LEAHY CHRISTINE A 4

What Happened Christine A. Leahy, Chair, President and Chief Executive Officer of CDW Corp (CDW), made an open-market purchase of 4,830 shares on May 18, 2026 at $103.39 per share, for a total reported cost of $499,398. The filing reports this as a purchase (transaction code P), which is a straightforward open-market acquisition rather than a grant or option exercise.

Key Details

• Transaction date and price: May 18, 2026 — 4,830 shares at $103.39 each (total $499,398).
• Transaction type: Open-market purchase (P).
• Shares owned after transaction: Not specified in this filing.
• Filing timeliness: Report filed May 19, 2026 (next business day) — appears timely.
• Notable footnotes:
  • F1: Confirms shares were bought on the open market.
  • F2: Filing includes an adjustment adding 21.1 shares (dividend equivalent awards from March 10, 2026) that were accidentally omitted from a Form 4 filed March 12, 2026 — this is an ownership adjustment, not part of the May 18 purchase.
  • F3: States some shares are indirectly held through a family trust.

Context This purchase was a routine open-market buy by the company’s CEO. Purchases can be interpreted as a personal investment in the company, but filings do not disclose motivation. The small corrective addition of 21.1 shares noted in F2 relates to a prior reporting omission and does not change the May 18 transaction details.