Patterson Companies Inc.  (PDCO)
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Patterson Companies Inc.

Officers & Directors

Scott P. Anderson became our Chief Executive Officer in April 2010 and was appointed to our Board of Directors in June 2010. Mr. Anderson had held the position of President of Patterson Dental Supply, Inc., since June 2006 and, prior to that, the positions of Vice President, Sales and Vice President, Marketing of Patterson Dental Supply, Inc. Mr. Anderson joined Patterson in 1993 and currently serves on the board of directors of the Dental Trade Alliance, the trade association of dental manufacturers, distributors and laboratories. Mr. Anderson has been a director of C.H. Robinson since 2012.

Peter L. Frechette currently serves as the Chairman of the Board and has held that position since May of 1985. He served as Chief Executive Officer from September 1982 through May 2005 and as President from September 1982 to April 2003. He has been one of our directors since March 1983. Prior to joining our Company, Mr. Frechette was employed by American Hospital Supply Corporation for 18 years, the last seven of which he served as President of its Scientific Products Division.

R. Stephen Armstrong was elected Executive Vice President, Chief Financial Officer and Treasurer of Patterson effective July 1999. Before joining Patterson, Mr. Armstrong had been an Assurance Partner with Ernst & Young LLP. Ernst & Young LLP is currently Patterson’s independent registered public accounting firm. Mr. Armstrong has been a director of Delphax Technologies, Inc. since 2000.

Ranell M. Hamm became Chief Information Officer, in April 2011. Prior to joining us, Ms. Hamm was Senior Director of Clinical Information Delivery for UnitedHealth Group. Prior to UnitedHealth Group she was employed by Assurant, Inc., where she was Senior Vice President of Finance Systems & Services, IT Security; Chief Information Officer/ Chief Operating Officer of Shared Business Services; and Senior Vice President of Shared Services Organization.

Jerome E. Thygesen became Vice President, Human Resources, in March 2006. Prior to joining Patterson, Mr. Thygesen was Vice President, Organizational Development for Fairview Red Wing Health Services from September 2001 to February 2006, and Director of Human Resources for Red Wing Shoe Company from March 1987 to June 2001.

Paul A. Guggenheim became President of Patterson Dental Supply, Inc. in April 2010. Mr. Guggenheim previously was the southwest region manager of Patterson Dental. Mr. Guggenheim joined us in 2000 following our acquisition of Guggenheim Brothers Dental Supply. Mr. Guggenheim has worked in the dental industry for over 25 years and is former chairman of the American Dental Trade Association (now the Dental Trade Alliance). He also is past president of the Dental Dealers of America and former chairman of the American Dental Cooperative.

George L. Henriques was named President of Webster Veterinary Supply, Inc. in August 2006. Mr. Henriques previously served as chief information officer of Webster since 2000 and is former chairman and board member of the American Veterinary Distributors Association.

David P. Sproat was named President of Patterson Medical Supply, Inc. in September 2005. Mr. Sproat joined our Company in 1997 and has served in various sales and marketing capacities, including Vice President, Sales of Patterson Dental Supply, Inc. from June 2004 through September 2005.

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