OMB APPROVAL ------------------------------- OMB Number: 3235-0006 Expires: December 31, 2009 Estimated average burden hours per response:...............22.6 ------------------------------- 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, 2007 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: The Blackstone Group L.P. Address: 345 Park Avenue New York, NY 10154 Form 13F File Number: 28- 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: Robert L. Friedman Title: Authorized Person Phone: (212) 583-5000 Signature, Place, and Date of Signing: /s/ Robert L. Friedman New York, NY May 15, 2008 ---------------------- ------------- ------------ [Signature] [City, State] [Date] Report Type (Check only one): [ ] 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).) [X] 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: Form 13F File Number Name -------------------- ---- 28-12319 Blackstone Kailix Advisors LLC Form 13F Summary Page Report Summary: Number of Other Included Managers: 1 Form 13F Information Table Entry Total: 20 Form 13F Information Table Value Total: $2,841,185 (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. Number Form 13F File Number Name ------ -------------------- ---- 1 28- Blackstone Capital Partners V L.P. Explanatory Note: The Blackstone Group L.P. is managed and operated by its general partner, Blackstone Group Management L.L.C., which is in turn wholly-owned by Blackstone's senior managing directors and controlled by its two founders, Mr. Stephen A. Schwarzman and Mr. Peter G. Peterson. FORM 13F INFORMATION TABLE THE BLACKSTONE GROUP L.P. FOR QUARTER ENDED DECEMBER 31, 2007 ----------------------------------------------------------------------------------------------------------------------------------- Name of Issuer Title of CUSIP Value (x Shrs or prn SH/ Put/Call Investment Other Voting Authority Class $1000) amt PRN Discretion Managers Sole Shared None ----------------------------------------------------------------------------------------------------------------------------------- AbitibiBowater Inc. COM 003687100 $2,366 114,822 SH SOLE X ----------------------------------------------------------------------------------------------------------------------------------- Airmedia Group Inc. SPONSORED ADR 009411109 $1,101 49,200 SH SOLE X ----------------------------------------------------------------------------------------------------------------------------------- Alliance Data Systems Corporation COM 018581108 $215,056 2,867,800 SH SOLE 1 X ----------------------------------------------------------------------------------------------------------------------------------- Allied Waste Industries, Inc. COM 019589308 $527,934 47,906,868 SH SOLE X ----------------------------------------------------------------------------------------------------------------------------------- Ford Motor Company (a) COM PAR $.01 345370860 $217,265 32,283,000 SH CALL SOLE X ----------------------------------------------------------------------------------------------------------------------------------- General Motors Corporation COM 370442105 $16,646 675,000 SH CALL SOLE X ----------------------------------------------------------------------------------------------------------------------------------- Harrah's Entertainment, Inc. COM 413619107 $78,100 880,000 SH CALL SOLE X ----------------------------------------------------------------------------------------------------------------------------------- Harrah's Entertainment, Inc. COM 413619107 $11,094 125,000 SH SOLE X ----------------------------------------------------------------------------------------------------------------------------------- iShares Trust MSCI EMERG MKT 464287234 $210,420 1,400,000 SH PUT SOLE X ----------------------------------------------------------------------------------------------------------------------------------- Lear Corporation COM 521865105 $277 10,000 SH CALL SOLE X ----------------------------------------------------------------------------------------------------------------------------------- Lodigan, Inc. COM PAR $.01 54021P403 $14,941 1,326,909 SH SOLE X ----------------------------------------------------------------------------------------------------------------------------------- MBIA Inc. COM 55262C100 $7,452 400,000 SH CALL SOLE X ----------------------------------------------------------------------------------------------------------------------------------- New Oriental Education and Technology Group Inc. SPONSORED ADR 647581107 $1,007 12,600 SH SOLE X ----------------------------------------------------------------------------------------------------------------------------------- Orbitz Worldwide, Inc. COM 68557K109 $415,756 48,912,526 SH SOLE 1 X ----------------------------------------------------------------------------------------------------------------------------------- Transmeridian Exploration Incorporated COM 89376N108 $2,725 1,383,400 SH SOLE X ----------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------- Name of Issuer Title of CUSIP Value (x Shrs or prn SH/ Put/Call Investment Other Voting Authority Class $1000) amt PRN Discretion Managers Sole Shared None ----------------------------------------------------------------------------------------------------------------------------------- Tribune Company COM 896047107 $138,861 2,902,000 SH CALL SOLE X ----------------------------------------------------------------------------------------------------------------------------------- Trico Marine Services, Inc. NOTE 3.000% 1/1 896106AQ4 $5,419 5,000,000 PRN SOLE X ----------------------------------------------------------------------------------------------------------------------------------- TRW Automotive Holdings Corp. COM 87264S106 $962,660 46,060,285 SH SOLE X ----------------------------------------------------------------------------------------------------------------------------------- United Rentals, Inc. COM 911363109 $3,874 211,000 SH SOLE X ----------------------------------------------------------------------------------------------------------------------------------- Visteon Corporation COM 92839U107 $8,231 1,875,000 SH CALL SOLE X ----------------------------------------------------------------------------------------------------------------------------------- (a) Includes two series of Ford Motor Company call options.