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 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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(Print or Type Responses)

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 (Month/Day/Year) 03/29/2019 (Street) ST. PAUL, MN 55120 4. If Amendment, Date Original Filed(Month/Day/Year) 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 03/29/2019   A(1)   373 A $ 17.0765 98,171 (2) (3) D

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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 (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

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 (Month/Day/Year)

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 (4)

$ 22.48

07/01/2021

07/01/2028

Common Stock

99,956

99,956

D

Employee Stock Options (5)

$ 35.41

12/01/2020

12/01/2027

Common Stock

52,764

52,764

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
WALCHIRK MARK S 1031 MENDOTA HEIGHTS ROAD ST. PAUL, MN 55120	X		President & CEO

Signatures

Les B. Korsh, by Power of Attorney		04/02/2019
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Shares acquired by Reporting Person pursuant to the Patterson Companies, Inc. Employee Stock Purchase Plan.
(2)	Includes 42,928 Restricted Stock Units (RSUs") awarded on 12/1/2017 and 7/1/2018 to Reporting Person pursuant to the Patterson Companies, Inc. Amended & Restated 2015 Incentive Plan ("Plan"). The RSUs vest contingent upon continued employment as follows: 7,126 units in aggregate vest on 7/1/2019, 1,824 units in aggregate vest on 12/1/2019, 7,126 units in aggregate vest on 7/1/2020, 1,824 units in aggregate vest on 12/1/2020, 7,126 units in aggregate vest on 7/1/2021, 1,824 units in aggregate vest on 12/1/2021, 7,127 units in aggregate vest on 7/1/2022, 1,824 units in aggregate vest on 12/1/2022 and 7,127 units in aggregate vest on 7/1/2023.
(3)	Includes 28,241 RSUs granted to Reporting Person on 12/1/2017 as an inducement award granted outside the Plan. The RSUs will vest, assuming continued employment on 12/1/2019.
(4)	Stock options granted pursuant to the Plan on 7/1/2018.
(5)	Stock options granted pursuant to the Plan on 12/1/2017.

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