Names:	Deerfield Capital L.P., Deerfield Special Situations Fund, L.P., Deerfield Management Company, L.P., Deerfield Special Situations Fund International Limited, Deerfield Partners, L.P., Deerfield International Limited
Address:	Deerfield Capital, L.P., Deerfield Special Situations Fund, L.P., Deerfield Partners L.P. and Deerfield Management Company, L.P.: 780 Third Avenue, 37th Floor New York, NY  10017
	Deerfield Special Situations Fund International Limited and Deerfield International Limited: c/o Citi Hedge Fund Services (B.V.I.) Ltd. Bison Court, P.O. Box 3460 Road Town, Tortola, D8, British Virgin Islands
Designated Filer:	James E. Flynn
Issuer and Ticker Symbol:	Rigel Pharmaceuticals, Inc. (RIGL)
Date of Earliest Transaction Reported:	May 26, 2011