X0202 3 2007-02-08 0 0001142576 OPTIMER PHARMACEUTICALS INC OPTR 0001380521 Gorbach MD Sherwood C/O OPTIMER PHARMACEUTICALS, INC. 10110 SORRENTO VALLEY RD., SUITE C SAN DIEGO, CA 92121 0 1 0 0 Senior VP, CMO Common Stock 25238 D Stock Option (right to buy) 1.08 2013-07-25 Common Stock 1730 D Stock Option (right to buy) 1.08 2015-12-02 Common Stock 18461 D Stock Option (right to buy) 1.08 2015-12-02 Common Stock 3029 D 25% of the initial grant of 13,845 options vest on July 1, 2004 and 1/48 of the initial grant of 13,845 options vest each month thereafter. The initial grant of 27,691 options vest 1/48 per month with a vesting commencement date of October 1, 2005. 25% of the initial grant of 6,922 options vest on October 1, 2005 and 1/36 of the remaining options vest each month thereafter. Exhibit 24 - Power of Attorney /s/ Sherwood L. Gorbach 2007-02-04