SEC Form 4

FORM 4		UNITED 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 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	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* ARCLIGHT ENERGY PARTNERS FUND V, L.P. (Last) (First) (Middle) C/O ARCLIGHT CAPITAL PARTNERS, LLC 200 CLARENDON STREET 55TH FLOOR (Street) BOSTON MA 02117 (City) (State) (Zip)	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) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 01/26/2016
	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 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. 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
Common Units (Limited Partner Interests)	01/26/2016		P		108,600(1)	A	$6.7(2)	1,397,956(3)(4)	I	See Footnote(5)
Common Units (Limited Partner Interests)	01/27/2016		P		108,600(1)	A	$7.32(6)	1,506,556(3)(4)	I	See Footnote(7)
Common Units (Limited Partner Interests)	01/28/2016		P		108,600(1)	A	$7.64(8)	1,615,156(3)(4)	I	See Footnote(9)

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 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: 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

1. Name and Address of Reporting Person* ARCLIGHT ENERGY PARTNERS FUND V, L.P. (Last) (First) (Middle) C/O ARCLIGHT CAPITAL PARTNERS, LLC 200 CLARENDON STREET 55TH FLOOR (Street) BOSTON MA 02117 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* American Midstream GP, LLC (Last) (First) (Middle) ATTENTION: WILLIAM B. MATHEWS 1400 16TH STREET, SUITE 310 (Street) DENVER CO 80202 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Magnolia Infrastructure Partners, LLC (Last) (First) (Middle) C/O ARCLIGHT CAPITAL PARTNERS, LLC 200 CLARENDON STREET, 55TH FLOOR (Street) BOSTON MA 02117 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* High Point Infrastructure Partners, LLC (Last) (First) (Middle) C/O ARCLIGHT CAPITAL PARTNERS, LLC 200 CLARENDON STREET, 55TH FLOOR (Street) BOSTON MA 02117 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* ArcLight Capital Holdings, LLC (Last) (First) (Middle) C/O ARCLIGHT CAPITAL PARTNERS, LLC 200 CLARENDON STREET, 55TH FLOOR (Street) BOSTON MA 02117 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* ArcLight Capital Partners, LLC (Last) (First) (Middle) 200 CLARENDON STREET, 55TH FLOOR (Street) BOSTON MA 02117 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Revers Daniel R (Last) (First) (Middle) C/O ARCLIGHT CAPITAL PARTNERS, LLC 200 CLARENDON STREET, 55TH FLOOR (Street) BOSTON MA 02117 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. Common units were purchased pursuant to a 10b5-1 plan entered into on January 8, 2016.

2. The price reported in Column 4 is a weighted average price. These common units were purchased in multiple transactions ranging from $6.20 to $7.14, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units purchased at each separate price within the range set forth above.

3. Does not include (i) 6,477,957 Series A-1 Convertible Preferred Units (the "Series A-1 Units") held directly by High Point Infrastructure Partners, LLC ("HPIP"), which do not have an expiration date and are convertible in whole or in part on an approximate 1.098:1 basis into common units at any time after January 1, 2014, (ii) 2,762,503 Series A-2 Convertible Preferred Units held by Magnolia (as defined below), which do not have an expiration date and are convertible in whole or in part on an approximate 1.098:1 basis into common units at any time or

4. (Continued from Footnote 2) (iii) 1,349,609 Series B Convertible Preferred Units held directly by American Midstream GP, LLC, the general partner of the Issuer (the "General Partner"), which do not have an expiration date and are convertible in whole or in part on a one-for-one basis into common units at any time after January 22, 2016 or, prior to that date, with the consent of the required lenders under the Issuer's credit agreement at the reporting person's election.

5. Busbar II, LLC ("Busbar"), a direct, wholly owned subsidiary of ArcLight Energy Partners Fund V, L.P. ("Fund V"), directly owns 779,035 common units out of the 1,397,956 common units reflected in Column 5. Magnolia Infrastructure Partners, LLC, an indirect, wholly owned subsidiary of Fund V ("Magnolia"), directly owns 618,921 common units out of the 1,397,956 common units reflected in Column 5.

6. The price reported in Column 4 is a weighted average price. These common units were purchased in multiple transactions ranging from $6.65 to $7.71, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units purchased at each separate price within the range set forth above.

7. Busbar directly owns 887,635 common units out of the 1,506,556 common units reflected in Column 5. Magnolia directly owns 618,921 common units out of the 1,506,556 common units reflected in Column 5.

8. The price reported in Column 4 is a weighted average price. These common units were purchased in multiple transactions ranging from $7.31 to $7.98, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units purchased at each separate price within the range set forth above.

9. Busbar directly owns 996,235 common units out of the 1,615,156 common units reflected in Column 5. Magnolia directly owns 618,921 common units out of the 1,615,156 common units reflected in Column 5.

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, indirectly owns Magnolia and, through indirectly controlled subsidiaries, Fund V owns approximately 90% of the ownership interest in HPIP, which in turn owns 95% of 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 Busbar, Magnolia, HPIP and the General Partner, but disclaim beneficial ownership except to the extent of their respective pecuniary interests therein.

	/s/ Daniel R. Revers, MAGNOLIA INFRASTRUCTURE PARTNERS, LLC, By: Daniel R. Revers, President	01/28/2016
	/s/ Daniel R. Revers, HIGH POINT INFRASTRUCTURE PARTNERS, LLC, By: Daniel R. Revers, President	01/28/2016
	/s/ William B. Mathews, AMERICAN MIDSTREAM GP, LLC, By: William B. Mathews, Senior Vice President	01/28/2016
	/s/ Daniel R. Revers, ARCLIGHT CAPITAL HOLDINGS, LLC, By: Daniel R. Revers, Managing Partner	01/28/2016
	/s/ Daniel R. Revers, ARCLIGHT CAPITAL PARTNERS, LLC, By: Daniel R. Revers, Managing Partner	01/28/2016
	/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	01/28/2016
	/s/ Daniel R. Revers	01/28/2016
	** 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.
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.