Statement of Changes in Beneficial Ownership (4)

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	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response... 0.5
	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) 5/13/2019
(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)
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

*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)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)			11. Nature of Indirect Beneficial Ownership (Instr. 4)
Series A-1 Convertible Preferred Units	⁽¹⁾	5/13/2019		A		239779		⁽¹⁾	⁽¹⁾	Common Units (limited partner interests)	239779.0	$13.66	10479528	I	(1)
Series A-2 Convertible Preferred Units	⁽²⁾	5/13/2019		A		102729		⁽²⁾	⁽²⁾	Common Units (limited partner interests)	131606.0	$13.66	4489748	I	(2)
Series C Convertible Preferred Units	⁽³⁾	5/13/2019		A		280734		⁽³⁾	⁽³⁾	Common Units (limited partner interests)	281127.0	$13.98	9808777	I	(3)

Explanation of Responses:
(1)	Represents Series A-1 Convertible Preferred Units (the "Series A-1 Units) held directly by American Midstream GP, LLC (the "General Partner"), the general partner of American Midstream Partners, LP (the "Issuer") 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 1:1.2811 at any time.
(2)	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 in whole or part into Common Units at a conversion ratio of 1:1.2811 at any time.
(3)	Represents Series C Convertible Preferred Units (the "Series C Units") held by Magnolia Infrastructure Holdings, LLC ("Magnolia Holdings") received on a quarterly basis as payment-in-kind in lieu of cash distributions on the Series C Units owned on the distribution record date. The Series C Units have no expiration date and are convertible in whole or part into Common Units at a conversion ratio of 1:1.0014 at any time.

Remarks:
(A) ArcLight Capital Holdings, LLC ("ArcLight") is the sole manager and member of ArcLight Capital Partners, LLC ("ArcLight Partners" and, together with ArcLight Holdings and ArcLight Energy Partners Fund V, L.P. ("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 High Point Infrastructure Holdings, LLC ("HPIP"). HPIP and AMID GP Holdings LLC, a subsidiary of Magnolia Holdings, own respectively, approximately 86% and 14% 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 Magnolia Holdings, Busbar, Magnolia, HPIP and the General Partner, but disclaim beneficial ownership except to the extent of their respective pecuniary interests therein. (B) Some of the entity names in the signature blocks have been abbreviated due to the limitations of the electronic filing system. Please refer to the text above for the complete legal names of such entities.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	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
American Midstream GP, LLC 2103 CITYWEST BLVD., BLDG. 4, SUITE 800 HOUSTON, TX 77042	X	X
High Point Infrastructure Partners, LLC C/O ARCLIGHT CAPITAL PARTNERS, LLC 200 CLARENDON STREET, 55TH FLOOR BOSTON, MA 02117	X	X		See Remarks
AMID GP Holdings, 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

Signatures
/s/ Daniel R. Revers FUND V By: ArcLight PEF GP V, LLC, its General Partner By: ArcLight Capital Holdings, LLC, its Manager By: ACHP II, L.P., its Managing Member By: ACH GP, LLC, its General Partner By: Daniel R. Revers, Manager		5/15/2019
^** Signature of Reporting Person		Date
/s/ Daniel R. Revers, President MAGNOLIA INFRASTRUCTURE HOLDINGS, LLC By: Daniel R. Revers, President		5/15/2019
^** Signature of Reporting Person		Date
/s/ Daniel R. Revers MAGNOLIA INFRASTRUCTURE PARTNERS, LLC By: Daniel R. Revers, President		5/15/2019
^** Signature of Reporting Person		Date
/s/ Daniel R. Revers AMERICAN MIDSTREAM GP, LLC By: its Class A Member, High Point Infrastructure Partners, LLC By: Daniel R. Revers, President		5/15/2019
^** Signature of Reporting Person		Date
/s/ Daniel R. Revers HIGH POINT INFRASTRUCTURE PARTNERS, LLC By: Daniel R. Revers, President		5/15/2019
^** Signature of Reporting Person		Date
/s/ Daniel R. Revers AMID GP HOLDINGS, LLC By: Arclight PEF GP V, LLC, its General Partner By: Arclight Capital Holdings, LLC, its Manager By: ACHP II L.P. its Managing Member By: ACH GP, LLC, its General Partner By: Daniel R. Revers, Manager		5/15/2019
^** Signature of Reporting Person		Date
/s/ Daniel R. Revers ARCLIGHT CAPITAL HOLDINGS, LLC By: ACHP II, L.P., its Managing Member By: ACH GP, LLC, its General Partner By: Daniel R. Revers, Manager		5/15/2019
^** Signature of Reporting Person		Date
/s/ Daniel R. Revers ARCLIGHT CAPITAL PARTNERS, LLC By: Daniel R. Revers, Managing Partner		5/15/2019
^** Signature of Reporting Person		Date
/s/ Daniel R. Revers Daniel R. Revers		5/15/2019
^** 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 control number.