UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

FORM 10-Q

 

(Mark One)

 

 

For the quarterly period ended September 30, 2017

 

OR

 

 

For the transition period from                    to                   

 

Commission file number: 001-36719

 

ANTERO MIDSTREAM PARTNERS LP

(Exact name of registrant as specified in its charter)

 

 

(303) 357-7310

(Registrant’s telephone number, including area code)

 

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  ☒ Yes  ☐ No

 

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).  ☒ Yes  ☐ No

 

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or emerging growth company.  See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

 

 

If an emerging growth company, indicate by check mark if the registrant has elected to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

 

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act)  ☐ Yes  ☒ No

 

As of October 26, 2017, there were 186,628,240 common units outstanding.

 

 

TABLE OF CONTENTS

 

 

 

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

Some of the information in this report may contain forward-looking statements. Forward-looking statements give our current expectations, contain projections of results of operations or of financial condition, or forecasts of future events. Words such as “may,” “assume,” “forecast,” “position,” “predict,” “strategy,” “expect,” “intend,” “plan,” “estimate,” “anticipate,” “believe,” “project,” “budget,” “potential,” or “continue,” and similar expressions are used to identify forward-looking statements. They can be affected by assumptions used or by known or unknown risks or uncertainties. Consequently, no forward-looking statements can be guaranteed. When considering these forward-looking statements, you should keep in mind the risk factors and other cautionary statements in this report. Actual results may vary materially. You are cautioned not to place undue reliance on any forward-looking statements. You should also understand that it is not possible to predict or identify all such factors and should not consider the following list to be a complete statement of all potential risks and uncertainties. Factors that could cause our actual results to differ materially from the results contemplated by such forward-looking statements include:

We caution you that these forward-looking statements are subject to all of the risks and uncertainties, most of which are difficult to predict and many of which are beyond our control, incidental to our business. These risks include, but are not limited to, commodity price volatility, inflation, environmental risks, drilling and completion and other operating risks, regulatory changes, the uncertainty inherent in projecting future rates of production, cash flow and access to capital, the timing of development expenditures, and the other risks described under the heading “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2016 (the “2016 Form 10-K”) on file with the Securities and Exchange Commission (“SEC”) and in “Item 1A. Risk Factors” of our Quarterly Reports on Form 10-Q for the quarters ended March 31, 2017 and June 30, 2017.

Should one or more of the risks or uncertainties described in this report occur, or should underlying assumptions prove incorrect, our actual results and plans could differ materially from those expressed in any forward-looking statements.

All forward-looking statements, expressed or implied, included in this report are expressly qualified in their entirety by this cautionary statement. This cautionary statement should also be considered in connection with any subsequent written or oral forward-looking statements that we or persons acting on our behalf may issue.

Except as otherwise required by applicable law, we disclaim any duty to update any forward-looking statements, all of which are expressly qualified by the statements in this section, to reflect events or circumstances after the date of this Quarterly Report on Form 10-Q.

PART I—FINANCIAL INFORMATION

ANTERO MIDSTREAM PARTNERS LP

Condensed Consolidated Balance Sheets

December 31, 2016 and September 30, 2017

(Unaudited)

(In thousands)

 

See accompanying notes to condensed consolidated financial statements.

ANTERO MIDSTREAM PARTNERS LP

Condensed Consolidated Statements of Operations and Comprehensive Income

Three Months Ended September 30, 2016 and 2017

(Unaudited)

(In thousands, except per unit amounts)

 

See accompanying notes to condensed consolidated financial statements.

ANTERO MIDSTREAM PARTNERS LP

Condensed Consolidated Statements of Operations and Comprehensive Income

Nine Months Ended September 30, 2016 and 2017

(Unaudited)

(In thousands, except per unit amounts)

 

 

See accompanying notes to condensed consolidated financial statements.

ANTERO MIDSTREAM PARTNERS LP

Condensed Consolidated Statements of Partners’ Capital

Nine Months Ended September 30, 2017 (Unaudited)

(In thousands)

 

See accompanying notes to condensed consolidated financial statements.

 

 

ANTERO MIDSTREAM PARTNERS LP

Condensed Consolidated Statements of Cash Flows

Nine Months Ended September 30, 2016 and 2017

(Unaudited)

(In thousands)

See accompanying notes to condensed consolidated financial statements.

(1) Business and Organization

 

Antero Midstream Partners LP (the “Partnership”) is a growth-oriented master limited partnership formed by Antero Resources Corporation (“Antero Resources”) to own, operate and develop midstream energy infrastructure primarily to service Antero Resources’ rapidly increasing production and completion activity in the Appalachian Basin’s Marcellus Shale and Utica Shale located in West Virginia and Ohio. The Partnership’s assets consist of gathering pipelines, compressor stations, interests in processing and fractionation plants, and water handling and treatment assets, through which the Partnership provides midstream services to Antero Resources under long-term, fixed-fee contracts. The Partnership’s condensed consolidated financial statements as of September 30, 2017, include the accounts of the Partnership and its 100% owned operating subsidiaries: Antero Midstream LLC, Antero Water LLC (“Antero Water”), and Antero Treatment LLC. The condensed consolidated financial statements also include the accounts of Antero Midstream Finance Corporation (“Finance Corp”), a wholly owned subsidiary and the co-issuer of the Partnership’s senior notes. The Partnership’s 100% owned operating subsidiaries fully and unconditionally guarantee the Partnership’s outstanding debt securities on a joint and several basis. The Partnership has no independent assets or operations and there are no restrictions on the ability of the Partnership to obtain funds from its 100% owned subsidiaries by dividend or loan.

The Partnership also has a 15% equity interest in the gathering system of Stonewall Gas Gathering LLC (“Stonewall”) and a 50% equity interest in a joint venture to develop processing and fractionation assets with MarkWest Energy Partners, L.P. (“MarkWest”). See Note 11 – Equity Method Investments.

The Partnership’s financial statements are consolidated with the financial statements of Antero Resources (NYSE: AR), our primary beneficiary, for financial reporting purposes.

On April 6, 2017, in connection with its initial public offering, Antero Resources Midstream Management LLC (“ARMM”) formed Antero Midstream Partners GP LLC (“AMP GP” or our “general partner”), a Delaware limited liability company, as a wholly owned subsidiary, and, on April 11, 2017, assigned to AMP GP the general partner interest in us. Concurrent with the assignment, AMP GP was admitted as the Partnership’s sole general partner and ARMM ceased to be our general partner.

On May 9, 2017, ARMM closed its initial public offering. In connection with the offering, ARMM was converted into a Delaware limited partnership, and changed its name to Antero Midstream GP LP (“AMGP”).

(2)Summary of Significant Accounting Policies

(a) Basis of Presentation

These condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) applicable to interim financial information and should be read in the context of the December 31, 2016 combined consolidated financial statements and notes thereto for a more complete understanding of the Partnership’s operations, financial position, and accounting policies.  The December 31, 2016 combined consolidated financial statements have been filed with the SEC in the Partnership’s 2016 Form 10-K.

These unaudited condensed consolidated financial statements of the Partnership have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information, and, accordingly, do not include all of the information and footnotes required by GAAP for complete consolidated financial statements. In the opinion of management, these unaudited condensed consolidated financial statements include all adjustments (consisting of normal and recurring accruals) considered necessary to present fairly the Partnership’s financial position as of December 31, 2016 and September 30, 2017, the results of its operations for the three and nine months ended September 30, 2016 and 2017, and its cash flows for the nine months ended September 30, 2016 and 2017. The Partnership has no items of other comprehensive income or loss; therefore, its net income or loss is identical to its comprehensive income or loss.

Certain costs of doing business that are incurred by Antero Resources on our behalf have been reflected in the condensed consolidated financial statements. These costs include general and administrative expenses attributed to us by Antero Resources in exchange for:

Transactions between us and Antero Resources have been identified in the condensed consolidated financial statements (see Note 3—Related Party Transactions).

As of the date these condensed consolidated financial statements were filed with the SEC, the Partnership completed its evaluation of potential subsequent events for disclosure and no items requiring disclosure were identified, except the declaration of a cash distribution to unitholders, as described in Note 7—Partnership Equity and Distributions, and the amended and restated credit facility entered into in October 2017, as described in Note 4—Long-Term Debt.

(b)Revenue Recognition

We provide gathering and compression and water handling and treatment services under fee-based contracts based on throughput or cost plus a margin. Under these arrangements, we receive fees for gathering oil and gas products, compression services, and water handling and treatment services. We recognize revenue when all of the following criteria are met: (1) persuasive evidence of an agreement exists, (2) services have been rendered, (3) prices are fixed or determinable and (4) collectability is reasonably assured.

(c) Use of Estimates

The preparation of the condensed consolidated financial statements and notes in conformity with GAAP requires that management formulate estimates and assumptions that affect revenues, expenses, assets, liabilities and the disclosure of contingent assets and liabilities. Items subject to estimates and assumptions include the useful lives of property and equipment and valuation of accrued liabilities, among others. Although management believes these estimates are reasonable, actual results could differ from these estimates.

(d)Cash and Cash Equivalents

We consider all liquid investments purchased with an initial maturity of three months or less to be cash equivalents. The carrying value of cash and cash equivalents approximates fair value due to the short-term nature of these instruments.

(e)Property and Equipment

Property and equipment primarily consists of gathering pipelines, compressor stations and fresh water delivery pipelines and facilities stated at historical cost less accumulated depreciation. We capitalize construction-related direct labor and material costs. We also capitalize interest on capital costs related to the water treatment facility currently under construction. Maintenance and repair costs are expensed as incurred.

Depreciation is computed using the straight-line method over the estimated useful lives and salvage values of assets. The depreciation of fixed assets recorded under capital lease agreements is included in depreciation expense. Uncertainties that may impact these estimates of useful lives include, among others, changes in laws and regulations relating to environmental matters, including air and water quality, restoration and abandonment requirements, economic conditions, and supply and demand for our services in the areas in which we operate. When assets are placed into service, management makes estimates with respect to useful lives and salvage values that management believes are reasonable. However, subsequent events could cause a change in estimates, thereby impacting future depreciation amounts.

Our investment in property and equipment was as follows as of December 31, 2016 and September 30, 2017 (in thousands):

 

(f)Equity‑Based Compensation

Our condensed consolidated financial statements reflect various equity-based compensation awards granted by Antero Resources, as well as equity-based compensation awards associated with our own plan. These awards include restricted stock, stock options, and phantom units. For purposes of these condensed consolidated financial statements, we recognized as expense in each period an amount allocated from Antero Resources, with the offset included in partners’ capital. See Note 3—Related Party Transactions for additional information regarding Antero Resources’ allocation of expenses to us.

Our predecessor general partner adopted the Antero Midstream Partners LP Long-Term Incentive Plan (“Midstream LTIP”), pursuant to which certain non-employee directors of our general partner and certain officers, employees and consultants of our general partner and its affiliates are eligible to receive awards representing equity interests in the Partnership. An aggregate of 10,000,000 common units may be delivered pursuant to awards under the Midstream LTIP, subject to customary adjustments. For accounting purposes, these units are treated as if they are distributed from us to Antero Resources. Antero Resources recognizes compensation expense for the units awarded to its employees and a portion of that expense is allocated to us. See Note 6—Equity-Based Compensation.

(g)Income Taxes

Our condensed consolidated financial statements do not include a provision for income taxes as we are treated as a partnership for federal and state income tax purposes, with each partner being separately taxed on its share of taxable income.

(h)Fair Value Measures

The Financial Accounting Standards Board (the “FASB”) Accounting Standards Codification Topic 820, Fair Value Measurements and Disclosures, clarifies the definition of fair value, establishes a framework for measuring fair value, and expands disclosures about fair value measurements. This guidance also relates to all nonfinancial assets and liabilities that are not recognized or disclosed on a recurring basis (e.g., the initial recognition of asset retirement obligations and impairments of long‑lived assets). The fair value is the price that we estimate would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. A fair value hierarchy is used to prioritize inputs to valuation techniques used to estimate fair value. An asset or liability subject to the fair value requirements is categorized within the hierarchy based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. The highest priority (Level 1) is given to unadjusted quoted market prices in active markets for identical assets or liabilities, and the lowest priority (Level 3) is given to unobservable inputs. Level 2 inputs are data, other than quoted prices included within Level 1, that are observable for the asset or liability, either directly or indirectly.

(i) Investment in Unconsolidated Affiliates

The Partnership uses the equity method to account for its investments in companies if the investment provides the Partnership with the ability to exercise significant influence over, but not control, the operating and financial policies of the investee. The Partnership’s consolidated net income includes the Partnership’s proportionate share of the net income or loss of such companies. The Partnership’s judgment regarding the level of influence over each equity method investee includes considering key factors such as the Partnership’s ownership interest, representation on the board of directors and participation in policy-making decisions of the investee and material intercompany transactions. See Note 11–Equity Method Investments.

 

 

 

(3)Related Party Transactions

Certain of the Partnership’s unitholders, including members of its executive management group, own a significant interest in the Partnership and, either through their representatives or directly, serve as members of the Board of Directors of Antero Resources and the Boards of Directors of the general partners of the Partnership and AMGP.  These same groups or individuals own common stock in Antero Resources and common shares and other interests in AMGP, which indirectly owns the incentive distribution rights in the Partnership.  The Partnership’s executive management group also manages the operations and business affairs of Antero Resources and AMGP.

(a)Revenues

Substantially all revenues earned in the nine months ended September 30, 2016 and 2017 were earned from Antero Resources under various agreements for gathering and compression and water handling and treatment.

(b)Accounts receivable—Antero Resources and Accounts payable—Antero Resources

Accounts receivable—Antero Resources represents amounts due from Antero Resources, primarily related to gathering and compression services and water handling and treatment services. Accounts payable—Antero Resources represents amounts due to Antero Resources for general and administrative expenses, seconded employees, and other costs.

(c)Allocation of Costs

The employees supporting our operations are employees of Antero Resources. Direct operating expense includes allocated costs of $1.0 million and $2.6 million during the three months ended September 30, 2016 and 2017, respectively, and $2.8 million and $5.0 million during the nine months ended September 30, 2016 and 2017, respectively, related to labor charges for Antero Resources employees associated with the operation of our gathering lines, compressor stations, and water handling and treatment assets. General and administrative expense includes allocated costs of $12.2 million and $13.0 million during the three months ended September 30, 2016 and 2017, respectively, and $36.1 million and $39.8 million during the nine months ended September 30, 2016 and 2017, respectively. These costs relate to: (i) various business services, including payroll processing, accounts payable processing and facilities management, (ii) various corporate services, including legal, accounting, treasury, information technology and human resources and (iii) compensation, including equity-based compensation (see Note 6—Equity-Based Compensation for more information). These expenses are charged or allocated to us based on the nature of the expenses and are allocated based on a combination of our proportionate share of gross property and equipment, capital expenditures and labor costs, as applicable. We reimburse Antero Resources directly for all general and administrative costs allocated to us, with the exception of noncash equity compensation allocated to the Partnership for awards issued under the Antero Resources long-term incentive plan or the Midstream LTIP.

 

(4)Long-Term Debt

Long-term debt was as follows at December 31, 2016 and September 30, 2017 (in thousands):

 

(a) Revolving Credit Facility

On November 10, 2014 the Partnership entered into a revolving credit facility with a syndicate of bank lenders (the “Prior Credit Facility”).  On October 26, 2017 we executed an amendment and restatement of the Prior Credit Facility with a syndicate of bank lenders (our “Credit Facility” or our “revolving credit facility”). The Credit Facility provides for lender commitments of $1.5 billion and a letter of credit sublimit of $150 million. The Credit Facility matures on October 26, 2022.

Under the Credit Facility, “Investment Grade Period” is a period that, as long as no event of default has occurred and the Partnership is in pro forma compliance with the financial covenants under the Credit Facility, commences when the Partnership elects to give notice to the Administrative Agent that the Partnership has received at least one of (i) a BBB- or better rating from Standard and Poor’s and (ii) a Baa3 or better from Moody’s (provided that the non-investment grade rating from the other rating agency is at least either Bai if Moody’s or BB+ if Standard and Poor’s (an “Investment Grade Rating”)). An Investment Grade Period can end at the Partnership’s election.    

During a period that is not an Investment Grade Period, the Credit Facility is ratably secured by mortgages on substantially all of our properties, including the properties of our subsidiaries, and guarantees from our subsidiaries. During an Investment Grade Period, the liens securing the obligations thereunder shall be automatically released (subject to the provisions of the Credit Facility).

The revolving credit facility contains certain covenants including restrictions on indebtedness, and requirements with respect to leverage and interest coverage ratios; provided, however, that during an Investment Grade Period, such covenants become less restrictive on the Partnership. The revolving credit facility permits distributions to the holders of our equity interests in accordance with the cash distribution policy adopted by the board of directors of our general partner in connection with the Partnership’s initial public offering, provided that no event of default exists or would be caused thereby, and only to the extent permitted by our organizational documents. The Partnership was in compliance with all of the financial covenants under the Prior Credit Facility as of December 31, 2016 and September 30, 2017.

Principal amounts borrowed are payable on the maturity date with such borrowings bearing interest that is payable quarterly or, in the case of Eurodollar Rate Loans, at the end of the applicable interest period if shorter than six months. Interest is payable at a variable rate based on LIBOR or the base rate, determined by election at the time of borrowing.  Interest at the time of borrowing is determined with reference to (i) during any period that is not an Investment Grade Period, the Partnership’s then-current leverage ratio and (ii) during an Investment Grade Period, with reference to the rating given to the Partnership by Moody’s or Standard and Poor’s.  During an Investment Grade Period, the applicable margin rates are reduced by 25 basis points.  Commitment fees on the unused portion of the revolving credit facility are due quarterly at rates ranging from 0.25% to 0.375% based on the leverage ratio, during a period that is not an Investment Grade Period, and 0.175% to 0.375% based on the Partnership’s rating during an Investment Grade Period.

At December 31, 2016 and September 30, 2017, we had borrowings under the Prior Credit Facility of $210 million and $427 million, respectively, with a weighted average interest rate of 2.23% and 2.82%, respectively.  No letters of credit were outstanding at December 31, 2016 or September 30, 2017 under the Prior Credit Facility. 

(b) 5.375% Senior Notes Due 2024

On September 13, 2016, the Partnership and Finance Corp, as co-issuers, issued $650 million in aggregate principal amount of 5.375% senior notes due September 15, 2024 (the “2024 Notes”) at par.  The 2024 Notes are unsecured and effectively subordinated to the revolving credit facility to the extent of the value of the collateral securing the revolving credit facility.  The 2024 Notes are fully and unconditionally guaranteed on a joint and several senior unsecured basis by the Partnership’s wholly-owned subsidiaries (other than Finance Corp) and certain of its future restricted subsidiaries.  Interest on the 2024 Notes is payable on March 15 and September 15 of each year.  The Partnership may redeem all or part of the 2024 Notes at any time on or after September 15, 2019 at redemption prices ranging from 104.031% on or after September 15, 2019 to 100.00% on or after September 15, 2022.  In addition, prior to September 15, 2019, the Partnership may redeem up to 35% of the aggregate principal amount of the 2024 Notes with an amount of cash not greater than the net cash proceeds of certain equity offerings, if certain conditions are met, at a redemption price of 105.375% of the principal amount of the 2024 Notes, plus accrued and unpaid interest.  At any time prior to September 15, 2019, the Partnership may also redeem the 2024 Notes, in whole or in part, at a price equal to 100% of the principal amount of the 2024 Notes plus a “make-whole” premium and accrued and unpaid interest.  If the Partnership undergoes a change of control, the holders of the 2024 Notes will have the right to require the Partnership to repurchase all or a portion of the notes at a price equal to 101% of the principal amount of the 2024 Notes, plus accrued and unpaid interest.

 

(5)  Accrued Liabilities

Accrued liabilities as of December 31, 2016 and September 30, 2017 consisted of the following items (in thousands):

 

(6)Equity-Based Compensation

Our general and administrative expenses include equity-based compensation costs allocated to us by Antero Resources for grants made pursuant to Antero Resources’ long‑term incentive plan and the Midstream LTIP. Equity‑based compensation expense allocated to us was $6.6 million and $7.2 million for the three months ended September 30, 2016 and 2017, respectively, and $19.4 million and $20.4 million for the nine months ended September 30, 2016 and 2017, respectively. These expenses were allocated to us based on our proportionate share of Antero Resources’ labor costs. Antero Resources has unamortized expenses totaling approximately $140.1 million as of September 30, 2017 related to its various equity-based compensation plans, which includes the Midstream LTIP. A portion of this will be allocated to us as it is amortized over the remaining service period of the related awards. The Partnership does not reimburse Antero Resources for noncash equity compensation allocated to it for awards issued under the Antero Resources long-term incentive plan or the Midstream LTIP.

Midstream LTIP

Our general partner manages our operations and activities, and Antero Resources employs the personnel who provide support to our operations pursuant to a secondment agreement between us and Antero Resources. Our predecessor general partner adopted the Midstream LTIP, pursuant to which non‑employee directors of our general partner and certain officers, employees and consultants of our general partner and its affiliates are eligible to receive awards representing equity interests in the Partnership. An aggregate of 10,000,000 common units may be delivered pursuant to awards under the Midstream LTIP, subject to customary adjustments. A total of 7,656,134 common units are available for future grant under the Midstream LTIP as of September 30, 2017. Phantom units granted under the Midstream LTIP vest subject to the satisfaction of service requirements, upon the completion of which common units in the Partnership and distribution equivalent rights are delivered to

the holder of the phantom units. Compensation related to each phantom unit award is recognized on a straight-line basis over the requisite service period of the entire award. The grant date fair values of these awards are determined based on the closing price of the Partnership’s common units on the date of grant. These units are accounted for as if they are distributed by the Partnership to Antero Resources. Antero Resources recognizes compensation expense for the units awarded and a portion of that expense is allocated to the Partnership. Antero Resources allocates equity-based compensation expense to the Partnership based on our proportionate share of Antero Resources’ labor costs. The Partnership’s portion of the equity-based compensation expense is included in general and administrative expenses, and recorded as a credit to the applicable classes of partners’ capital.

A summary of phantom unit awards activity during the nine months ended September 30, 2017 is as follows:

 

 

Intrinsic values are based on the closing price of the Partnership’s common units on the referenced dates. Midstream LTIP unamortized expense of $30.4 million at September 30, 2017, is expected to be recognized over a weighted average period of approximately 2.2 years and our proportionate share will be allocated to us as it is recognized.

 

 

(7)Partnership Equity and Distributions

Our Minimum Quarterly Distribution

Our partnership agreement provides for a minimum quarterly distribution of $0.17 per unit for each quarter, or $0.68 per unit on an annualized basis.

If cash distributions to our unitholders exceed $0.1955 per common unit in any quarter, our unitholders and the holder of our incentive distribution rights (“IDRs”), will receive distributions according to the following percentage allocations:

 

General Partner Interest

Our general partner, AMP GP, owns a non-economic general partner interest in us, which does not entitle it to receive cash distributions. However, AMGP controls the holder of the IDRs and may in the future own common units or other equity interests in us and would be entitled to receive distributions on any such interests.

Upon payment of the February 8, 2017 distribution to unitholders, the requirements for the conversion of all subordinated units were satisfied under our partnership agreement. As a result, effective February 9, 2017, the 75,940,957 subordinated units owned by Antero Resources were converted into common units on a one-for-one basis and now participate on terms equal with all

other common units in distributions of available cash. The conversion did not impact the amount of the cash distributions paid by the Partnership or the total units outstanding, as shown on the “Conversion of subordinated units to common units” line item on our condensed consolidated Statement of Partners’ Capital.

Cash Distributions

The board of directors of our general partner has declared a cash distribution of $0.34 per unit for the quarter ended September 30, 2017. The distribution will be payable on November 16, 2017 to unitholders of record as of November 1, 2017.

The following table details the amount of quarterly distributions the Partnership paid for each of its partnership interests, with respect to the quarter indicated (in thousands, except per unit data):

 

 

 

 

* Distribution equivalent rights on units that vested under the Midstream LTIP

 

 

 

(8)Net Income Per Limited Partner Unit

The Partnership’s net income is attributed to the limited partners, in accordance with their respective ownership percentages, and when applicable, giving effect to incentive distributions paid to the holders of the incentive distribution rights. Basic and diluted net income per limited partner unit is calculated by dividing limited partners’ interest in net income, less incentive distributions, by the weighted average number of outstanding limited partner units during the period.

We compute earnings per unit using the two-class method for master limited partnerships. Under the two-class method, earnings per unit is calculated as if all of the earnings for the period were distributed under the terms of the partnership agreement, regardless of whether the general partner has discretion over the amount of distributions to be made in any particular period, whether those earnings would actually be distributed during a particular period from an economic or practical perspective, or whether the general partner has other legal or contractual limitations on its ability to pay distributions that would prevent it from distributing all of the earnings for a particular period.

We calculate net income available to limited partners based on the distributions pertaining to the current period’s net income. After adjusting for the appropriate period’s distributions, the remaining undistributed earnings or excess distributions over earnings, if any, are attributed in accordance with the contractual terms of the partnership agreement under the two-class method.

Basic earnings per unit is computed by dividing net earnings attributable to unitholders by the weighted average number of units outstanding during each period. Diluted net income per limited partner unit reflects the potential dilution that could occur if agreements to issue common units, such as awards under long-term incentive plans, were exercised, settled or converted into common units. When it is determined that potential common units resulting from an award should be included in the diluted net

income per limited partner unit calculation, the impact is reflected by applying the treasury stock method. Earnings per common unit assuming dilution for the three months ended September 30, 2017 was calculated based on the diluted weighted average number of units outstanding of 187,144,983, including 563,817 dilutive units attributable to non-vested phantom unit awards. Earnings per common unit assuming dilution for the nine months ended September 30, 2017 was calculated based on the diluted weighted average number of units outstanding of 185,728,119, including 488,515 dilutive units attributable to non-vested phantom unit awards.

The Partnership’s calculation of net income per limited partner unit for the periods indicated is as follows (in thousands, except per unit data):

 

 

 

 

 

(9) Sale of Common Units Under Equity Distribution Agreement

During the third quarter of 2016, the Partnership entered into an Equity Distribution Agreement and in the first quarter of 2017 amended and restated the Equity Distribution Agreement to reflect AMP GP’s succession as our general partner (as amended and restated, the “Distribution Agreement”), pursuant to which the Partnership may sell, from time to time through brokers acting as its sales agents, common units representing limited partner interests having an aggregate offering price of up to $250 million.  The offer and sale of common units under the program has been registered with the SEC on an effective registration statement on Form S-3. Sales of the common units may be made by means of ordinary brokers’ transactions on the New York Stock Exchange, at market prices, in block transactions, or as otherwise agreed to between the Partnership and the sales agents.  Proceeds are expected to be used for general partnership purposes, which may include repayment of indebtedness and funding working capital or capital expenditures.  The Partnership is under no obligation to offer and sell common units under the Distribution Agreement.

During the nine months ended September 30, 2017, the Partnership issued and sold 777,262 common units under the Distribution Agreement, resulting in net proceeds of $25.5 million, net of $0.6 million of compensation payable to the sales agents for sales made during the period, and $0.4 million of other offering costs. As of September 30, 2017, the Partnership had the capacity to issue additional common units under the Distribution Agreement up to an aggregate sales price of $157.3 million.

(10) Fair Value Measurement

In connection with Antero Resources’ contribution of Antero Water and certain wastewater treatment assets to the Partnership in September 2015 (“Water Acquisition”), we agreed to pay Antero Resources (a) $125 million in cash if the Partnership delivers 176,295,000 barrels or more of fresh water during the period between January 1, 2017 and December 31, 2019 and (b) an additional $125 million in cash if the Partnership delivers 219,200,000 barrels or more of fresh water during the period between January 1, 2018 and December 31, 2020. This contingent consideration liability is valued based on Level 3 inputs.

The following table provides a reconciliation of changes in Level 3 financial liabilities measured at fair value on a recurring basis (in thousands):

 

 

We account for contingent consideration in accordance with applicable accounting guidance pertaining to business combinations. We are contractually obligated to pay Antero Resources contingent consideration in connection with the Water Acquisition, and therefore recorded this contingent consideration liability at the time of the Water Acquisition. We update our assumptions each reporting period based on new developments and adjust such amounts to fair value based on revised assumptions, if applicable, until such consideration is satisfied through payment upon achievement of the specified objectives or it is eliminated upon failure to achieve the specified objectives.

As of September 30, 2017, we expect to pay the entire amount of the contingent consideration amounts in 2019 and 2020. The fair value measurement is based on significant inputs not observable in the market and thus represents a Level 3 measurement within the fair value hierarchy. The fair value of the contingent consideration liability associated with future milestone payments was based on the risk adjusted present value of the contingent consideration payout.

The carrying values of accounts receivable and accounts payable at December 31, 2016 and September 30, 2017 approximated market value because of their short-term nature. The carrying value of the amounts under Prior Credit Facility at December 31, 2016 and September 30, 2017 approximated fair value because the variable interest rates are reflective of current market conditions.

Based on Level 2 market data inputs, the fair value of the Partnership’s 2024 Notes was approximately $676.0 million at September 30, 2017.

(11) Equity Method Investments

On February 6, 2017, we formed a joint venture to develop processing and fractionation assets in Appalachia (the “Joint Venture”) with MarkWest, a wholly owned subsidiary of MPLX, LP. We and MarkWest each own a 50% equity interest in the Joint Venture and MarkWest operates the Joint Venture assets. The Joint Venture assets consist of processing plants in West Virginia, and a one-third interest in a recently commissioned MarkWest fractionator in Ohio.

In conjunction with the Joint Venture, on February 10, 2017 we issued 6,900,000 common units, including common units issued pursuant to the underwriters’ option to purchase additional common units, resulting in net proceeds of approximately $223 million (the “Offering”). We used the proceeds from the Offering to repay outstanding borrowings under our Prior Credit Facility incurred to fund the investment in the Joint Venture, and for general partnership purposes.

In the second quarter of 2016, the Partnership exercised its option to purchase a 15% equity interest in Stonewall, which operates the 67-mile Stonewall pipeline on which Antero is an anchor shipper.

Our condensed consolidated net income includes the Partnership’s proportionate share of the net income of equity method investees. When the Partnership records its proportionate share of net income, it increases equity income in the condensed consolidated statements of operations and comprehensive income and the carrying value of that investment. The Partnership uses the equity method of accounting to account for its investments in Stonewall and the Joint Venture because the Partnership exercises significant influence over the entities. Our judgment regarding the level of influence over our equity investments includes considering key factors such as the Partnership’s ownership interest, representation on the board of directors and participation in policy-making decisions of Stonewall and the Joint Venture.

The following table is a reconciliation of our investments in unconsolidated affiliates as presented on our condensed consolidated balance sheets (in thousands):

 

 

 

(12)    Reporting Segments

The Partnership’s operations are located in the United States and are organized into two reporting segments: (1) gathering and processing and (2) water handling and treatment.

Gathering and Processing

The gathering and processing segment includes a network of gathering pipelines, compressor stations, and interests in processing and fractionation plants that collect and process natural gas, NGLs and oil from Antero Resources’ wells in West Virginia and Ohio.

Water Handling and Treatment

The Partnership’s water handling and treatment segment includes two independent systems that deliver fresh water from sources including the Ohio River, local reservoirs as well as several regional waterways. The water handling and treatment segment also includes other fluid handling services which includes high rate transfer, wastewater transportation, disposal and treatment.

These segments are monitored separately by management for performance and are consistent with internal financial reporting. These segments have been identified based on the differing products and services, regulatory environment and the expertise required for these operations. We evaluate the performance of the Partnership’s business segments based on operating income. Interest expense is primarily managed and evaluated on a consolidated basis.

Summarized financial information concerning the Partnership’s segments for the periods indicated is shown in the following table (in thousands):