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The Reporting Person received DERs for each phantom unit, providing for payment on the vesting date of a lump sum of cash equal to the accrued distributions from and after the grant date of the phantom units."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The phantom units and associated DERs do not expire.  The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer."}],"balance_after":0,"derivative":{"exercise_price":2.3,"underlying":"Common Units","underlying_shares":13661},"source":{"system":"sec-edgar","filing":"0001209191-19-020091","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1235281/000120919119020091/doc4.xml","form_type":"4"}},{"id":3590229,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":68200,"kind":"person","name":"MALLETT LEONARD WAYNE","position":1,"cik":"0001235281","reported_name":"MALLETT LEONARD WAYNE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See remarks below."}}],"security":"Phantom Units","published_at":"2019-03-18T18:14:12.000Z","date":"2019-03-15","kind":"exercise","acquired":false,"shares":13661,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each phantom unit is the economic equivalent of one common unit."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"One-third of the phantom units subject to the original award agreement vested on March 15, 2019, with the remaining phantom units subject to vesting on the second and third anniversaries of the March 15, 2018 grant date, subject to continued employment. The Reporting Person received DERs for each phantom unit, providing for payment on the vesting date of a lump sum of cash equal to the accrued distributions from and after the grant date of the phantom units."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The phantom units and associated DERs do not expire.  The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer."}],"balance_after":27322,"derivative":{"underlying":"Common Units","underlying_shares":13661},"source":{"system":"sec-edgar","filing":"0001209191-19-020091","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1235281/000120919119020091/doc4.xml","form_type":"4"}},{"id":3590228,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":68200,"kind":"person","name":"MALLETT LEONARD WAYNE","position":1,"cik":"0001235281","reported_name":"MALLETT LEONARD WAYNE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See remarks below."}}],"security":"Distribution Equivalent Rights","published_at":"2019-03-18T18:14:12.000Z","date":"2019-03-15","kind":"disposition_to_issuer","acquired":false,"shares":10370,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"One-third of the phantom units subject to the original award agreement vested on March 15, 2019, with the final one-third of the phantom units subject to vesting on the third anniversary of the March 15, 2017 grant date, subject to continued employment. The Reporting Person received DERs for each phantom unit, providing for payment on the vesting date of a lump sum of cash equal to the accrued distributions from and after the grant date of the phantom units."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The phantom units and associated DERs do not expire.  The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer."}],"balance_after":0,"derivative":{"exercise_price":4.6,"underlying":"Common Units","underlying_shares":10370},"source":{"system":"sec-edgar","filing":"0001209191-19-020091","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1235281/000120919119020091/doc4.xml","form_type":"4"}},{"id":3590227,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":68200,"kind":"person","name":"MALLETT LEONARD WAYNE","position":1,"cik":"0001235281","reported_name":"MALLETT LEONARD WAYNE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See remarks below."}}],"security":"Phantom Units","published_at":"2019-03-18T18:14:12.000Z","date":"2019-03-15","kind":"exercise","acquired":false,"shares":10370,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each phantom unit is the economic equivalent of one common unit."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"One-third of the phantom units subject to the original award agreement vested on March 15, 2019, with the final one-third of the phantom units subject to vesting on the third anniversary of the March 15, 2017 grant date, subject to continued employment. The Reporting Person received DERs for each phantom unit, providing for payment on the vesting date of a lump sum of cash equal to the accrued distributions from and after the grant date of the phantom units."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The phantom units and associated DERs do not expire.  The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer."}],"balance_after":10370,"derivative":{"underlying":"Common Units","underlying_shares":10370},"source":{"system":"sec-edgar","filing":"0001209191-19-020091","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1235281/000120919119020091/doc4.xml","form_type":"4"}},{"id":3590226,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":68200,"kind":"person","name":"MALLETT LEONARD WAYNE","position":1,"cik":"0001235281","reported_name":"MALLETT LEONARD WAYNE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See remarks below."}}],"security":"Distribution Equivalent Rights","published_at":"2019-03-18T18:14:12.000Z","date":"2019-03-15","kind":"disposition_to_issuer","acquired":false,"shares":13495,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The final one-third of the phantom units subject to the original award agreement vested on March 15, 2019, on the third anniversary of the March 15, 2016 grant date. The Reporting Person received distribution equivalent rights (DERs) for each phantom unit, providing for payment on the vesting date of a lump sum of cash equal to the accrued distributions from and after the grant date of the phantom units."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The phantom units and associated DERs do not expire.  The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer."}],"balance_after":0,"derivative":{"exercise_price":6.9,"underlying":"Common Units","underlying_shares":13495},"source":{"system":"sec-edgar","filing":"0001209191-19-020091","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1235281/000120919119020091/doc4.xml","form_type":"4"}},{"id":3590225,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":68200,"kind":"person","name":"MALLETT LEONARD WAYNE","position":1,"cik":"0001235281","reported_name":"MALLETT LEONARD WAYNE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See remarks below."}}],"security":"Phantom Units","published_at":"2019-03-18T18:14:12.000Z","date":"2019-03-15","kind":"exercise","acquired":false,"shares":13495,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each phantom unit is the economic equivalent of one common unit."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The final one-third of the phantom units subject to the original award agreement vested on March 15, 2019, on the third anniversary of the March 15, 2016 grant date. The Reporting Person received distribution equivalent rights (DERs) for each phantom unit, providing for payment on the vesting date of a lump sum of cash equal to the accrued distributions from and after the grant date of the phantom units."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The phantom units and associated DERs do not expire.  The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer."}],"balance_after":0,"derivative":{"underlying":"Common Units","underlying_shares":13495},"source":{"system":"sec-edgar","filing":"0001209191-19-020091","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1235281/000120919119020091/doc4.xml","form_type":"4"}},{"id":3590224,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":68200,"kind":"person","name":"MALLETT LEONARD WAYNE","position":1,"cik":"0001235281","reported_name":"MALLETT LEONARD WAYNE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See remarks below."}}],"security":"Common Units","published_at":"2019-03-18T18:14:12.000Z","date":"2019-03-15","kind":"exercise","acquired":true,"shares":37526,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each phantom unit is the economic equivalent of one common unit."}],"balance_after":148134,"source":{"system":"sec-edgar","filing":"0001209191-19-020091","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1235281/000120919119020091/doc4.xml","form_type":"4"}},{"id":3743380,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":68200,"kind":"person","name":"MALLETT LEONARD WAYNE","position":1,"cik":"0001235281","reported_name":"MALLETT LEONARD WAYNE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See remarks below."}}],"security":"Distribution Equivalent Rights","published_at":"2018-12-04T17:26:41.000Z","date":"2018-12-01","kind":"disposition_to_issuer","acquired":false,"shares":28658,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The final one-third of the phantom units subject to the original award agreement vested on December 1, 2018, on the third anniversary of the December 1, 2015 grant date. The Reporting Person received distribution equivalent rights (DERs) for each phantom unit, providing for payment on the vesting date of a lump sum of cash equal to the accrued distributions from and after the grant date of the phantom units."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The phantom units and associated DERs do not expire.  The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer."}],"balance_after":0,"derivative":{"exercise_price":6.9,"underlying":"Common Units","underlying_shares":28658},"source":{"system":"sec-edgar","filing":"0001209191-18-060971","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1235281/000120919118060971/doc4.xml","form_type":"4"}},{"id":3743379,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":68200,"kind":"person","name":"MALLETT LEONARD WAYNE","position":1,"cik":"0001235281","reported_name":"MALLETT LEONARD WAYNE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See remarks below."}}],"security":"Phantom Units","published_at":"2018-12-04T17:26:41.000Z","date":"2018-12-01","kind":"exercise","acquired":false,"shares":28658,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each phantom unit is the economic equivalent of one common unit."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The final one-third of the phantom units subject to the original award agreement vested on December 1, 2018, on the third anniversary of the December 1, 2015 grant date. The Reporting Person received distribution equivalent rights (DERs) for each phantom unit, providing for payment on the vesting date of a lump sum of cash equal to the accrued distributions from and after the grant date of the phantom units."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The phantom units and associated DERs do not expire.  The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer."}],"balance_after":0,"derivative":{"underlying":"Common Units","underlying_shares":28658},"source":{"system":"sec-edgar","filing":"0001209191-18-060971","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1235281/000120919118060971/doc4.xml","form_type":"4"}},{"id":3743378,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":68200,"kind":"person","name":"MALLETT LEONARD WAYNE","position":1,"cik":"0001235281","reported_name":"MALLETT LEONARD WAYNE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See remarks below."}}],"security":"Common Units","published_at":"2018-12-04T17:26:41.000Z","date":"2018-12-01","kind":"exercise","acquired":true,"shares":28658,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each phantom unit is the economic equivalent of one common unit."}],"balance_after":110608,"source":{"system":"sec-edgar","filing":"0001209191-18-060971","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1235281/000120919118060971/doc4.xml","form_type":"4"}},{"id":3992081,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":68200,"kind":"person","name":"MALLETT LEONARD WAYNE","position":1,"cik":"0001235281","reported_name":"MALLETT LEONARD WAYNE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See remarks below."}}],"security":"Phantom Units","published_at":"2018-03-16T17:41:37.000Z","date":"2018-03-15","kind":"grant","acquired":true,"shares":40983,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each phantom unit is the economic equivalent of one common unit."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"One-third of the phantom units (rounded down to the nearest whole number of units, except in the case of the final vesting date) shall vest on each of the first, second and third anniversaries of the Grant Date (March 15, 2018), subject to continued employment and accelerated vesting as provided in the applicable award agreement. The Reporting Person will receive distribution equivalent rights for each phantom unit, providing for payment on the vesting date of a lump sum of cash equal to the accrued distributions from and after the grant date of the phantom units."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The phantom units and associated DERs do not expire.  The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer."}],"balance_after":40983,"derivative":{"underlying":"Common Units","underlying_shares":40983},"source":{"system":"sec-edgar","filing":"0001209191-18-020313","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1235281/000120919118020313/doc4.xml","form_type":"4"}},{"id":3992080,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":68200,"kind":"person","name":"MALLETT LEONARD WAYNE","position":1,"cik":"0001235281","reported_name":"MALLETT LEONARD WAYNE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See remarks below."}}],"security":"Distribution Equivalent Rights","published_at":"2018-03-16T17:41:37.000Z","date":"2018-03-15","kind":"disposition_to_issuer","acquired":false,"shares":10371,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"One-third of the phantom units subject to the original award agreement vested on March 15, 2018, with the remaining phantom units subject to vesting on the second and third anniversaries of the March 15, 2017 grant date, subject to continued employment. The Reporting Person received DERs for each phantom unit, providing for payment on the vesting date of a lump sum of cash equal to the accrued distributions from and after the grant date of the phantom units."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The phantom units and associated DERs do not expire.  The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer."}],"balance_after":0,"derivative":{"exercise_price":2.3,"underlying":"Common Units","underlying_shares":10371},"source":{"system":"sec-edgar","filing":"0001209191-18-020313","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1235281/000120919118020313/doc4.xml","form_type":"4"}},{"id":3992079,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":68200,"kind":"person","name":"MALLETT LEONARD WAYNE","position":1,"cik":"0001235281","reported_name":"MALLETT LEONARD WAYNE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See remarks below."}}],"security":"Phantom Units","published_at":"2018-03-16T17:41:37.000Z","date":"2018-03-15","kind":"exercise","acquired":false,"shares":10371,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each phantom unit is the economic equivalent of one common unit."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"One-third of the phantom units subject to the original award agreement vested on March 15, 2018, with the remaining phantom units subject to vesting on the second and third anniversaries of the March 15, 2017 grant date, subject to continued employment. The Reporting Person received DERs for each phantom unit, providing for payment on the vesting date of a lump sum of cash equal to the accrued distributions from and after the grant date of the phantom units."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The phantom units and associated DERs do not expire.  The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer."}],"balance_after":20740,"derivative":{"underlying":"Common Units","underlying_shares":10371},"source":{"system":"sec-edgar","filing":"0001209191-18-020313","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1235281/000120919118020313/doc4.xml","form_type":"4"}},{"id":3992078,"issuer":{"id":88532,"kind":"organization","name":"Summit Midstream Partners, LP","symbol":"SMLP"},"owners":[{"id":68200,"kind":"person","name":"MALLETT LEONARD WAYNE","position":1,"cik":"0001235281","reported_name":"MALLETT LEONARD WAYNE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See remarks below."}}],"security":"Distribution Equivalent Rights","published_at":"2018-03-16T17:41:37.000Z","date":"2018-03-15","kind":"disposition_to_issuer","acquired":false,"shares":13495,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"One-third of the phantom units subject to the original award agreement vested on March 15, 2018, with the final one-third of the phantom units subject to vesting on the third anniversary of the March 15, 2016 grant date, subject to continued employment. The Reporting Person received distribution equivalent rights (DERs) for each phantom unit, providing for payment on the vesting date of a lump sum of cash equal to the accrued distributions from and after the grant date of the phantom units."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The phantom units and associated DERs do not expire.  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