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 *
ARCLIGHT ENERGY PARTNERS FUND V, L.P.
   2. Issuer Name and Ticker or Trading Symbol
American Midstream Partners, LP [AMID] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director __X__ 10% Owner
_____ Officer (give title below) __X__ Other (specify below)
SEE REMARKS
(Last)
(First)
(Middle)
C/O ARCLIGHT CAPITAL PARTNERS, LLC, 200 CLARENDON STREET, 55TH FLOOR		 3. Date of Earliest Transaction (Month/Day/Year)
04/25/2016
(Street)

BOSTON, MA 02117		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ 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
Series C Convertible Preferred Units (1) 04/25/2016   P(1)   8,571,429     (1)   (1) Common Units 8,571,429 $ 14 8,571,429 I See Footnote (2)
Warrant $ 7.25 04/25/2016   P(3)   800,000   04/25/2016 04/25/2023 Common Units 800,000 (3) 800,000 I See Footnote (2)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
ARCLIGHT ENERGY PARTNERS FUND V, L.P.
C/O ARCLIGHT CAPITAL PARTNERS, LLC
200 CLARENDON STREET, 55TH FLOOR
BOSTON, MA 02117		   X   X   SEE REMARKS
American Midstream GP, LLC
ATTENTION: WILLIAM B. MATHEWS
1400 16TH STREET, SUITE 310
DENVER, CO 80202		   X   X    
ArcLight Capital Holdings, LLC
C/O ARCLIGHT CAPITAL PARTNERS, LLC
200 CLARENDON STREET, 55TH FLOOR
BOSTON, MA 02117		   X   X    
ArcLight Capital Partners, LLC
200 CLARENDON STREET, 55TH FLOOR
BOSTON, MA 02117		   X   X    
Revers Daniel R
C/O ARCLIGHT CAPITAL PARTNERS, LLC
200 CLARENDON STREET, 55TH FLOOR
BOSTON, MA 02117		   X   X    
Magnolia Infrastructure Holdings, LLC
C/O ARCLIGHT CAPITAL PARTNERS, LLC
200 CLARENDON STREET, 55TH FLOOR
BOSTON, MA 02117		   X   X    
Magnolia Infrastructure Partners, LLC
C/O ARCLIGHT CAPITAL PARTNERS, LLC
200 CLARENDON STREET, 55TH FLOOR
BOSTON, MA 02117		   X   X    
High Point Infrastructure Partners, LLC
C/O ARCLIGHT CAPITAL PARTNERS, LLC
200 CLARENDON STREET, 55TH FLOOR
BOSTON, MA 02117		   X   X    

Signatures

 /s/ Daniel R. Revers, MAGNOLIA INFRASTRUCTURE PARTNERS, LLC, By: Daniel R. Revers, President   04/27/2016
**Signature of Reporting Person Date
 /s/ Daniel R. Revers, MAGNOLIA INFRASTRUCTURE HOLDINGS, LLC, By: Daniel R. Revers, President   04/27/2016
**Signature of Reporting Person Date
 /s/ Daniel R. Revers, HIGH POINT INFRASTRUCTURE PARTNERS, LLC, By: Daniel R. Revers, President   04/27/2016
**Signature of Reporting Person Date
 /s/ William B. Mathews, AMERICAN MIDSTREAM GP, LLC, By: William B. Mathews, Senior Vice President   04/27/2016
**Signature of Reporting Person Date
 /s/ Daniel R. Revers, ARCLIGHT CAPITAL HOLDINGS, LLC, By: Daniel R. Revers, Managing Partner   04/27/2016
**Signature of Reporting Person Date
 /s/ Daniel R. Revers, ARCLIGHT CAPITAL PARTNERS, LLC, By: Daniel R. Revers, Managing Partner   04/27/2016
**Signature of Reporting Person Date
 /s/ Daniel R. Revers, ARCLIGHT ENERGY PARTNERS FUND V, L.P., By: ArcLight PEF GP V, LLC, its General Partner, By: ArcLight Capital Holdings, LLC, its Manager, By: Daniel R. Revers, Managing Partner   04/27/2016
**Signature of Reporting Person Date
 /s/ Daniel R. Revers   04/27/2016
**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) Represents Series C Convertible Preferred Units (the "Series C Units") purchased by Magnolia Infrastructure Holdings, LLC ("Magnolia Holdings"). The Series C Units have no expiration date and are convertible into common units of the Issuer at anytime at the holder's election, initially on a one-for-one basis, subject to anti-dilution and certain other adjustments. Subject to certain restrictions, the Issuer may exercise the right to require Magnolia Holdings to sell, assign and transfer all or a portion of the then outstanding Series C Units to the Issuer.
(2) ArcLight Energy Partners Fund V, L.P. ("Fund V") directly owns Magnolia Holdings.
(3) As an inducement to enter into that certain Securities Purchase Agreement, dated April 25, 2016, the Issuer has agreed to issue to Magnolia Holdings a warrant to purchase up to 800,000 Common Units of the Issuer (subject to adjustment in accordance with the warrant) at an exercise price of $7.25 per Common Unit.
 
Remarks:
ArcLight Capital Holdings, LLC ("ArcLight Holdings") is the sole manager and member of ArcLight Capital Partners, LLC ("ArcLight Partners" and, together with ArcLight Holdings and Fund V, the "ArcLight Entities"). ArcLight Partners is the investment adviser to Fund V. ArcLight Holdings is the manager of the general partner of Fund V.  Mr. Revers is a manager of ArcLight Holdings and a managing partner of ArcLight Partners and has certain voting and dispositive rights as a member of ArcLight Partners' investment committee.  Fund V directly owns Busbar II, LLC ("Busbar") and Magnolia Holdings, which owns Magnolia Infrastructure Partners, LLC ("Magnolia").  Fund V, through indirectly controlled subsidiaries, also owns approximately 90% of the ownership interest in High Point Infrastructure Partners, LLC ("HPIP"), which in turn owns 95% of American Midstream GP, LLC (the "General Partner").  As a result, the ArcLight Entities and Mr. Revers may be deemed to indirectly beneficially own the securities of the Issuer held by Magnolia Holdings, Busbar, Magnolia, HPIP and the General Partner, but disclaim beneficial ownership except to the extent of their respective pecuniary interests therein.

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