Type	Name	Date
Underwriting agreement	Underwriting Agreement	02/11/2011
Underwriting agreement	Underwriting Agreement	03/01/2010

Type	Name	Date
Equity incentive plans	Optimer Pharmaceuticals, Inc. 2012 Equity Incentive Plan	05/10/2012
Equity incentive plans	2006 Equity Incentive Plan, as amended	06/10/2011
Equity incentive plans	2006 Equity Incentive Plan, as amended	03/25/2011

Type	Name	Date
Merger agreement	Agreement and Plan of Merger, by and among Optimer Pharmaceuticals, Inc., Cubist Pharmaceuticals, Inc. and PDRS Corporation	08/01/2013