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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1. Name and Address of Reporting Person * SELATI ROBIN P   2. Issuer Name and Ticker or Trading Symbol CDW Corp [CDW] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O MADISON DEARBORN PARTNERS, LLC, 70 W. MADISON STREET, SUITE 4600 3. Date of Earliest Transaction (Month/Day/Year) 06/15/2016 (Street) CHICAGO, IL 60602 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, par value $0.01 06/15/2016   J(1)(2)(3)   3,673 A $ 0 7,353 D   Common Stock, par value $0.01 06/15/2016   J(1)(2)(3)   525 A $ 0 1,051 (3) I By Robin P. Selati Dynasty Trust. See footnote (3)

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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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SELATI ROBIN P C/O MADISON DEARBORN PARTNERS, LLC 70 W. MADISON STREET, SUITE 4600 CHICAGO, IL 60602	X

Signatures

/s/ James S. Rowe, under Power of Attorney		06/16/2016
**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)	On June 15, 2016: (a) Madison Dearborn Capital Partners V-A, L.P. ("MDP A") made a pro rata distribution for no consideration of 2,681,513 shares of common stock, par value $0.01, of CDW Corporation ("Shares"), to Madison Dearborn Partners V-A&C, L.P., its general partner ("MDP V"), and to its limited partners; (b) Madison Dearborn Capital Partners V-C, L.P. ("MDP C") made a pro rata distribution for no consideration of 711,359 Shares to MDP V, its general partner, and to its limited partners; (c) Madison Dearborn Capital Partners V Executive-A, L.P. ("MDP Exec") made a pro rata distribution for no consideration of 26,944 Shares to MDP V, its general partner, and to its limited partners; and (d) MDCP Co-Investor (CDW), L.P. ("MDP Co-Investor") made a pro rata distribution for no consideration of 688,100 Shares to its limited partners. MDP V further distributed on a pro rata basis for no consideration 88,056 Shares to its partners (the "MDP V Distribution").
(2)	In the MDP V Distribution: (i) Mr. Selati received 3,673 Shares and (ii) the Robin P. Selati Dynasty Trust received 525 Shares.
(3)	Mr. Selati's family members are the co-trustees of the Robin P. Selati Dynasty Trust. The indirect acquisition of such Shares by Mr. Selati was exempt under Rule 16a-9 and Rule 16a-13.

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