...January 13, 2021 - Summit Midstream Partners L.P. (SMLP) completed several distressed transactions in the second half of 2020, and S&P Global Ratings is now reassessing credit quality of the partnership. - We are raising our issuer credit rating on SMLP to '###+' from '##' (selective default). The outlook is negative. - We are raising our rating on Summit Midstream Holdings LLC's senior unsecured debt to '###+' from 'D', reflecting our '3' recovery rating. The recovery rating reflects our expectation of meaningful (50%-70%; rounded estimate: 50%) recovery in the event of a default. - We are also raising our rating on SMLP's preferred stock to '##' from 'D'. The ratings transition to '##' highlights the downside risk associated with the security's ongoing distribution deferral. - The negative outlook reflects the heightened refinancing risk associated with the revolving credit facility (RCF)(unrated) and the 5.5% senior unsecured notes, both maturing in 2022. We forecast the partnership...