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 OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

WALCHIRK MARK S
2. Issuer Name and Ticker or Trading Symbol

PATTERSON COMPANIES, INC. [ PDCO ]
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__X__ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
President & CEO
(Last)          (First)          (Middle)

1031 MENDOTA HEIGHTS ROAD
3. Date of Earliest Transaction (MM/DD/YYYY)

1/4/2021
(Street)

ST. PAUL, MN 55120
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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 1/4/2021  F(1)  2017 D$29.14 320686 (2)(3)(4)D  
Common Stock         819 (5)I By ESOP 

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security3. Trans. Date3A. Deemed Execution Date, if any4. Trans. Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
6. Date Exercisable and Expiration Date7. Title and Amount of Securities Underlying Derivative Security
(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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Employee Stock Options (6)$23.57            (7)7/14/2030 Common Stock 178965  178965 D  
Employee Stock Options (8)$22.25            (9)7/1/2029 Common Stock 243994  243994 D  
Employee Stock Options (10)$22.48           7/1/2021 7/1/2028 Common Stock 99956  99956 D  
Employee Stock Options (11)$35.41           12/1/2020 12/1/2027 Common Stock 52764  52764 D  

Explanation of Responses:
(1) Shares withheld for taxes incurred upon the lapse of restrictions on restricted stock issued pursuant to the Patterson Companies, Inc. Capital Accumulation Plan.
(2) Includes 96,017 RSUs awarded on 12/1/2017, 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: 7,126 units vest 7/1/2021, 1,824 units vest 12/1/2021, 43,644 units vest 7/1/2022, 1,824 units vest 12/1/2022, 7,127 units vest 7/1/2023 and 34,472 units vest 7/14/2023.
(3) Includes 60,330 RSU equivalents attributable to the June 11, 2019 determination by the Compensation Committee that the performance criteria for the period of April 29, 2018 through April 27, 2019 applicable to non-derivative performance units issued on August 7, 2018 had been satisfied. Subject to continued employment of the Reporting Person through April 24, 2021, the RSU equivalents will automatically convert into shares of common stock.
(4) Includes 104,074 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 restricted stock unit equivalents will automatically convert into shares of common stock.
(5) Represents shares of common stock indirectly help by the Reporting Person's Employee Stock Ownership Plan ("ESOP") account through April 25, 2020.
(6) Stock options granted pursuant to the Plan on 7/14/2020.
(7) Options are exercisable as follows: 33.3% on 7/14/2021, 33.3% on 7/14/2022 and 33.4% on 7/14/2023.
(8) Stock options granted pursuant to the Plan on 7/1/2019.
(9) Options are exercisable as follows: 33.3% on 7/1/2020, 33.3% on 7/1/2021 and 33.4% on 7/1/2022.
(10) Stock options granted pursuant to the Plan on 7/1/2018.
(11) Stock options granted pursuant to the Plan on 12/1/2017.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
WALCHIRK MARK S
1031 MENDOTA HEIGHTS ROAD
ST. PAUL, MN 55120
X
President & CEO

Signatures
Les B. Korsh, by Power of Attorney1/5/2021
**Signature of Reporting PersonDate

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