X0306
4
2017-10-16
0
0001402057
CDW Corp
CDW
0001270206
CORLEY CHRISTINA M
C/O CDW CORPORATION
200 N. MILWAUKEE AVE
VERNON HILLS
IL
60061
0
1
0
0
See Remarks
Common Stock, par value $0.01
2017-10-16
4
S
0
4000
67.95
D
51842.76
D
The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 24, 2017.
Senior Vice President- Commercial and International Markets
/s/ Robert J. Welyki, Attorney-in-Fact
2017-10-17