Claudine Adamo, Executive Vice President at Costco Wholesale Corp /NEW (NASDAQ:COST), filed a Form 4 on October 26, 2026, reporting five tax-withholding transactions on October 22, 2026, connected to the vesting of previously granted restricted stock units.

Key Highlights

  • Reporting person: Claudine Adamo, Executive Vice President at Costco Wholesale Corp /NEW
  • Transaction type: Five separate "F" code dispositions, each representing shares withheld by the company for taxes upon RSU vesting
  • Total shares withheld: 96.942, 198.289, 177.058, 110.967, and 108.607 shares disposed of across five transactions, all on October 22, 2026
  • Per-share price: $1,018.21, described in the filing as the closing market price of Costco common stock on Nasdaq on October 22, 2026
  • Resulting beneficial ownership: 6,441.647 shares of common stock held directly following all five transactions
  • Filing date: October 26, 2026, signed by Alejandro Torres as Attorney-in-Fact

Five Tax-Withholding Transactions Reduce Adamo's Direct Holdings in Costco Common Stock

According to the filing, all five transactions carried transaction code "F," which the form associates with shares withheld by the issuer for the purpose of satisfying tax obligations arising from the vesting of previously granted restricted stock units. The filing's footnote states: "This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on Nasdaq on October 22, 2026." Each of the five dispositions was recorded at $1,018.21 per share.

Costco Wholesale Corp /NEW is a membership-based warehouse retailer. Adamo holds the title of Executive Vice President, according to the filing's relationship disclosure. The five sequential transactions reduced her directly held common stock from a starting position to a final directly held balance of 6,441.647 shares. No indirect holdings or derivative securities were reported. The form was filed as an individual filing by one reporting person and was not marked as an amendment to a prior filing.

What Was Disclosed

The filing reports five tax-withholding dispositions of Costco common stock by Executive Vice President Claudine Adamo on October 22, 2026, all at $1,018.21 per share in connection with RSU vesting, leaving a directly held balance of 6,441.647 shares.