13F-HR 1 d13fhr.txt FORM 13F UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: 06/30/11 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: SC X Management, LLC Address: 3000 Sand Hill Road Bldg 4, Suite 250 Menlo Park, CA 94025 Form 13F File Number: 28-12108 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: Douglas Leone Title: Managing Member Phone: (650) 854-3927 Signature, Place, and Date of Signing: Douglas Leone Menlo Park, California 08/11/11 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).) FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 0 Form 13F Information Table Entry Total: 2 Form 13F Information Table Value Total: $ 5,908 (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 SC X MANAGEMENT, LLC FORM 13F INFORMATION TABLE 6/30/2011

COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 ~~--------~~VOTING ~~--------------~~AUTHORITY ~~---------~~VALUE ~~--------~~SHRS ~~----------------~~OR ~~----------~~SH/ ~~--------~~PUT/ INVESTMENT OTHER ------------------- ~~VOTING AUTHORITY~~ ------~~-------------~~ ~~VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER~~ NAME OF ISSUER TITLE OF CLASS CUSIP (X $1000) PRN AMT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE ----------------------------- -------------- ----------- ---------- --------- --- ---- ---------- -------- --------- ------ -------- ALCATEL ADR 013904305 ~~860~~854 148,083 SH SOLE 148,083 AMAZON.COM INC COMMON 023135106 45,~~452~~054 24,714 SH SOLE 24,714 ~~CISCO SYSTEMS INC. COMMON 17275R102 12,279 715,981 SH SOLE 715,981 OPNEXT COMMON 68375V105 15 6,362 SH SOLE 6,362~~

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