SILVER WHEATON CORP

CUSIP: 828336107 Class: COM

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

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

Q1 2017
Shares 459,420 Value ($000) $9,574 Avg Close — Range —
Q4 2016
Shares 500,891 Value ($000) $9,677 Avg Close — Range —
Q3 2016
Shares 488,573 Value ($000) $13,206 Avg Close — Range —
Q2 2016
Shares 1,031,346 Value ($000) $24,268 Avg Close — Range —