Summit Midstream Partners, LP (NYSE: SMLP) (the "Partnership") announced today updates regarding its offer to exchange (the "Exchange Offer") any and all of its 9.50% Series A Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units (the "Series A Preferred Units") tendered in the Exchange Offer for newly issued common units representing limited partner interests in the Partnership (the "Common Units"). As of the close of business on January 6, 2022, based on information provided by American Stock Transfer & Trust Company, LLC, the depositary of the Exchange Offer, and including the Series A Preferred Units covered by the tender and support agreement, 46,203 Series A Preferred Units had been properly tendered (and not validly withdrawn) or committed for exchange by several holders of the Series A Preferred Units, which represents approximately 32.2% of the total Series A Preferred Units outstanding. As previously announced, the Exchange Offer is scheduled to expire at 11:59 p.m., New York City time, on January 12, 2022, unless the Partnership extends the Exchange Offer or terminates it earlier.