Cdw

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-07 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: CDW Corp (CDW) CIK: 0001402057 --- Reporting Owner --- Name: CONNELLY ELIZABETH H. CIK: 0001761744 Role: Officer (See Remarks) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock, par value $0.01 Date: 2026-08-07 | Code: M (Exercise of derivative) Shares: +11,795 | Price: $95.57 Total Value: $1,127,248.15 Shares Owned After: 46,010.46 | Ownership: D (Direct) [Transaction #2] Security: Common Stock, par value $0.01 Date: 2026-08-07 | Code: M (Exercise of derivative) Shares: +14,900 | Price: $98.21 Total Value: $1,463,329.00 Shares Owned After: 60,910.46 | Ownership: D (Direct) [Transaction #3] Security: Common Stock, par value $0.01 Date: 2026-08-07 | Code: S (Open market sale) Shares: -26,695 | Price: $137.62 Total Value: $3,673,765.90 Shares Owned After: 34,215.46 | Ownership: D (Direct) Footnotes: [F1] The price reported is the average weighted price. The shares were sold in multiple transactions at prices ranging from $137.345 to $137.978, 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. --- Derivative Transactions --- [Transaction #1] Security: Employee Stock Option (Right to Buy) Date: 2026-08-07 | Code: M (Exercise of derivative) Shares: -11,795 | Price: $0.00 Exercisable: N/A | Expires: 2029-02-25 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F2] 11,795 options were granted of which one third of the shares vested on each of February 25, 2020, 2021, and 2022. The grant was made under the CDW Corporation Long-Term Incentive Plan. [Transaction #2] Security: Employee Stock Option (Right to Buy) Date: 2026-08-07 | Code: M (Exercise of derivative) Shares: -14,900 | Price: $0.00 Exercisable: N/A | Expires: 2030-03-09 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F3] 14,900 options were granted of which one third of the shares vested on each of March 9, 2021, 2022, and 2023. The grant was made under the CDW Corporation Long-Term Incentive Plan. --- Footnotes (Complete Index) --- F1: The price reported is the average weighted price. The shares were sold in multiple transactions at prices ranging from $137.345 to $137.978, 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. F2: 11,795 options were granted of which one third of the shares vested on each of February 25, 2020, 2021, and 2022. The grant was made under the CDW Corporation Long-Term Incentive Plan. F3: 14,900 options were granted of which one third of the shares vested on each of March 9, 2021, 2022, and 2023. The grant was made under the CDW Corporation Long-Term Incentive Plan. --- Signature --- /s/ /s/ Stephanie Tso, Attorney-in-Fact (2026-08-11)