Data as of 11 / 23 / 2021 1:00 pm ET | Minimum 20 minute delay NYSE:SMLP $ 31.50 0.01 0.03% A VALUE ORIENTED MIDSTREAM ENERGY COMPANY DISCOVER OUR WORLD MOST RECENT NEWS LATEST INVESTOR PRESENTATION 11.18.21 Summit Midstream Partners, LP Announces Commencement of Service on Double E Pipeline 2021 RBC Capital Markets Midstream and Energy Infrastructure Conference DOWNLOAD DOCUMENT 11.04.21 Summit Midstream Partners, LP Reports Third Quarter 2021 Financial and Operating Results VIEW ALL NEWS VIEW ALL RECENT PRESENTATIONS QUICK LINKS ANNUAL REPORT K-1 INFORMATION EARNINGS WEBCAST Houston Office 910 Louisiana Street Suite 4200 Houston, TX 77002 832.413.4770 For Emergencies Call 888.643.7929 © 2013 - 2021 Summit Midstream Powered by WebCreek Technology

| Minimum 20 minute delay NYSE:SMLP DISCOVER OUR WORLD MOST RECENT NEWS LATEST INVESTOR PRESENTATION DOWNLOAD DOCUMENT VIEW ALL NEWS VIEW ALL RECENT PRESENTATIONS QUICK LINKS The Woodlands Office 1790 Hughes Landing Blvd. Suite 500 The Woodlands, TX 77380 832.413.4770 © 2013 - 2021 Summit Midstream Powered by WebCreek Technology