Whittenburg Mark G 4

What Happened

• Mark G. Whittenburg, General Counsel and Secretary of Core & Main, had a total of 835 shares withheld to cover taxes when a portion of his restricted stock units (RSUs) vested. The filing shows 278 shares withheld on 2026-03-09 at $49.96 ($13,889) and 557 shares withheld on 2026-03-10 at $49.38 ($27,505), for a combined value of $41,394. These are dispositions recorded as tax withholding (code F), not open-market sales.

Key Details

• Transaction dates and prices:
  • 2026-03-09: 278 shares withheld @ $49.96 — $13,889
  • 2026-03-10: 557 shares withheld @ $49.38 — $27,505
• Total shares withheld: 835; total value: $41,394.
• Shares owned after the transaction: not specified in this Form 4.
• Footnote: F1 — shares were withheld by the issuer to satisfy tax withholding upon RSU vesting.
• Filing: Report filed 2026-03-11 (timely for Form 4 reporting).

Context

• This was a routine, compensation-related tax withholding (code F), not a discretionary sale. Withheld shares are commonly surrendered to the company to cover tax obligations upon RSU vesting and do not necessarily signal the insider’s view of the company’s stock.