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
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Mason Thomas P
  2. Issuer Name and Ticker or Trading Symbol
Energy Transfer Partners, L.P. [ETP]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
See Remarks
(Last)
(First)
(Middle)
3738 OAK LAWN AVENUE
3. Date of Earliest Transaction (Month/Day/Year)
04/30/2015
(Street)

DALLAS, TX 75219
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

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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 V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Phantom Units with DER (1) (2) 04/30/2015   A   10,104     (3)   (4) Common Units 10,104 $ 0 10,104 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Mason Thomas P
3738 OAK LAWN AVENUE
DALLAS, TX 75219
      See Remarks  

Signatures

 Peggy J. Harrison as Attorney-in-Fact for Thomas P. Mason   05/04/2015
**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) The reporting person received the derivative securities pursuant to the Agreement and Plan of Merger, dated as of January 25, 2015, as amended by Amendment No. 1 thereto, dated as of February 18, 2015 (as amended, the "Merger Agreement") by and among Regency Energy Partners LP ("Regency"), Regency GP LP, Energy Transfer Partners, L.P. ("ETP"), Energy Transfer Partners GP, L.P., Rendezvous I LLC ("Rendezvous I"), Rendezvous II LLC and, solely for purposes of certain provisions therein, Energy Transfer Equity, L.P., under which Regency merged with Rendezvous I (the "Merger"), with Regency surviving the merger as a wholly owned subsidiary of ETP. (Continued in Footnote 2)
(2) Upon the April 30, 2015 closing of the Merger, among other things, each award of Regency phantom units (other than phantom units held by the chief executive officer and non-employee directors of Regency) was converted into the right to receive an award of phantom units of ETP relating to a number of ETP common units that reflects an exchange ratio of 0.4124 ETP common units for each Regency common unit. Each phantom unit is the economic equivalent of one common unit representing a limited partner interest in ETP and is accompanied by a distribution equivalent right, entitling the holder to an amount equal to any cash distributions paid on each of ETP's common units.
(3) 60% of the total unvested converted phantom units will cliff vest on December 5, 2017, and the remaining 40% of the total unvested converted phantom units will vest on December 5, 2019. On such dates, the Partnership will issue ETP common units in settlement of the phantom units.
(4) Not applicable
 
Remarks:
Senior Vice President, General Counsel and Secretary

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