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FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
WARBURG PINCUS PRIVATE EQUITY VIII L P

(Last)(First)(Middle)
C/O WARBURG PINCUS & CO., 466 LEXINGTON AVENUE

(Street)
NEW YORKNY10017

(City)(State)(Zip)
2. Issuer Name and Ticker or Trading Symbol
Targa Resources Partners LP [NGLS]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
DirectorX10% Owner
Officer (give title below)Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
05/28/2009
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
XForm filed by More than One Reporting Person

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)
CodeVAmount(A) or (D)Price
Common Units representing limited partner interests 05/28/2009(3) C  9,079,635 (1) A$ 0 (3) 9,079,635 (1) I See Footnotes (1) (2)

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 Security3. 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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Subordinated Units representing limited partner interests (3) 05/28/2009(3) C   9,079,635 (1)  (3) (3) Common Units 9,079,635 (1) (3) 0 I See Footnotes (1) (2)
1. Name and Address of Reporting Person*
WARBURG PINCUS PRIVATE EQUITY VIII L P

(Last)(First)(Middle)
C/O WARBURG PINCUS & CO., 466 LEXINGTON AVENUE

(Street)
NEW YORKNY10017

(City)(State)(Zip)
1. Name and Address of Reporting Person*
Warburg Pincus Private Equity IX, L.P.

(Last)(First)(Middle)
C/O WARBURG PINCUS & CO., 466 LEXINGTON AVENUE

(Street)
NEW YORKNY10017

(City)(State)(Zip)
1. Name and Address of Reporting Person*
Warburg Pincus Partners LLC

(Last)(First)(Middle)
C/O WARBURG PINCUS & CO., 466 LEXINGTON AVENUE

(Street)
NEW YORKNY10017

(City)(State)(Zip)
1. Name and Address of Reporting Person*
Warburg Pincus IX LLC

(Last)(First)(Middle)
C/O WARBURG PINCUS & CO., 466 LEXINGTON AVENUE

(Street)
NEW YORKNY10017

(City)(State)(Zip)
1. Name and Address of Reporting Person*
WARBURG PINCUS & CO

(Last)(First)(Middle)
466 LEXINGTON AVENUE

(Street)
NEW YORKNY10017

(City)(State)(Zip)
1. Name and Address of Reporting Person*
WARBURG PINCUS LLC

(Last)(First)(Middle)
C/O WARBURG PINCUS & CO., 466 LEXINGTON AVENUE

(Street)
NEW YORKNY10017

(City)(State)(Zip)
1. Name and Address of Reporting Person*
KAYE CHARLES R

(Last)(First)(Middle)
C/O WARBURG PINCUS & CO., 466 LEXINGTON AVENUE

(Street)
NEW YORKNY10017

(City)(State)(Zip)
1. Name and Address of Reporting Person*
LANDY JOSEPH

(Last)(First)(Middle)
C/O WARBURG PINCUS & CO., 466 LEXINGTON AVENUE

(Street)
NEW YORKNY10017

(City)(State)(Zip)
Explanation of Responses:
1. Each of Targa GP Inc. ("GP Inc.") and Targa LP Inc. ("LP Inc.") own 5,449,338 and 6,078,893 common units, respectively, of the Issuer. Targa Resources Investments Inc. ("Targa Investments") indirectly owns all of the interests in GP Inc. and LP Inc. Warburg Pincus Private Equity VIII, L.P. ("WP VIII") and Warburg Pincus Private Equity IX, L.P. ("WP IX") in the aggregate beneficially own 78.76% of Targa Investments. Warburg Pincus Partners, LLC ("WP Partners LLC"), a direct subsidiary of Warburg Pincus & Co. ("WP"), is the sole general partner of WP VIII. Warburg Pincus IX, LLC ("WP IX LLC"), an indirect subsidiary of WP, of which WP Partners LLC is sole member, is the sole general partner of WP IX. WP is the managing member of WP Partners LLC. WP VIII and WP IX are managed by Warburg Pincus LLC ("WP LLC," and together with WP VIII, WP IX, WP Partners LLC, WP IX LLC and WP, the "Warburg Pincus Entities").
2. Charles R. Kaye and Joseph P. Landy are Managing General Partners of WP and Managing Members and Co-Presidents of WP LLC. The Warburg Pincus Entities and Messrs. Kaye and Landy may be deemed to beneficially own all of the reported securities. Each of the Warburg Pincus Entities and Messrs. Kaye and Landy disclaim beneficial ownership of all the reported securities indirectly held by Targa Investments except to the extent of any indirect pecuniary interest therein.
3. On May 28, 2009, the board of directors of Targa Resources GP LLC, the general partner of the Issuer, confirmed that, effective May 19, 2009, 11,528,231 subordinated units converted into an equal number of common units on a one-for-one basis with no additional consideration, due to the satisfaction of the conditions described in Section 5.7(b) of the Issuer's Partnership Agreement. The subordinated units had no expiration date.
 
Remarks:
* Power of Attorney given by Mr. Kaye was previously filed with the SEC on March 2, 2006 as an exhibit to a Schedule 13D filed by Building
Products, LLC with respect to Builders FirstSource, Inc. ** Power of Attorney given by Mr. Landy was previously filed with the
SEC on March 2, 2006 as an exhibit to a Schedule 13D filed by Building Products, LLC with respect to Builders FirstSource Inc.
/s/ Scott A. Arenare, Partner, Warburg Pincus & Co., the Managing Member of Warburg Pincus Partners, LLC, the general partner of Warburg Pincus Private Equity VIII, L.P.06/01/2009
/s/ Scott A. Arenare, Partner, Warburg Pincus & Co., the Managing Member of Warburg Pincus Partners, LLC, the sole member of Warburg Pincus IX LLC, the general partner of Warburg Pincus Private Equity IX, L.P.06/01/2009
/s/ Scott A. Arenare, Partner, Warburg Pincus & Co., the managing member of Warburg Pincus Partners LLC06/01/2009
/s/ Scott A. Arenare, Partner, Warburg Pincus & Co., the Managing Member of Warburg Pincus Partners LLC, the sole member of Warburg Pincus IX LLC06/01/2009
/s/ Scott A. Arenare, Partner of Warburg Pincus & Co.06/01/2009
/s/ Scott A. Arenare, Member06/01/2009
/s/ Scott A. Arenare, Attorney-in-fact for Charles R. Kaye*06/01/2009
/s/ Scott A. Arenare, Attorney-in-fact for Joseph P. Landy**06/01/2009
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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 Number.

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