NEW YORK (S&P Global Ratings) Nov. 5, 2026--S&P Global Ratings today assigned its'AA+/A-1+'rating to Big Sky Issuing Trust's $5.325 million series 2026 taxable variable-rate demand notes due Nov. 1, 2076. The rating on the notes reflects our opinion of the credit and liquidity support that the Federal Home Loan Bank of Topeka (FHLB Topeka;'AA+/A-1+') provides in the form of a confirming letter of credit and that Vista Bank (not rated) provides in the form of a fronting letter of credit during the weekly interest rate mode (the rated mode). The'AA+'long-term component of the rating reflects our long-term issuer credit rating on FHLB Topeka, and it addresses our expectation for full and timely interest and
