MEDIDATA SOLUTIONS INC

CUSIP: 58471A105 Class: COM

GILDER GAGNON HOWE & CO LLC's Holding History (CIK: 0000902464)

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

Q2 2014
Shares 37,780 Value ($000) $1,617 Avg Close — Range —
Q1 2014
Shares 862,740 Value ($000) $46,881 Avg Close — Range —
Q4 2013
Shares 1,180,068 Value ($000) $71,396 Avg Close — Range —
Q3 2013
Shares 625,015 Value ($000) $61,833 Avg Close — Range —
Q2 2013
Shares 634,840 Value ($000) $49,168,358 Avg Close — Range —