X0306 4 2016-07-05 0 0001609989 Blue Buffalo Pet Products, Inc. BUFF 0001648581 Bishop Family Limited Partnership 321 BROADWAY SARATOGA SPRINGS NY 12866 1 0 1 0 0001648580 William W. Bishop Children's Spray Trust C/O STEPHEN J. SAFT, WITHERS BERGMAN LLP 660 STEAMBOAT ROAD GREENWICH CT 06830 1 0 1 0 Common Stock 2016-07-05 4 S 0 2085452 21.285 D 13885790 D This amount represents the $22.00 public offering price per share of common stock of the Issuer, less the underwriting discount of $0.715 per share. Reflects shares held directly by The Bishop Family Limited Partnership (the "Family LP"). The general partner of Family LP is The William W. Bishop Children's Spray Trust (the "General Partner"). The General Partner disclaims beneficial ownership of the securities reported herein, except to the extent of its pecuniary interest therein. The Reporting Persons may be deemed to be directors by deputization by virtue of the Family LP's right to appoint a director to the board of directors of the Issuer. THE BISHOP FAMILY LIMITED PARTNERSHIP, By: The William W. Bishop Children's Spray Trust, as general partner, By: /s/ Stephen J. Saft, Name: Stephen J. Saft, Title: Trustee 2016-07-07 THE WILLIAM W. BISHOP CHILDREN'S SPRAY TRUST, By: /s/ Stephen J. Saft, Name: Stephen J. Saft, Title: Trustee 2016-07-07