X0306 4 2021-07-01 0 0000891024 PATTERSON COMPANIES, INC. PDCO 0001341608 Zurbay Donald 1031 MENDOTA HEIGHTS ST. PAUL MN 55120 0 1 0 0 Chief Financial Officer Common Stock 2021-07-01 4 F 0 892 30.77 D 95005 D Common Stock 2021-07-01 4 A 0 9750 30.77 A 104755 D Common Stock 1061 I By ESOP Employee Stock Options 30.77 2021-07-01 4 A 0 37831 30.77 A 2031-07-01 Common Stock 37831 37831 D Employee Stock Options 23.57 2030-07-14 Common Stock 57819 57819 D Employee Stock Options 22.25 2029-07-01 Common Stock 78829 78829 D Employee Stock Options 22.48 2021-07-01 2028-07-01 Common Stock 33363 33363 D Employee Stock Options 22.67 2028-06-29 Common Stock 99250 99250 D Represents shares of common stock withheld for payment of taxes incurred upon the lapse of restrictions on restricted stock units ("RSUs") issued purusant to the Patterson Companies, Inc. Amended and Restated 2015 Omnibus Incentive Plan ("Plan"). Includes an aggregate of 27,384 RSUs awarded on 7/1/2018, 7/1/2019 and 7/14/2020 to Reporting Person pursuant to the Plan. The RSUs vest contingent upon continued employment as follows: 14,022 units vest 7/1/2022, 2,225 units vest 7/1/2023 and 11,137 units vest 7/14/2023. Includes 33,625 RSU equivalents attributable to the July 1, 2020 determination by the Compensation Committee that the performance criteria for the period of April 27, 2019 through April 25, 2020 applicable to non-derivative performance units issued on July 1, 2019 had been satisfied. Subject to continued employment of the Reporting Person through July 1, 2022, the RSU equivalents will automatically convert into shares of common stock. Represents RSUs awarded on 7/1/2021 to Reporting Person pursuant to the Plan. The RSUs awarded vest, assuming continued employment, 33.3% on 7/1/2022, 33.3% on 7/1/2023 and 33.4% on 7/1/2024. Represents shares of common stock indirectly held by the Reporting Person's Employee Stock Ownership Plan ("ESOP") account through May 21, 2021. Stock options granted pursuant to the Plan on 7/1/2021. Options are exercisable as follows: 33.3% on 7/1/2022, 33.3% on 7/1/2023 and 33.4% on 7/1/2024. Stock options granted pursuant to the Plan on 7/14/2020. Options are exercisable as follows: 33.3% on 7/14/2021, 33.3% on 7/14/2022 and 33.4% on 7/14/2023. Stock options granted pursuant to the Plan on 7/1/2019. Options are exercisable as follows: 33.3% on 7/1/2020, 33.3% on 7/1/2021 and 33.4% on 7/1/2022. Stock options granted pursuant to the Plan on 7/1/2018. Stock options granted as an inducement award granted outside the Plan on 6/29/2018. The stock options granted would vest pro-rata over the course of 3 years, with one-third of the shares vesting on 6/29/2019, one-third vesting on 6/29/2020, and the remaining one-third vesting 6/29/2021, in all cases subject to continued employments. Les B. Korsh, by Power of Attorney 2021-07-06