QNST / QuinStreet, Inc. - تصريحات هيئة الأوراق المالية والبورصات، التقرير السنوي، بيان الوكيل

شركة كوين ستريت
US ˙ NasdaqGS ˙ US74874Q1004

الإحصائيات الأساسية
LEI 549300TP8MFBFPOS4Y78
CIK 1117297
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to QuinStreet, Inc.
SEC Filings (Chronological Order)
توفر هذه الصفحة قائمة كاملة ومرتبة ترتيبًا زمنيًا لتصريحات هيئة الأوراق المالية والبورصات، باستثناء تصريحات الملكية التي نقدمها في مكان آخر.
August 21, 2025 EX-21.1

List of Subsidiaries of QuinStreet, Inc.

Exhibit 21.1 List of Subsidiaries of QuinStreet, Inc. Name of Subsidiary Jurisdiction of Organization QuinStreet, LLC Illinois HQ Publications, LLC Illinois OK Content-Rich Web Properties, LLC Oklahoma V-P.D.C.- Web, LLC Wyoming QuinStreet Software India, Pvt., Ltd. India NarrowCast Group, LLC Kentucky QuinStreet India Marketing and Media, Pvt., Ltd. India Silverlode Holdings, LLC Nevada Carson Ci

August 21, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-34628 QuinStreet, Inc. (Exact name of registrant as specified in its

August 7, 2025 EX-99.1

QuinStreet Reports Fiscal Fourth Quarter and FY2025 Results

Exhibit 99.1 QuinStreet Reports Fiscal Fourth Quarter and FY2025 Results • FYQ4 Revenue up 32% YoY to $262 million, with strong margin growth • FYQ4 Auto Insurance revenue up 62% YoY; Home Services revenue up 21% • FY25 Revenue grew 78% to $1.1 billion • FY25 Net Income grew to $4.7 million, from Net Loss of $31.3 million in FY24 • FY25 Adj. EBITDA grew 299% to $81.3 million, from $20.4 million in

August 7, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 7, 2025 QUINSTREET, INC. (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 7, 2025 QUINSTREET, INC.

May 8, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exact

May 7, 2025 EX-99.1

QuinStreet Reports Results for Third Quarter Fiscal 2025

Exhibit 99.1 QuinStreet Reports Results for Third Quarter Fiscal 2025 • Revenue up 60% YoY to $270 million in FYQ3 • Financial Services revenue up 78% YoY, Auto Insurance revenue up 165% YoY • Record Home Services revenue, up 21% YoY • Strong cash flows and balance sheet, cash over $80 million and no bank debt • Profitability continued to expand in FYQ3, expected to expand further in FYQ4 • Mainta

May 7, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2025 QUINSTREET, INC.

February 7, 2025 10-Q/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q/A ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (

February 7, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exa

February 6, 2025 EX-99.1

QuinStreet Reports Record Results for Second Quarter Fiscal 2025

Exhibit 99.1 QuinStreet Reports Record Results for Second Quarter Fiscal 2025 • Record quarterly revenue of $283 million, up 130% YoY • Record auto insurance quarterly revenue, up 615% YoY • Non-insurance revenue grew 15% YoY • Raising outlook for full fiscal year 2025 revenue and Adjusted EBITDA FOSTER CITY, CA – February 6, 2025 – QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketpl

February 6, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 6, 2025 QUINSTREET, INC.

February 5, 2025 CORRESP

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United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

November 8, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Ex

November 4, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 4, 2024 QUINSTREET, INC. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 4, 2024 QUINSTREET, INC.

November 4, 2024 EX-99.1

QuinStreet Reports Record Results for First Quarter Fiscal 2025

Exhibit 99.1 QuinStreet Reports Record Results for First Quarter Fiscal 2025 • Record quarterly revenue of $279 million, up 125% YoY • Record auto insurance quarterly revenue, up 664% YoY; Strong demand continues • Record home services quarterly revenue, up 32% YoY • Raising full fiscal year 2025 revenue and Adjusted EBITDA outlook FOSTER CITY, CA – November 4, 2024 – QuinStreet, Inc. (Nasdaq: QNS

November 1, 2024 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 31, 2024 QuinStreet, Inc.

September 20, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

September 20, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defin

August 21, 2024 EX-10.41

Sixth Amendment to Office Lease Metro Center, dated March 16, 2023 between QuinStreet, Inc. and Hudson Metro Center, LLC

Exhibit 10.41 SIXTH AMENDMENT THIS SIXTH AMENDMENT (this "Amendment") is made and entered into as of March 16, 2023, by and between HUDSON METRO CENTER, LLC, a Delaware limited liability company ("Landlord"), and QUINSTREET, INC., a Delaware corporation ("Tenant"). RECITALS A. Landlord (as successor in interest to CA-Metro Center Limited Partnership, a Delaware limited partnership) and Tenant are

August 21, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-34628 QuinStreet, Inc. (Exact name of registrant as specified in its

August 21, 2024 EX-97.1

QuinStreet, Inc. Financial Restatement Compensation Recoupment Policy

Exhibit 97.1 QUINSTREET, INC. FINANCIAL RESTATEMENT COMPENSATION RECOUPMENT POLICY This QuinStreet, Inc. Financial Restatement Compensation Recoupment Policy (the “Policy”) has been adopted by the Board of Directors (the “Board”) of QuinStreet, Inc. (the “Company”) on October 27, 2023. This Policy provides for the recoupment of certain executive compensation in the event of an accounting restateme

August 21, 2024 EX-19.2

QuinStreet, Inc. Trading Window and Trade Pre-Clearance Policy

Exhibit 19.2 QUINSTREET, INC. TRADING WINDOW AND TRADE PRE-CLEARANCE POLICY The Board of Directors of QuinStreet, Inc. (the “Company”) believes that all employees and directors of the Company (collectively, the “Restricted Persons”) will be aware of information that could be material to a stockholder’s investment decision, but which in the best interests of the Company should not be disclosed unti

August 21, 2024 EX-19.1

QuinStreet, Inc. Policy Against Trading on the Basis of Inside Information

Exhibit 19.1 QUINSTREET, INC. POLICY AGAINST TRADING ON THE BASIS OF INSIDE INFORMATION Background & Purpose of Policy Trading securities while in possession of material non-public information (“Inside Information”), or tipping others who then trade securities (“tippees”) while in possession of Inside Information, is considered “insider trading” and is against the law. The purpose of this policy i

August 21, 2024 EX-19.3

QuinStreet, Inc. Rule 10b5-a Trading Guidelines

Exhibit 19.3 QUINSTREET, INC. RULE 10b5-1 TRADING PLAN GUIDELINES AND FAQS Section 10(b) of, and Rule 10b-5 under, the Securities Exchange Act of 1934, as amended (the “Exchange Act”) prohibit “insider trading,” generally defined as buying or selling securities while in possession of material, non-public information. Rule 10b5-1 provides an affirmative defense to allegations of insider trading whe

August 21, 2024 EX-21.1

List of Subsidiaries

Exhibit 21.1 List of Subsidiaries of QuinStreet, Inc. Name of Subsidiary Jurisdiction of Organization QuinStreet, LLC Illinois HQ Publications, LLC Illinois OK Content-Rich Web Properties, LLC Oklahoma V-P.D.C.- Web, LLC Wyoming 3401486 Nova Scotia Company Canada QuinStreet Software India, Pvt., Ltd. India NarrowCast Group, LLC Kentucky QuinStreet India Marketing and Media, Pvt., Ltd. India Silver

August 8, 2024 EX-99.1

QuinStreet Reports Fiscal Fourth Quarter and FY2024 Results

Exhibit 99.1 QuinStreet Reports Fiscal Fourth Quarter and FY2024 Results • Record quarterly revenue of $198 million, up 52% YoY • Seeing significantly improved profitability with operating leverage • Steep re-ramp of auto insurance revenue continues and is broad-based • Expect strong FY2025 revenue growth and further margin expansion • Strong cash flow and balance sheet, no bank debt FOSTER CITY,

August 8, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 8, 2024 QUINSTREET, INC.

May 9, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exact

May 8, 2024 EX-99.1

QuinStreet Reports Results for Third Quarter Fiscal 2024

Exhibit 99.1 QuinStreet Reports Results for Third Quarter Fiscal 2024 • The steep re-ramp of Auto Insurance carrier spending has begun • Auto Insurance revenue is expected to continue to ramp in coming quarters • Continued total company revenue growth, further margin expansion expected in FYQ4 • Strong growth & margin expansion expected in fiscal year 2025 which begins July 1 FOSTER CITY, CA – May

May 8, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 8, 2024 QUINSTREET, INC.

February 13, 2024 SC 13G/A

QNST / QuinStreet, Inc. / THRIVENT FINANCIAL FOR LUTHERANS Passive Investment

SC 13G/A 1 tfl13ga1quinstreet.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1 )* QuinStreet, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the r

February 13, 2024 SC 13G/A

QNST / QuinStreet, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 4)* Name of issuer: QuinStreet Inc Title of Class of Securities: Common Stock CUSIP Number: 74874Q100 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule

February 8, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exa

February 7, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 7, 2024 QUINSTREET, INC.

February 7, 2024 EX-99.1

QuinStreet Reports Results for Second Quarter Fiscal 2024

Exhibit 99.1 QuinStreet Reports Results for Second Quarter Fiscal 2024 • Continued strong execution and results in December quarter • The significant positive inflection in Auto Insurance has begun • Expect a strong sequential Company revenue ramp in fiscal Q3 and again in Q4 • Expect adjusted EBITDA margins to expand rapidly with revenue growth FOSTER CITY, CA – February 7, 2024 – QuinStreet, Inc

February 5, 2024 SC 13G/A

QNST / QuinStreet, Inc. / Private Capital Management, LLC - AMENDMENT NO. 10 Passive Investment

SC 13G/A 1 qnst25240sc13ga10.htm AMENDMENT NO. 10 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 10)* Quinstreet, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of This Statement) Check the appropriate bo

November 3, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Ex

November 2, 2023 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 2, 2023 (October 27, 2023) QUINSTREET, INC.

November 1, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 1, 2023 QUINSTREET, INC.

November 1, 2023 EX-99.1

QuinStreet Reports Results for First Quarter Fiscal 2024

Exhibit 99.1 QuinStreet Reports Results for First Quarter Fiscal 2024 • Quarterly revenue of $124 million, exceeding consensus • Strong performance and outlook in non-insurance client verticals • Expect a significant positive inflection in insurance to begin in January • Demonstrated resilient financial model, strong balance sheet, no bank debt FOSTER CITY, CA – November 1, 2023 – QuinStreet, Inc.

September 15, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

September 15, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defin

August 21, 2023 EX-21.1

List of Subsidiaries

Exhibit 21.1 List of Subsidiaries of QuinStreet, Inc. Name of Subsidiary Jurisdiction of Organization QuinStreet, LLC Illinois HQ Publications, LLC Illinois OK Content-Rich Web Properties, LLC Oklahoma V-P.D.C.- Web, LLC Wyoming 3401486 Nova Scotia Company Canada QuinStreet Software India, Pvt., Ltd. India NarrowCast Group, LLC Kentucky QuinStreet India Marketing and Media, Pvt., Ltd. India Silver

August 21, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-34628 QuinStreet, Inc. (Exact name of registrant as specified in its

August 9, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 9, 2023 QUINSTREET, INC.

August 9, 2023 EX-99.1

QuinStreet Reports Fiscal Fourth Quarter and FY2023 Result

Exhibit 99.1 QuinStreet Reports Fiscal Fourth Quarter and FY2023 Result • Quarterly revenue of $130 million, exceeding outlook • Continued strong performance in non-insurance client verticals • Continued disciplined margin and expense management • Solidly cash flow positive, strong balance sheet, no bank debt FOSTER CITY, CA – August 9, 2023 – QuinStreet, Inc. (Nasdaq: QNST), a leader in performan

May 16, 2023 SC 13G/A

QNST / QuinStreet Inc / Private Capital Management, LLC - AMENDMENT NO. 9 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 9)* Quinstreet, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74874Q100 (CUSIP Number) May 12, 2023 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to which this Schedule

May 5, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exact

May 3, 2023 EX-99

QuinStreet Reports Results for Third Quarter Fiscal Year 2023

Exhibit 99.1 QuinStreet Reports Results for Third Quarter Fiscal Year 2023 • Record quarterly revenue of $173 million, up 15% YoY, exceeding outlook • Strong early beginning to auto insurance re-ramp • Non-insurance revenue up 34% YoY, representing 58% of total • Adjusted EBITDA of $9 million, up 30% YoY, exceeding outlook FOSTER CITY, CA – May 3, 2023 – QuinStreet, Inc. (Nasdaq: QNST), a leader i

May 3, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 3, 2023 QUINSTREET, INC. (Exact

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 3, 2023 QUINSTREET, INC.

February 14, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 13, 2023 QUINSTREET, INC.

February 10, 2023 SC 13G/A

QNST / QuinStreet Inc / Private Capital Management, LLC - AMENDMENT NO. 8 Passive Investment

SC 13G/A 1 z113230sc13ga8.htm AMENDMENT NO. 8 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 8)* Quinstreet, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to

February 9, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exa

February 9, 2023 SC 13G/A

QNST / QuinStreet Inc / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01749-quinstreetinc.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 3)* Name of issuer: QuinStreet Inc. Title of Class of Securities: Common Stock CUSIP Number: 74874Q100 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the

February 8, 2023 SC 13G

QNST / QuinStreet Inc / THRIVENT FINANCIAL FOR LUTHERANS Passive Investment

SC 13G 1 tfl13gquinstreet.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* QuinStreet, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pu

February 8, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 8, 2023 QUINSTREET, INC.

February 8, 2023 EX-99.1

QuinStreet Reports Second Quarter Fiscal 2023 Results

Exhibit 99.1 QuinStreet Reports Second Quarter Fiscal 2023 Results • Revenue and adjusted EBITDA exceeded outlook in FYQ2 • Continued strong performance in Home Services & Credit-driven verticals • Insurance revenue up sharply in January, as predicted • Solidly adjusted EBITDA positive, strong balance sheet, no bank debt • Expect accelerating revenue growth and expanding margins FOSTER CITY, CA –

November 4, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Ex

November 3, 2022 EX-99.1

QuinStreet Reports First Quarter Fiscal 2023 Results

Exhibit 99.1 QuinStreet Reports First Quarter Fiscal 2023 Results ? FYQ1 revenue of $143.6 MM, exceeding Company outlook ? Continued strong performance in Home Services & Credit-driven client verticals ? Insurance revenue as expected, positive inflection still projected for January ? Solidly cash flow positive, strong balance sheet, no bank debt FOSTER CITY, CA ? November 3, 2022 ? QuinStreet, Inc

November 3, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 3, 2022 QUINSTREET, INC.

November 1, 2022 8-K

Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 31, 2022 QuinStreet, Inc.

September 20, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) x Defin

September 20, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment no.  )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment no.??) Filed by the Registrant ????????????????Filed by a party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? ? Confidential, for Use of the Commission

August 22, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended June 30, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-34628 QuinStreet, Inc. (Exact name of registrant as specified in its

August 3, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 3, 2022 QUINSTREET, INC.

August 3, 2022 EX-99.1

QuinStreet Reports Fiscal Fourth Quarter and 2022 Results

Exhibit 99.1 QuinStreet Reports Fiscal Fourth Quarter and 2022 Results ? FYQ4 revenue of $146.5MM, a decrease of only 3% year-over-year ? Insurance client revenue stabilized in FYQ4 ? Non-Insurance revenue was 56% of total and grew 26% YoY in FYQ4 ? Repurchased 1.7M shares of common stock in FYQ4 ? Solidly cash flow positive, with a strong balance sheet FOSTER CITY, CA ? August 3, 2022 ? QuinStree

May 6, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exact

May 4, 2022 EX-99.1

QuinStreet Reports Third Quarter Fiscal Year 2022 Results

Exhibit 99.1 QuinStreet Reports Third Quarter Fiscal Year 2022 Results ? FYQ3 Revenue of $151MM, down 2% YoY ? Insurance client revenue appears to be at or near a bottom ? Non-Insurance revenue was 50% of total and grew 35% YoY in FYQ3 ? Board authorizes $40MM share repurchase program FOSTER CITY, CA ? May 04, 2022 ? QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketplaces and technol

May 4, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 4, 2022 QUINSTREET, INC.

February 10, 2022 SC 13G/A

QNST / QuinStreet Inc / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 2)* Name of issuer: QuinStreet Inc. Title of Class of Securities: Common Stock CUSIP Number: 74874Q100 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ??Rul

February 9, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exa

February 8, 2022 EX-99.1

QuinStreet Reports Second Quarter Fiscal Year 2022 Results

Exhibit 99.1 QuinStreet Reports Second Quarter Fiscal Year 2022 Results ? FYQ2 Revenue of $125MM, down 7% YoY on lower insurance client spending ? Insurance spending bounced back strongly in January, but remains volatile ? Non-Insurance revenue grew 36% YoY in FYQ2, strength expected to continue ? QRP revenue is now expected to exceed $1MM per month by June FOSTER CITY, CA ? February 08, 2022 ? Qu

February 8, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 8, 2022 QUINSTREET, INC.

February 4, 2022 SC 13G/A

QNST / QuinStreet Inc / Private Capital Management, LLC - AMENDMENT NO. 7 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 7)* Quinstreet, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to which this Sche

November 4, 2021 EX-99.1

QuinStreet, Inc. 2021 Employee Stock Purchase Plan

Exhibit 99.1 QuinStreet, INc. 2021 EMPLOYEE STOCK PURCHASE PLAN 1. Purpose. The purpose of the Plan is to provide employees of the Company and its Designated Companies with an opportunity to purchase Common Stock through accumulated Contributions. The Company intends for the Plan to have two components: a Code Section 423 Component (?423 Component?) and a non-Code Section 423 Component (?Non-423 C

November 4, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Ex

November 4, 2021 S-8

As filed with the Securities and Exchange Commission on November 4, 2021

As filed with the Securities and Exchange Commission on November 4, 2021 Registration No.

November 3, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 3, 2021 QUINSTREET, INC.

November 3, 2021 EX-99.1

QuinStreet Reports First Quarter Fiscal Year 2022 Results

Exhibit 99.1 QuinStreet Reports First Quarter Fiscal Year 2022 Results ? Reports record quarterly revenue of $160 million ? Grows revenue 15% year-over-year, 25% excluding divested businesses ? Delivers at least double-digit revenue growth rates in all client verticals ? Reports excellent progress on product and growth initiatives ? Raises full fiscal year outlook FOSTER CITY, CA ? November 03, 20

October 26, 2021 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 25, 2021 QUINSTREET, INC.

September 10, 2021 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment no.  )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment no.??) Filed by the Registrant ????????????????Filed by a party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? ? Confidential, for Use of the Commission

September 10, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 7, 2021 QUINSTREET, INC.

September 10, 2021 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment no.  )

? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment no.??) ? Filed by the Registrant?? ? ? Filed by a party other than the Registrant?? ? Check the appropriate box: ? Preliminary Proxy Statement ? ? Confidential, for Use of the Commission Only (as permitted by

August 26, 2021 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended June 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-34628 QuinStreet, Inc. (Exact name of registrant as specified in its

August 4, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 4, 2021 QUINSTREET, INC.

August 4, 2021 EX-99.1

QuinStreet Reports Fiscal Fourth Quarter and 2021 Results

Exhibit 99.1 QuinStreet Reports Fiscal Fourth Quarter and 2021 Results ? Record FYQ4 revenue of $151 million, growth accelerates to 29% ? FYQ4 revenue growth excluding divested businesses accelerates to 47% ? Grows net income 151%, adjusted EBITDA 71% in FYQ4 ? Momentum and strong performance expected to continue in FY22 FOSTER CITY, CA ? August 04, 2021 ? QuinStreet, Inc. (Nasdaq: QNST), a leader

July 27, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 26, 2021 QUINSTREET, INC.

May 7, 2021 10-Q

Quarterly Report - Q3'21 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exact

May 5, 2021 EX-99.1

QuinStreet Reports Record Results in Fiscal Third Quarter

Exhibit 99.1 QuinStreet Reports Record Results in Fiscal Third Quarter ? Reports record quarterly revenue of over $153 million ? Grows revenue excluding divested businesses 39% year-over-year ? Delivers Adjusted EBITDA growth of 65% year-over-year ? Expects momentum and strong performance to continue FOSTER CITY, CA ? May 05, 2021 ? QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketpl

May 5, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2021 QUINSTREET, INC.

April 29, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 28, 2021 QUINSTREET, INC.

February 12, 2021 SC 13G/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 10)* QuinStreet, Inc. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securitie

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 10)* QuinStreet, Inc. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate

February 12, 2021 EX-99.1

SCHEDULE 13G

EX-99.1 SCHEDULE 13G CUSIP No. 74874Q100 Exhibit 99.1 Pursuant to Rule 13d-1(k) (1) (iii) of Regulation 13D-G of the General Rules and Regulations of the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended, the undersigned agree that the statement to which this Exhibit is attached is filed on behalf of each of them in the capacities set forth herein below. Date

February 10, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 1)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 1)* Name of issuer: QuinStreet Inc. Title of Class of Securities: Common Stock CUSIP Number: 74874Q100 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rul

February 5, 2021 10-Q

Quarterly Report - QNST Q2'21

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exa

February 5, 2021 SC 13G/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 6)*

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 6)* Quinstreet, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to which this Sche

February 3, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 3, 2021 QUINSTREET, INC.

February 3, 2021 EX-99.1

QuinStreet Reports Second Quarter Fiscal Year 2021 Results

Exhibit 99.1 QuinStreet Reports Second Quarter Fiscal Year 2021 Results • Reports record fiscal Q2 revenue of $135.0 million • Grows revenue excluding divested businesses 36% year-over-year • Delivers Auto Insurance revenue growth of 57% year-over-year • Outperforms expectations for Modernize Home Services acquisition • Expects momentum and strong performance to continue • Guides to all-time recor

November 6, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Ex

October 30, 2020 8-K

Submission of Matters to a Vote of Security Holders - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 29, 2020 QUINSTREET, INC.

October 28, 2020 EX-99.1

QuinStreet Reports First Quarter Fiscal Year 2021 Financial Results

Exhibit 99.1 QuinStreet Reports First Quarter Fiscal Year 2021 Financial Results • Delivers record quarterly revenue of $139.3 million • Accelerates Auto Insurance revenue growth to 57% year-over-year • Acquires Modernize to increase scale and capabilities in Home Services • Divests Education client vertical to narrow focus to best opportunities • Expects strong performance to continue in fiscal Q

October 28, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 28, 2020 QUINSTREET, INC.

October 19, 2020 EX-99.1

QuinStreet Announces Preliminary First Quarter Fiscal 2021 Financial Results and Earnings Conference Call Date

Exhibit 99.1 QuinStreet Announces Preliminary First Quarter Fiscal 2021 Financial Results and Earnings Conference Call Date FOSTER CITY, CA – October 19, 2020 – QuinStreet, Inc. (Nasdaq: QNST), a leader in providing performance marketplace technologies and services to the FinTech, financial services and home services industries, today announced preliminary financial results for the first quarter o

October 19, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - QNST-8K-Q121-EARNINGS (PRE-EARNINGS RELEASE)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 19, 2020 QUINSTREET, INC.

September 28, 2020 CORRESP

-

United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

September 15, 2020 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment no. ) Filed by the Registrant x Filed by a party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)

September 15, 2020 DEF 14A

- DEF 14A

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment no.  ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitt

August 28, 2020 10-K

Annual Report - 10-K

K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended June 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-34628 QuinStreet, Inc. (Exact name of registrant as specified in it

August 5, 2020 EX-99.1

QuinStreet Reports Fourth Quarter and Fiscal Year 2020 Financial Results

Exhibit 99.1 QuinStreet Reports Fourth Quarter and Fiscal Year 2020 Financial Results FOSTER CITY, CA – August 5, 2020 – QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketplace products and technologies, today announced financial results for the fourth quarter and fiscal year ended June 30, 2020. For the fourth quarter, the Company reported revenue of $117.0 million. Revenue excluding

August 5, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 5, 2020 QUINSTREET, INC.

July 31, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 29, 2020 QUINSTREET, INC.

May 8, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exact

May 6, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 6, 2020 QUINSTREET, INC.

May 6, 2020 EX-99.1

QuinStreet Reports Third Quarter Fiscal Year 2020 Financial Results

Exhibit 99.1 QuinStreet Reports Third Quarter Fiscal Year 2020 Financial Results FOSTER CITY, CA – May 6, 2020 – QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketplace products and technologies, today announced financial results for the third quarter ended March 31, 2020. For the third quarter, the Company reported record quarterly revenue of $128.7 million, an increase of 11% year-o

February 14, 2020 SC 13G/A

QNST / QuinStreet, Inc. / Park West Asset Management LLC - AMENDMENT NO. 2 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2—Exit Filing)* QUINSTREET, INC. (Name of Issuer) Common Stock, $0.001 par value per share (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designat

February 13, 2020 SC 13G/A

QNST / QuinStreet, Inc. / Valenti Douglas - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 9)* QuinStreet, Inc. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate t

February 13, 2020 EX-99.1

Agreement Pursuant to Rule 13d-1(k)(1)(iii)

EX-99.1 SCHEDULE 13G CUSIP No. 74874Q100 Exhibit 99.1 Pursuant to Rule 13d-1(k) (1) (iii) of Regulation 13D-G of the General Rules and Regulations of the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended, the undersigned agree that the statement to which this Exhibit is attached is filed on behalf of each of them in the capacities set forth herein below. Date

February 11, 2020 SC 13G

QNST / QuinStreet, Inc. / VANGUARD GROUP INC - SCHEDULE 13G Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 Name of issuer: QuinStreet Inc Title of Class of Securities: Common Stock CUSIP Number: 74874Q100 Date of Event Which Requires Filing of this Statement: December 31, 2019 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule 13d-1(b) ☐ Rule 13d

February 7, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exa

February 7, 2020 SC 13G/A

QNST / QuinStreet, Inc. / Private Capital Management, LLC - AMENDMENT NO. 5 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 5)* Quinstreet, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to which this Sche

February 5, 2020 EX-99.1

QuinStreet Reports Second Quarter Fiscal Year 2020 Financial Results

Exhibit 99.1 QuinStreet Reports Second Quarter Fiscal Year 2020 Financial Results • Reports double digit growth and record FYQ2 revenue • Continues Goldman Sachs led process to review strategic alternatives • Launching 6 QRP clients; reports strong advanced pipeline of additional QRP client prospects FOSTER CITY, CA – February 5, 2020 - QuinStreet, Inc. (Nasdaq: QNST), a leader in performance mark

February 5, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 5, 2020 QUINSTREET, INC.

November 20, 2019 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 15, 2019 QUINSTREET, INC.

November 8, 2019 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Ex

November 7, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 7, 2019 QUINSTREET, INC.

November 7, 2019 EX-99.1

QuinStreet Reports First Quarter Fiscal Year 2020 Financial Results

Exhibit 99.1 QuinStreet Reports First Quarter Fiscal Year 2020 Financial Results • Reports double-digit growth and record quarterly revenue • Maintains FY20 revenue and EBITDA outlook • Initiates Goldman Sachs-led process to review strategic alternatives FOSTER CITY, CA – November 7, 2019 - QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketplace products and technologies, today announ

October 4, 2019 DEFA14A

QNST / QuinStreet, Inc. DEFA14A - - DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment no. ) Filed by the Registrant x Filed by a party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)

October 4, 2019 DEF 14A

QNST / QuinStreet, Inc. DEF 14A - - DEF 14A

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment no.  ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitt

August 29, 2019 S-8

QNST / QuinStreet, Inc. S-8 - - S-8

S-8 As filed with the Securities and Exchange Commission on August 29, 2019 Registration No.

August 29, 2019 10-K

Annual Report - 10-K

K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended June 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-34628 QuinStreet, Inc. (Exact name of registrant as specified in it

August 8, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 8, 2019 QUINSTREET, INC.

August 8, 2019 EX-99.1

QuinStreet Reports Fourth Quarter and Fiscal Year 2019 Financial Results

Exhibit 99.1 QuinStreet Reports Fourth Quarter and Fiscal Year 2019 Financial Results FOSTER CITY, CA – August 8, 2019 - QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketplace products and technologies, today announced financial results for the fourth quarter and fiscal year ended June 30, 2019. For the fourth quarter, the Company reported record quarterly revenue of $122.0 million,

May 10, 2019 10-Q

QNST / QuinStreet, Inc. 10-Q Quarterly Report Q3'19 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exact

May 9, 2019 EX-99.1

QuinStreet Reports Third Quarter Fiscal 2019 Financial Results

Exhibit 99.1 QuinStreet Reports Third Quarter Fiscal 2019 Financial Results • Reports quarterly revenue of $116.2 million • Expects full FY2019 revenue growth of about 15% • Expects strong sequential revenue growth in FYQ4 to $128 to $132 million • Annualized FYQ4 revenue forecast already implies double-digit growth and further margin expansion in FY2020 FOSTER CITY, CA – May 9, 2019 - QuinStreet,

May 9, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 9, 2019 QUINSTREET, INC.

February 25, 2019 SC 13G/A

QNST / QuinStreet, Inc. / Park West Asset Management LLC - QUINSTREET AMENDMENT NO. 1 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* QUINSTREET, INC. (Name of Issuer) Common Stock, $0.001 par value per share (Title of Class of Securities) 74874Q100 (CUSIP Number) February 13, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule p

February 25, 2019 EX-1

JOINT FILING AGREEMENT

Exhibit 1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of them of a statement on Schedule 13G (including amendments thereto) with respect to the shares of Common Stock, $0.

February 21, 2019 EX-1

JOINT FILING AGREEMENT

Exhibit 1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of them of a statement on Schedule 13G (including amendments thereto) with respect to the shares of Common Stock, $0.

February 21, 2019 SC 13G

QNST / QuinStreet, Inc. / Park West Asset Management LLC - QUINSTREET 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* QUINSTREET, INC. (Name of Issuer) Common Stock, $0.001 par value per share (Title of Class of Securities) 74874Q100 (CUSIP Number) February 12, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pu

February 13, 2019 SC 13G/A

QNST / QuinStreet, Inc. / Valenti Douglas - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 8)* QuinStreet, Inc. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate t

February 13, 2019 EX-99.1

Pursuant to Rule

EX-99.1 Exhibit 99.1 Pursuant to Rule 13d-1(k) (1) (iii) of Regulation 13D-G of the General Rules and Regulations of the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended, the undersigned agree that the statement to which this Exhibit is attached is filed on behalf of each of them in the capacities set forth herein below. Date: February 13, 2019 DOUGLAS J. VA

February 11, 2019 10-Q

QNST / QuinStreet, Inc. Q2'19 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2018 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exa

February 8, 2019 SC 13G/A

QNST / QuinStreet, Inc. / Private Capital Management, LLC - AMENDMENT NO. 4 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 4 )* Quinstreet, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to which this Sch

February 7, 2019 EX-99.1

QuinStreet Reports Strong Second Quarter Fiscal 2019 Financial Results

EX-99.1 Exhibit 99.1 QuinStreet Reports Strong Second Quarter Fiscal 2019 Financial Results — Reports revenue growth of 19% — Grows adjusted EBITDA 42% — Grows adjusted net income 76% — Delivers record fiscal Q2 revenue FOSTER CITY, CA – February 7, 2019 — QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketplace products and technologies, today announced financial results for the fisca

February 7, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 7, 2019 QUINSTREET, INC.

December 17, 2018 8-K/A

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K/A (Amendment No.

December 17, 2018 EX-99.3

UNAUDITED PRO FORMA COMBINED FINANCIAL STATEMENTS

Exhibit 99.3 UNAUDITED PRO FORMA COMBINED FINANCIAL STATEMENTS On October 1, 2018, pursuant to a Share Purchase Agreement (the “Share Purchase Agreement”) by and among QuinStreet, Inc. (the “Company”), AmOne Corp. (“AmOne”) and Rod Romero (the “Seller”) entered into on October 1, 2018, the Company acquired all of the issued and outstanding capital stock of AmOne from the Seller (the “Closing”). Th

December 17, 2018 EX-99.2

AMONE CORP. INTERIM FINANCIAL STATEMENTS SEPTEMBER 30, 2018 AND 2017 TABLE OF CONTENTS

Exhibit 99.2 AMONE CORP. INTERIM FINANCIAL STATEMENTS SEPTEMBER 30, 2018 AND 2017 TABLE OF CONTENTS Interim Financial Statements Balance Sheets 3 Statements of Operations 4 Statements of Cash Flows 5 Notes to Interim Financial Statements 6 2 AMONE CORP. BALANCE SHEETS (In thousands, except share data) (Unaudited) September 30, December 31, 2018 2017 Assets Current assets: Cash $ 889 $ 1,493 Accoun

December 17, 2018 EX-99.1

AMONE CORP. FINANCIAL STATEMENTS INDEPENDENT AUDITOR’S REPORT DECEMBER 31, 2017 TABLE OF CONTENTS

Exhibit 99.1 AMONE CORP. FINANCIAL STATEMENTS AND INDEPENDENT AUDITOR’S REPORT DECEMBER 31, 2017 TABLE OF CONTENTS Independent Auditor’s Report 3 Financial Statements Balance Sheet 4 Statement of Operations 5 Statement of Stockholder’s Equity 6 Statement of Cash Flows 7 Notes to Financial Statements 8 2 Independent Auditor’s Report Board of Directors AmOne Corp Plantation, Florida We have audited

November 9, 2018 EX-10.37

Forms of Performance-Based Restricted Stock Unit (RSU) Grant Notice and Agreement under 2010 Equity Incentive Plan with Revenue and Adjusted EBITDA Performance Metrics (for executive officer).

Exhibit 10.37 QuinStreet, Inc. Performance-Based Restricted Stock Unit (RSU) Grant Notice 2010 Equity Incentive Plan QuinStreet, Inc. (the “Company”), pursuant to its 2010 Equity Incentive Plan (the “Plan”), hereby grants to you as the Participant named below a Performance-Based Restricted Stock Unit Award with respect to the number of shares of the Company’s Common Stock set forth below. This Per

November 9, 2018 EX-10.36

Forms of Performance-Based Restricted Stock Unit (RSU) Grant Notice and Agreement under 2010 Equity Incentive Plan with Revenue and Adjusted EBITDA Performance Metrics (for non-executive officer employees).

EX-10.36 2 qnst-ex1036331.htm EX-10.36 Exhibit 10.36 QuinStreet, Inc. Performance-Based Restricted Stock Unit (RSU) Grant Notice 2010 Equity Incentive Plan QuinStreet, Inc. (the “Company”), pursuant to its 2010 Equity Incentive Plan (the “Plan”), hereby grants to you as the Participant named below a Performance-Based Restricted Stock Unit Award with respect to the number of shares of the Company’s

November 9, 2018 10-Q

QNST / QuinStreet, Inc. QNST- Q1-20180930 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2018 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Ex

November 9, 2018 EX-10.38

Forms of Performance-Based Restricted Stock Unit (RSU) Grant Notice and Agreement under 2010 Equity Incentive Plan with Revenue and Adjusted EBITDA Performance Metrics (for employees with a Change in Control Severance Agreement).

EX-10.38 4 qnst-ex1038332.htm EX-10.38 Exhibit 10.38 QuinStreet, Inc. Performance-Based Restricted Stock Unit (RSU) Grant Notice With A Change in Control Severance Agreement 2010 Equity Incentive Plan QuinStreet, Inc. (the “Company”), pursuant to its 2010 Equity Incentive Plan (the “Plan”), hereby grants to you as the Participant named below a Performance-Based Restricted Stock Unit Award with res

October 30, 2018 EX-99.1

QuinStreet Reports Strong First Quarter Fiscal 2019 Financial Results

EX-99.1 Exhibit 99.1 QuinStreet Reports Strong First Quarter Fiscal 2019 Financial Results • Reports revenue growth of 29% • Grows adjusted EBITDA 56% • Delivers over 20% growth in all reported client verticals • Builds net cash to $70.5 million • Raises full fiscal 2019 revenue growth outlook to 15-20% FOSTER CITY, CA – October 30, 2018 — QuinStreet, Inc. (Nasdaq: QNST), a leader in performance m

October 30, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Submission of Matters to a Vote of Security Holders

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 24, 2018 QUINSTREET, INC.

October 5, 2018 EX-2.1

Share Purchase Agreement between QuinStreet, Inc., AmOne Corp., and Rod Romero dated October 1, 2018.

EX-2.1 2 d367074dex21.htm EX-2.1 Exhibit 2.1 EXECUTION VERSION SHARE PURCHASE AGREEMENT by and among QUINSTREET, INC., AMONE CORP. and ROD ROMERO Dated as of October 1, 2018 TABLE OF CONTENTS 1. DEFINITIONS 2. BASIC TRANSACTION 11 2.1 Purchase and Sale of Shares 11 2.2 Closing Consideration 11 2.3 Installment Payments 11 2.4 Employee Installment Payments 11 2.5 Employee Closing Payments 12 2.6 Clo

October 5, 2018 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 1, 2018 QuinStreet, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34628 77-0512121 (State or other jurisdiction of incorporation) (Commission Fi

September 14, 2018 DEFA14A

QNST / QuinStreet, Inc. DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment no. ) Filed by the Registrant x Filed by a party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)

September 14, 2018 DEF 14A

QNST / QuinStreet, Inc. DEFINITIVE PROXY STATEMENT

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment no.  ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitt

September 12, 2018 S-8

September 12, 2018

FORM S-8 As filed with the Securities and Exchange Commission on September 12, 2018 Registration No.

September 12, 2018 10-K

QNST / QuinStreet, Inc. FORM 10-K (Annual Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended June 30, 2018 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-34628 QuinStreet, Inc. (Exact name of registrant as specified in its

September 12, 2018 EX-10.35

Amended Office Lease Metro Center, dated February 25, 2010 between the registrant and CA-Metro Center Limited Partnership

EXHIBIT 10.35 CONFORMED COPY TO REFLECT AMENDMENTS #1 THROUGH #5 OFFICE LEASE METRO CENTER METRO CENTER TOWER FOSTER CITY, CALIFORNIA Between HUDSON METRO CENTER, LLC, a Delaware limited partnership as Landlord, and QUINSTREET, INC., a Delaware corporation as Tenant OFFICE LEASE This Office Lease (this “Lease”), dated as of the date set forth in Section 1.1, is made by and between HUDSON METRO CEN

August 7, 2018 EX-99.1

QUINSTREET, INC. CONDENSED CONSOLIDATED BALANCE SHEETS (In thousands) June 30, 2018 June 30, 2017 Assets Current assets: Cash and cash equivalents $ 64,700 $ 49,571 Accounts receivable, net 68,492 44,059 Prepaid expenses and other assets 4,432 6,225

EX-99.1 2 d599786dex991.htm EX-99.1 Exhibit 99.1 QuinStreet Reports Strong Fourth Quarter and Record Fiscal Year 2018 Results — Reports revenue growth of 37% for fiscal Q4 and 35% for full-year fiscal 2018 — Delivers double-digit growth in all reported client verticals in Q4 — Achieves record annual revenue of $404.4 million in fiscal 2018 — Increases adjusted EBITDA 189% in fiscal 2018 — Builds n

August 7, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 7, 2018 QUINSTREET, INC.

May 24, 2018 EX-99.1

Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required on Schedule 13G need be filed with respect to ownership by each of the undersigned of sha

EX-99.1 2 a18-142591ex99d1.htm EX-99.1 EXHIBIT I Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required on Schedule 13G need be filed with respect to ownership by each of the undersigned of shares of Common Stock of QuinStreet, Inc. This Agreement may be executed in any number of counterparts,

May 24, 2018 SC 13G/A

QNST / QuinStreet, Inc. / Split Rock Partners LLC - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 8)* QuinStreet, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74874Q 10 0 (CUSIP Number) May 17, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule

May 10, 2018 10-Q

QNST / QuinStreet, Inc. QNST-Q2-20180331 (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2018 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exact

April 25, 2018 EX-99.1

QUINSTREET, INC. CONDENSED CONSOLIDATED BALANCE SHEETS (In thousands) March 31, June 30, 2018 2017 Assets Current assets: Cash and cash equivalents $ 47,089 $ 49,571 Accounts receivable, net 69,066 44,059 Prepaid expenses and other assets 7,074 6,225

Exhibit 99.1 Exhibit 99.1 QuinStreet Reports Record Results for Third Quarter Fiscal Year 2018 • Reports record revenue of $117.9 million • Grows revenue 49% year-over-year • Expands adjusted EBITDA margin to 10% • Increases adjusted EBITDA 116% year-over-year • Raises full fiscal 2018 revenue growth outlook to at least 30% FOSTER CITY, CA – April 25, 2018 — QuinStreet, Inc. (Nasdaq: QNST), a lead

April 25, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 25, 2018 QUINSTREET, INC.

April 11, 2018 EX-99.1

QuinStreet Announces Preliminary Third Quarter Fiscal 2018 Financial Results Responds To Recent Short Seller Report and Stock Activity

EX-99.1 Exhibit 99.1 QuinStreet Announces Preliminary Third Quarter Fiscal 2018 Financial Results Responds To Recent Short Seller Report and Stock Activity FOSTER CITY, Calif., April 11, 2018 – QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketing products and technologies, today announced preliminary financial results for the third quarter of fiscal 2018. For the third quarter of fis

April 11, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 11, 2018 QUINSTREET, INC.

February 13, 2018 SC 13G/A

QNST / QuinStreet, Inc. / Valenti Douglas - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 7)* QuinStreet, Inc. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2017 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate t

February 13, 2018 EX-99.1

Pursuant to Rule

EX-99.1 Exhibit 99.1 Pursuant to Rule 13d-1(k) (1) (iii) of Regulation 13D-G of the General Rules and Regulations of the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended, the undersigned agree that the statement to which this Exhibit is attached is filed on behalf of each of them in the capacities set forth herein below. Date: February 13, 2018 DOUGLAS J. VA

February 9, 2018 SC 13G/A

QNST / QuinStreet, Inc. / Private Capital Management, LLC - AMENDMENT NO. 3 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 3 )* Quinstreet, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2017 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to which this Sch

February 5, 2018 10-Q

QNST / QuinStreet, Inc. Q2'18 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2017 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exa

February 2, 2018 EX-99.I

Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required on Schedule 13G need be filed with respect to ownership by each of the undersigned of sha

EX-99.I 2 a18-51791ex99di.htm EX-99.I EXHIBIT I Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required on Schedule 13G need be filed with respect to ownership by each of the undersigned of shares of Common Stock of QuinStreet, Inc. This Agreement may be executed in any number of counterparts,

February 2, 2018 SC 13G/A

QNST / QuinStreet, Inc. / Split Rock Partners LLC - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 7)* QuinStreet, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74874Q 10 0 (CUSIP Number) January 18, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Sched

January 31, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 31, 2018 QUINSTREET, INC.

January 31, 2018 EX-99.1

QUINSTREET, INC. CONDENSED CONSOLIDATED BALANCE SHEETS (In thousands) December 31, June 30, 2017 2017 Assets Current assets: Cash and cash equivalents $ 42,406 $ 49,571 Accounts receivable, net 48,717 44,059 Prepaid expenses and other assets 6,798 6,

EX-99.1 2 d507084dex991.htm EX-99.1 Exhibit 99.1 QuinStreet Reports Second Quarter Fiscal Year 2018 Financial Results — Reports revenue growth of 33% year-over-year — Continues margin progress; delivers adjusted EBITDA of 8% — Raises full fiscal year 2018 revenue outlook to 20% growth FOSTER CITY, CA – January 31, 2018 — QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketing products a

November 7, 2017 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2017 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Ex

October 30, 2017 EX-99.1

QuinStreet Reports First Quarter Fiscal Year 2018 Financial Results

EX-99.1 2 d451392dex991.htm EX-99.1 Exhibit 99.1 QuinStreet Reports First Quarter Fiscal Year 2018 Financial Results FOSTER CITY, CA – October 30, 2017 — QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketing products and technologies, today announced financial results for the fiscal first quarter ended September 30, 2017. For the first quarter, the Company reported revenue of $87.4 mi

October 30, 2017 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Submission of Matters to a Vote of Security Holders

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 25, 2017 QUINSTREET, INC.

September 12, 2017 DEFA14A

QuinStreet DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment no. ) Filed by the Registrant x Filed by a party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)

September 12, 2017 DEF 14A

QuinStreet DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment no. ) Filed by the Registrant x Filed by a party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)

September 8, 2017 S-8

Power of Attorney (included in the signature pages hereof)

Form S-8 As filed with the Securities and Exchange Commission on September 8, 2017 Registration No.

September 8, 2017 EX-10.33

Forms of Restricted Stock Unit (RSU) Grant Notice and Agreement under 2010 Equity Incentive Plan (for employees with a Change in Control Severance Agreement).

EX-10.33 2 qnst-ex1033730.htm EX-10.33 EXHIBIT 10.33 QuinStreet, Inc. Restricted Stock Unit (RSU) Grant Notice With A Change in Control Severance Agreement 2010 Equity Incentive Plan QuinStreet, Inc. (the “Company”), pursuant to its 2010 Equity Incentive Plan (the “Plan”), hereby grants to you as the Participant named below a Restricted Stock Unit Award with respect to the number of shares of the

September 8, 2017 EX-10.34

Forms of Option Agreement and Option Grant Notice under 2010 Equity Incentive Plan (for employees with a Change in Control Severance Agreement).

EXHIBIT 10.34 QuinStreet, Inc. Stock Option Grant Notice With A Change in Control Severance Agreement 2010 Equity Incentive Plan QuinStreet, Inc. (the ?Company?), pursuant to its 2010 Equity Incentive Plan (the ?Plan?), hereby grants to Optionholder an option to purchase the number of shares of the Company?s Common Stock set forth below. This option is subject to all of the terms and conditions as

September 8, 2017 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended June 30, 2017 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-34628 QuinStreet, Inc. (Exact name of registrant as specified in its

August 8, 2017 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 8, 2017 QUINSTREET, INC.

August 8, 2017 EX-99.1

QuinStreet Reports Fourth Quarter Fiscal Year 2017 Financial Results Board of Directors Extends Stock Repurchase Program

EX-99.1 Exhibit 99.1 QuinStreet Reports Fourth Quarter Fiscal Year 2017 Financial Results Board of Directors Extends Stock Repurchase Program FOSTER CITY, CA ? August 8, 2017 ? QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketing products and technologies, today announced financial results for the fourth quarter ended June 30, 2017. For the fourth quarter, the Company reported total

May 10, 2017 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2017 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exact

May 9, 2017 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 9, 2017 QUINSTREET, INC.

May 9, 2017 EX-99.1

QuinStreet Reports Third Quarter Fiscal Year 2017 Financial Results

EX-99.1 2 d360362dex991.htm EX-99.1 Exhibit 99.1 QuinStreet Reports Third Quarter Fiscal Year 2017 Financial Results FOSTER CITY, CA – May 9, 2017 — QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketing products and technologies, today announced financial results for the third quarter ended March 31, 2017. For the third quarter, the Company reported total revenue of $79.2 million and

April 28, 2017 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 27, 2017 QUINSTREET, INC.

February 13, 2017 EX-99.1

Pursuant to Rule

EX-99.1 Exhibit 99.1 Pursuant to Rule 13d-1(k) (1) (iii) of Regulation 13D-G of the General Rules and Regulations of the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended, the undersigned agree that the statement to which this Exhibit is attached is filed on behalf of each of them in the capacities set forth herein below. Date: February 13, 2017 DOUGLAS J. VA

February 13, 2017 SC 13G/A

QNST / QuinStreet, Inc. / Valenti Douglas - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6)* QuinStreet, Inc. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2016 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate t

February 10, 2017 SC 13G/A

QuinStreet AMENDMENT NO. 2 (Passive Acquisition of More Than 5% of Shares)

c34150sc13ga1.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 2 )* Quinstreet, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2016 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant

February 9, 2017 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2016 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exa

February 8, 2017 EX-99.1

QuinStreet Reports Second Quarter Fiscal Year 2017 Financial Results

EX-99.1 Exhibit 99.1 QuinStreet Reports Second Quarter Fiscal Year 2017 Financial Results FOSTER CITY, CA ? February 8, 2017 ? QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketing products and technologies, today announced financial results for the second quarter ended December 31, 2016. For the second quarter, the Company reported total revenue of $65.6 million and GAAP net loss of

February 8, 2017 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 8, 2017 QUINSTREET, INC.

February 2, 2017 8-K

QuinStreet 8-K (Current Report/Significant Event)

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 1, 2017 QUINSTREET, INC.

January 27, 2017 SC 13G/A

QNST / QuinStreet, Inc. / Split Rock Partners LLC - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6)* QuinStreet, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74874Q 10 0 (CUSIP Number) December 31, 2016 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Sche

January 27, 2017 EX-99.1

Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required on Schedule 13G need be filed with respect to ownership by each of the undersigned of sha

EX-99.1 2 a17-33271ex99d1.htm EX-99.1 EXHIBIT I Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required on Schedule 13G need be filed with respect to ownership by each of the undersigned of shares of Common Stock of QuinStreet, Inc. This Agreement may be executed in any number of counterparts,

November 9, 2016 EX-99.1

QuinStreet Reports Q1 Financial Results and Corporate Restructuring Company Announces Stock Repurchase Program

EX-99.1 2 d285867dex991.htm EX-99.1 Exhibit 99.1 QuinStreet Reports Q1 Financial Results and Corporate Restructuring Company Announces Stock Repurchase Program FOSTER CITY, CA – November 9, 2016 — QuinStreet, Inc. (Nasdaq: QNST), the leader in performance marketing products and technologies, today announced financial results for the first quarter ended September 30, 2016. The Company also announce

November 9, 2016 8-K

QuinStreet 8-K (Current Report/Significant Event)

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 9, 2016 QUINSTREET, INC.

November 9, 2016 EX-10.1

Form of Change in Control Severance Agreement.

EXHIBIT 10.1 CHANGE IN CONTROL SEVERANCE AGREEMENT This CHANGE IN CONTROL AGREEMENT (this ?Agreement?) is made by and between QuinStreet, Inc., a Delaware corporation (the ?Company?), and (the ?Executive?) and is dated as of the date signed by the Executive (the ?Effective Date?). WHEREAS, the Company considers it essential to the best interests of its stockholders to foster the continuous employm

November 9, 2016 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2016 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Ex

October 31, 2016 8-K

QuinStreet FORM 8-K (Current Report/Significant Event)

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 28, 2016 QUINSTREET, INC.

September 12, 2016 DEFA14A

QuinStreet DEFINITIVE ADDITIONAL MATERIALS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defin

September 12, 2016 DEF 14A

QuinStreet DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment no. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) x Defin

August 19, 2016 S-8

August 19, 2016

Form S-8 As filed with the Securities and Exchange Commission on August 19, 2016 Registration No.

August 19, 2016 S-8

August 19, 2016

Form S-8 As filed with the Securities and Exchange Commission on August 19, 2016 Registration No.

August 19, 2016 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended June 30, 2016 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-34628 QuinStreet, Inc. (Exact name of registrant as specified in its

August 19, 2016 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended June 30, 2016 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-34628 QuinStreet, Inc. (Exact name of registrant as specified in its

August 9, 2016 8-K

QuinStreet FORM 8-K (Current Report/Significant Event)

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 9, 2016 QUINSTREET, INC.

August 9, 2016 EX-99.1

QuinStreet Reports Financial Results for Fourth Quarter and Fiscal Year 2016

EX-99.1 2 d208244dex991.htm EX-99.1 Exhibit 99.1 QuinStreet Reports Financial Results for Fourth Quarter and Fiscal Year 2016 FOSTER CITY, CA – August 9, 2016 — QuinStreet, Inc. (Nasdaq: QNST), the leader in performance marketing products and technologies, today announced financial results for the fourth quarter and fiscal year ended June 30, 2016. For the fourth quarter, the Company reported tota

August 9, 2016 8-K

QuinStreet FORM 8-K (Current Report/Significant Event)

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 9, 2016 QUINSTREET, INC.

August 9, 2016 EX-99.1

QuinStreet Reports Financial Results for Fourth Quarter and Fiscal Year 2016

EX-99.1 2 d208244dex991.htm EX-99.1 Exhibit 99.1 QuinStreet Reports Financial Results for Fourth Quarter and Fiscal Year 2016 FOSTER CITY, CA – August 9, 2016 — QuinStreet, Inc. (Nasdaq: QNST), the leader in performance marketing products and technologies, today announced financial results for the fourth quarter and fiscal year ended June 30, 2016. For the fourth quarter, the Company reported tota

May 10, 2016 EX-99.1

QuinStreet Reports Financial Results for Third Quarter Fiscal Year 2016

EX-99.1 2 d148278dex991.htm EX-99.1 Exhibit 99.1 QuinStreet Reports Financial Results for Third Quarter Fiscal Year 2016 FOSTER CITY, CA – May 10, 2016 — QuinStreet, Inc. (Nasdaq: QNST), the leader in performance marketing products and technologies, today announced financial results for the third quarter ended March 31, 2016. For the third quarter, the Company reported total revenue of $81.2 milli

May 10, 2016 8-K

QuinStreet 8-K (Current Report/Significant Event)

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 10, 2016 QUINSTREET, INC.

May 10, 2016 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q R QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2016 or £ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exact

March 22, 2016 CORRESP

QuinStreet ESP

CORRESP United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

March 4, 2016 CORRESP

QuinStreet ESP

CORRESP VIA EDGAR March 4, 2016 United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

February 11, 2016 SC 13G/A

QNST / QuinStreet, Inc. / Private Capital Management, LLC - AMENDMENT NO. 2 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 2 )* Quinstreet, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2015 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to which this Sch

February 9, 2016 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q R QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2015 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinStreet, Inc. (Exa

February 9, 2016 EX-99.1

QuinStreet Reports Financial Results for Second Quarter Fiscal Year 2016

EX-99.1 2 d132120dex991.htm EX-99.1 Exhibit 99.1 QuinStreet Reports Financial Results for Second Quarter Fiscal Year 2016 FOSTER CITY, CA – February 9, 2016 — QuinStreet, Inc. (Nasdaq: QNST), a leader in online performance marketing services and technologies, today announced financial results for the second quarter ended December 31, 2015. For the second quarter, the Company reported total revenue

February 9, 2016 8-K

QuinStreet 8-K (Current Report/Significant Event)

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 9, 2016 QUINSTREET, INC.

February 9, 2016 EX-10.1

Counselor Agreement dated December 31, 2015 between the Company and William Bradley.

EXHIBIT 10.1 COUNSELOR AGREEMENT This Counselor Agreement (?Agreement?) between QuinStreet, Inc., a Delaware corporation (the ?Company?) and William Bradley, an individual (?Counselor?), is effective as of December 31, 2015 (the ?Effective Date?). 1. Purpose of Engagement. Counselor is experienced with the Company?s business, operations and objectives as a result of Counselor?s service on the Comp

January 28, 2016 SC 13G/A

QNST / QuinStreet, Inc. / Valenti Douglas - SCHEDULE 13G AMENDMENT NO. 5 Passive Investment

Schedule 13G Amendment No. 5 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5)* QuinStreet, Inc. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securities) 74874Q100 (CUSIP Number) December 31, 2015 (Date of Event Which Requires Filing of this Statement) Check the appropriat

January 28, 2016 EX-99.1

Date: January 28, 2016

EX-99.1 CUSIP No. 74874Q100 SCHEDULE 13G Page 1 of 1 Exhibit 99.1 Pursuant to Rule 13d-1(k) (1) (iii) of Regulation 13D-G of the General Rules and Regulations of the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended, the undersigned agree that the statement to which this Exhibit is attached is filed on behalf of each of them in the capacities set forth herein

January 15, 2016 SC 13G/A

QuinStreet SC 13G/A (Passive Acquisition of More Than 5% of Shares)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5)* QuinStreet, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74874Q 10 0 (CUSIP Number) December 31, 2015 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Sche

January 15, 2016 EX-99.1

Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required on Schedule 13G need be filed with respect to ownership by each of the undersigned of sha

EXHIBIT I Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required on Schedule 13G need be filed with respect to ownership by each of the undersigned of shares of Common Stock of QuinStreet, Inc.

December 18, 2015 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 14, 2015 QUINSTREET, INC.

November 9, 2015 EX-99.1

QuinStreet Reports Financial Results for First Quarter Fiscal Year 2016

EX-99.1 Exhibit 99.1 QuinStreet Reports Financial Results for First Quarter Fiscal Year 2016 FOSTER CITY, CA ? November 9, 2015 ? QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketing online, today announced financial results for the first quarter ended September 30, 2015. For the first quarter, the Company reported total revenue of $72.4 million, an increase of 5% compared to the sam

November 9, 2015 8-K

QuinStreet 8-K (Current Report/Significant Event)

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 9, 2015 QUINSTREET, INC.

November 9, 2015 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2015 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 Qu

October 28, 2015 8-K

QuinStreet FORM 8-K (Current Report/Significant Event)

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 26, 2015 QUINSTREET, INC.

September 10, 2015 DEFA14A

QuinStreet DEFINITIVE ADDITIONAL MATERIALS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of

September 10, 2015 DEF 14A

QuinStreet DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)

August 19, 2015 EX-10.30

Forms of Performance-Based Restricted Stock Unit (RSU) Grant Notice and Agreement under 2010 Equity Incentive Plan (for non-executive officer employees).

Exhibit 10.30 QUINSTREET, INC. PERFORMANCE-BASED RESTRICTED STOCK UNIT (RSU) GRANT NOTICE 2010 EQUITY INCENTIVE PLAN QuinStreet, Inc. (the ?Company?), pursuant to its 2010 Equity Incentive Plan (the ?Plan?), hereby grants to you as the Participant named below a Performance-Based Restricted Stock Unit Award with respect to the number of shares of the Company?s Common Stock set forth below. This Per

August 19, 2015 S-8

August 19, 2015

Form S-8 As filed with the Securities and Exchange Commission on August 19, 2015 Registration No.

August 19, 2015 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended June 30, 2015 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-34628 QuinStreet, Inc. (Exact name of registrant as

August 3, 2015 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 3, 2015 QUINSTREET, INC.

August 3, 2015 EX-99.1

QuinStreet Reports Financial Results for Fourth Quarter and Fiscal Year 2015

EX-99.1 Exhibit 99.1 QuinStreet Reports Financial Results for Fourth Quarter and Fiscal Year 2015 FOSTER CITY, CA ? August 3, 2015 ? QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketing online, today announced financial results for the fourth quarter and fiscal year ended June 30, 2015. For the fourth quarter, the Company reported total revenue of $70.9 million, an increase of 5% com

June 12, 2015 8-K

QuinStreet FORM 8-K (Current Report/Significant Event)

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 11, 2015 QUINSTREET, INC.

June 12, 2015 EX-10.1

Third Amendment, to the Second Amended and Restated Revolving Credit and Term Loan Agreement, as amended from time to time, dated as of June 11, 2015, by and among QuinStreet, Inc., Comerica Bank, as administrative agent, and certain lenders party thereto.

EX-10.1 Exhibit 10.1 THIRD AMENDMENT TO CREDIT AGREEMENT This Third Amendment to Credit Agreement (?Third Amendment?) is made as of June 11, 2015, by and among QuinStreet, Inc. (?Borrower?), the financial institutions from time to time signatories thereto (collectively, the ?Lenders?), and Comerica Bank, as administrative agent for the Lenders (in such capacity, the ?Agent?). RECITALS A. Borrower

May 7, 2015 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2015 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34628 QuinSt

May 5, 2015 8-K

QuinStreet FORM 8-K (Current Report/Significant Event)

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2015 QUINSTREET, INC.

May 5, 2015 EX-99.1

QuinStreet Reports Financial Results for Third Quarter Fiscal Year 2015

EX-99.1 2 d918453dex991.htm EX-99.1 Exhibit 99.1 QuinStreet Reports Financial Results for Third Quarter Fiscal Year 2015 FOSTER CITY, CA – MAY 5, 2015 — QuinStreet, Inc. (Nasdaq: QNST), a leader in performance marketing online, today announced financial results for the third quarter ended March 31, 2015. For the third quarter, the Company reported total revenue of $75.3 million, an increase of 5%

April 24, 2015 8-K

QuinStreet FORM 8-K (Current Report/Significant Event)

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 23, 2015 QUINSTREET, INC.

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