UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Form 13F COVER PAGE Report for the Calendar Year or Quarter Ended: March 31, 2013 Check here if Amendment [_]; Amendment Number: _______ This Amendment (Check only one.): [_] is a restatement. [_] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: StepStone Group LP Address: 4350 La Jolla Village Drive, Suite 800 San Diego, California 92122 13F File Number: 028-15126 The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Name: Jason Ment Title: General Counsel and Chief Compliance Officer of StepStone Group Holdings LLC, general partner of StepStone Group LP Phone: (212) 351-6121 Signature, Place, and Date of Signing: /s/ Jason Ment New York, NY May 15, 2013 ---------------------------- ---------------------------- -------------- [Signature] [City, State] [Date] Report Type (Check only one): [X] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.) [_] 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).) [_] 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).) List of Other Managers Reporting for this Manager: None. FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 0 Form13F Information Table Entry Total: 11 Form13F Information Table Value Total: $ 149,504 ------------ (thousands) List of Other Included Managers: Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report. None. 2 FORM 13F INFORMATION TABLE VOTING AUTHORITY VALUE SHARES / SH / PUT / INVESTMENT OTHER --------------------- NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE -------------- -------------- --------- -------- --------- ---- ----- ---------- -------- --------- ------ ---- QUINSTREET INC COM 74874Q100 1,612 270,114 SH SOLE N/A 270,114 0 0 ZYNGA INC CL A 98986T108 6,593 1,962,360 SH SOLE N/A 1,962,360 0 0 FIDUS INVT CORP COM 316500107 4,981 260,105 SH SOLE N/A 260,105 0 0 C&J ENERGY SVCS INC COM 12467B304 59,158 2,583,345 SH SOLE N/A 2,583,345 0 0 APACHE CORP COM 37411105 45,640 593,193 SH SOLE N/A 593,193 0 0 EDUCATION MGMT CORP NEW COM 28140M103 4,372 1,191,519 SH SOLE N/A 1,191,519 0 0 CAESARS ENTMT CORP COM 127686103 26,407 1,665,032 SH SOLE N/A 1,665,032 0 0 REACHLOCAL INC COM 75525F104 480 32,081 SH SOLE N/A 32,081 0 0 MILLENNIAL MEDIA INC COM 60040N105 111 17,542 SH SOLE N/A 17,542 0 0 RPX CORP COM 74972G103 62 4,396 SH SOLE N/A 4,396 0 0 HALLADOR ENERGY COMPANY COM 40609P105 85 12,324 SH SOLE N/A 12,324 0 0