13F-HR 1 form13fhr.txt JANA PARTNERS LLC UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Form 13F COVER PAGE Report for the Calendar Year or Quarter Ended: December 31, 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: JANA PARTNERS LLC -------------------------------------------------- Address: 200 Park Avenue, Suite 3300 -------------------------------------------------- New York, New York 10166 -------------------------------------------------- -------------------------------------------------- Form 13F File Number: 028-10328 ------------------ 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: Charles Penner -------------------------------------------------- Title: General Counsel -------------------------------------------------- Phone: 212 692-7696 -------------------------------------------------- Signature, Place, and Date of Signing: /s/ Charles Penner New York, New York February 10, 2006 ------------------------ ------------------------------ ----------------- 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).) Report Summary: Number of Other Included Managers: 0 ------------- Form 13F Information Table Entry Total: 103 ------------- Form 13F Information Table Value Total: $3,369,676 ------------- (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

------------------------------------------------------------------------------------------------------------------------------------ NAME OF TITLE VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY ISSUER OF CLASS CUSIP (X $1000) PRN AMT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 3COM CORP COM 885535104 36000 10000000 SH SOLE 10000000 AGERE SYS INC COM 00845V308 63322 4908700 SH SOLE 4908700 ALTRIA GROUP INC COM 02209S103 130805 1750600 SH SOLE 1750600 AMERICAN EAGLE OUTFITTERS NE COM 02553E106 20682 900000 SH SOLE 900000 AMERICAN EXPRESS CO COM 025816109 154380 3000000 SH SOLE 3000000 AMERICAN ORIENTIAL BIOENGR IN COM 028731107 2622 594600 SH SOLE 594600 AQUILA INC COM 03840P102 2775 770700 SH SOLE 770700 ARENA 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CAREER COLLEGES INC COM NEW 20651H201 1991 134500 SH SOLE 134500 CONSECO INC COM NEW 208464883 46273 1997100 SH SOLE 1997100 COPART INC COM 217204106 54650 2369901 SH SOLE 2369901 DADE BEHRING HLDGS INC COM 23342J206 85871 2100044 SH SOLE 2100044 DAVITA INC COM 23918K108 73767 1456700 SH SOLE 1456700 DENDRITE INTL INC COM 248239105 8659 600900 SH SOLE 600900 EXPONENT INC COM 30214U102 2782 98040 SH SOLE 98040 FIRST CONSULTING GROUP INC COM 31986R103 4939 841418 SH SOLE 841418 FOREST OIL CORP COM PAR $0.01 346091705 1960 43000 SH SOLE 43000 FOUNDATION COAL HLDGS INC COM 35039W100 1140 30000 SH SOLE 30000 FREESCALE SEMICONDUCTOR CL B CL B 35687M206 1107 44000 SH SOLE 44000 GERBER SCIENTIFIC INC COM 373730100 2112 220700 SH SOLE 220700 GIANT INDS, INC COM 374508109 5212 100300 SH SOLE 100300 GLOBAL INDUSTRIES LTD COM 379336100 1283 113000 SH SOLE 113000 GMX RES INC COM 38011M108 7333 203700 SH SOLE 203700 GOTTSCHALKS INC COM 383485109 2093 248300 SH SOLE 248300 GULFMARK OFFSHORE INC COM 402629109 1754 59200 SH SOLE 59200 HALLIBURTON CO COM 406216101 1035 16700 SH SOLE 16700 HOLLINGER INTL INC COM 435569108 4117 459500 SH SOLE 459500 HOLLY CORP COM PAR $0.01 435758305 22736 386200 SH SOLE 386200 HOME DEPOT INC COM 437076102 1923 47500 SH SOLE 47500 HYPERCOM CORP COM 44913M105 3864 604700 SH SOLE 604700 INTERNATIONAL COAL GRP INC COM 45928H106 2489 261972 SH SOLE 261972 KERR MCGEE CORP COM 492386107 184997 2036068 SH SOLE 2036068 KERR MCGEE CORP CALL 492386907 15446 170000 CALL SOLE 170000 KINDRED HEALTHCARE INC COM 494580103 20168 782900 SH SOLE 782900 KITTY HAWK INC COM NEW 498326206 668 629900 SH SOLE 629900 LEAP WIRELESS INTL INC COM NEW 521863308 1705 45000 SH SOLE 45000 LIPMAN ELECTRONIC ENGINEERIN ORD M6772H101 42242 1816846 SH SOLE 1816846 LOUISIANA PAC CORP COM 546347105 15166 552100 SH SOLE 552100 LUCENT TECHNOLOGIES INC COM 549463107 15492 5824124 SH SOLE 5824124 MARATHON OIL CORP COM 565849106 26479 434300 SH SOLE 434300 MASSEY ENERGY CORP COM 576206106 64065 1691700 SH SOLE 1691700 MASSEY ENERGY CORP CALL 576206906 14879 392900 CALL SOLE 392900 MCDERMOTT INTL INC COM 580037109 11152 250000 SH SOLE 250000 MCDONALDS CORP COM 580135101 33481 992900 SH SOLE 992900 M D C HLDGS INC COM 552676108 92970 1500000 SH SOLE 1500000 MGIC INVT CORP WIS COM 552848103 71968 1093400 SH SOLE 1093400 MICROSOFT CORP COM 594918104 79778 3050800 SH SOLE 3050800 NMS COMMINICATION CORP COM 629248105 1396 400000 SH SOLE 400000 NOBLE ENERGY INC COM 655044105 4864 120700 SH SOLE 120700 NOVOSTE CORP COM 67010C209 737 331924 SH SOLE 331924 ORACLE CORP COM 68389X105 12210 1000000 SH SOLE 1000000 OWENS ILL INC COM NEW 690768403 2104 100000 SH SOLE 100000 PETROHAWK ENERGY CORP COM 716495106 6098 461300 SH SOLE 461300 PFIZER INC CALL 717081903 81655 3501500 CALL SOLE 3501500 PHELPS DODGE CORP COM 717265102 28774 200000 SH SOLE 200000 POTLATCH CORP COM 737628107 54406 1067200 SH SOLE 1067200 QLT INC COM 746927102 17962 2824270 SH SOLE 2824270 RCN CORP COM NEW 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TODCO CL A 88889T107 1435 37700 SH SOLE 37700 TRONOX INC CL A 897051108 9733 744700 SH SOLE 744700 TRUMP ENTMT RESORTS INC COM 89816T103 36293 1802927 SH SOLE 1802927 TXU CORP COM 873168108 23097 460200 SH SOLE 460200 UNISYS CORP COM 909214108 4839 830000 SH SOLE 830000 USA MOBILITY INC COM 90341G103 28198 1017259 SH SOLE 1017259 VALERO ENERGY CORP NEW COM 91913Y100 92839 1799200 SH SOLE 1799200 VALERO ENERGY CORP NEW CALL 91913Y900 7255 140600 CALL SOLE 140600 VESTA INS GROUP INC COM 925391104 3584 3583588 SH SOLE 3583588 VISTEON CORP COM 92839U107 4069 650000 SH SOLE 650000 WAL MART STORES INC COM 931142103 2363 50500 SH SOLE 50500 WEBZEN INC SPONSORED ADR 94846M102 1662 200000 SH SOLE 200000 WHIRLPOOL CORP COM 963320106 29819 356000 SH SOLE 356000 WILLIAMS COS INC DEL COM 969457100 103493 4466700 SH SOLE 4466700