OPTIMER PHARMACEUTICALS INC

CUSIP: 68401H104 Class: CMN

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

Note: Option positions (PUT/CALL) are excluded.

Q3 2013
Shares 600 Value ($000) $8 Avg Close — Range —
Q2 2013
Shares 600 Value ($000) $9 Avg Close — Range —