MEDIDATA SOLUTIONS INC

CUSIP: 58471A105 Class: COM

Robeco Institutional Asset Management B.V.'s Holding History (CIK: 0001418773)

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

Q1 2014
Shares 474 Value ($000) $26 Avg Close — Range —
Q4 2013
Shares 474 Value ($000) $29 Avg Close — Range —
Q3 2013
Shares 237 Value ($000) $23 Avg Close — Range —