As of the date of this proxy statement, all Directors are either meeting, or are on track to meet, the Guidelines.

As of the date of this proxy statement, all Directors either meet, or are on track to meet, the Guidelines.

Patterson Chairman, President and Chief Executive Officer March 2017 10 +12 +30 +60 +81 +93 DATE VALUE AND GROWTH We continue to generate value for our customers and shareholders, while having achieved our seventh consecutive year of adjusted EPS growth. 2020 PLATINUM VISION—OUR TRANSFORMATION CONTINUES… Our track record of growth has been excellent, and we’re aspiring to even greater heights with our 2020 Platinum Vision. Our filings are available to the public at the SEC’s website at http://www.sec.gov.

As of the date of this proxy statement, all Directors either meet, or are viewed by us as on track to meet, the Guidelines. Adjusted EPS versus Compensation Actually Paid • We believe the foregoing graph shows that our Named Executive Officer compensation has either tracked or, in the case of 2022, significantly lagged our performance as compared to Adjusted EPS over the Covered Years.

Patterson President and Chief Executive Officer March 17, 2016 5 DATE PROOF OF PERFORMANCE Our transformation is clearly evident in our specialty operating income mix shift, a key driver in six consecutive years of adjusted EPS growth. 2020 PLATINUM VISION—OUR TRANSFORMATION CONTINUES… Our track record of growth has been excellent, and we’re aspiring to even greater heights with our 2020 Platinum Vision. Our filings are available to the public at the SEC’s website at http://www.sec.gov.

As we produce our materials we recognize and embrace our responsibility to the planet, and we monitor several metrics to track our performance. The reports, proxy statements and other information we file are available to the public at the SEC’s website at http://www.sec.gov.

As of the date of this proxy statement, all Directors are either meeting, or are on track to meet, the Guidelines.

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Our filings are available to the public at the SEC’s website at http://www.sec.gov.

Our filings are available to the public at the SEC’s website at http://www.sec.gov.