Edgar Filing: Blackstone Group L.P.

Ownership Submission

FORM 4

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:

3235-0287

Expires:

January 31, 2005

Estimated average burden hours per response...

0.5

(Print or Type Responses)

1. Name and Address of Reporting Person ^*

Tosi Laurence A

2. Issuer Name and Ticker or Trading Symbol
Blackstone Group L.P. [BX]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

_____ Director	_____ 10% Owner
__X__ Officer (give title below)	_____ Other (specify below)
Chief Financial Officer

(Last)

(First)

(Middle)

C/O THE BLACKSTONE GROUP L.P., 345 PARK AVENUE

3. Date of Earliest Transaction (Month/Day/Year)
09/02/2008

(Street)

NEW YORK, NY 10154

4. If Amendment, Date Original Filed(Month/Day/Year)

6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

(City)

(State)

(Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.		SEC 1474 (9-02)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security
(Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code
(Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date
(Month/Day/Year)

7. Title and Amount of Underlying Securities
(Instr. 3 and 4)

8. Price of Derivative Security
(Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)

11. Nature of Indirect Beneficial Ownership
(Instr. 4)

Code

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Blackstone Holdings partnership units ⁽¹⁾ ⁽²⁾

⁽³⁾

09/02/2008

494,145

⁽³⁾

Common Units representing limited partner interests

494,145

$ 0

494,145

Reporting Owners

Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Tosi Laurence A C/O THE BLACKSTONE GROUP L.P. 345 PARK AVENUE NEW YORK, NY 10154			Chief Financial Officer

Signatures

/s/ Robert L. Friedman, as Attorney-in-Fact		09/03/2008
^**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Granted under the 2007 Equity Incentive Plan. 155,764 of these deferred restricted Blackstone Holdings partnership units (which term refers collectively to a partnership unit in each of Blackstone Holdings I L.P., Blackstone Holdings II L.P., Blackstone Holdings III L.P., Blackstone Holdings IV L.P. and Blackstone Holdings V L.P.) will vest on September 2, 2013 subject to Mr. Tosi's continued employment with Blackstone. The other 338,381 of these deferred restricted Blackstone Holdings partnership units will vest in accordance with the following schedule: 16.46% on September 2, 2009, 47.52% on September 2, 2010, 22.28% on September 2, 2011 and 13.74% on September 2, 2012, subject to Mr. Tosi's continued employment with Blackstone. (Continued to footnote 2.)
(2)	As these deferred restricted Blackstone Holdings partnership units vest, the underlying Blackstone Holdings units will be delivered to the reporting person except that no more than 1/3 of the vested deferred units will be delivered between the first and second anniversaries of the grant date, no more than 2/3 of the vested units will be delivered between the second and third anniversaries of the grant date, and no more than 3/4 of the vested units will be delivered during his service with Blackstone (with the remaining units to be delivered after the completion of his restrictive covenant period). Not withstanding the foregoing, the units may be delivered earlier upon a change in control of Blackstone.
(3)	Pursuant to an exchange agreement, holders of Blackstone Holdings partnership units, subject to the vesting and minimum retained ownership requirements and transfer restrictions set forth in the partnership agreements of the Blackstone Holdings partnerships, may up to four times each year (subject to the terms of the exchange agreement) exchange their Blackstone Holdings partnership units for The Blackstone Group L.P. common units on a one-for-one basis, subject to customary conversion rate adjustments for splits, unit distributions and reclassifications. A Blackstone Holdings limited partner must exchange one partnership unit in each of the five Blackstone Holdings partnerships to effect an exchange for a common unit. Notwithstanding the foregoing, the reported Blackstone Holdings partnership units may not be exchanged at any time prior to December 31, 2009 other than pursuant to transactions or programs approved by Blackstone.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.