...August 5, 2020 - Summit Midstream Partners L.P. (SMLP) has completed its distressed preferred equity exchange and senior unsecured distressed debt repurchases. - As a result, we are raising our issuer credit rating on SMLP to '###' from '##'. The outlook is negative. - We are raising our issue-level rating on Summit Midstream Holdings LLC's senior unsecured debt to '###' from 'D', reflecting our '4' recovery rating. The '4' recovery rating reflects our expectation of average (30%-50%; rounded estimate: 30%) recovery in the event of a default. - We are also raising our rating on SMLP's preferred stock to 'C' from 'D', two notches below our issuer credit rating on SMLP to reflect its subordination within the capital structure, and one additional notch for deferability. - We are affirming our '###' issuer credit rating on Summit Midstream Partners Holdings LLC (SMP Holdings). The outlook is negative. - SMP Holdings' senior secured debt issue-level rating remains at '##', reflecting our '6'...