NEW YORK–(BUSINESS WIRE)–Kroll Bond Rating Agency (KBRA) assigns preliminary ratings to 19 classes of notes from Freddie Mac’s Structured Agency Credit Risk (STACR) Debt Notes, Series 2017-DNA1 (STACR 2017-DNA1), a credit risk sharing transaction with a total note offering of $742,000,000. STACR 2017-DNA1 represents Freddie Mac’s 26th risk transfer deal under the STACR shelf, as well as the eighth in its actual loss ‘DNA’ series that features loans with loan-to-value (LTV) ratios greater than