LONDON (Standard&Poor's) Feb. 12, 2010--Standard&Poor's Ratings Services said today that it assigned its 'A+' long-term senior debt ratings to four separate notes (see Ratings List below) issued by Swiss Re Treasury (US) Corp. (not rated) and guaranteed by Swiss Reinsurance Company Ltd. (Swiss Re; A+/Stable/A-1). The notes of varying amounts and maturities were issued under Swiss Re's $10 billion Euro Medium-Term Note (EMTN) program, rated 'A+/A-1', during 2009. RATINGS LIST New Rating Swiss Re Treasury (US) Corp. CHF300 mil 2.75% nts ser 144 due 12/17/2010* A+ EUR1 bil 6% nts ser 142 due 05/18/2012* A+ USD750 mil 4.125% nts ser 148 due 09/17/2013* A+ EUR600 mil 7% nts ser 143 due 05/19/2014* A+ *Guaranteed by Swiss