UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of Earliest Event Reported): October 4, 2019

Hess Midstream Partners LP

(Exact Name of Registrant as Specified in Its Charter)

1501 McKinney Street

Houston, Texas 77010

(Address of Principal Executive Offices) (Zip Code)

Registrant’s Telephone Number, Including Area Code: (713) 496-4200

N/A

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company  ☒

If an emerging growth company, indicate by check mark if the registrant has elected not 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.  ☒

Item 8.01. Other Events.

On October 4, 2019, Hess Midstream Partners LP (the “Company”) issued a press release announcing that it has commenced a private offer to exchange certain outstanding debt securities issued by Hess Infrastructure Partners LP and Hess Infrastructure Partners Finance Corporation for new debt securities of the Company.

A copy of the press release is attached as Exhibit 99.1 to this report and is incorporated herein by reference.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

This filing contains forward-looking statements within the meaning of federal securities laws regarding the Company. These forward-looking statements relate to, among other things, the proposed transaction between the Company and an affiliate and include expectations, estimates and projections concerning the business and operations, financial priorities and strategic plans of the combined entity. You can identify forward-looking statements by words such as “anticipate,” “believe,” “could,” “design,” “estimate,” “expect,” “forecast,” “goal,” “guidance,” “imply,” “intend,” “may,” “objective,” “opportunity,” “outlook,” “plan,” “position,” “potential,” “predict,” “project,” “prospective,” “pursue,” “seek,” “should,” “strategy,” “target,” “would,” “will” or other similar expressions that convey the uncertainty of future events or outcomes. Such forward-looking statements are not guarantees of future performance and are subject to risks, uncertainties and other factors, some of which are beyond the companies’ control and are difficult to predict. Forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from historical results and current projections or expectations. Factors that could cause the Company’s actual results to differ materially from those implied in the forward-looking statements include the following: the ability to consummate the proposed transaction between the Company and its affiliate on the proposed terms and timeline; the ability to satisfy various conditions to closing of the proposed transaction, and any conditions imposed on the combined entity in connection with the consummation of the proposed transaction; the risk that anticipated benefits of the proposed transaction may not be fully realized or may take longer to realize than expected, including whether the proposed transaction will be accretive within the expected timeframe or at all; negative capital market conditions; the ability to achieve strategic and financial objectives, including with respect to distribution coverage, future distribution levels, proposed projects and completed transactions; adverse changes in laws, including with respect to tax and regulatory matters; the adequacy of capital resources and liquidity, including, but not limited to, availability of sufficient funds to pay distributions, including the distribution to certain affiliates of the Company in connection with the transaction, and access to debt on commercially reasonable terms; and the ability to successfully execute business plans, growth strategies and self-funding models. When considering these forward-looking statements, you should keep in mind the risk factors and other cautionary statements in the Company’s annual report on Form 10-K for the year ended December 31, 2018, and, if applicable, the Company’s Quarterly Reports on Form 10-Q and Current Reports on Form 8-K filed by the Company with the Securities and Exchange Commission. The Company undertakes no obligation and does not intend to update these forward-looking statements to reflect events or circumstances occurring after this filing except as required by applicable law. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this filing.

Additional Information

In connection with the proposed transaction, a Registration Statement has been filed with the SEC. INVESTORS AND SECURITY HOLDERS ARE ENCOURAGED TO READ THE REGISTRATION STATEMENT AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC, INCLUDING THE PROSPECTUS THAT FORMS A PART OF THE REGISTRATION STATEMENT, BECAUSE THEY CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. The final prospectus will be made available to HESM unitholders. Investors and security holders will be able to obtain the documents free of charge at the SEC’s website, www.sec.gov, from the Company at its website, www.hessmidstream.com, or by contacting the Company’s Investor Relations at (212) 536-8244.

Item 9.01. Financial Statements and Exhibits.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit 99.1

Hess Midstream Partners LP Commences An Exchange Offer

for Senior Notes of Hess Infrastructure Partners LP and Hess Infrastructure Partners

Finance Corporation

HOUSTON, TEXAS—October 4, 2019—Hess Midstream Partners LP (NYSE: HESM) (“HESM”) today announced that it has commenced an offer to exchange (the “Exchange Offer”) any and all validly tendered and accepted senior notes listed below issued by Hess Infrastructure Partners LP and Hess Infrastructure Partners Finance Corporation (collectively, “HIP”) for new senior notes to be issued by HESM (the “Exchange Notes”) and cash, as described in the table below.

In consideration for each $1,000 principal amount of Existing HIP Notes validly tendered and related consents validly delivered (and not validly withdrawn) at or prior to 5:00 p.m., New York City time, on October 18, 2019, unless extended (such date and time, as it may be extended, the “Consent Date”), holders of Existing HIP Notes will be eligible to receive the consent payment set out in the table above (the “Consent Payment”). In exchange for each $1,000 principal amount of Existing HIP Notes validly tendered and related consents validly delivered (and not validly withdrawn) at or prior to 5:00 p.m., New York City time, on October 18, 2019, unless extended (such date and time, as it may be extended, the “Early Tender Date”), and not validly withdrawn (unless subsequently re-tendered and not validly withdrawn), holders of Existing HIP Notes will be eligible to receive the total consideration set out in the table above (the “Total Consideration”), which includes the Consent Payment and the early tender premium set out in such table (the “Early Tender Premium”). In exchange for each $1,000 principal amount of Existing HIP Notes validly tendered after the Early Tender Date but at or prior to 5:00 p.m., New York City time, on November 4, 2019, unless extended (such date and time, as it may be extended, the “Expiration Date”), and not validly withdrawn, holders of the Existing HIP Notes will be eligible to receive only the exchange consideration set out in such table (the “Exchange Consideration”).

In connection with the Exchange Offer, HIP is also soliciting consents (the “Consent Solicitation” and, together with the Exchange Offer, the “Exchange Offer and Consent Solicitation”) from eligible holders of the Existing HIP Notes to amend (the “Proposed Amendments”) the indenture dated November 22, 2017, governing the Existing HIP Notes (the “HIP Indenture”), upon the terms and subject to the conditions set forth in the Offering Memorandum (as defined below), to eliminate certain of the covenants, restrictive provisions and events of default included therein. If the Proposed Amendments are adopted, the Existing HIP Notes will be governed by the HIP Indenture, as amended by the Proposed Amendments, which will have less restrictive terms and afford reduced protections to the holders of the Existing HIP Notes compared to those terms and protections currently in the HIP Indenture or applicable to the Exchange Notes and, additionally, the Proposed Amendments will amend the merger covenant in the HIP Indenture in a way that will cause the Existing HIP Notes to be assumed by HESM upon the consummation of the reorganization (as described in the Offering Memorandum) and the Exchange Offer. In order for the Proposed Amendments to the HIP Indenture to be adopted, holders of at least a majority of the aggregate principal amount of the Existing HIP Notes outstanding must consent to the Proposed Amendments (the “Requisite Consent Trigger”), and those consents must be received and not withdrawn prior to the Expiration Date.

The Exchange Notes will accrue interest from (and including) the most recent date on which interest has been paid on the Existing HIP Notes accepted in the Exchange Offer and Consent Solicitation (August 15, 2019). Eligible holders who validly tender (and do not validly withdraw) Existing HIP Notes and related consents prior to the Consent Date and the Early Tender Date but do withdraw such Existing HIP Notes subsequent to the Early Tender Date but prior to the Expiration Date will receive the Consent Payment on the Settlement Date, even if such person is no longer the beneficial owner of such Existing HIP Notes at the Expiration Date, but such person will not receive the Exchange Consideration or the Early Tender Premium unless (i) such Existing HIP Notes were validly re-tendered (and not subsequently withdrawn) prior to the Expiration Date and (ii) such person is the beneficial owner of such Existing HIP Notes at the Expiration Date. Except as set forth below, no accrued but unpaid interest will be paid with respect to Existing HIP Notes tendered for exchange. For the avoidance of doubt, to the extent an interest payment date occurs prior to the date that will be promptly after the Expiration Date and is expected to be the second business day after the Expiration Date (the “Settlement Date”), eligible holders who validly tendered and did not validly withdraw Existing HIP Notes in the Exchange Offer and Consent Solicitation will receive accrued and unpaid interest on such interest payment date.

The Exchange Offer and Consent Solicitation is subject to a number of conditions described in the Offering Memorandum, including that the previously announced restructuring of HIP and HESM, as described in the Offering Memorandum and in the Form S-4 filed by HESM with the Securities and Exchange Commission, is consummated.

The Information Agent for the Exchange Offer and Consent Solicitation is:

D.F. King & Co., Inc.

48 Wall Street, 22nd Floor

New York, New York 10005

Attention: Andrew Beck

Banks and Brokers call: (212) 269-5550

All Others Call Toll-Free: (866) 745-0265

Email: hess@dfking.com

The Exchange Offer and Consent Solicitation is being made upon the terms and subject to the conditions set forth in HESM’s offering memorandum and consent solicitation statement, dated as of October 4, 2019 (the “Offering Memorandum”). Tenders of the Existing HIP Notes in the Exchange Offer and Consent Solicitation may be validly withdrawn at any time at or before the Expiration Date, however, a

withdrawal of the related consent to the Proposed Amendments to the HIP Indenture may only be validly withdrawn at any time prior to the Consent Revocation Deadline (as defined below) and will thereafter be irrevocable, even if HESM otherwise extends the Early Tender Date or extends the Exchange Offer and the Consent Solicitation beyond the initial Expiration Date, except in certain limited circumstances where additional withdrawal rights are required by law. In the event of termination of the Exchange Offer, the Existing HIP Notes tendered will be promptly returned to the tendering holders. Consents to the Proposed Amendments may be revoked at any time prior to 5:00 p.m., New York City time, on October 18, 2019, unless extended by us (such date and time, as it may be extended, the “Consent Revocation Deadline”), but may not be revoked at any time thereafter. Requests for documents may be directed to the Information Agent at the address and telephone numbers provided above. Documents will only be distributed to holders of Existing HIP Notes that complete and return an eligibility form at www.dfking.com/hess confirming that they are eligible holders for the purposes of the Exchange Offer and the Consent Solicitation.

The Exchange Notes have not been and will not be registered under the Securities Act of 1933, as amended (the “Securities Act”) or any state securities laws and may not be offered or sold in the United States absent registration or an applicable exemption from the registration requirements of the Securities Act and applicable state laws. This press release shall not constitute an offer to sell, or a solicitation of an offer to buy, any of the securities described herein and is also not a solicitation of the related consents. The Exchange Offer may be made only pursuant to the terms of the Offering Memorandum and the other related materials and only to such persons and in such jurisdictions as is permitted under applicable law.

About HESM

HESM is a fee-based, growth-oriented, traditional master limited partnership that was formed to own, operate, develop and acquire a diverse set of midstream assets to provide services to Hess and third-party customers. HESM’s assets are primarily located in the Bakken and Three Forks Shale plays in the Williston Basin area of North Dakota.

About HIP

HIP is a midstream energy joint venture between Hess Corporation and Global Infrastructure Partners. HIP owns various operating companies that provide a diverse mix of midstream oil and natural gas services in the core of the Bakken and Three Forks shale plays in the Williston Basin area of North Dakota. HIP also owns a 100% interest in the general partner of HESM.

Forward-Looking Information

This press release includes forward-looking statements regarding future events. These forward-looking statements are based on HESM’s and HIP’s current plans and expectations and involve a numbers of risks and uncertainties that could cause actual results and events to vary materially from the results and events anticipated or implied by such forward-looking statements, including, without limitation, the ability of HESM and HIP to satisfy the conditions to the settlement of the Exchange Offer and Consent Solicitation, general market and economic conditions, changes in law and government regulations and other matters affecting the business of HESM or HIP, and the other risks described in the Offering Memorandum. While HESM or HIP may elect to update these forward-looking statements at some point in the future, it specifically disclaims any obligation to do so, even if new information becomes available in the future. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this press release. Please refer to HESM’s publicly filed documents, including the most recent Forms 10-K and 10-Q for additional information about HESM and HIP and about the risks and uncertainties related to HESM’s and HIP’s business which may affect the statements made in this press release.

Contacts

Investors:

Jennifer Gordon

Director – Investor Relations

(212) 536-8244

Media:

Robert Young

(713) 496-6076