13F-HR 1 y14658e13fvhr.txt CHIEFTAIN CAPITAL MANAGEMENT, INC. UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 FORM 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: September 30, 2005 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: Chieftain Capital Management, Inc. Address: 12 East 49th Street, New York, New York 10017 Form 13F File Number: 28-1658 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: Thomas D. Stern Title: Managing Director Phone: (212) 421-9760 Signature, Place, and Date of Signing: /s/ Thomas D. Stern New York, New York November 14, 2005 ----------------------- 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: 6 Form 13F Information Table Value Total: $ 2,787,277 (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 FORM 13F INFORMATION TABLE

COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 -------- -------- -------- -------- ------- -------- -------- -------- NAME OF ISSUER TITLE OF VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY CLASS CUSIP (x $1000) PRN AMT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE ------ ----- ----- --------- ------- --- ---- ---------- -------- ---- ------ ---- COMCAST CORP NEW CL A SPL 20030N 20 0 815,368 28,331,061 SH SOLE 28,331,061 CAREMARK RX INC COM 141705 10 3 586,741 11,751,275 SH SOLE 11,751,275 LABORATORY CORP AMER HOLDINGS COM NEW 50540R 40 9 442,915 9,092,896 SH SOLE 9,092,896 AMERICAN TOWER CORP CL A 029912 20 1 418,545 16,775,350 SH SOLE 16,775,350 FEDERAL HOME LN MTG CORP COM 313400 30 1 308,319 5,460,835 SH SOLE 5,460,835 UNITEDHEALTH GROUP INC COM 91324P 10 2 215,389 3,832,542 SH SOLE 3,832,542