Document:

EX-4.1

 Exhibit 4.1 

Execution Version 

AMERICAN MIDSTREAM PARTNERS, LP 

AMERICAN MIDSTREAM FINANCE CORPORATION 

REGISTRATION RIGHTS AGREEMENT 

This REGISTRATION RIGHTS AGREEMENT is dated as of December 19, 2017 (the “Agreement”), by and among AMERICAN MIDSTREAM
PARTNERS, LP, a Delaware limited partnership (the “Partnership”), and AMERICAN MIDSTREAM FINANCE CORPORATION, a Delaware corporation (“Finance Corp.” and, together with the Partnership, the
“Issuers”), the subsidiaries of the Partnership named in Schedule I hereto (each individually, a “Guarantor” and collectively, the “Guarantors”), and the several Initial Purchasers listed in
Schedule I to the Purchase Agreement (defined below) (the “Initial Purchasers”). 
 The Issuers, the Guarantors and the
Initial Purchasers are parties to the Purchase Agreement dated December 14, 2017 (the “Purchase Agreement”), which provides for the sale by the Issuers to the Initial Purchasers of $125,000,000 aggregate principal amount of the
Issuers’ 8.500% Senior Notes due 2021 (including the unconditional guarantees thereof on an unsecured senior basis as to principal, premium, if any, and interest by the Guarantors, the “Securities”). The Securities will be
issued as “Additional Notes” (as such term is defined in the Indenture) under the Indenture. The Issuers have previously issued $300,000,000 aggregate principal amount of 8.500% Senior Notes due 2021 (the “Existing
Securities”) under the Indenture. 
 As an inducement to the Initial Purchasers to enter into the Purchase Agreement, the Issuers
have agreed to provide to the Initial Purchasers and their direct and indirect transferees the registration rights set forth in this Agreement. The execution and delivery of this Agreement is a condition to the Initial Purchasers’ obligations
under the Purchase Agreement. 
 In consideration of the foregoing, the parties hereto agree as follows: 

1. Definitions. As used in this Agreement, the following terms shall have the following meanings: 

“Additional Guarantor” shall mean any subsidiary of the Partnership that executes a Subsidiary Guarantee under the Indenture
after the date of this Agreement. 
 “Agreement” shall have the meaning set forth in the preamble. 

“Business Day” shall mean any day that is not a Saturday, Sunday or other day on which commercial banks in New York City are
authorized or required by law to remain closed. 
 “Closing Date” shall mean the Closing Date as defined in the Purchase
Agreement. 
 “Exchange Act” shall mean the Securities Exchange Act of 1934, as amended. 

“Exchange Dates” shall have the meaning set forth in Section 2(a)(ii) hereof. 

 “Exchange Offer” shall mean the exchange offer by the Partnership and the
Guarantors of Exchange Securities for Registrable Securities pursuant to Section 2(a) hereof. 
 “Exchange Offer
Registration” shall mean a registration under the Securities Act effected pursuant to Section 2(a) hereof. 

“Exchange Offer Registration Statement” shall mean an exchange offer registration statement on Form S-4 (or, if applicable, on another appropriate form) and all amendments and supplements to such registration statement, in each case including the Prospectus contained therein, all exhibits thereto and any document
incorporated by reference therein. 
 “Exchange Securities” shall mean senior notes issued by the Issuers and guaranteed by
the Guarantors under the Indenture containing terms substantially identical to the Securities (except that the Exchange Securities will not be subject to restrictions on transfer or to any increase in annual interest rate for failure to comply with
this Agreement) and to be offered to Holders of Securities in exchange for Securities pursuant to the Exchange Offer. 
 “Existing
Securities” shall have the meaning set forth in the preamble. 
 “Finance Corp.” shall have the meaning set forth
in the preamble. 
 “Free Writing Prospectus” means each free writing prospectus (as defined in Rule 405 under the
Securities Act) prepared by or on behalf of the Issuers or used or referred to by the Issuers in connection with the sale of the Securities or Exchange Securities. 

“Guarantors” shall have the meaning set forth in the preamble and shall also include any Guarantor’s successors and any
Additional Guarantors. 
 “Holders” shall mean the Initial Purchasers, for so long as they own any Registrable Securities,
and each of their successors, assigns and direct and indirect transferees who become owners of Registrable Securities under the Indenture; provided that for purposes of Sections 4 and 5 of this Agreement, the term “Holders” shall include
Participating Broker-Dealers. 
 “Indemnified Person” shall have the meaning set forth in Section 5(c) hereof. 

“Indemnifying Person” shall have the meaning set forth in Section 5(c) hereof. 

“Indenture” shall mean the Indenture relating to the Securities dated as of December 28, 2016, as supplemented as of
March 8, 2017 and September 8, 2017, among the Issuers, the Guarantors and Wells Fargo Bank, National Association, as trustee, which Indenture also governs the Existing Securities, and as the same may be amended from time to time in
accordance with the terms thereof. 
 “Initial Purchasers” shall have the meaning set forth in the preamble. 

“Inspector” shall have the meaning set forth in Section 3(m) hereof. 

“Issuer Information” shall have the meaning set forth in Section 5(a) hereof. 

  
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 “Issuers” shall have the meaning set forth in the preamble. 

“Majority Holders” shall mean the Holders of a majority of the aggregate principal amount of outstanding Registrable
Securities; provided that whenever the consent or approval of Holders of a specified percentage of Registrable Securities is required hereunder, Registrable Securities owned directly or indirectly by the Issuers or any of their affiliates shall not
be counted in determining whether such consent or approval was given by the Holders of such required percentage or amount; and provided, further, that if the Issuers shall issue any additional Securities under the Indenture prior to the consummation
of the Exchange Offer, or, if applicable, the effectiveness of any Shelf Registration Statement, such additional Securities and Registrable Securities to which this Agreement relates shall be treated together as one class for purposes of determining
whether the consent or approval of Holders of a specified percentage of Registrable Securities has been obtained. 
 “Participating
Broker-Dealers” shall have the meaning set forth in Section 4(a) hereof. 
 “Partnership” shall have the
meaning set forth in the preamble. 
 “Person” shall mean an individual, partnership, limited liability company,
corporation, trust or unincorporated organization, or a government or agency or political subdivision thereof. 

“Prospectus” shall mean the prospectus included in, or, pursuant to the rules and regulations of the Securities Act, deemed a
part of, a Registration Statement, including any preliminary prospectus, and any such prospectus as amended or supplemented by any prospectus supplement, including a prospectus supplement with respect to the terms of the offering of any portion of
the Registrable Securities covered by a Shelf Registration Statement, and by all other amendments and supplements to such prospectus, and in each case including any document incorporated by reference therein. 

“Purchase Agreement” shall have the meaning set forth in the preamble. 

“Registrable Securities” shall mean the Securities; provided that the Securities shall cease to be Registrable Securities on
the earliest of (i) when a Registration Statement with respect to such Securities has been declared effective under the Securities Act and such Securities have been exchanged or disposed of pursuant to such Registration Statement or
(ii) when such Securities cease to be outstanding. 
 “Registration Expenses” shall mean any and all expenses incident
to performance of or compliance by the Issuers and the Guarantors with this Agreement, including, without limitation, (i) all SEC, stock exchange or Financial Industry Regulatory Authority registration and filing fees, (ii) all fees and
expenses incurred in connection with compliance with state securities or blue sky laws (including reasonable fees and disbursements of counsel for any Underwriters or Holders in connection with blue sky qualification of any Exchange Securities or
Registrable Securities), (iii) all expenses of any Persons in preparing or assisting in preparing, word processing, printing and distributing any Registration Statement, any Prospectus and any amendments or supplements thereto, any underwriting
agreements, securities sales agreements or other similar agreements and any other documents relating to the performance of and compliance with this Agreement, (iv) all rating agency fees, (v) all fees and disbursements relating to the

  
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qualification of the Indenture under applicable securities laws, (vi) the fees and disbursements of the Trustee and its counsel, (vii) the fees and disbursements of counsel for the
Issuers and the Guarantors and, in the case of a Shelf Registration Statement, the reasonable fees and disbursements of one counsel for the Holders (which counsel shall be selected by the Majority Holders and which counsel may also be counsel for
the Initial Purchasers) and (viii) the fees and disbursements of the independent public accountants of the Issuers, including the expenses of any special audits or “comfort” letters required by or incident to the performance of and
compliance with this Agreement, but excluding fees and expenses of counsel to the Underwriters (other than fees and expenses set forth in clause (ii) above) or the Holders and underwriting discounts and commissions, brokerage commissions and
transfer taxes, if any, relating to the sale or disposition of Registrable Securities by a Holder. 
 “Registration
Statement” shall mean any registration statement filed under the Securities Act of the Issuers and the Guarantors that covers any of the Exchange Securities or Registrable Securities pursuant to the provisions of this Agreement and all
amendments and supplements to any such registration statement, including post-effective amendments, in each case including the Prospectus contained therein or deemed a part thereof, all exhibits thereto and any document incorporated by reference
therein. 
 “SEC” shall mean the Securities and Exchange Commission. 

“Securities” shall have the meaning set forth in the preamble. 

“Securities Act” shall mean the Securities Act of 1933, as amended from time to time. 

“Shelf Additional Interest Date” shall have the meaning set forth in Section 2(d) hereof. 

“Shelf Effectiveness Period” shall have the meaning set forth in Section 2(b) hereof. 

“Shelf Registration” shall mean a registration effected pursuant to Section 2(b) hereof. 

“Shelf Registration Statement” shall mean a “shelf” registration statement of the Issuers and the Guarantors that
covers all or a portion of the Registrable Securities (but no other securities unless approved by a majority of the Holders whose Registrable Securities are to be covered by such Shelf Registration Statement) on an appropriate form under Rule 415
under the Securities Act, or any similar rule that may be adopted by the SEC, and all amendments and supplements to such registration statement, including post-effective amendments, in each case including the Prospectus contained therein or deemed a
part thereof, all exhibits thereto and any document incorporated by reference therein. 
 “Shelf Request” shall have the
meaning set forth in Section 2(b) hereof. 
 “Subsidiary Guarantees” shall mean the guarantees of the Securities and
the Exchange Securities by the Guarantors under the Indenture. 
 “Target Registration Date” shall have the meaning set
forth in Section 2(d) hereof. 

  
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 “Trust Indenture Act” shall mean the Trust Indenture Act of 1939, as amended
from time to time. 
 “Trustee” shall mean the trustee with respect to the Securities under the Indenture. 

“Underwriter” shall have the meaning set forth in Section 3 hereof. 

“Underwritten Offering” shall mean an offering in which Registrable Securities are sold to an Underwriter for reoffering to
the public. 
 2. Registration Under the Securities Act. (a) To the extent not prohibited by any applicable law or applicable
interpretations of the staff of the SEC, the Issuers shall use their commercially reasonable best efforts to (i) cause to be filed an Exchange Offer Registration Statement covering an offer to the Holders to exchange all the Registrable
Securities for Exchange Securities, (ii) consummate the Exchange Offer no later than December 23, 2017 and (iii) have such Registration Statement remain effective until 180 days after the last Exchange Date for use by one or more
Participating Broker-Dealers. The Issuers and the Guarantors shall commence the Exchange Offer promptly after the Exchange Offer Registration Statement is declared effective by the SEC. 

The Issuers and the Guarantors shall commence the Exchange Offer by mailing the related Prospectus, appropriate letters of transmittal and
other accompanying documents to each Holder stating, in addition to such other disclosures as are required by applicable law, 
 (i) that
the Exchange Offer is being made pursuant to this Agreement and that all Registrable Securities validly tendered and not properly withdrawn will be accepted for exchange; 

(ii) the dates of acceptance for exchange (which shall be a period of at least 20 Business Days from the date such notice is mailed) (the
“Exchange Dates”); 
 (iii) that any Registrable Security not tendered will remain outstanding and continue to accrue
interest but will not retain any rights under this Agreement, except as otherwise specified herein; 
 (iv) that any Holder electing to have
a Registrable Security exchanged pursuant to the Exchange Offer will be required to (A) surrender such Registrable Security, together with the appropriate letters of transmittal, to the institution and at the address and in the manner specified
in the notice, or (B) effect such exchange otherwise in compliance with the applicable procedures of the depositary for such Registrable Security, in each case, prior to the close of business on the last Exchange Date; and 

(v) that any Holder will be entitled to withdraw its election, not later than the close of business on the last Exchange Date, by
(A) sending to the institution and at the address specified in the notice, a telegram, telex, facsimile transmission or letter setting forth the name of such Holder, the principal amount of Registrable Securities delivered for exchange and a
statement that such Holder is withdrawing its election to have such Securities exchanged or (B) effecting such withdrawal in compliance with the applicable procedures of the depositary for the Registrable Securities. 

  
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 As a condition to participating in the Exchange Offer, a Holder will be required to represent to
the Issuers and the Guarantors that (i) any Exchange Securities to be received by it will be acquired in the ordinary course of its business, (ii) such Holder has no arrangement or understanding with any Person to participate in the
distribution (within the meaning of the Securities Act) of the Exchange Securities in violation of the provisions of the Securities Act, (iii) such Holder is not an “affiliate” (within the meaning of Rule 405 under the Securities Act)
of the Issuers or any Guarantor and (iv) if such Holder is a broker-dealer that will receive Exchange Securities for its own account in exchange for Registrable Securities that were acquired as a result of market-making or other trading
activities, then such Holder will deliver a Prospectus (or, to the extent permitted by law, make available a Prospectus to purchasers) in connection with any resale of such Exchange Securities. 

As soon as practicable after the last Exchange Date, the Issuers and the Guarantors shall: 

(i) accept for exchange Registrable Securities or portions thereof validly tendered and not properly withdrawn pursuant to the Exchange Offer;
and 
 (ii) deliver, or cause to be delivered, to the Trustee for cancellation all Registrable Securities or portions thereof so accepted
for exchange by the Issuers and issue, and cause the Trustee to promptly authenticate and deliver to each Holder, Exchange Securities equal in principal amount to the principal amount of the Registrable Securities tendered by such Holder. 

The Issuers and the Guarantors shall use their commercially reasonable best efforts to complete the Exchange Offer as provided above and shall
comply with the applicable requirements of the Securities Act, the Exchange Act and other applicable laws and regulations in connection with the Exchange Offer. The Exchange Offer shall not be subject to any conditions, other than that the Exchange
Offer does not violate any applicable law or applicable interpretations of the staff of the SEC. 
 (b) In the event that (i) the
Issuers and the Guarantors determine that the Exchange Offer Registration provided for in Section 2(a) above is not available or may not be completed as soon as practicable after the last Exchange Date because it would violate any applicable
law or applicable interpretations of the staff of the SEC, (ii) the Exchange Offer is not for any other reason completed within 360 calendar days following the Closing Date, (iii) the Issuers receive a written request from any Initial
Purchaser in connection with the offer or sale of Registrable Securities that are ineligible to be exchanged in the Exchange Offer or (iv) in the case of any Holder that participates in the Exchange Offer, such Holder does not receive Exchange
Securities on the date of the exchange that may be sold without restriction under state and federal securities laws (other than due solely to the status of such Holder as an affiliate of either Issuer within the meaning of the Securities Act) and so
notifies (such notification or written request pursuant to the preceding clause (iii), a “Shelf Request”) the Issuers within 30 days after such Holder first becomes aware of such restrictions, the Issuers and the Guarantors shall
use their commercially reasonable best efforts to cause to be filed as soon as practicable after such determination date or Shelf Request, as the case may be, a Shelf Registration Statement providing for the sale of all the Registrable Securities by
the Holders thereof and to have such Shelf Registration Statement become effective. 

  
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 In the event that the Issuers and the Guarantors are required to file a Shelf Registration
Statement pursuant to clauses (iii) or (iv) of the preceding sentence, the Issuers and the Guarantors shall use their commercially reasonable best efforts to file and become effective both an Exchange Offer Registration Statement pursuant to
Section 2(a) with respect to all Registrable Securities and a Shelf Registration Statement (which may be a combined Registration Statement with the Exchange Offer Registration Statement) with respect to offers and sales of Registrable
Securities held by the Initial Purchasers or such Holder after completion of the Exchange Offer. 
 The Issuers and the Guarantors agree to
use their commercially reasonable best efforts (i) to file the Shelf Registration Statement as promptly as practicable but in any event by the 30th day after they become obligated to make the filing, (ii) to cause the registration
statement to become effective and (iii) to keep the Shelf Registration Statement continuously effective until the second anniversary of the Closing Date or such shorter period that will terminate when all the Registrable Securities covered by
the Shelf Registration Statement have been sold pursuant to the Shelf Registration Statement (the “Shelf Effectiveness Period”). The Issuers and the Guarantors further agree to supplement or amend the Shelf Registration Statement
and the related Prospectus if required by the rules, regulations or instructions applicable to the registration form used by the Issuers for such Shelf Registration Statement or by the Securities Act or by any other rules and regulations thereunder
or if reasonably requested by a Holder of Registrable Securities with respect to information relating to such Holder, and to use their commercially reasonable best efforts to cause any such amendment to become effective and such Shelf Registration
Statement and Prospectus to become usable as soon as thereafter practicable. The Issuers and the Guarantors agree to furnish to the Holders of Registrable Securities copies of any such supplement or amendment promptly after its being used or filed
with the SEC. 
 (c) The Issuers and the Guarantors shall pay all Registration Expenses in connection with any registration pursuant to
Section 2(a) or Section 2(b) hereof. Each Holder shall pay all underwriting discounts and commissions, brokerage commissions and transfer taxes, if any, relating to the sale or disposition of such Holder’s Registrable Securities
pursuant to the Shelf Registration Statement. 
 (d) An Exchange Offer Registration Statement pursuant to Section 2(a) hereof or a
Shelf Registration Statement pursuant to Section 2(b) hereof will not be deemed to have become effective unless it has been declared effective by the SEC. 

In the event that the Exchange Offer is not completed on or prior to December 23, 2017 (the “Target Registration Date”),
the interest rate on the Securities will be increased by (i) 0.25% per annum for the first 90 day period immediately following the Target Registration Date and (ii) an additional 0.25% per annum with respect to each subsequent 90 day period, in
each case until the Exchange Offer is completed up to a maximum increase of 1.00% per annum. In the event that the Partnership is obligated to file a Shelf Registration Statement pursuant to Section 2(b), and the Shelf Registration Statement
required to be filed thereby does not become effective prior to the 90th day after the obligation to file such Shelf Registration arises pursuant to Section 2(b) (such later date, the “Shelf Additional Interest Date”), then the
interest rate on the Securities will 

  
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be increased by (i) 0.25% per annum for the first 90 day period payable commencing from one day after the Shelf Additional Interest Date and (ii) an additional 0.25% per annum with respect
to each subsequent 90 day period, in each case until the Shelf Registration Statement becomes effective up to a maximum increase of 1.00% per annum. 

If the Shelf Registration Statement, if required hereby, has become effective and thereafter either ceases to be effective or the Prospectus
contained therein ceases to be usable, in each case whether or not permitted by this Agreement, at any time during the Shelf Effectiveness Period, and such failure to remain effective or usable exists for more than 30 days (whether or not
consecutive) in any 12-month period, then the interest rate on the Securities will be increased by (i) 0.25% per annum for the first 90 day period (whether or not consecutive) commencing on the 31st day in
such 12-month period and (ii) an additional 0.25% per annum with respect to each subsequent 90 day period and ending on such date that the Shelf Registration Statement has again become effective or the
Prospectus again becomes usable, up to a maximum of 1.00% per annum of additional interest. 
 (e) Any additional interest paid in
accordance with this Section 2 shall be liquidated damages and shall be the sole and exclusive remedy available to Holders due to a failure by the Issuers to comply with their obligations under Section 2(a) and Section 2(b). 

3. Registration Procedures. In connection with their obligations pursuant to Section 2(a) and Section 2(b) hereof, the
Issuers and the Guarantors shall as expeditiously as possible 
 (a) prepare and file with the SEC a Registration Statement on the
appropriate form under the Securities Act, which form (x) shall be selected by the Issuers and the Guarantors, (y) shall, in the case of a Shelf Registration, be available for the sale of the Registrable Securities by the Holders thereof
and (z) shall comply as to form in all material respects with the requirements of the applicable form and include all financial statements required by the SEC to be filed therewith; and use their commercially reasonable best efforts to cause
such Registration Statement to become effective and remain effective for the applicable period in accordance with Section 2 hereof; 

(b) prepare and file with the SEC such amendments and post-effective amendments to each Registration Statement as may be necessary to keep
such Registration Statement effective for the applicable period in accordance with Section 2 hereof and cause each Prospectus to be supplemented by any required prospectus supplement and, as so supplemented, to be filed pursuant to Rule 424
under the Securities Act; and keep each Prospectus current during the period described in Section 4(3) of and Rule 174 under the Securities Act that is applicable to transactions by brokers or dealers with respect to the Registrable Securities
or Exchange Securities; 
 (c) in the case of a Shelf Registration, furnish to each Holder of Registrable Securities, to counsel for the
Initial Purchasers, to counsel for such Holders and to each Underwriter of an Underwritten Offering of Registrable Securities, if any, without charge, as many copies of each Prospectus, including each preliminary prospectus, and any amendment or
supplement thereto, in order to facilitate the sale or other disposition of the Registrable Securities thereunder; and the Issuers consent to the use of such Prospectus and any amendment or 

  
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supplement thereto in accordance with applicable law by each of the Holders of Registrable Securities and any such Underwriters in connection with the offering and sale of the Registrable
Securities covered by and in the manner described in such Prospectus, preliminary prospectus or any amendment or supplement thereto in accordance with applicable law; 

(d) use their commercially reasonable best efforts to register or qualify the Registrable Securities under all applicable state securities or
blue sky laws of such jurisdictions as any Holder of Registrable Securities covered by a Registration Statement shall reasonably request in writing by the time the applicable Registration Statement is declared effective by the SEC; cooperate with
the Holders in connection with any filings required to be made with the Financial Industry Regulatory Authority; and do any and all other acts and things that may be reasonably necessary or advisable to enable each Holder to complete the disposition
in each such jurisdiction of the Registrable Securities owned by such Holder; provided that neither Issuer and none of the Guarantors shall be required to (i) qualify as a foreign corporation or other entity or as a dealer in securities in any
such jurisdiction where it would not otherwise be required to so qualify, (ii) file any general consent to service of process in any such jurisdiction or (iii) subject itself to taxation in any such jurisdiction if it is not so subject;

 (e) in the case of a Shelf Registration, notify each Holder of Registrable Securities, counsel for such Holders and counsel for the
Initial Purchasers promptly and, if requested by any such Holder or counsel, confirm such advice in writing (i) when a Registration Statement has become effective and when any post-effective amendment thereto has been filed and becomes
effective, (ii) of any request by the SEC or any state securities authority for amendments and supplements to a Registration Statement and Prospectus or for additional information after the Registration Statement has become effective,
(iii) of the issuance by the SEC or any state securities authority of any stop order suspending the effectiveness of a Registration Statement or the initiation of any proceedings for that purpose, including the receipt by the Issuers of any
notice of objection of the SEC to the use of a Shelf Registration Statement or any post-effective amendment thereto pursuant to Rule 401(g)(2) under the Securities Act, (iv) if, between the applicable effective date of a Shelf Registration
Statement and the closing of any sale of Registrable Securities covered thereby, the representations and warranties of any Issuer or Guarantor contained in the Purchase Agreement cease to be true and correct in all material respects or if any Issuer
or any Guarantor receives any notification with respect to the suspension of the qualification of the Registrable Securities for sale in any jurisdiction or the initiation of any proceeding for such purpose and (v) of the happening of any event
during the period a Shelf Registration Statement is effective that makes any statement made in such Registration Statement or the related Prospectus untrue in any material respect or that requires the making of any changes in such Registration
Statement or Prospectus in order to make the statements therein not misleading; 
 (f) use their commercially reasonable best efforts to
obtain the withdrawal of any order suspending the effectiveness of a Registration Statement or, in the case of a Shelf Registration, the resolution of any objection of the SEC pursuant to Rule 401(g)(2), including by filing an amendment to such
Shelf Registration Statement on the proper form, at the earliest possible moment; 

  
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 (g) in the case of a Shelf Registration, furnish to each Holder of Registrable Securities,
without charge, at least one conformed copy of each Registration Statement and any post-effective amendment thereto (without any documents incorporated therein by reference or exhibits thereto, unless requested); provided, however, that any such
document available on the SEC’s EDGAR database shall satisfy and such obligation; 
 (h) in the case of a Shelf Registration, cooperate
with the selling Holders of Registrable Securities to facilitate the timely preparation and delivery of certificates representing Registrable Securities to be sold and not bearing any restrictive legends and enable such Registrable Securities to be
issued in such denominations and registered in such names (consistent with the provisions of the Indenture) as the selling Holders may reasonably request at least one Business Day prior to the closing of any sale of Registrable Securities; 

(i) in the case of a Shelf Registration, upon the occurrence of any event contemplated by Section 3(e)(v) hereof, use their commercially
reasonable best efforts to prepare and file with the SEC a supplement or post-effective amendment to such Shelf Registration Statement or the related Prospectus or any document incorporated therein by reference or file any other required document so
that, as thereafter delivered (or, to the extent permitted by law, made available) to purchasers of the Registrable Securities, such Prospectus will not contain any untrue statement of a material fact or omit to state a material fact necessary to
make the statements therein, in the light of the circumstances under which they were made, not misleading; and the Issuers and the Guarantors shall notify the Holders of Registrable Securities to suspend use of the Prospectus as promptly as
practicable after the occurrence of such an event, and such Holders hereby agree to suspend use of the Prospectus until the Issuers and the Guarantors have amended or supplemented the Prospectus to correct such misstatement or omission; 

(j) a reasonable time prior to the filing of any Registration Statement, any Prospectus, any amendment to a Registration Statement or
amendment or supplement to a Prospectus or of any document that is to be incorporated by reference into a Registration Statement or a Prospectus after initial filing of a Registration Statement, provide copies of such document to the Initial
Purchasers and their counsel (and, in the case of a Shelf Registration Statement, to the Holders of Registrable Securities and their counsel) and make such of the representatives of the Issuers and the Guarantors as shall be reasonably requested by
the Initial Purchasers and their counsel (and, in the case of a Shelf Registration Statement, the Holders of Registrable Securities and their counsel) available for discussion of such document; and the Issuers and the Guarantors shall not, at any
time after initial filing of a Registration Statement, use or file any Prospectus, any amendment of or supplement to a Registration Statement or a Prospectus, or any document that is to be incorporated by reference into a Registration Statement or a
Prospectus, of which the Initial Purchasers and their counsel (and, in the case of a Shelf Registration Statement, the Holders of Registrable Securities and their counsel) shall not have previously been advised and furnished a copy or to which the
Initial Purchasers or their counsel (and, in the case of a Shelf Registration Statement, the Holders of Registrable Securities or their counsel) shall reasonably object; provided, that this clause shall not apply to any filing by the Partnership of
any Annual Report on Form 10-K, Quarterly Report on Form 10-Q or Current Report on Form 8-K with respect to matters unrelated to
the Securities and the offering or exchange therefor; 

  
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 (k) obtain a CUSIP number for all Exchange Securities or Registrable Securities, as the case may
be, not later than the effective date of a Registration Statement which shall be the same CUSIP number as the Existing Securities, unless it is not possible to obtain the same CUSIP number following the commercially reasonable best efforts of the
Partnership to do so; 
 (l) cause the Indenture to be qualified under the Trust Indenture Act in connection with the registration of the
Exchange Securities or Registrable Securities, as the case may be; cooperate with the Trustee and the Holders to effect such changes to the Indenture as may be required for the Indenture to be so qualified in accordance with the terms of the Trust
Indenture Act; and execute, and use their commercially reasonable best efforts to cause the Trustee to execute, all documents as may be required to effect such changes and all other forms and documents required to be filed with the SEC to enable the
Indenture to be so qualified in a timely manner; 
 (m) in the case of a Shelf Registration, make available for inspection by a
representative of the Holders of the Registrable Securities (an “Inspector”), any Underwriter participating in any disposition pursuant to such Shelf Registration Statement, and attorneys and accountants designated by the Holders,
at reasonable times and in a reasonable manner, all pertinent financial and other records, documents and properties of the Issuers and the Guarantors, and cause the respective officers, directors and employees of the Issuers and the Guarantors to
supply all information reasonably requested by any such Inspector, Underwriter, attorney or accountant in connection with a Shelf Registration Statement; provided that if any such information is identified by the Issuers as being confidential or
proprietary, each Person receiving such information shall take such actions as are reasonably necessary to protect the confidentiality of such information to the extent such action is otherwise not inconsistent with, an impairment of or in
derogation of the rights and interests of any Inspector, Holder or Underwriter; 
 (n) in the case of a Shelf Registration, use their
commercially reasonable best efforts to cause all Registrable Securities to be listed on any securities exchange or any automated quotation system on which similar securities issued or guaranteed by any Issuer or any Guarantor are then listed if
requested by the Majority Holders, to the extent such Registrable Securities satisfy applicable listing requirements; 
 (o) request that
each Holder of Securities to be sold pursuant to the Registration Statement to furnish the Issuers such information regarding the Holder and the distribution of the Securities as the Issuer may from time to time reasonably require for inclusion in
the Registration Statement, and the Issuers may exclude from such registration the Securities of any Holder that unreasonably fails to furnish such information within a reasonable time after receiving such request; and 

(p) in the case of a Shelf Registration, enter into such customary agreements and take all such other actions in connection therewith
(including those requested by the Holders of a majority in principal amount of the Registrable Securities being sold) in order to expedite or facilitate the disposition of such Registrable Securities including, but not limited to, an Underwritten
Offering and in such connection, (i) to the extent possible, make such representations and warranties to the Holders and any Underwriters of such Registrable 

  
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Securities with respect to the business of the Partnership and its subsidiaries, the Registration Statement, Prospectus and documents incorporated by reference or deemed incorporated by
reference, if any, in each case, in form, substance and scope as are customarily made by issuers to underwriters in underwritten offerings and confirm the same if and when requested, (ii) obtain opinions of counsel to the Issuers (which counsel
and opinions, in form, scope and substance, shall be reasonably satisfactory to the Holders and such Underwriters and their respective counsel) addressed to each selling Holder (to the extent such Holder has advised the Issuers that such Holder may
have a “due diligence” defense under Section 11 of the Securities Act) and Underwriter of Registrable Securities, covering the matters customarily covered in opinions requested in underwritten offerings, (iii) obtain
“comfort” letters from the independent certified public accountants of the Issuers (and, if necessary, any other certified public accountant of any subsidiary of the Issuers or any Guarantor, or of any business acquired by the Issuers or
any Guarantor for which financial statements and financial data are or are required to be included in the Registration Statement) addressed to each selling Holder (to the extent permitted by applicable professional standards) and Underwriter of
Registrable Securities, such letters to be in customary form and covering matters of the type customarily covered in “comfort” letters in connection with underwritten offerings and (iv) deliver such documents and certificates as may
be reasonably requested by the Holders of a majority in principal amount of the Registrable Securities being sold or the Underwriters, and which are customarily delivered in underwritten offerings, to evidence the continued validity of the
representations and warranties of the Issuers made pursuant to clause (i) above and to evidence compliance with any customary conditions contained in an underwriting agreement. 

In the case of a Shelf Registration Statement, the Issuers may require each Holder of Registrable Securities to furnish to the Issuers such
information regarding such Holder and the proposed disposition by such Holder of such Registrable Securities as the Issuers may from time to time reasonably request in writing. 

In the case of a Shelf Registration Statement, each Holder of Registrable Securities covered in such Shelf Registration Statement agrees that,
upon receipt of any notice from the Issuers of the happening of any event of the kind described in Section 3(e)(v) hereof, such Holder will forthwith discontinue disposition of Registrable Securities pursuant to a Registration Statement until
such Holder’s receipt of the copies of the supplemented or amended Prospectus contemplated by Section 3(i) hereof and, if so directed by the Issuers, such Holder will deliver to the Issuers all copies in its possession, other than
permanent file copies then in such Holder’s possession, of the Prospectus covering such Registrable Securities that is current at the time of receipt of such notice. 

If the Issuers shall give any such notice to suspend the disposition of Registrable Securities pursuant to a Registration Statement, the
Issuers shall extend the period during which the Registration Statement shall be maintained effective pursuant to this Agreement by the number of days during the period from and including the date of the giving of such notice to and including the
date when the Holders shall have received copies of the supplemented or amended Prospectus necessary to resume such dispositions. The Issuers may give any such notice so long as there are no more than 90 days during any 365-day period in which such suspensions are in effect. 

  
 12 

 The Holders of Registrable Securities covered by a Shelf Registration Statement who desire to do
so may sell such Registrable Securities in an Underwritten Offering. In any such Underwritten Offering, the investment bank or investment banks and manager or managers (the “Underwriters”) that will administer the offering will be
selected by the Majority Holders of the Registrable Securities included in such offering; provided that such selections shall be subject to the approval of the Partnership, which approval shall not unreasonably be withheld. 

4. Participation of Broker-Dealers in Exchange Offer. (a) The staff of the SEC has taken the position that any broker-dealer that
receives Exchange Securities for its own account in the Exchange Offer in exchange for Securities that were acquired by such broker-dealer as a result of market-making or other trading activities (a “Participating Broker-Dealer”)
may be deemed to be an “underwriter” within the meaning of the Securities Act and must deliver a prospectus meeting the requirements of the Securities Act in connection with any resale of such Exchange Securities. 

The Issuers understand that it is the staff of the SEC’s position that if the Prospectus contained in the Exchange Offer Registration
Statement includes a plan of distribution containing a statement to the above effect and the means by which Participating Broker-Dealers may resell the Exchange Securities, without naming the Participating Broker-Dealers (or, to the extent permitted
by law, made available to purchasers) or specifying the amount of Exchange Securities owned by them, such Prospectus may be delivered by Participating Broker-Dealers to satisfy their prospectus delivery obligation under the Securities Act in
connection with resales of Exchange Securities for their own accounts, so long as the Prospectus otherwise meets the requirements of the Securities Act. 

(b) In light of the above, and notwithstanding the other provisions of this Agreement, the Issuers agree to use their commercially reasonable
best efforts to amend or supplement the Prospectus contained in the Exchange Offer Registration Statement, as would otherwise be contemplated by Section 3(i), for a period of up to 180 days after the last Exchange Date (as such period may be
extended pursuant to the penultimate paragraph of Section 3 of this Agreement), if requested by the Initial Purchasers or by one or more Participating Broker-Dealers, in order to expedite or facilitate the disposition of any Exchange Securities
by Participating Broker-Dealers consistent with the positions of the staff of the SEC recited in Section 4(a) above. The Issuers further agree that Participating Broker-Dealers shall be authorized to deliver such Prospectus (or, to the extent
permitted by law, make available) during such period in connection with the resales contemplated by this Section 4. 
 (c) The Initial
Purchasers shall have no liability to any Issuer, any Guarantor or any Holder with respect to any request that they may make pursuant to Section 4(b) above. 

5. Indemnification and Contribution. (a) Each Issuer and each Guarantor, jointly and severally, agrees to indemnify and hold
harmless the Initial Purchasers and each Holder, their respective affiliates, directors and officers and each Person, if any, who controls an Initial Purchasers or any Holder within the meaning of Section 15 of the Securities Act or
Section 20 of the Exchange Act, from and against any and all losses, claims, damages and liabilities (including, without limitation, legal fees and other expenses incurred in connection with any suit, action or proceeding or any claim asserted,
as such fees and expenses are incurred), joint or several, that 

  
 13 

 
arise out of, or are based upon, (1) any untrue statement or alleged untrue statement of a material fact contained in any Registration Statement or any Prospectus or any omission or alleged
omission to state therein a material fact required to be stated therein or necessary in order to make the statements made therein, in the light of the circumstances under which they were made, not misleading, or (2) any untrue statement or
alleged untrue statement of a material fact contained in any Prospectus, any Free Writing Prospectus used in violation of this Agreement or any “issuer information” (“Issuer Information”) filed or required to be filed
pursuant to Rule 433(d) under the Securities Act, or any omission or alleged omission to state therein a material fact necessary in order to make the statements made therein, in the light of the circumstances under which they were made, not
misleading, in each case, except insofar as such losses, claims, damages or liabilities arise out of, or are based upon, any untrue statement or omission or alleged untrue statement or omission made in reliance upon and in conformity with any
information relating to the Initial Purchasers or any Holder furnished to the Issuers in writing by the Initial Purchasers through Wells Fargo Securities, LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated or any selling Holder
expressly for use therein. 
 (b) Each Holder agrees, severally and not jointly, to indemnify and hold harmless the Issuers, the Guarantors,
the Initial Purchasers and the other selling Holders, their respective affiliates, the directors of the Issuers, each officer of the Issuers who signed the Registration Statement and each Person, if any, who controls the Issuers, the Guarantors, the
Initial Purchasers and any other selling Holder within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act to the same extent as the indemnity set forth in paragraph (a) above, but only with respect to
any losses, claims, damages or liabilities that arise out of, or are based upon, any untrue statement or omission or alleged untrue statement or omission made in reliance upon and in conformity with any information relating to such Holder furnished
to the Issuers in writing by or on behalf of such Holder expressly for use in any Registration Statement and any Prospectus. 
 (c) If any
suit, action, proceeding (including any governmental or regulatory investigation), claim or demand shall be brought or asserted against any Person in respect of which indemnification may be sought pursuant to either paragraph (a) or (b) above,
such Person (the “Indemnified Person”) shall promptly notify the Person against whom such indemnification may be sought (the “Indemnifying Person”) in writing; provided that the failure to notify the Indemnifying
Person shall not relieve it from any liability that it may have under this Section 5 except to the extent that it has been materially prejudiced (through the forfeiture of substantive rights or defenses) by such failure; and provided, further,
that the failure to notify the Indemnifying Person shall not relieve it from any liability that it may have to an Indemnified Person otherwise than under this Section 5. If any such proceeding shall be brought or asserted against an Indemnified
Person and it shall have notified the Indemnifying Person thereof, the Indemnifying Person shall retain counsel reasonably satisfactory to the Indemnified Person to represent the Indemnified Person and any others entitled to indemnification pursuant
to this Section 5 that the Indemnifying Person may designate in such proceeding and shall pay the fees and expenses of such counsel related to such proceeding, as incurred. In any such proceeding, any Indemnified Person shall have the right to
retain its own counsel, but the fees and expenses of such counsel shall be at the expense of such Indemnified Person unless (i) the Indemnifying Person and the Indemnified Person shall have mutually agreed to the contrary; (ii) the
Indemnifying Person has failed within a reasonable time to retain counsel reasonably satisfactory 

  
 14 

 
to the Indemnified Person; (iii) the Indemnified Person shall have reasonably concluded that there may be legal defenses available to it that are different from or in addition to those
available to the Indemnifying Person; or (iv) the named parties in any such proceeding (including any impleaded parties) include both the Indemnifying Person and the Indemnified Person and representation of both parties by the same counsel
would be inappropriate due to actual or potential differing interests between them. It is understood and agreed that the Indemnifying Person shall not, in connection with any proceeding or related proceeding in the same jurisdiction, be liable for
the fees and expenses of more than one separate firm (in addition to any local counsel) for all Indemnified Persons, and that all such fees and expenses shall be reimbursed as they are incurred. Any such separate firm (x) for the Initial
Purchasers, their affiliates, directors and officers and any control Persons of an Initial Purchaser shall be designated in writing by the Initial Purchasers, (y) for any Holder, its affiliates, directors and officers and any control Persons of
such Holder shall be designated in writing by the Majority Holders and (z) in all other cases shall be designated in writing by the Issuers. The Indemnifying Person shall not be liable for any settlement of any proceeding effected without its
written consent, but if settled with such consent or if there be a final judgment for the plaintiff, the Indemnifying Person agrees to indemnify each Indemnified Person from and against any loss or liability by reason of such settlement or judgment.
Notwithstanding the foregoing sentence, if at any time an Indemnified Person shall have requested that an Indemnifying Person reimburse the Indemnified Person for fees and expenses of counsel as contemplated by this paragraph, the Indemnifying
Person shall be liable for any settlement of any proceeding effected without its written consent if (i) such settlement is entered into more than 30 days after receipt by the Indemnifying Person of such request and (ii) the Indemnifying
Person shall not have reimbursed the Indemnified Person in accordance with such request prior to the date of such settlement. No Indemnifying Person shall, without the written consent of the Indemnified Person, effect any settlement of any pending
or threatened proceeding in respect of which any Indemnified Person is or could have been a party and indemnification could have been sought hereunder by such Indemnified Person, unless such settlement (A) includes an unconditional release of
such Indemnified Person, in form and substance reasonably satisfactory to such Indemnified Person, from all liability on claims that are the subject matter of such proceeding and (B) does not include any statement as to or any admission of
fault, culpability or a failure to act by or on behalf of any Indemnified Person. 
 (d) If the indemnification provided for in paragraphs
(a) and (b) above is unavailable to an Indemnified Person or insufficient in respect of any losses, claims, damages or liabilities referred to therein, then each Indemnifying Person under such paragraph, in lieu of indemnifying such Indemnified
Person thereunder, shall contribute to the amount paid or payable by such Indemnified Person as a result of such losses, claims, damages or liabilities (i) in such proportion as is appropriate to reflect the relative benefits received by the
Issuers and the Guarantors from the offering of the Securities and the Exchange Securities, on the one hand, and by the Holders from receiving Securities or Exchange Securities registered under the Securities Act, on the other hand, or (ii) if
the allocation provided by clause (i) is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) but also the relative fault of the Issuers and the
Guarantors on the one hand and the Holders on the other in connection with the statements or omissions that resulted in such losses, claims, damages or liabilities, as well as any other relevant equitable considerations. The relative fault of the
Issuers and the Guarantors on the one hand and the Holders on the other shall be determined 

  
 15 

 
by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied
by the Issuers and the Guarantors or by the Holders and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. 

(e) The Issuers, the Guarantors and the Holders agree that it would not be just and equitable if contribution pursuant to this Section 5
were determined by pro rata allocation (even if the Holders were treated as one entity for such purpose) or by any other method of allocation that does not take account of the equitable considerations referred to in paragraph (d) above. The
amount paid or payable by an Indemnified Person as a result of the losses, claims, damages and liabilities referred to in paragraph (d) above shall be deemed to include, subject to the limitations set forth above, any legal or other expenses
incurred by such Indemnified Person in connection with any such action or claim. Notwithstanding the provisions of this Section 5, in no event shall a Holder be required to contribute any amount in excess of the amount by which the total price
at which the Securities or Exchange Securities sold by such Holder exceeds the amount of any damages that such Holder has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No Person
guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from any Person who was not guilty of such fraudulent misrepresentation. The Holders’ obligations to
contribute pursuant to this Section 5 are several and not joint. 
 (f) The remedies provided for in this Section 5 are not
exclusive and shall not limit any rights or remedies that may otherwise be available to any Indemnified Person at law or in equity. 
 (g)
The indemnity and contribution provisions contained in this Section 5 shall remain operative and in full force and effect regardless of (i) any termination of this Agreement, (ii) any investigation made by or on behalf of the Initial
Purchasers or any Holder, their respective affiliates or any Person controlling any Initial Purchaser or any Holder, or by or on behalf of the Issuers, their respective affiliates or the officers or directors of or any Person controlling the
Issuers, (iii) acceptance of any of the Exchange Securities and (iv) any sale of Registrable Securities pursuant to a Shelf Registration Statement. 

6. General. 
 (a) No
Inconsistent Agreements. The Issuers and the Guarantors have not as of the date hereof entered into, nor shall it on or after the date of this Agreement enter into, any agreement with respect to its securities that is inconsistent with the
rights granted to the Holders of Registrable Securities in this Agreement or otherwise conflicts with the provisions hereof. 
 (b)
Amendments and Waivers. The provisions of this Agreement, including the provisions of this sentence, may not be amended, modified or supplemented, and waivers or consents to departures from the provisions hereof may not be given unless the
Issuers have obtained the written consent of Holders of at least a majority in aggregate principal amount of the outstanding Registrable Securities affected by such amendment, modification, supplement, waiver or consent; provided that no amendment,
modification, supplement, waiver or consent to any departure from the provisions of Section 5 hereof shall be effective as against any Holder of 

  
 16 

 
Registrable Securities unless consented to in writing by such Holder. Any amendments, modifications, supplements, waivers or consents pursuant to this Section 6(b) shall be by a writing
executed by each of the parties hereto. 
 (c) Notices. All notices and other communications provided for or permitted hereunder
shall be made in writing by hand-delivery, registered first-class mail, facsimile, or any courier guaranteeing overnight delivery (i) if to a Holder, at the most current address given by such Holder to the Issuers by means of a notice given in
accordance with the provisions of this Section 6(c), which address initially is, with respect to the Initial Purchaser, the address set forth in the Purchase Agreement; (ii) if to the Issuers, initially at the Issuers’ address set
forth in the Purchase Agreement and thereafter at such other address, notice of which is given in accordance with the provisions of this Section 6(c); and (iii) to such other persons at their respective addresses as provided in the
Purchase Agreement and thereafter at such other address, notice of which is given in accordance with the provisions of this Section 6(c). All such notices and communications shall be deemed to have been duly given at the time delivered by hand,
if personally delivered; five Business Days after being deposited in the mail, postage prepaid, if mailed; when receipt is acknowledged, if delivered by facsimile; and on the next Business Day if timely delivered to an air courier guaranteeing
overnight delivery. Copies of all such notices, demands or other communications shall be concurrently delivered by the Person giving the same to the Trustee, at the address specified in the Indenture. 

(d) Successors and Assigns. This Agreement shall inure to the benefit of and be binding upon the successors, assigns and transferees of
each of the parties, including, without limitation and without the need for an express assignment, subsequent Holders; provided that nothing herein shall be deemed to permit any assignment, transfer or other disposition of Registrable Securities in
violation of the terms of the Purchase Agreement or the Indenture. If any transferee of any Holder shall acquire Registrable Securities in any manner, whether by operation of law or otherwise, such Registrable Securities shall be held subject to all
the terms of this Agreement, and by taking and holding such Registrable Securities such Person shall be conclusively deemed to have agreed to be bound by and to perform all of the terms and provisions of this Agreement and such Person shall be
entitled to receive the benefits hereof. The Initial Purchasers (in their capacity as the Initial Purchasers) shall have no liability or obligation to the Issuers or the Guarantors with respect to any failure by a Holder to comply with, or any
breach by any Holder of, any of the obligations of such Holder under this Agreement. 
 (e) Third Party Beneficiaries. Each Holder
shall be a third party beneficiary to the agreements made hereunder between the Issuers, on the one hand, and the Initial Purchasers, on the other hand, and shall have the right to enforce such agreements directly to the extent it deems such
enforcement necessary or advisable to protect its rights or the rights of other Holders hereunder. 
 (f) Counterparts. This
Agreement may be executed in any number of counterparts and by the parties hereto in separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute one and the same agreement.

  
 17 

 (g) Headings. The headings in this Agreement are for convenience of reference only, are
not a part of this Agreement and shall not limit or otherwise affect the meaning hereof. 
 (h) Governing Law. This Agreement and any
claim, controversy or dispute arising under or related to this Agreement shall be governed by and construed in accordance with the laws of the State of New York. 

(i) Miscellaneous. This Agreement contains the entire agreement between the parties relating to the subject matter hereof and
supersedes all oral statements and prior writings with respect thereto. If any term, provision, covenant or restriction contained in this Agreement is held by a court of competent jurisdiction to be invalid, void or unenforceable or against public
policy, the remainder of the terms, provisions, covenants and restrictions contained herein shall remain in full force and effect and shall in no way be affected, impaired or invalidated. The Issuers and the Initial Purchasers shall endeavor in good
faith negotiations to replace the invalid, void or unenforceable provisions with valid provisions the economic effect of which comes as close as possible to that of the invalid, void or unenforceable provisions. 

[Remainder of This Page is Intentionally Left Blank] 

  
 18 

 IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first written above.

  

			
	Very truly yours,
	
	AMERICAN MIDSTREAM PARTNERS, LP
		
	By:	 	AMERICAN MIDSTREAM GP, LLC,
		 	its general partner
		
	By:	 	 /s/ Eric T. Kalamaras

			
	Name:	 	 Eric T. Kalamaras

	Title:	 	 Senior Vice President and Chief Financial
Officer

 
			
	
	AMERICAN MIDSTREAM FINANCE CORPORATION
		
	By:	 	 /s/ Eric T. Kalamaras

			
	Name:	 	 Eric T. Kalamaras

	Title:	 	 Senior Vice President and Chief Financial
Officer

  

	
	GUARANTORS
	
	American Midstream, LLC
	American Midstream (Alabama Gathering), LLC
	American Midstream (Alabama Intrastate), LLC
	American Midstream (AlaTenn), LLC
	American Midstream (Burns Point), LLC
	American Midstream (Lavaca), LLC
	American Midstream (Louisiana Intrastate), LLC
	American Midstream (Mississippi), LLC
	American Midstream (SIGCO Intrastate), LLC
	American Midstream (Tennessee River), LLC
	American Midstream AMPAN, LLC
	American Midstream Bakken, LLC
	American Midstream Chatom, LLC
	American Midstream Chatom Unit 1, LLC
	American Midstream Chatom Unit 2, LLC

  
 Signature Page to
Registration Rights Agreement 

	
	American Midstream Costar, LLC
	American Midstream Delta House, LLC
	American Midstream East Texas Rail, LLC
	American Midstream Emerald, LLC
	American Midstream Gas Solutions, LP
	 By:   American Midstream Gas Solutions GP, LLC, its general
partner

	American Midstream Gas Solutions GP, LLC
	American Midstream Gas Solutions LP, LLC
	American Midstream Madison, LLC
	American Midstream Marketing, LLC
	American Midstream Mesquite, LLC
	 American Midstream Midla
 Reconfiguration,
LLC

	American Midstream Offshore (Seacrest), LP
	 By:   American Midstream, LLC, its general partner

	American Midstream Onshore Pipelines, LLC
	American Midstream Permian, LLC
	American Midstream Piney Woods, LLC
	American Midstream Republic, LLC
	American Midstream Transtar Gas Processing, LLC
	AMID Caddo, LLC
	AMID Crude Oil Services LLC
	AMID Crude Oil Storage LLC
	AMID Crude Trucking LLC
	AMID Energy Products Supply LLC
	AMID Liquids Trucking LLC
	AMID Merger LP
	 By:   American Midstream, LLC, its general partner

	AMID NLR LLC
	AMID Payment Services LLC
	AMID Refined Products LLC
	AMID Silver Dollar Pipeline LLC
	AMID St. Croix LLC
	Argo Merger GP Sub, LLC
	Centana Gathering, LLC
	Centana Oil Gathering, LLC
	D-Day Offshore Holdings, LLC
	High Point Gas Gathering, L.L.C.
	High Point Gas Gathering Holdings, LLC
	High Point Gas Transmission, LLC
	High Point Gas Transmission Holdings, LLC
	American Midstream Blackwater, LLC
	American Midstream Terminaling, LLC

  
 Signature Page to
Registration Rights Agreement 

	
	Blackwater Georgia, L.L.C.
	Blackwater Harvey, LLC
	Blackwater Investments, Inc.
	Blackwater Maryland, L.L.C.
	Blackwater Midstream Corp.
	Blackwater New Orleans, L.L.C.

  

			
	By:	 	 /s/ Eric T. Kalamaras

	 	 	Eric T. Kalamaras
	 	 	Senior Vice President and Chief
Financial Officer

  
 Signature Page to
Registration Rights Agreement 

 Confirmed and accepted as of the date first above written: 

 

			
	WELLS FARGO SECURITIES, LLC
	
	 on behalf of the several Initial Purchasers named

on Exhibit A to the Purchase Agreement

	
	By: WELLS FARGO SECURITIES, LLC
		
	By:	 	 /s/ Jeff Gore

			
	Name:	 	Jeff Gore
	Title:	 	Managing Director

  
 Signature Page to
Registration Rights Agreement 

 SCHEDULE I 

GUARANTORS 
 American Midstream, LLC 

American Midstream Marketing, LLC 
 American Midstream (Alabama
Gathering), LLC 
 American Midstream (Alabama Intrastate), LLC 

American Midstream (Alatenn), LLC 
 American Midstream (Louisiana
Intrastate), LLC 
 American Midstream (Mississippi), LLC 

American Midstream (Sigco Intrastate), LLC 
 American Midstream
(Tennessee River), LLC 
 American Midstream Onshore Pipelines, LLC 

American Midstream Offshore (Seacrest), LP 
 American Midstream
(Burns Point), LLC 
 American Midstream Chatom, LLC 
 American
Midstream Chatom Unit 1, LLC 
 American Midstream Chatom Unit 2, LLC 

American Midstream Madison, LLC 
 High Point Gas Transmission
Holdings, LLC 
 High Point Gas Transmission, LLC 
 High Point
Gas Gathering Holdings, LLC 
 High Point Gas Gathering, L.L.C. 

American Midstream (Lavaca), LLC 
 Centana Gathering, LLC 

Centana Oil Gathering, LLC 
 American Midstream Republic, LLC 

American Midstream Costar, LLC 
 American Midstream Gas Solutions,
LP 
 American Midstream Gas Solutions GP, LLC 
 American
Midstream Gas Solutions LP, LLC 
 American Midstream Bakken, LLC 

American Midstream Permian, LLC 
 American Midstream East Texas
Rail, LLC 
 American Midstream Delta House, LLC 
 American
Midstream Mesquite, LLC 
 American Midstream Transtar Gas Processing, LLC 

American Midstream AMPAN, LLC 
 American Midstream Emerald, LLC

 American Midstream Piney Woods, LLC 
 American Midstream
Midla Reconfiguration, LLC 
 D-Day Offshore Holdings, LLC 

American Midstream Terminaling, LLC 
 Blackwater Investments, Inc.

 American Midstream Blackwater, LLC 

 Blackwater Midstream Corp. 

Blackwater Georgia, L.L.C. 
 Blackwater Harvey, LLC 

Blackwater Maryland, L.L.C. 
 Blackwater New Orleans, L.L.C. 

ARGO Merger GP Sub, LLC 
 AMID Merger LP 

AMID Crude Oil Services LLC 
 AMID Payment Services LLC 

AMID Refined Products LLC 
 AMID Liquids Trucking LLC 

AMID Energy Products Supply LLC 
 AMID Crude Trucking LLC 

AMID Crude Oil Storage LLC 
 AMID Silver Dollar Pipeline LLC 

AMID NLR LLC 
 AMID Caddo, LLC 

AMID St. Croix LLCEX-4.2

 Exhibit 4.2 
  

 
  

AMERICAN MIDSTREAM PARTNERS, LP 

AMERICAN MIDSTREAM FINANCE CORPORATION 

and 
 the Guarantors named herein

  
  

8.500% SENIOR NOTES DUE 2021 
  

 
 THIRD
SUPPLEMENTAL INDENTURE 
 DATED AS OF DECEMBER 19, 2017 

 
  

WELLS FARGO BANK, NATIONAL ASSOCIATION, 

Trustee 
  

 
  

 

 This THIRD SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), dated as of
December 19, 2017, is among American Midstream Partners, LP, a Delaware limited partnership (the “Company”), American Midstream Finance Corporation, a Delaware corporation (“Finance Corp.” and, together with the Company, the
“Issuers”), each of the parties identified under the caption “Guarantors” on the signature page hereto (the “Guarantors”) and Wells Fargo Bank, National Association, a national banking association, as Trustee.
Capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture (as defined below). 
 RECITALS

 WHEREAS, the Issuers, the initial Guarantors and the Trustee entered into an Indenture, dated as of December 28, 2016 (as amended,
restated, supplemented, waived or otherwise modified from time to time, the “Indenture”), pursuant to which the Company has issued $300,000,000 in the aggregate principal amount of 8.500% Senior Notes due 2021 (the “Notes”); 

WHEREAS, Section 9.01(g) of the Indenture provides that the Issuers, the existing Guarantors and the Trustee may amend or supplement the
Indenture, without the consent of the Holders of the Notes, in order to comply with Section 4.13 or otherwise add guarantees of the Notes; and 

WHEREAS, all acts and things prescribed by the Indenture, by law and by the Certificate of Incorporation and the Bylaws (or comparable
constituent documents) of the Issuers, of the Guarantors and of the Trustee necessary to make this Supplemental Indenture a valid instrument legally binding on the Issuers, the Guarantors and the Trustee, in accordance with its terms, have been duly
done and performed; 
 NOW, THEREFORE, to comply with the provisions of the Indenture and in consideration of the above premises, the
Issuers, the Guarantors and the Trustee covenant and agree for the equal and proportionate benefit of the respective Holders of the Notes as follows: 

ARTICLE 1 
 Section 1.01.
This Supplemental Indenture is supplemental to the Indenture and does and shall be deemed to form a part of, and shall be construed in connection with and as part of, the Indenture for any and all purposes. 

Section 1.02. This Supplemental Indenture shall become effective immediately upon its execution and delivery by each of the Issuers, the
Guarantors and the Trustee. 
 ARTICLE 2 

Section 2.01. From this date, by executing this Supplemental Indenture, (i) American Panther, LLC, (ii) Main Pass Oil Gathering
Company, LLC, (iii) PAM Acquisition Company, LLC, (iv) Panther Offshore Gathering Systems, LLC, (v) Panther Operating Company, LLC and (vi) Panther Pipeline, LLC, whose signatures appear below are subject to the provisions of the
Indenture to the extent provided for in Article 10 thereunder. 
 ARTICLE 3 

Section 3.01. Except as specifically modified herein, the Indenture and the Notes are in all respects ratified and
confirmed (mutatis mutandis) and shall remain in full force and effect in accordance with their terms with all capitalized terms used herein without definition having the same respective meanings ascribed to them as in the
Indenture. 
 Section 3.02. Except as otherwise expressly provided herein, no duties, responsibilities or liabilities are assumed, or
shall be construed to be assumed, by the Trustee by reason of this Supplemental Indenture. This 

  
 1 

 
Supplemental Indenture is executed and accepted by the Trustee subject to all the terms and conditions set forth in the Indenture with the same force and effect as if those terms and conditions
were repeated at length herein and made applicable to the Trustee with respect hereto. 
 Section 3.03. THIS SUPPLEMENTAL INDENTURE
SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK. 
 Section 3.04. The parties may sign any
number of copies of this Supplemental Indenture. Each signed copy shall be an original, but all of such executed copies together shall represent the same agreement. Signatures of the parties hereto transmitted by facsimile or .pdf shall be deemed to
be their original signatures for all purposes. 
 [NEXT PAGE IS SIGNATURE PAGE] 

  
 2 

 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly
executed, all as of the date first written above. 
  

			
	AMERICAN MIDSTREAM PARTNERS, LP
		
	By:	 	American Midstream GP, LLC, its sole general partner
		
	By:	 	 /s/ Eric T. Kalamaras

	Name:	 	Eric T. Kalamaras
	Title:	 	Senior Vice President and Chief Financial Officer
	
	AMERICAN MIDSTREAM FINANCE CORPORATION
		
	By:	 	 /s/ Eric T. Kalamaras

	Name:	 	Eric T. Kalamaras
	Title:	 	Senior Vice President and Chief Financial Officer
	
	 Guarantors:

	
	 American Midstream, LLC

	 American Midstream (Alabama Gathering), LLC

	 American Midstream (Alabama Intrastate), LLC

	 American Midstream (AlaTenn), LLC

	 American Midstream (Burns Point), LLC

	 American Midstream (Lavaca), LLC

	 American Midstream (Louisiana Intrastate), LLC

	 American Midstream (Mississippi), LLC

	 American Midstream (SIGCO Intrastate), LLC

	 American Midstream (Tennessee River), LLC

	 American Midstream AMPAN, LLC

	 American Midstream Bakken, LLC

	 American Midstream Chatom, LLC

	 American Midstream Chatom Unit 1, LLC

	 American Midstream Chatom Unit 2, LLC

	 American Midstream Costar, LLC

	 American Midstream Delta House, LLC

	 American Midstream East Texas Rail, LLC

	 American Midstream Emerald, LLC

	 American Midstream Gas Solutions, LP

	 By: American Midstream Gas Solutions GP, LLC, its general partner

	 American Midstream Gas Solutions GP, LLC

	 American Midstream Gas Solutions LP, LLC

	 American Midstream Madison, LLC

	 American Midstream Marketing,
LLC

  

Signature Page to Third Supplemental Indenture 

			
	 American Midstream Mesquite, LLC

	 American Midstream Midla Reconfiguration, LLC

	 American Midstream Offshore (Seacrest) LP

	 By: American Midstream, LLC, its general partner

	 American Midstream Onshore Pipelines, LLC

	 American Midstream Permian, LLC

	 American Midstream Piney Woods, LLC

	 American Midstream Republic, LLC

	 American Midstream Transtar Gas Processing, LLC

	 AMID Caddo LLC

	 AMID Crude Oil Services LLC

	 AMID Crude Oil Storage LLC

	 AMID Crude Trucking LLC

	 AMID Energy Products Supply LLC

	 AMID Liquids Trucking LLC

	 AMID Merger LP

	 By: American Midstream, LLC, its general partner

	 AMID NLR LLC

	 AMID Payment Services, LLC

	 AMID Refined Products LLC

	 AMID Silver Dollar Pipeline LLC

	 AMID St. Croix LLC

	 Argo Merger GP Sub, LLC

	 Centana Gathering, LLC

	 Centana Oil Gathering, LLC

	 D-Day Offshore Holdings, LLC

	 High Point Gas Gathering, L.L.C.

	 High Point Gas Gathering Holdings, LLC

	 High Point Gas Transmission, LLC

	 High Point Gas Transmission Holdings, LLC

	 PAM Acquisition Company, LLC

	 Panther Offshore Gathering Systems, LLC

	 Panther Operating Company, LLC

	 Panther Pipeline, LLC

	 American Panther, LLC

	 Main Pass Oil Gathering Company, LLC

	 American Midstream Blackwater, LLC

	 American Midstream Terminaling, LLC

	 Blackwater Georgia, L.L.C.

	 Blackwater Harvey, LLC

	 Blackwater Investments, Inc.

	 Blackwater Maryland, L.L.C.

	 Blackwater Midstream Corp.

	 Blackwater New Orleans, L.L.C.

		
	By:	 	 /s/ Eric T. Kalamaras

	Name:	 	Eric T. Kalamaras
	Title:	 	Senior Vice President and Chief Financial Officer

  
  

Signature Page to Third Supplemental Indenture 

			
	WELLS FARGO BANK, NATIONAL ASSOCIATION, as Trustee
		
	By:	 	 /s/ John C. Stohlmann

	Name:	 	John C. Stohlmann
	Title:	 	Vice President

  
 Signature Page to Third
Supplemental Indenture

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00277-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00277-of-00352.parquet"}]]