MEDIVATION INC

CUSIP: 58501N101 Class: COM

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's Holding History (CIK: 0001644956)

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

Q4 2015
Shares 3,130,798 Value ($000) $151,343 Avg Close — Range —
Q3 2015
Shares 3,195,191 Value ($000) $135,796 Avg Close — Range —