FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF 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

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1. Name and Address of Reporting Person *   Highstar Capital IV, L.P. 2. Date of Event Requiring Statement (Month/Day/Year) 05/11/2016 3. Issuer Name and Ticker or Trading Symbol NGL Energy Partners LP [NGL] (Last) (First) (Middle) 277 PARK AVENUE, 45TH FLOOR 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) NEW YORK, NY 10172 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 Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
10.75% Class A Convertible Preferred Units	  (1)(2)(3)	  (1)(2)(3)	Common Units	(1) (2) (3)	$ (1) (2) (3)	I	See footnotes (6) (7) (8) (9)
Warrants (right to buy)	  (4)(5)	  (4)(5)	Common Units	1,822,963	$ 0.01	I	See footnotes (6) (7) (8) (9)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Highstar Capital IV, L.P. 277 PARK AVENUE, 45TH FLOOR NEW YORK, NY 10172	  X	Â	Â	Â

Signatures

HIGHSTAR CAPITAL IV, L.P., By: Highstar Capital GP IV, L.P., its general partner, By: Highstar Capital GP IV, LLC, its general partner, /s/ Christopher Beall, Authorized Person		06/09/2016
**Signature of Reporting Person		Date
HIGHSTAR CAPITAL IV, L.P., By: Highstar Capital GP IV, L.P., its general partner, By: Highstar Capital GP IV, LLC, its general partner, /s/ James Burchetta, Authorized Person		06/09/2016
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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)	Highstar NGL Prism/IV-A Interco LLC ("Highstar Prism") holds an aggregate of 3,407,477 10.75% Class A Convertible Preferred Units ("Preferred Units") and Highstar NGL Main Interco LLC ("Highstar Main" and together with Highstar Prism, the "Purchasers") holds an aggregate of 4,901,760 Preferred Units. Pursuant to the terms of that certain Class A Convertible Preferred Unit and Warrant Purchase Agreement, dated April 21, 2016, by and among NGL Energy Partners LP (the "Partnership") and the Purchasers (the "Purchase Agreement"), and the terms of the Fifth Amendment to the Second Amended and Restated Agreement of Limited Partnership of the Partnership, the Preferred Units are convertible into common units representing limited partner interests in the Partnership ("Common Units") any time after the third anniversary (the "Initial Conversion Date") of May 11, 2016 (the "Closing Date").
(2)	The Preferred Units are convertible at the quotient (the "Conversion Rate"), per unit and subject to certain adjustments, of (i) $12.035 (the "Class A Preferred Unit Price") and (ii) the Class A Preferred Unit Price; provided, however, that if the volume-weighted average trading price (the "VWAP Price") for the fifteen (15) consecutive trading days ending on the trading day immediately preceding the Initial Conversion Date is less than the Class A Preferred Unit Price (such price, the "Adjusted VWAP Price"), then at all times on and after the Initial Conversion Date, the figure used in clause (ii) shall be the greater of (A) the Adjusted VWAP Price and (B) $5.00 (subject to adjustment for any splits, combinations or recapitalizations).
(3)	At any time after the eighth anniversary of the Closing Date, the Partnership shall have the right to convert all of the outstanding Preferred Units into Common Units at the Conversion Rate then in effect, provided that the Partnership has paid in full all quarterly distributions on the outstanding Preferred Units and that certain conditions described in the Purchase Agreement have been satisfied. Upon a Change of Control (as defined in the Purchase Agreement) of the Partnership, each Preferred Unit holder shall have the right, at its election, to, among other things, convert all of the Preferred Units then held by such Preferred Unit holder at the Conversion Rate then in effect.
(4)	Pursuant to the terms of that certain Warrant, original issue date May 11, 2016, Highstar Prism holds warrants (the "Prism Warrants") exercisable into 747,566 Common Units at an exercise price per unit of $0.01. Pursuant to the terms of that certain Warrant, original issue date May 11, 2016, Highstar Main holds warrants (the "Main Warrants" and together with the Prism Warrants, the "Warrants") exercisable into 1,075,397 Common Units at an exercise price per unit of $0.01.
(5)	One-third of the Warrants may be exercised from and after the first anniversary of the Closing Date, another one-third of the Warrants may be exercised from and after the second anniversary of the Closing Date; and all Warrants shall be exercisable from and after the third anniversary of the Closing Date. Upon the occurrence of a Change of Control (as defined in the Purchase Agreement) or in the event the Partnership exercises a redemption right with respect to the Preferred Units, all unvested Warrants shall immediately vest and be exercisable in full. Unexercised Warrants will expire on the eighth anniversary of the Closing Date.
(6)	The securities are owned directly by Highstar Prism and Highstar Main. The members of Highstar Prism are NGL Prism/IV-A Blocker LLC and Highstar Capital GP IV, L.P. ("Highstar GP IV"). The members of NGL Prism/IV-A Blocker LLC are Highstar Capital IV-A, L.P. ("Highstar IV-A") and Highstar Capital IV Prism, L.P. ("Highstar IV Prism"), and the non-member manager of NGL Prism/IV-A Blocker LLC is Highstar GP IV. The members of Highstar Main are NGL Main Blocker LLC and Highstar Capital IV, L.P. ("Highstar IV"), and the non-member manager of Highstar Main is Highstar GP IV. Highstar IV is the sole member of NGL Main Blocker LLC and Highstar GP IV is the non-member manager of NGL Main Blocker LLC.
(7)	Highstar GP IV is the general partner of each of Highstar IV, Highstar IV-A and Highstar IV Prism. The general partner of Highstar GP IV. is Highstar Capital GP IV, LLC. The sole member of Highstar Capital GP IV, LLC is Highstar Capital GP IV Holdings. The sole director of Highstar Capital GP IV Holdings is Oaktree Capital Management, L.P., and the sole shareholder of Highstar Capital GP IV Holdings is Oaktree Infrastructure, L.P. The general partner of Oaktree Infrastructure, L.P. is Oaktree Fund GP IIA, LLC. The managing member of Oaktree Fund GP IIA, LLC is Oaktree Fund GP II, L.P., and the general partner of Oaktree Fund GP II, L.P. is Oaktree Capital II, L.P. The general partner of each of Oaktree Capital II, L.P. and Oaktree Capital Management, L.P. is Oaktree Holdings, Inc. The sole shareholder of Oaktree Holdings, Inc. is Oaktree Capital Group, LLC.
(8)	The duly elected manager of Oaktree Capital Group, LLC is Oaktree Capital Group Holdings GP, LLC. The members of Oaktree Capital Group Holdings GP, LLC are Howard Marks, Bruce Karsh, Jay Wintrob, John Frank, David Kirchheimer, Stephen Kaplan, and Sheldon Stone, who, by virtue of their membership interests in Oaktree Capital Group Holdings GP, LLC, may be deemed to share voting and dispositive power with respect to the Preferred Units and Warrants held by Highstar Prism and Highstar Main.
(9)	Highstar IV may be deemed to be a director by deputization as a result of its ability to appoint a director to the board of directors of the Partnership, pursuant to that certain Board Representation and Observation Rights Agreement, dated as of May 11, 2016, by and among the Partnership, NGL Energy Holdings LLC, the Purchasers and Highstar Capital IV, L.P.

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