Sanderson Katherine Elizabeth 4

What Happened

• Katherine Elizabeth Sanderson, Chief Human Resources Officer & Executive Vice President, Coworker Success at CDW Corporation, received 104.96 shares as dividend equivalents tied to outstanding restricted stock unit (RSU) awards on 2026-03-10. In connection with the RSU settlement, 644.65 shares were withheld on 2026-03-12 to cover tax liabilities at a withholding price of $118.91 per share, valued at approximately $76,655. The withheld shares are a tax withholding (not an open-market sale).

Key Details

• Transaction types: A = Award/acquisition (104.96 shares @ $0.00); F = Tax withholding/payment of tax liability (644.65 shares @ $118.91; $76,655).
• Dates: Award recorded 2026-03-10; tax withholding executed and Form 4 filed 2026-03-12 (filing appears timely).
• Shares owned after the transactions: not specified in the provided filing details.
• Footnotes: F1 = Dividend equivalents awarded pursuant to outstanding RSU awards under the 2021 Long-Term Incentive Plan. F2 = Shares withheld to cover taxes on the RSU settlement.
• Code meaning: A = award/grant; F = shares withheld to satisfy tax withholding.

Context

• These entries reflect the settlement of RSUs and associated tax-withholding — a routine administrative action for equity compensation. The withheld shares satisfy tax obligations and are not the same as a discretionary open-market sale.