BLUE BUFFALO PET PRODS INC

CUSIP: 09531U102 Class: COM

PRIMECAP MANAGEMENT CO/CA/'s Holding History (CIK: 0000763212)

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

Q1 2018
Shares 426,200 Value ($000) $16,967 Avg Close — Range —
Q4 2017
Shares 453,100 Value ($000) $14,857 Avg Close — Range —
Q3 2017
Shares 460,900 Value ($000) $13,067 Avg Close — Range —
Q2 2017
Shares 547,200 Value ($000) $12,482 Avg Close — Range —
Q1 2017
Shares 548,200 Value ($000) $12,609 Avg Close — Range —
Q4 2016
Shares 627,000 Value ($000) $15,073 Avg Close — Range —
Q3 2016
Shares 627,500 Value ($000) $14,909 Avg Close — Range —
Q2 2016
Shares 805,717 Value ($000) $18,805 Avg Close — Range —
Q1 2016
Shares 982,400 Value ($000) $25,208 Avg Close — Range —
Q4 2015
Shares 946,566 Value ($000) $17,710 Avg Close — Range —
Q3 2015
Shares 699,100 Value ($000) $12,521 Avg Close — Range —