COSTCO WHOLESALE CORP /NEW 4

Executive Vice President Frates Caton received performance-vested restricted stock units in Costco common stock and had a portion of shares withheld for taxes, resulting in direct ownership of 8,712.638 shares.

Executive Vice President Frates Caton of Costco Wholesale Corp. reported performance-based restricted stock units that were originally granted on October 22, 2025 and, following satisfaction of fiscal 2026 performance conditions, resulted in the acquisition of 4,552 shares of common stock on September 10, 2026, with 10,367.001 shares then shown as acquired in the reporting table. On the same date, 1,654.363 shares were automatically withheld and disposed of at an implied price of $902.38 per share to satisfy tax withholding obligations associated with the vesting, a routine Form 4 code F transaction. Following these transactions, Caton directly owned 8,712.638 shares of Costco common stock, all subject to the company’s standard vesting schedule under the 2019 Incentive Plan, including potential accelerated vesting based on long-term service milestones.

Filing Facts

CIK

909832

Ticker

COST

Form

4

Source Type

sec

Accession

0000909832-26-000070

Alert Tier

7