{"transactions":[{"id":2536311,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":134295,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II, LLC","position":1,"cik":"0001558915","reported_name":"ENERGY CAPITAL PARTNERS II, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134296,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II, LP","position":2,"cik":"0001456360","reported_name":"ENERGY CAPITAL PARTNERS II, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134297,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II-A, LP","position":3,"cik":"0001456364","reported_name":"ENERGY CAPITAL PARTNERS II-A, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134298,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II-B IP, LP","position":4,"cik":"0001558920","reported_name":"ENERGY CAPITAL PARTNERS II-B IP, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134299,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II-C (SUMMIT IP), LP","position":5,"cik":"0001558930","reported_name":"ENERGY CAPITAL PARTNERS II-C (SUMMIT IP), LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134300,"kind":"organization","name":"Energy Capital Partners II (Summit Co-Invest), LP","position":6,"cik":"0001532708","reported_name":"Energy Capital Partners II (Summit Co-Invest), LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Units (Limited Partner Interests)","published_at":"2021-10-22T16:31:29.000Z","date":"2020-05-28","kind":"disposition_to_issuer","acquired":false,"shares":45318866,"ownership":{"direct":false,"nature":"By Summit Midstream Partners, LLC"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On May 28, 2020, pursuant to a purchase agreement, dated as of May 3, 2020, the Issuer purchased (i) all the outstanding limited liability company interests of Summit Midstream Partners, LLC (\"Summit Investments\"), which is the sole member of Summit Midstream Partners Holdings, LLC (\"SMP Holdings\"), which in turn owns 45,318,866 common units representing limited partner interests in the Issuer (the \"Common Units\"), and (ii) 5,915,827 Common Units held by SMLP Holdings, LLC (\"SMLP\") for a total purchase price of $35 million in cash and warrants to purchase up to 10 million Common Units.  As a result of these transactions, Summit Investments became a wholly owned subsidiary of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Summit Investments is the sole member of SMP Holdings.  Energy Capital Partners II, LLC (\"ECP\") indirectly controls Energy Capital Partners II, LP (\"ECP II\"), Energy Capital Partners II-A, LP (\"ECP II-A\"), Energy Capital Partners II-B IP, LP (\"ECP II-B\"), Energy Capital Partners II-C (Summit IP), LP (\"ECP II-C\"), and Energy Capital Partners II (Summit Co-Invest), LP (\"ECP Summit Co-Invest\" and together with ECP II, ECP II-A, ECP II-B and ECP II-C, the \"ECP Funds\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Prior to the transactions reported herein, the ECP Funds owned a majority of the membership interests in Summit Investments and therefore may have been deemed to indirectly beneficially own the Common Units held of record by SMP Holdings.  The ECP Funds, other than ECP Summit Co-Invest, hold all of the membership interests in SMLP.  Accordingly, each of them, other than ECP Summit Co-Invest, may have been deemed to share beneficially ownership of the Common Units held by SMLP."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000899243-21-041219","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1456360/000089924321041219/doc4.xml","form_type":"4"}},{"id":2536310,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":134295,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II, LLC","position":1,"cik":"0001558915","reported_name":"ENERGY CAPITAL PARTNERS II, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134296,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II, LP","position":2,"cik":"0001456360","reported_name":"ENERGY CAPITAL PARTNERS II, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134297,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II-A, LP","position":3,"cik":"0001456364","reported_name":"ENERGY CAPITAL PARTNERS II-A, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134298,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II-B IP, LP","position":4,"cik":"0001558920","reported_name":"ENERGY CAPITAL PARTNERS II-B IP, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134299,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II-C (SUMMIT IP), LP","position":5,"cik":"0001558930","reported_name":"ENERGY CAPITAL PARTNERS II-C (SUMMIT IP), LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134300,"kind":"organization","name":"Energy Capital Partners II (Summit Co-Invest), LP","position":6,"cik":"0001532708","reported_name":"Energy Capital Partners II (Summit Co-Invest), LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Units (Limited Partner Interests)","published_at":"2021-10-22T16:31:29.000Z","date":"2020-05-28","kind":"disposition_to_issuer","acquired":false,"shares":5915827,"ownership":{"direct":false,"nature":"By SMLP Holdings, LLC"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On May 28, 2020, pursuant to a purchase agreement, dated as of May 3, 2020, the Issuer purchased (i) all the outstanding limited liability company interests of Summit Midstream Partners, LLC (\"Summit Investments\"), which is the sole member of Summit Midstream Partners Holdings, LLC (\"SMP Holdings\"), which in turn owns 45,318,866 common units representing limited partner interests in the Issuer (the \"Common Units\"), and (ii) 5,915,827 Common Units held by SMLP Holdings, LLC (\"SMLP\") for a total purchase price of $35 million in cash and warrants to purchase up to 10 million Common Units.  As a result of these transactions, Summit Investments became a wholly owned subsidiary of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Summit Investments is the sole member of SMP Holdings.  Energy Capital Partners II, LLC (\"ECP\") indirectly controls Energy Capital Partners II, LP (\"ECP II\"), Energy Capital Partners II-A, LP (\"ECP II-A\"), Energy Capital Partners II-B IP, LP (\"ECP II-B\"), Energy Capital Partners II-C (Summit IP), LP (\"ECP II-C\"), and Energy Capital Partners II (Summit Co-Invest), LP (\"ECP Summit Co-Invest\" and together with ECP II, ECP II-A, ECP II-B and ECP II-C, the \"ECP Funds\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Prior to the transactions reported herein, the ECP Funds owned a majority of the membership interests in Summit Investments and therefore may have been deemed to indirectly beneficially own the Common Units held of record by SMP Holdings.  The ECP Funds, other than ECP Summit Co-Invest, hold all of the membership interests in SMLP.  Accordingly, each of them, other than ECP Summit Co-Invest, may have been deemed to share beneficially ownership of the Common Units held by SMLP."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000899243-21-041219","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1456360/000089924321041219/doc4.xml","form_type":"4"}},{"id":3284433,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":134295,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II, LLC","position":1,"cik":"0001558915","reported_name":"ENERGY CAPITAL PARTNERS II, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"See Footnotes."}},{"id":134296,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II, LP","position":2,"cik":"0001456360","reported_name":"ENERGY CAPITAL PARTNERS II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"See Footnotes."}},{"id":134297,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II-A, LP","position":3,"cik":"0001456364","reported_name":"ENERGY CAPITAL PARTNERS II-A, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"See Footnotes."}},{"id":134298,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II-B IP, LP","position":4,"cik":"0001558920","reported_name":"ENERGY CAPITAL PARTNERS II-B IP, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"See Footnotes."}},{"id":134299,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II-C (SUMMIT IP), LP","position":5,"cik":"0001558930","reported_name":"ENERGY CAPITAL PARTNERS II-C (SUMMIT IP), LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"See Footnotes."}},{"id":134300,"kind":"organization","name":"Energy Capital Partners II (Summit Co-Invest), LP","position":6,"cik":"0001532708","reported_name":"Energy Capital Partners II (Summit Co-Invest), LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"See Footnotes."}}],"security":"Common Units (Limited Partner Interests)","published_at":"2020-02-07T17:11:55.000Z","date":"2019-11-15","kind":"grant","acquired":true,"shares":10714285,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On November 7, 2019, Summit Midstream Partners, LP (the \"Partnership\") and Summit Midstream Partners Holdings, LLC (\"SMPH\") entered into a second amendment to that certain Contribution Agreement between SMPH and the Partnership dated February 25, 2016, as amended, pursuant to which the Partnership made a cash payment of $51.75 million and issued 10,714,285 Common Units to SMPH on November 15, 2019."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Following the transactions reported herein, includes 45,318,866 common units held by SMPH."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"ECP indirectly controls Energy Capital Partners II, LP (\"ECP II\"), Energy Capital Partners II-A, LP (\"ECP II-A\"), Energy Capital Partners II-B IP, LP (''ECP II-B''), Energy Capital Partners II-C (Summit IP), LP (\"ECP II-C\") and Energy Capital Partners II (Summit Co-Invest), LP (\"ECP Summit Co-Invest\" and together with ECP II, ECP II-A, ECP II-B and ECP II-C, the ''ECP Funds''), which collectively hold more than a majority of the membership interests in Summit Midstream Partners, LLC (\"Summit\") and are entitled to appoint all the directors of Summit. Summit is the sole member of SMPH. Accordingly, ECP and the ECP Funds may be deemed to indirectly beneficially own the 45,318,866 common units held by SMPH but disclaim beneficial ownership except to the extent of their pecuniary interest therein."}],"balance_after":51234693,"source":{"system":"sec-edgar","filing":"0001209191-20-007577","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1456360/000120919120007577/doc4.xml","form_type":"4"}},{"id":3578356,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":134295,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II, LLC","position":1,"cik":"0001558915","reported_name":"ENERGY CAPITAL PARTNERS II, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"See Footnotes"}},{"id":134296,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II, LP","position":2,"cik":"0001456360","reported_name":"ENERGY CAPITAL PARTNERS II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134297,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II-A, LP","position":3,"cik":"0001456364","reported_name":"ENERGY CAPITAL PARTNERS II-A, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134298,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II-B IP, LP","position":4,"cik":"0001558920","reported_name":"ENERGY CAPITAL PARTNERS II-B IP, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134299,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II-C (SUMMIT IP), LP","position":5,"cik":"0001558930","reported_name":"ENERGY CAPITAL PARTNERS II-C (SUMMIT IP), LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134300,"kind":"organization","name":"Energy Capital Partners II (Summit Co-Invest), LP","position":6,"cik":"0001532708","reported_name":"Energy Capital Partners II (Summit Co-Invest), LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Units (Limited Partner Interests)","published_at":"2019-03-26T17:01:08.000Z","date":"2019-03-22","kind":"grant","acquired":true,"shares":8750000,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On March 22, 2019, pursuant to that certain Equity Restructuring Agreement, dated as of February 25, 2019, the incentive distribution rights (\"IDRs\") and the approximately 2% general partner interest in the Issuer held by Summit Midstream GP, LLC (the \"General Partner\") were converted into (i) 8,750,000 newly issued common units of the Issuer and (ii) a non-economic general partner interest in the Issuer. Immediately following the issuance of the 8,750,000 common units, the General Partner distributed the units to its sole member, Summit Midstream Partners Holdings, LLC (\"SMPH\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Following the transactions reported herein, includes 34,604,581 common units held by SMPH and 5,915,827 common units held by SMLP Holdings, LLC (\"SMLP Holdings\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Energy Capital Partners II, LP (\"ECP II\") and certain of its parallel funds (collectively, the \"SMLP Holdings Owners\") collectively hold all of the SMPH membership interests in SMLP Holdings. Energy Capital Partners II, LLC (\"ECP\") indirectly controls the SMLP Holdings Owners. Accordingly, ECP and the SMLP Holdings Owners may be deemed to indirectly beneficially own the 5,915,827 common units held by SMLP Holdings but disclaim beneficial ownership except to the extent of their pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"ECP indirectly controls ECP II, Energy Capital Partners II-A, LP (\"ECP II-A\"), Energy Capital Partners II-B IP, LP (''ECP II-B''), Energy Capital Partners II-C (Summit IP), LP (\"ECP II-C\") and Energy Capital Partners II (Summit Co-Invest), LP (\"ECP Summit Co-Invest\" and together with ECP II, ECP II-A, ECP II-B and ECP II-C, the ''ECP Funds''), which collectively hold more than a majority of the membership interests in Summit Midstream Partners, LLC (\"Summit\") and are entitled to appoint all the directors of Summit. Summit is the sole member of SMPH. Accordingly, ECP and the ECP Funds may be deemed to indirectly beneficially own the 34,604,581 common units held by SMPH but disclaim beneficial ownership except to the extent of their pecuniary interest therein."}],"balance_after":40520408,"source":{"system":"sec-edgar","filing":"0000899243-19-008952","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1456360/000089924319008952/doc4.xml","form_type":"4"}},{"id":4464001,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":134295,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II, LLC","position":1,"cik":"0001558915","reported_name":"ENERGY CAPITAL PARTNERS II, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false,"other_text":"See Footnotes"}},{"id":134296,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II, LP","position":2,"cik":"0001456360","reported_name":"ENERGY CAPITAL PARTNERS II, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134297,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II-A, LP","position":3,"cik":"0001456364","reported_name":"ENERGY CAPITAL PARTNERS II-A, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134298,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II-B IP, LP","position":4,"cik":"0001558920","reported_name":"ENERGY CAPITAL PARTNERS II-B IP, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134299,"kind":"organization","name":"ENERGY CAPITAL PARTNERS II-C (SUMMIT IP), LP","position":5,"cik":"0001558930","reported_name":"ENERGY CAPITAL PARTNERS II-C (SUMMIT IP), LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":134300,"kind":"organization","name":"Energy Capital Partners II (Summit Co-Invest), LP","position":6,"cik":"0001532708","reported_name":"Energy Capital Partners II (Summit Co-Invest), LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"COMMON UNITS (LIMITED PARTNER INTERESTS)","published_at":"2017-02-07T17:47:06.000Z","date":"2017-02-03","kind":"sale","acquired":false,"shares":4000000,"price":24,"value":96000000.0,"ownership":{"direct":false,"nature":"BY: SUMMIT MIDSTREAM PARTNERS HOLDINGS, LLC"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On February 3, 2017, Summit Midstream Partners Holdings, LLC (\"SMPH\") sold 4,000,000 common units representing limited partner interests in the Issuer to the underwriters in a public offering."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Energy Capital Partners II, LP (\"ECP II\") and certain of its parallel funds (collectively, the \"SMLP Holdings Owners\") collectively hold all of the membership interests in SMLP Holdings, LLC(''SMLP Holdings''). Energy Capital Partners II, LLC (''ECP'') indirectly controls the SMLP Holdings Owners. Accordingly, ECP and the SMLP Holdings Owners may be deemed to indirectly beneficially own the 5,915,827 common units held by SMLP Holdings but disclaim beneficial ownership except to the extent of their pecuniary interest therein."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"ECP indirectly controls ECP II, Energy Capital Partners II-A, LP (''ECP II-A''), Energy Capital Partners II-B IP, LP (''ECP II-B''), Energy Capital Partners II-C (Summit IP), LP (''ECP II-C'') and Energy Capital Partners II (Summit Co-Invest), LP (\"ECP Summit Co-Invest\" and together with ECP II, ECP II-A, ECP II-B and ECP II-C, the ''ECP Funds''), which collectively hold more than a majority of the membership interests in Summit Midstream Partners, LLC (\"Summit\") and are entitled to appoint all the directors of Summit. Summit is the sole member of SMPH and may be deemed to have indirect beneficial ownership of the 25,854,581 common units held by SMPH. Accordingly, ECP and the ECP Funds may be deemed to indirectly beneficially own the 25,854,581 common units held by SMPH but disclaim beneficial ownership except to the extent of their pecuniary interest therein."}],"balance_after":25854581,"source":{"system":"sec-edgar","filing":"0001104659-17-007027","document":"a4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1456360/000110465917007027/a4.xml","form_type":"4"}}]}