds with the

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

decrease seen in other income quarter-over-quarter. The full details of our general and administrative expenses can be seen in Note 12, above.

LIQUIDITY AND CAPITAL RESOURCES

We generate cash through premium collections, reinsurance recoveries, investment income, the sale or maturity of invested assets, the incurrence of debt and the issuance of additional shares of our stock. We use cash to pay reinsurance premiums, claims and related costs, policy acquisition costs, salaries and employee benefits, other expenses and stockholder dividends, acquire subsidiaries and pay associated costs, as well as to repay debts, repurchase stock and purchase investments.

As a holding company, we do not conduct any business operations of our own and, as a result, we rely on cash dividends or intercompany loans from our management subsidiary to pay our general and administrative expenses. Insurance regulatory authorities heavily regulate our insurance subsidiary, including restricting any dividends paid by our insurance subsidiary and requiring approval of any management fees our insurance subsidiary pays to our management subsidiary for services rendered; however, nothing restricts our non-insurance company subsidiaries from paying us dividends other than state corporate laws regarding solvency. Our management subsidiary pays us dividends primarily using cash from the collection of management fees from our insurance subsidiary, pursuant to the management agreements in effect between those entities. In accordance with state laws, our insurance subsidiary may pay dividends or make distributions out of that part of its statutory surplus derived from its net operating profit and its net realized capital gains. The Risk-Based Capital (RBC) guidelines published by the National Association of Insurance Commissioners may further restrict our insurance subsidiary's ability to pay dividends or make distributions if the amount of the intended dividend or distribution would cause their respective surplus as it regards policyholders to fall below minimum RBC guidelines. See Note 8 in our Notes to Unaudited Condensed Consolidated Financial Statements for additional information.

The Company made no capital contributions to its subsidiaries during the three months ended March 31, 2026 and 2025.

In September 2023, we entered into an equity distribution agreement (the “Agreement”) with Raymond James & Associates, Inc., as agent (the “Agent”), of up to 8,000,000 shares of the Company’s common stock, par value $0.0001 per share (the “Shares”). Sales of the Shares under the Agreement will be made in sales deemed to be “at the market” offerings. The Agent is not required to sell any specific amount of Shares but has agreed to act as our sales agent for a commission equal to 3.0% of the gross proceeds from the sales of the Shares. As of March 31, 2026, 4,373,000 shares had been sold under the Agreement resulting in commissions paid of approximately $1,181,000 and net proceeds of approximately $38,190,000. The Agreement will terminate upon the issuance and sale of all Shares subject to the Agreement, or the Agreement may be suspended or discontinued at any time.

Cash Flows for the Three Months Ended March 31, 2026 and 2025 (in thousands)

Operating Activities

The principal cash inflows from our operating activities come from premium collections, reinsurance recoveries and investment income. The principal cash outflows from our operating activities are the result of claims and related costs, reinsurance premiums, policy

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

acquisition costs and salaries and employee benefits. A primary liquidity concern with respect to these cash flows is the risk of large magnitude catastrophe events.

During the three months ended March 31, 2026, we experienced cash outflows of $5,736,000 compared to cash inflows of $26,443,000 during the three months ended March 31, 2025. This change was driven by a reduction in premiums collected that was more than the reduction in net paid losses during the three months ended March 31, 2026 as compared to March 31, 2025. The change in reinsurance recoverable decreased $44,859,000 and the change in unearned premiums decreased $30,825,000, partially offset by a decrease in the change in unpaid loss and loss adjustment expenses of $27,195,000. The change in unpaid loss and loss adjustment expenses and the corresponding reinsurance recoverable balance can be attributed to the continued settlement of catastrophe claims with no similar activity occurring in 2026.

Investing Activities

The principal cash inflows from our investing activities come from repayments of principal, proceeds from maturities and sales of investments. We closely monitor and manage these risks through our comprehensive investment risk management process. The principal cash outflows relate to sales of investments. The primary liquidity concerns with respect to these cash flows are the risk of default by debtors and market disruption. During the three months ended March 31, 2026, net purchases of investments totaled $6,459,000 compared to net sales of investments of $5,300,000 during the three months ended March 31, 2025.

Financing Activities

The principal cash outflows from our financing activities come from payments of dividends, repayments of debt, and repurchases of common stock. The primary liquidity concern with respect to these cash flows is market disruption in the cost and availability of credit. We believe our current capital resources, together with cash provided from our operations, are sufficient to meet currently anticipated working capital requirements. During the three months ended March 31, 2026, cash used in financing activities totaled $41,574,000, compared to $309,000 provided by financing activities for the three months ended March 31, 2025, driven by the payment of a special cash dividend of $0.75 per share declared in December 2025 and paid in January 2026 and treasury stock repurchases of $5,000,000.

OFF-BALANCE SHEET ARRANGEMENTS

At March 31, 2026, we did not have any off-balance sheet arrangements or material changes to our contractual obligations during the quarter.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

The Company is exposed to market risks, including interest rate risk related to changes in interest rates in the Company's fixed-maturity securities, credit risk related to changes in the financial condition of the issuers of the Company's fixed-maturities and equity price risk related to changes in equity security prices. These risks are disclosed in Part II, Item 7A. "Quantitative and Qualitative Disclosures about Market Risk" of the Company's Annual Report on Form 10-K for the year ended December 31, 2025. The Company had no material changes in market risk during the quarter ended March 31, 2026.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

Item 4. Controls and Procedures

The Company maintains a set of disclosure controls and procedures designed to ensure that the information required to be disclosed in reports the Company files or submits under the Securities Exchange Act of 1934, as amended (the Exchange Act), is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. The Company designed its disclosure controls with the objective of ensuring the Company accumulates and communicates this information to its management, including its principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure.

Under the supervision and with the participation of the Company's management, including its principal executive officer and principal financial officer, the Company conducted an evaluation of the effectiveness of the design and operations of its disclosure controls and procedures, as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, as of the end of the period covered by this report. Based on the Company's evaluation, the Company's management concluded that its internal control over financial reporting was effective as of March 31, 2026.

Changes in Internal Control over Financial Reporting

During the quarter ended March 31, 2026, there was no change in the Company's internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) identified in connection with the evaluation of the Company's internal control performed during the fiscal year ended December 31, 2025, that has materially affected, or is reasonably likely to materially affect, the Company's internal control over financial reporting.

48

AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

PART II. OTHER INFORMATION

Item 1. Legal Proceedings

The Company is involved in routine claims-related legal actions arising in the ordinary course of business. The Company accrues amounts resulting from claims-related legal actions in unpaid losses and loss adjustment expenses during the period that the Company determines an unfavorable outcome becomes probable and can estimate the amounts. Management makes revisions to the Company's estimates based on its analysis of subsequent information that the Company receives regarding various factors, including: (i) per claim information; (ii) company and industry historical loss experience; (iii) judicial decisions and legal developments in the awarding of damages; and (iv) trends in general economic conditions, including the effects of inflation.

On October 20, 2023, the Company received notice that the Florida Department of Financial Services ("DFS") filed a notice of claim and demand for tender of policy limits under the Company's director and officer insurance policy (the “Claim”). The Claim alleges that former officers and directors of United Property & Casualty Insurance Company ("UPC") were involved in wrongful acts that resulted in UPC's insolvency. The Claim demands immediate tender of the Company's director and officer’s policy limit of $40,000,000 where the Company has a retention of $1,500,000. The former directors and officers of UPC deny the allegations. Although no litigation has arisen from the Claim, litigation is anticipated. The directors and officers plan to vigorously defend against the Claim; however, due to the Company's indemnification obligation, during 2023, the Company accrued the policy retention amount of $1,500,000.

Item 1A. Risk Factors

There have been no material changes to the risk factors previously disclosed in Part I. Item 1A "Risk Factors" of the Company's Annual Report on Form 10-K for the year ended December 31, 2025.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

a) Sales of Unregistered Securities

During the three months ended March 31, 2026, the Company did not sell any unregistered equity securities.

c) Issuer Purchase of Equity Securities

The following table summarized the share repurchase activity for the three months ended March 31, 2026:

• (In ones)
• (In thousands)_

(1) Average price paid per share includes costs associated with the repurchases but excludes the 1% federal excise tax accrued on our share repurchases pursuant to the Inflation Reduction Act of 2022.

(2) On July 31, 2019, we announced that our board of directors had authorized a share repurchase plan providing for the repurchase of up to $25 million of the Company's common stock. The stock repurchases may be made through solicited or unsolicited transactions in the open market, in privately negotiated transactions, pursuant to Rule 10b5-1 plans, or otherwise, subject to business and market conditions and other factors, and at such times and in such amounts as management and the Board deem appropriate. The authorization has no expiration date. See Note 15 in Part 1, Item 1 of this Quarterly Report on Form 10-Q for additional information related to share repurchases.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

None.

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

Item 6. Exhibits

The following exhibits are filed or furnished herewith or are incorporated herein by reference:

Exhibit Description

3.1 Second Certificate of Amendment to American Coastal Insurance Corporation’s Certificate of Incorporation(included as Exhibit 3.1 to Form 8-K filed on July 14, 2023, and incorporated herein by reference.) 3.2 First Amendment to American Coastal Insurance Corporation’s Amended and Restated Bylaws (included asExhibit 3.2 to Form 8-K filed on July 14, 2023, and incorporated herein by reference.) 31.1 Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act. 31.2 Certification of Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act. 32.1 Certification of Principal Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act. 32.2 Certification of Principal Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act. 101.INS XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document 101.SCH Inline XBRL Taxonomy Extension Schema With Embedded Linkbase Documents (104) Cover Page Interactive Data File (embedded within the Inline XBRL document and included in Exhibit 101).

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AMERICAN COASTAL INSURANCE CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2026

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