Costco EVP Riel Pierre Receives RSU Award; 1,562 Shares Withheld

What Happened

• Riel Pierre, Executive Vice President of Costco Wholesale Corp (COST), received an award of 4,552 restricted stock units (RSUs) on 2026-09-10. To satisfy tax withholding, 1,561.66 of those RSUs were surrendered (disposed) at a reported value of $902.38 per share, totaling approximately $1,409,211. The RSU grant is reported as an award (code A); the withholding is reported under tax withholding (code F).
• This was an equity award, not an open-market purchase or sale by the insider. Net new RSUs retained from this transaction are roughly 2,990.34 (4,552 granted minus 1,561.66 withheld).

Key Details

• Transaction date: 2026-09-10; Filing date (Form 4): 2026-09-14.
• Grant: 4,552 RSUs, reported at $0.00 per share (award).
• Withholding: 1,561.66 RSUs withheld/disposed at $902.38 per share = ~$1,409,211 to cover taxes.
• Net RSUs added: ~2,990.34.
• Shares owned after transaction: Not disclosed in the provided filing.
• Footnotes: The award was originally granted Oct 22, 2025 and was subject to performance conditions for fiscal 2026, which the Compensation Committee has deemed satisfied. Vesting: 20% on the first anniversary of the grant date and 20% each year over the following four years (i.e., full vesting over five years), with possible accelerated vesting for long service anniversaries (25th/30th/35th year). The award is a grant of Restricted Stock Units.
• Filing timing: The form was filed four days after the transaction date; the filing does not indicate a late-filing notification.

Context

• The disposition here is tax withholding to cover the RSU tax liability—not an open-market sale intended to realize profit. For retail investors, purchases by insiders can be more informative than routine tax-related withholdings. This filing documents compensation delivery and the mechanics of tax withholding rather than a directional bet on the stock.