Sec Form 4 Filing - MISIAK DAVID G @ PATTERSON COMPANIES, INC. - 2018-04-30

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 MISIAK DAVID G 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, Patterson Dental (Last) (First) (Middle) 1031 MENDOTA HEIGHTS ROAD 3. Date of Earliest Transaction (MM/DD/YY) 04/30/2018 (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 04/30/2018 F( 1 ) 197 D $ 23.28 12,665 ( 2 ) ( 3 ) ( 4 ) D Common Stock 15,058 ( 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 Option ( 6 ) $ 47.51 07/01/2020 07/01/2027 Common Stock 13,935 13,935 D Employee Stock Option ( 7 ) $ 56.66 ( 8 ) 07/01/2025 Common Stock 50,000 50,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other MISIAK DAVID G 1031 MENDOTA HEIGHTS ROAD ST. PAUL, MN55120 President, Patterson Dental Signatures Les B. Korsh, by Power of Attorney 05/01/2018 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 award granted in 2013. ( 2 )Includes 2,803 shares of restricted stock awarded in the years 2014 and 2015 to Reporting Person, which vest, contingent upon continued employment as follows: 660 shares vest on 4/29/2018, 1,148 shares vest on 7/1/2018, 1,147 shares on 7/1/2019 and 508 shares vest on 7/1/2020. ( 3 )Includes 5,378 Restricted Stock Units ("RSUs") awarded on 7/1/2016, 11/1/2016 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. ( 4 )Includes 1,367 shares acquired pursuant to Reporting Person's participation in the Patterson Companies, Inc. Capital Accumulation Plan in the years 2016 and 2017 and remain subject to the terms of such Plan. ( 5 )Represents shares of common stock indirectly held by the Reporting 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 option granted pursuant to the Patterson Companies, Inc. 2012 Equity Incentive Plan on 7/1/2015. ( 8 )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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* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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