Sec Form 4 Filing - ROGAN TIMOTHY E @ PATTERSON COMPANIES, INC. - 2021-08-01

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person ROGAN TIMOTHY E 2. Issuer Name and Ticker or Trading Symbol PATTERSON COMPANIES, INC. [ PDCO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) President - Dental (Last) (First) (Middle) 1031 MENDOTA HEIGHTS ROAD 3. Date of Earliest Transaction (MM/DD/YY) 08/01/2021 (Street) ST. PAUL, MN55120 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 08/01/2021 F( 1 ) 367 D $ 31.13 45,028( 2 ) D Common Stock 02/18/2022 F( 3 ) 2,275 D $ 29.69 42,753( 4 ) D Common Stock 16,908( 5 ) I By ESOP

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Employee Stock Options( 6 ) $ 29.91 ( 7 ) 07/19/2031 Common Stock 9,142 9,142 D Employee Stock Options( 8 ) $ 30.77 ( 9 ) 07/01/2031 Common Stock 7,093 7,093 D Employee Stock Options( 10 ) $ 22.25 ( 11 ) 07/01/2029 Common Stock 33,784 33,784 D Employee Stock Options( 12 ) $ 24.21 ( 13 ) 08/01/2028 Common Stock 13,941 13,941 D Employee Stock Options( 14 ) $ 56.66 ( 15 ) 07/01/2025 Common Stock 40,000 40,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other ROGAN TIMOTHY E 1031 MENDOTA HEIGHTS ROAD ST. PAUL, MN55120 President - Dental Signatures Les B. Korsh, by Power of Attorney 02/22/2022 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents shares of common stock withheld for payment of taxes incurred upon the lapse of restrictions on restricted stock units ("RSUs") issued pursuant to the Patterson Companies, Inc. Amended and Restated 2015 Omnibus Incentive Plan ("Plan"). ( 2 )Includes an aggregate of 21,835 RSUs awarded in the years 2017 through 2021 to Reporting Person pursuant to the Plan. The RSUs vest contingent upon continued employment as follows: 9,183 units vest on 2/18/2022, 2,769 units vest on 7/1/2022, 3,181 units vest on 7/14/2022, 765 units vest on 7/19/2022, 609 units vest on 7/1/2023, 3,184 units vest on 7/14/2023, 765 units vest on 7/19/2023, 610 units vest on 7/1/2024 and 769 units vest on 7/19/2024. ( 3 )Represents shares of common stock withheld for payment of taxes incurred upon the lapse of restrictions on RSUs issued pursuant to the Plan. ( 4 )Includes an aggregate of 12,652 RSUs awarded in the years 2017 through 2021 to Reporting Person pursuant to the Plan. The RSUs vest contingent upon continued employment as follows: 2,769 units vest on 7/1/2022, 3,181 units vest on 7/14/2022, 765 units vest on 7/19/2022, 609 units vest on 7/1/2023, 3,184 units vest on 7/14/2023, 765 units vest on 7/19/2023, 610 units vest on 7/1/2024 and 769 units vest on 7/19/2024. ( 5 )Represents shares of common stock indirectly held by the Report Person's Employee Stock Ownership Plan (ESOP) account through May 21, 2021. ( 6 )Stock options granted pursuant to the Plan on 7/19/2021. ( 7 )Options are exercisable as follows: 33.3% on 7/19/2022, 33.3% on 7/19/2023 and 33.4% on 7/19/2024. ( 8 )Stock options granted pursuant to the Plan on 7/1/2021. ( 9 )Options are exercisable as follows: 33.3% on 7/1/2022, 33.3% on 7/1/2023 and 33.4% on 7/1/2024. ( 10 )Stock options granted pursuant to the Plan on 7/1/2019. ( 11 )Options are exercisable as follows: 33.3% on 7/1/2020, 33.3% on 7/1/2021 and 33.4% on 7/1/2022. ( 12 )Stock options granted pursuant to the Plan on 8/1/2018. ( 13 )Options are exercisable as follows: 33.3% on 8/1/2019, 33.3% on 8/1/2020 and 33.4% on 8/1/2021. ( 14 )Stock options granted pursuant to the Patterson Companies, Inc. Amended and Restated Equity Incentive Plan on 7/1/2015. ( 15 )Options are exercisable as follows: 25% on 7/1/2018, 25% on 7/1/2019 and 50% on 7/1/2020.

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