NEW YORK–(BUSINESS WIRE)–Kroll Bond Rating Agency (KBRA) assigns preliminary ratings to fifty-four classes of mortgage pass-through certificates from Sequoia Mortgage Trust 2018-4 (SEMT 2018-4), a prime RMBS transaction. SEMT 2018-4 contains both prime jumbo (79.5%) and high-balance conforming (20.5%) collateral to borrowers with prime attributes. The SEMT 2018-4 mortgage pool is composed of 493 first-lien mortgage loans with an aggregate principal balance of $338,667,575 as of the cut-off da
