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Hess Infrastructure Partners GP LLC is the general partner of Hess Midstream GP LLC which is the general partner of Hess Midsteam LP. Hess Infrastructure Partners GP LLC is a 50/50 joint venture between Hess Investments North Dakota LLC and GIP II Blue Holding Partnership, L.P. As such, each of the foregoing entities may be deemed to beneficially owned the securities held of record by Hess Midstream GP LP. Each such entity disclaims beneficial ownership of such securities except to the extent of their pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Global Infrastructure Investors II, LLC (\"Global Investors\") is the sole general partner of Global Infrastructure GP II, L.P. (\"Global GP\"), which is the sole member of GIP Blue Holding GP, LLC, (\"Blue Holding GP\"), which is the general partner of GIP II Blue Holding Partnership, L.P. (\"Blue Holding\"). As such, each of Global Investors, Global GP and Blue Holding GP may be deemed to beneficially own the securities held of record by Blue Holding. Each such entity disclaims beneficial ownership of such securities except to the extent of their pecuniary interest therein."}],"balance_after":898000,"source":{"system":"sec-edgar","filing":"0000899243-19-029483","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1552830/000089924319029483/doc4.xml","form_type":"4"}},{"id":3338318,"issuer":{"id":16154,"kind":"organization","name":"Hess Midstream Partners LP","symbol":"HESM"},"owners":[{"id":84113,"kind":"person","name":"Global Infrastructure Investors II, LLC","position":1,"cik":"0001552830","reported_name":"Global Infrastructure Investors II, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":84114,"kind":"person","name":"Global Infrastructure GP II, L.P.","position":2,"cik":"0001552829","reported_name":"Global Infrastructure GP II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":84115,"kind":"person","name":"GIP Blue Holding GP, LLC","position":3,"cik":"0001702754","reported_name":"GIP Blue Holding GP, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136357,"kind":"person","name":"GIP II Blue Holding Partnership, L.P.","position":4,"cik":"0001701926","reported_name":"GIP II Blue Holding Partnership, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Subordinated Units","published_at":"2019-12-17T19:16:00.000Z","date":"2019-12-16","kind":"disposition_to_issuer","acquired":false,"shares":13639827,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Pursuant to the Agreement and Plan of Merger dated October 3, 2019 (the \"Merger Agreement\"), each Common Unit and Subordinated Unit of Hess Midstream Partners LP (\"Old HESM\") held by the Reporting Persons prior to the effective time of the transactions contemplated by the Merger Agreement (the \"Effective Time) were exchanged for 898,000 Class A Shares, 266,416,928 Class B Shares and 133,208,464 Opco Class B Units of Hess Midstream LP (\"New HESM\")."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the Agreement and Plan of Merger dated October 3, 2019 (the \"Merger Agreement\"), each Common Unit and Subordinated Unit of Hess Midstream Partners LP (\"Old HESM\") held by the Reporting Persons prior to the effective time of the transactions contemplated by the Merger Agreement (the \"Effective Time) were exchanged for 898,000 Class A Shares, 266,416,928 Class B Shares and 133,208,464 Opco Class B Units of Hess Midstream LP (\"New HESM\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Pursuant to the Agreement and Plan of Merger dated October 3, 2019 (the \"Merger Agreement\"), each Common Unit and Subordinated Unit of Hess Midstream Partners LP (\"Old HESM\") held by the Reporting Persons prior to the effective time of the transactions contemplated by the Merger Agreement (the \"Effective Time) were exchanged for 898,000 Class A Shares, 266,416,928 Class B Shares and 133,208,464 Opco Class B Units of Hess Midstream LP (\"New HESM\")."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Pursuant to the Agreement and Plan of Merger dated October 3, 2019 (the \"Merger Agreement\"), each Common Unit and Subordinated Unit of Hess Midstream Partners LP (\"Old HESM\") held by the Reporting Persons prior to the effective time of the transactions contemplated by the Merger Agreement (the \"Effective Time) were exchanged for 898,000 Class A Shares, 266,416,928 Class B Shares and 133,208,464 Opco Class B Units of Hess Midstream LP (\"New HESM\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The securities reported herein are held by GIP II Blue Holding Partnership, L.P. (\"Blue Holding\"). Global Infrastructure Investors II, LLC (\"Global Investors\") is the sole general partner of Global Infrastructure GP II, L.P. (\"Global GP\"), which is the sole member of GIP Blue Holding GP, LLC, (\"Blue Holding GP\"), which is the general partner of Blue Holding. As such, each of Global Investors, Global GP and Blue Holding GP may be deemed to beneficially own the securities held of record by Blue Holding. Each such entity disclaims beneficial ownership of such securities except to the extent of their pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Units","underlying_shares":13639827},"source":{"system":"sec-edgar","filing":"0000899243-19-029471","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1552830/000089924319029471/doc4.xml","form_type":"4"}},{"id":3338317,"issuer":{"id":16154,"kind":"organization","name":"Hess Midstream Partners LP","symbol":"HESM"},"owners":[{"id":84113,"kind":"person","name":"Global Infrastructure Investors II, LLC","position":1,"cik":"0001552830","reported_name":"Global Infrastructure Investors II, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":84114,"kind":"person","name":"Global Infrastructure GP II, L.P.","position":2,"cik":"0001552829","reported_name":"Global Infrastructure GP II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":84115,"kind":"person","name":"GIP Blue Holding GP, LLC","position":3,"cik":"0001702754","reported_name":"GIP Blue Holding GP, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136357,"kind":"person","name":"GIP II Blue Holding Partnership, L.P.","position":4,"cik":"0001701926","reported_name":"GIP II Blue Holding Partnership, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Units","published_at":"2019-12-17T19:16:00.000Z","date":"2019-12-16","kind":"disposition_to_issuer","acquired":false,"shares":5141327,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the Agreement and Plan of Merger dated October 3, 2019 (the \"Merger Agreement\"), each Common Unit and Subordinated Unit of Hess Midstream Partners LP (\"Old HESM\") held by the Reporting Persons prior to the effective time of the transactions contemplated by the Merger Agreement (the \"Effective Time) were exchanged for 898,000 Class A Shares, 266,416,928 Class B Shares and 133,208,464 Opco Class B Units of Hess Midstream LP (\"New HESM\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The securities reported herein are held by GIP II Blue Holding Partnership, L.P. (\"Blue Holding\"). Global Infrastructure Investors II, LLC (\"Global Investors\") is the sole general partner of Global Infrastructure GP II, L.P. (\"Global GP\"), which is the sole member of GIP Blue Holding GP, LLC, (\"Blue Holding GP\"), which is the general partner of Blue Holding. As such, each of Global Investors, Global GP and Blue Holding GP may be deemed to beneficially own the securities held of record by Blue Holding. Each such entity disclaims beneficial ownership of such securities except to the extent of their pecuniary interest therein."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000899243-19-029471","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1552830/000089924319029471/doc4.xml","form_type":"4"}},{"id":4353273,"issuer":{"id":16154,"kind":"organization","name":"Hess Midstream Partners LP","symbol":"HESM"},"owners":[{"id":84113,"kind":"person","name":"Global Infrastructure Investors II, LLC","position":1,"cik":"0001552830","reported_name":"Global Infrastructure Investors II, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":84114,"kind":"person","name":"Global Infrastructure GP II, L.P.","position":2,"cik":"0001552829","reported_name":"Global Infrastructure GP II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":84115,"kind":"person","name":"GIP Blue Holding GP, LLC","position":3,"cik":"0001702754","reported_name":"GIP Blue Holding GP, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136357,"kind":"person","name":"GIP II Blue Holding Partnership, L.P.","position":4,"cik":"0001701926","reported_name":"GIP II Blue Holding Partnership, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Units","published_at":"2017-04-12T16:41:08.000Z","date":"2017-04-10","kind":"other","acquired":false,"shares":1108500,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On April 10, 2017, the underwriters in the Issuer's initial public offering exercised their option to purchase additional common units. As a result, the Issuer did not issue 1,108,500 common units to GIP II Blue Holding Partnership, L.P. (\"Blue Holding\") which were previously reported as beneficially owned by the reporting persons."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On April 10, 2017, the underwriters in the Issuer's initial public offering exercised their option to purchase additional common units. As a result, the Issuer did not issue 1,108,500 common units to GIP II Blue Holding Partnership, L.P. (\"Blue Holding\") which were previously reported as beneficially owned by the reporting persons."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The securities reported herein are held by Blue Holding. Global Infrastructure Investors II, LLC (\"Global Investors\") is the sole general partner of Global Infrastructure GP II, L.P. (\"Global GP\"), which is the sole member of GIP Blue Holding GP, LLC, (\"Blue Holding GP\"), which is the general partner of Blue Holding. As such, each of Global Investors, Global GP and Blue Holding GP may be deemed to beneficially own the securities held of record by Blue Holding. Each such entity disclaims beneficial ownership of such securities except to the extent of their pecuniary interest therein."}],"balance_after":5141327,"source":{"system":"sec-edgar","filing":"0000899243-17-010066","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1552830/000089924317010066/doc4.xml","form_type":"4"}}]}