Dec. 12, 2019 2019-XM0726 San Francisco International Airport's (San Francisco City&County Airport Commission) series 2019E second series revenue bonds (alternative-minimum tax) Bank of America N.A. Mesirow Financial Inc. BofA Securities Inc. Bank of America N.A. S&P Global Ratings assigned the above-mentioned ratings to the custody and residual receipts (collectively the receipts), reflecting its opinion of the likelihood the trust, as custody receipt holder, will have sufficient assets to pay timely interest and full principal when due on the receipts. Trust assets include all distributions of principal; interest; and premiums, if any, from the custody receipts and liquidity facility, which is in place to support tender payments on floaters. The long-term rating on the custody receipts jointly reflects, assuming