United States securities and exchange commission logo September 21, 2020 Gregory Wong Chief Financial Officer QuinStreet, Inc. 950 Tower Lane, 6th Floor Foster City, California 94404 Re: QuinStreet, Inc. Form 10-K for Fiscal Year Ended June 30, 2020 Filed August 28, 2020 Form 8-K Furnished August 5, 2020 File No. 001-34628 Dear Mr. Wong: We have limited our review of your filing to the financial statements and related disclosures and have the following comments. In some of our comments, we may ask you to provide us with information so we may better understand your disclosure. Please respond to these comments within ten business days by providing the requested information or advise us as soon as possible when you will respond. If you do not believe our comments apply to your facts and circumstances, please tell us why in your response. After reviewing your response to these comments, we may have additional comments. Form 10-K for Fiscal Year Ended June 30, 2020 Item 7. Management's Discussion and Analysis Selected Quarterly Financial Data, page 44 1. We note you present "Adjusted EBITDA as a percentage of net revenue" on a quarterly basis. Please present the comparable GAAP measure with equal or greater prominence. Refer to Item 10(e)(1)(i)(A) of Regulation S-K and Question 102.10 of the staff s Compliance and Disclosure Interpretation on Non-GAAP Financial Measures ("C&DI s"). Form 8-K Furnished August 5, 2020 Exhibit 99.1 Fourth Quarter and Fiscal Year 2020 Results, page 1 2. When providing discussion of non-GAAP financial measures, please ensure that such Gregory Wong QuinStreet, Inc. September 21, 2020 Page 2 disclosure is accompanied by discussion of the corresponding GAAP measure with equal or greater prominence. For example, we noted you provide: Adjusted EBITDA as a percentage of revenue for the fourth quarter and fiscal year 2020 without providing discussion of the comparable GAAP measure. Discussion of your "delivered Adjusted EBITDA" without providing similar discussion regarding the comparable GAAP measure. Please refer to the guidance referenced in the comment above. In closing, we remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. You may contact Abe Friedman at 202-551-8298 or Theresa Brillant at 202-551-3307 with any questions. FirstName LastNameGregory Wong Sincerely, Comapany NameQuinStreet, Inc. Division of Corporation Finance September 21, 2020 Page 2 Office of Trade & Services FirstName LastName