Ownership Submission
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 *
KORSH LES B
   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)
VP, General Counsel
(Last)
(First)
(Middle)
1031 MENDOTA HEIGHTS ROAD		 3. Date of Earliest Transaction (Month/Day/Year)
12/31/2017
(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 12/31/2017   A(1)   1,882 A $ 27.1 11,752 (2) (3) (4) D  
Common Stock               324 (5) I By ESOP

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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 Option (6) $ 47.51             07/01/2020 07/01/2027 Common Stock 11,845   11,845 D  
Employee Stock Options (7) $ 48.47             07/01/2019 07/01/2026 Common Stock 10,379   10,379 D  
Employee Stock Options (8) $ 56.66               (9) 07/01/2025 Common Stock 25,000   25,000 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
KORSH LES B
1031 MENDOTA HEIGHTS ROAD
ST. PAUL, MN 55120		       VP, General Counsel  

Signatures

 Les B. Korsh   01/03/2018
**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. Capital Accumulation Plan.
(2) Includes 2,281 shares of restricted stock awarded in the years 2014 through 2015 to Reporting Person, which vest, contingent upon continued employment as follows: 887 shares vest on 7/1/2018, 886 shares vest on 7/1/2019 and 508 shares vest on 7/1/2020.
(3) Includes 1,039 shares acquired pursuant to Reporting Person's participation in the Patterson Companies, Inc. Capital Accumulation Plan in the year 2016 and remain subject to the terms of such Plan.
(4) Includes 3,640 Restricted Stock Units ("RSUs") awarded on 7/1/2016 and 7/1/2017 to Reporting Person pursuant to the Patterson Companies, Inc. 2015 Omnibus Incentive Plan. Each RSU represents a right, contingent upon continued employment, to receive one share of common stock. The RSUs vest in 5 equal annual installments commencing on the one year anniversary of the date of grant and each anniversary thereafter.
(5) Represents shares of common stock indirectly held by the Report Person's Employee Stock Ownership Plan (ESOP) account through January 2, 2018.
(6) Stock option granted pursuant to the Patterson Companies, Inc. 2015 Omnibus Incentive Plan on 7/1/2017.
(7) Stock options granted pursuant to the Patterson Companies, Inc. 2015 Omnibus Incentive Plan on 7/1/2016.
(8) Stock options granted pursuant to the Patterson Companies, Inc. Amended and Restated Equity Incentive Plan on 7/1/2015.
(9) 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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