ConnectOne Bancorp, Inc.

Shareholders and the Board of Directors of

ConnectOne Bancorp, Inc. and Subsidiaries

Englewood Cliffs, New Jersey

Opinions on the Financial Statements and Internal Control over Financial Reporting

We have audited the accompanying statements of financial condition of ConnectOne Bancorp, Inc. and Subsidiaries (the "Company") as of December 31, 2025 and 2024, the related consolidated statements of income, comprehensive income, stockholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2025, and the related notes (collectively referred to as the "financial statements"). We also have audited the Company’s internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control – Integrated Framework: (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

In our opinion, the financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2025 in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control – Integrated Framework: (2013) issued by COSO.

Basis for Opinions

The Company’s management is responsible for these financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s financial statements and an opinion on the Company’s internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) ("PCAOB") and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the financial statements included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements.

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Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Critical Audit Matters

The critical audit matters communicated below are matters arising from the current period audit of the financial statements that were communicated or required to be communicated to the audit committee and that: (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing a separate opinion on the critical audit matters or on the accounts or disclosures to which they relates.

Allowance for Credit Losses–* Qualitative Loss Factors on Commercial and Commercial Real Estate Loans*

As described in Note 1a to the consolidated financial statements, the Company accounts for credit losses under ASC 326, Financial Instruments – Credit Losses. ASC 326 requires the measurement of expected lifetime credit losses for financial assets measured at amortized cost at the reporting date. As of December 31, 2025, the allowance for credit losses (“ACL”) on loans was $154,305,000.

Management employs a process and methodology to estimate the ACL on pooled loans that evaluates both quantitative and qualitative factors. The methodology for evaluating quantitative factors includes pooling loans into portfolio segments for loans that share similar characteristics. Pooled loan portfolio segments include commercial, commercial real estate, commercial construction, residential real estate, and consumer loans.

For pooled loans, the Company utilizes a discounted cash flow (“DCF”) methodology to estimate credit losses over the expected life of the loan. The DCF methodology combines probability of default, the loss given default, and prepayment speed assumptions to estimate a reserve for each loan. The quantitative loss rates are adjusted by macroeconomic scenarios and reverts, on a straight-line basis, to average historical losses after the forecasted periods. The sum of all the loan level reserves is aggregated for each portfolio segment and a quantitative loss factor is derived. The quantitative factors are also supplemented by certain qualitative loss factors reflecting management’s view of how losses may vary from those represented by quantitative loss rates. Qualitative loss factors, for each loan segment within the portfolio, incorporate consideration for a minimum to maximum range for qualitative loss factor derived from either the Company’s historical loss experience or peer group historical loss experience. Changes in these assumptions could have a material effect on the Company’s financial results.

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We identified auditing the qualitative component of the ACL on pooled loans in the commercial and commercial real estate loan segments as a critical audit matter because the methodology to determine the estimate of credit losses uses subjective judgments by management and is subject to material variability.

Performing audit procedures to evaluate the qualitative loss factors on the commercial and commercial real estate loan segments involved a high degree of auditor judgment and required significant effort, including the need to involve more experienced audit personnel including the use of internal specialists.

The primary procedures we performed to address this critical audit matter included:

Business Combination–** Fair Value of Acquired Loans**

As described in Note 2 to the consolidated financial statements, on June 1, 2025, the Company completed the acquisition of The First of Long Island Corporation for stock and cash consideration totaling $270,828,000. The acquisition was accounted for using the acquisition method of accounting, which requires management to record the assets and liabilities assumed at fair value on the acquisition date. The estimation of fair values related to acquired loans required management to make significant judgments and assumptions. The acquired loans were initially recorded at $2,882,951,000.

The fair value of the acquired loan portfolio was calculated on a pooled loan basis using discounted cash flow analysis for accruing loans and on an individual basis for nonaccrual loans. This analysis took into consideration the contractual terms of the loans and assumptions related to the credit risk, expected lifetime losses, qualitative factors, collateral values, discount rates, and other liquidity considerations to estimate projected cash flows. Acquired loans were evaluated to determine whether they met the definition of purchased credit deteriorated (“PCD”) based on indicators of more-than-insignificant credit deterioration since origination. For PCD loans, an allowance for credit losses (“ACL”) was established at acquisition date through a gross-up of amortized cost, with no provision for credit losses recognized at acquisition, and the remaining difference between amortized cost, net of ACL and fair value allocated to the loans on the acquisition date is recorded as a non-credit-related discount to be accreted into interest income over the life of the loans.

We identified auditing the fair value of acquired loans as a critical audit matter because it involved a high degree of auditor judgment and significant audit effort to evaluate the significant judgments made by management, including expected lifetime losses, discount rates, projected cash flows and PCD loan criteria, and the need to involve more experienced audit personnel including the use of internal specialists.

The primary procedures we performed to address this critical audit matter included:

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/s/Crowe LLP

We have served as the Company's auditor since 2014.

Livingston, New Jersey

February 24, 2026

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