BLUE BUFFALO PET PRODS INC

CUSIP: 09531U102 Class: COM

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

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

Q1 2017
Shares 2,446,262 Value ($000) $56,264 Avg Close — Range —
Q4 2016
Shares 2,233,215 Value ($000) $53,686 Avg Close — Range —