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
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                      	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	                      	

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 (MM/DD/YYYY)

5/12/2017		
(Street)

BOSTON, MA 02117
(City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)

 	6. Individual or Joint/Group Filing (Check Applicable Line)

___ Form filed by One Reporting Person
_ X _ Form 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. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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				

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)	
1. Title of Derivate Security
(Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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	7. Title and Amount of Securities Underlying Derivative Security
(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 A-1 Convertible Preferred Units  	  (1)	5/12/2017  	 	J   (1)	  	93509   	  	  (1)	  (1)	Common Units  	104225  	$15.70  	7280867   (2)	I  	See Footnote   (1)	
Series A-2 Convertible Preferred Units  	  (3)	5/12/2017  	 	J   (3)	  	40062   	  	  (3)	  (3)	Common Units  	44653  	$15.70  	3119346   (4)	I  	See Footnote   (3)	

Explanation of Responses:	
(1) 	Represents Series A-1 Convertible Preferred Units (the "Series A-1 Units") held directly by High Point Infrastructure Partners, LLC ("HPIP") received on a quarterly basis as payment-in-kind in lieu of cash distributions on the Series A-1 Units owned on the distribution record date. The Series A-1 Units have no expiration date and are convertible in whole or in part into common units of the Issuer ("Common Units") at a conversion ratio of 1:1146 at any time.	
(2) 	Represents the aggregate number of Series A-1 Units held after the acquisition of Series A-1 Units reported in Column 5 of this line item.	
(3) 	Represents Series A-2 Convertible Preferred Units (the "Series A-2 Units") held by Magnolia Infrastructure Partners, LLC ("Magnolia") received on a quarterly basis as payment-in-kind in lieu of cash distributions on the Series A-2 Units owned on the distribution record date. The Series A-2 Units have no expiration date and are convertible into Common Units at a conversion ratio of 1:1146 at any time.	
(4) 	Represents the aggregate number of Series A-2 Units held after the acquisition of Series A-2 Units reported in Column 5 of this line item.	

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. Fund V, through Magnolia, also owns approximately 90% of the ownership interest in HPIP. HPIP and Magnolia Holdings own respectively, approximately 78% and approximately 22% of American Midstream GP, LLC, (the "General Partner"), the general partner of the Issuer. 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.	

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	
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			
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			
American Midstream GP, LLC
ATTENTION: REGINA GREGORY
2103 CITYWEST BLVD., BLDG. 4 - 7TH FLR
HOUSTON, TX 77042	X	X			

Signatures		
/s/ Daniel R. Revers, MAGNOLIA INFRASTRUCTURE PARTNERS, LLC, By: Daniel R. Revers, President		5/12/2017	
** Signature of Reporting Person		Date
	
/s/ Daniel R. Revers, MAGNOLIA INFRASTRUCTURE HOLDINGS, LLC, By: Daniel R. Revers, President		5/12/2017	
** Signature of Reporting Person		Date
	
/s/ Daniel R. Revers, HIGH POINT INFRASTRUCTURE PARTNERS, LLC, By: Daniel R. Revers, President		5/12/2017	
** Signature of Reporting Person		Date
	
/s/ Regina Gregory, AMERICAN MIDSTREAM GP, LLC, By: Regina Gregory, Senior Vice President		5/12/2017	
** Signature of Reporting Person		Date
	
/s/ Daniel R. Revers, ARCLIGHT CAPITAL HOLDINGS, LLC, By: Daniel R. Revers, Managing Partner		5/12/2017	
** Signature of Reporting Person		Date
	
/s/ Daniel R. Revers, ARCLIGHT CAPITAL PARTNERS, LLC, By: Daniel R. Revers, Managing Partner		5/12/2017	
** 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		5/12/2017	
** Signature of Reporting Person		Date
	
/s/ Daniel R. Revers, Daniel R. Revers		5/12/2017	
** Signature of Reporting Person		Date

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.	
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