Sec Form 4 Filing - KORSH LES B @ PATTERSON COMPANIES, INC. - 2017-07-03

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 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 (MM/DD/YY) 07/03/2017 (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 07/03/2017 F( 1 )( 2 ) 530 D $ 47.51 7,634 ( 3 ) ( 4 ) ( 5 ) D Common Stock 07/03/2017 A( 6 ) 2,236 A $ 47.51 9,870 ( 3 ) ( 4 ) ( 5 ) D Common Stock 283 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 $ 47.51 07/03/2017 A( 7 ) 11,845 07/01/2020 07/01/2027 Common Stock 11,845 $ 47.51 11,845 D Employee Stock Options ( 8 ) $ 48.47 07/01/2019 07/01/2026 Common Stock 10,379 10,379 D Employee Stock Options ( 9 ) $ 56.66 ( 10 ) 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, MN55120 VP, General Counsel Signatures Les B. Korsh 07/06/2017 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 awards granted in 2014 and 2015 pursuant to the Patterson Companies, Inc. Equity Incentive Plan. ( 2 )Represents shares of common stock withheld for payment of taxes incurred upon the lapse of restrictions on restricted stock units issued pursuant to the Patterson Companies, Inc. 2015 Omnibus Incentive Plan. ( 3 )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. ( 4 )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. ( 5 )Includes 1,404 Restricted Stock Units ("RSUs") awarded on 7/1/2016 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 award vests as follows: 351 shares vest each year 7/1/2018 through 7/1/2021. ( 6 )Represents RSU's awarded on 7/1/2017 to Reporting Person pursuant to the Patterson Companies, Inc. 2015 Omnibus Incentive Plan. The award vests in 5 equal annual installments commencing on the one year anniversary of the date of grant and each anniversary thereafter. ( 7 )Stock option granted pursuant to the Patterson Companies, Inc. 2015 Omnibus Incentive Plan on 7/1/2017. ( 8 )Stock options granted pursuant to the Patterson Companies, Inc. 2015 Omnibus Incentive Plan on 7/1/2016. ( 9 )Stock options granted pursuant to the Patterson Companies, Inc. Amended and Restated Equity Incentive Plan on 7/1/2015. ( 10 )Options are exercisable as follows: 25% on 7/1/2018, 25% on 7/1/2019 and 50% on 7/1/2020.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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