QUINSTREET, INC

Report of Independent Regis tered Public Accounting Firm

To the Board of Directors and Stockholders of QuinStreet, Inc.

Opinions on the Financial Statements and Internal Control over Financial Reporting

We have audited the accompanying consolidated balance sheets of QuinStreet Inc. and its subsidiaries (the “Company”) as of June 30, 2026 and 2025, and the related consolidated statements of operations and comprehensive income (loss), of stockholders’ equity and of cash flows for each of the three years in the period ended June 30, 2026, including the related notes (collectively referred to as the “consolidated financial statements”). We also have audited the Company's internal control over financial reporting as of June 30, 2026, 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 consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of June 30, 2026 and 2025, and the results of its operations and its cash flows for each of the three years in the period ended June 30, 2026 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 June 30, 2026, based on criteria established in Internal Control - Integrated Framework (2013) issued by the COSO.

Basis for Opinions

The Company's management is responsible for these consolidated 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 Management's Report on Internal Control over Financial Reporting appearing under Item 9A. Our responsibility is to express opinions on the Company’s consolidated financial statements and 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 consolidated 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 consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated 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 consolidated 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 consolidated financial statements. 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.

As described in Management’s Report on Internal Control over Financial Reporting, management has excluded Siren Group AG (“HomeBuddy”) from its assessment of internal control over financial reporting as of June 30, 2026 because it was acquired by the Company in a purchase business combination during 2026. We have also excluded HomeBuddy from our audit of internal control over financial reporting. HomeBuddy is a wholly-owned subsidiary whose total assets and total revenues excluded from management’s assessment and our audit of internal control over financial reporting represent 5.5% and 6.9%, respectively, of the related consolidated financial statement amounts as of and for the year ended June 30, 2026.

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 (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) 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 (iii) 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 consolidated financial statements that were communicated or required to be communicated to the audit committee and that (i) relate to accounts or disclosures that are material to the consolidated financial statements and (ii) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.

Acquisition of HomeBuddy – Valuation of the Customer Relationships Intangible Asset

As described in Note 6 to the consolidated financial statements, on January 2, 2026, the Company completed the acquisition of HomeBuddy for the total purchase price of $179.7 million. Of the acquired intangible assets, $35.5 million of customer relationships was recorded. The fair value of the customer relationships was determined using the multi-period excess earnings method. The significant assumptions used by management in determining the preliminary fair value of the customer relationships intangible asset included revenue growth rates, gross margin, customer retention rate, and discount rate.

The principal considerations for our determination that performing procedures relating to the valuation of the customer relationships intangible asset acquired in the acquisition of HomeBuddy is a critical audit matter are (i) the significant judgment by management when developing the fair value estimate of the customer relationships acquired; (ii) a high degree of auditor judgment, subjectivity, and effort in performing procedures and evaluating management’s significant assumptions related to gross margin and customer retention rate; and (iii) the audit effort involved the use of professionals with specialized skill and knowledge.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included testing the effectiveness of controls relating to the acquisition accounting, including controls over management’s valuation of the customer relationships acquired. These procedures also included, among others (i) reading the purchase agreement; (ii) testing management’s process for developing the fair value estimate of the customer relationships acquired; (iii) evaluating the appropriateness of the multi-period excess earnings method used by management; (iv) testing the completeness and accuracy of the underlying data used in the multi-period excess earnings method; and (v) evaluating the reasonableness of the significant assumptions used by management related to gross margin and customer retention rate. Evaluating management’s assumption related to gross margin involved considering (i) the current and past performance of the HomeBuddy business; (ii) the consistency with external market and industry data; and (iii) whether the assumption was consistent with evidence obtained in other areas of the audit. Professionals with specialized skill and knowledge were used to assist in evaluating (i) the appropriateness of the multi-period excess earnings method and (ii) the reasonableness of the customer retention rate assumption.

As described in Notes 2 and 3 to the consolidated financial statements, the Company derives revenue primarily from fees earned through the delivery of qualified inquiries such as clicks, leads, calls, applications, or customers. The Company recognizes revenue when the Company transfers promised goods or services to clients in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those goods or services. The Company has assessed the services promised in its contracts with clients and has identified one performance obligation, which is a series of distinct services. Depending on the client's needs, these services consist of a specified or an unlimited number of clicks, leads, calls, applications, or customers to be delivered over a period of time. The Company satisfies these performance obligations over time as the services are provided. The transaction price for any given period is fixed and no estimation of variable consideration is required. The Company does not promise to provide any other significant goods or services to its clients. The Company recorded total net revenue of $1.3 billion for the year ended June 30, 2026.

The principal considerations for our determination that performing procedures relating to revenue recognition is a critical audit matter are a high degree of auditor effort in performing procedures and evaluating audit evidence related to the Company's revenue recognition.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included testing the effectiveness of controls relating to the revenue recognition process. These procedures also included, among others (i) evaluating certain revenue transactions, on a sample basis, by recalculating the revenue recognized and by obtaining and inspecting source documents, including executed contracts, invoices, delivery documents, and cash receipts, where applicable; (ii) evaluating certain revenue transactions by testing the issuance and settlement of invoices and credit memos, tracing transactions not settled to a detailed listing of accounts receivable, and testing the completeness and accuracy of certain data provided by management; and (iii) confirming, on a sample basis, outstanding customer invoice balances as of year-end and obtaining and inspecting source documents, including executed contracts, invoices, delivery documents, and subsequent cash receipts, where applicable, for confirmations not returned.

/s/PricewaterhouseCoopers LLP

San Jose, California

August 26, 2026

We have served as the Company’s auditor since 2000.