MEDIDATA SOLUTIONS INC

CUSIP: 58471A105 Class: COM

NATIXIS ADVISORS, L.P.'s Holding History (CIK: 0001018331)

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

Q4 2013
Shares 4,254 Value ($000) $257 Avg Close — Range —
Q3 2013
Shares 2,167 Value ($000) $215 Avg Close — Range —