144 0001563458 XXXXXXXX LIVE 0001117297 QUINSTREET, INC 001-34628 950 TOWER LANE, 12TH FLOOR FOSTER CITY CA 94404 (650) 578-7632 Wong Gregory Officer Common Stock Fidelity Brokerage Services LLC

245 Summer Street Boston MA 02110

22057 268874.83 57445370 06/15/2026 NASDAQ Common Stock 02/10/2025 RSU Release QuinStreet, Inc. N 2006 02/10/2025 N/A Common Stock 05/10/2025 RSU Release QuinStreet, Inc. N 10833 05/10/2025 N/A Common Stock 08/10/2025 RSU Release QuinStreet, Inc. N 9218 08/10/2025 N/A Y 06/15/2026 03/06/2026 /s/ Audrey Skillern, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Gregory Wong