MEDIDATA SOLUTIONS INC

CUSIP: 58471A105 Class: COM

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q4 2018
Shares 33 Value ($000) $2 Avg Close — Range —
Q3 2018
Shares 3,384 Value ($000) $248 Avg Close — Range —
Q4 2017
Shares 8,568 Value ($000) $543 Avg Close — Range —
Q4 2016
Shares 46 Value ($000) $2 Avg Close — Range —
Q3 2016
Shares 534 Value ($000) $30 Avg Close — Range —
Q2 2016
Shares 3,595 Value ($000) $168 Avg Close — Range —
Q4 2015
Shares 1,095 Value ($000) $54 Avg Close — Range —
Q2 2015
Shares 13 Value ($000) $1 Avg Close — Range —
Q1 2015
Shares 380 Value ($000) $19 Avg Close — Range —
Q4 2014
Shares 2,553 Value ($000) $122 Avg Close — Range —
Q3 2014
Shares 3,308 Value ($000) $147 Avg Close — Range —