Transaction Details

Footnotes

The price reported is the average weighted price. The shares were sold in multiple transactions at prices ranging from $179.50 to $180.47, inclusive. The reporting person undertakes to provide to the SEC, the Issuer and any security holder, the full information regarding the number of shares and the prices at which the shares were sold. | The price reported is the average weighted price. The shares were sold in multiple transactions at prices ranging from $180.76 to $181.75 , inclusive. The reporting person undertakes to provide to the SEC, the Issuer and any security holder, the full information regarding the number of shares and the prices at which the shares were sold. | The price reported is the average weighted price. The shares were sold in multiple transactions at prices ranging from $181.76 to $182.73 , inclusive. The reporting person undertakes to provide to the SEC, the Issuer and any security holder, the full information regarding the number of shares and the prices at which the shares were sold. | The price reported is the average weighted price. The shares were sold in multiple transactions at prices ranging from $182.81 to $182.87 , inclusive. The reporting person undertakes to provide to the SEC, the Issuer and any security holder, the full information regarding the number of shares and the prices at which the shares were sold. | These shares are indirectly held through a family trust. | 40,917 options were granted of which 1/3 of the shares vested on each of February 28, 2018, 2019 and 2020. The grant was made under the CDW Corporation Long-Term Incentive Plan.