COSTCO WHOLESALE CORP /NEW (COST) SEC Filings

COSTCO WHOLESALE CORP (COST) reported that Executive Vice President Yoram Rubanenko had equity compensation activity on September 10, 2026. He acquired 4,129 shares of common stock at no cost in connection with earned awards from a Restricted Stock Unit grant initially made on October 22, 2025, subject to fiscal 2026 performance conditions that were deemed satisfied by the Compensation Committee. On the same date, 1,695.952 shares were delivered or withheld at $902.38 per share for payment of exercise price or tax liability, resulting in a net share increase from this vesting event. The RSU award vests 20% on the first anniversary of the grant date and an additional 20% in each of the following four years based on continued employment, with potential accelerated vesting under the 2019 Incentive Plan at 25, 30, and 35 years of service.

COSTCO WHOLESALE CORP /NEW (COST) reported that Executive Vice President Pierre Riel received an award of 4,552 shares of common stock on September 10, 2026, reflecting earned performance-based Restricted Stock Units originally granted on October 22, 2025. On the same date, 1,561.66 shares of common stock were delivered or withheld at $902.38 per share for payment of exercise price or tax liability. The earned awards vest 20% on the first anniversary of the October 22, 2025 grant date and an additional 20% over each of the following four years, subject to continued employment, with potential accelerated vesting under the company’s 2019 Incentive Plan based on long-term service milestones. No Rule 10b5-1 trading plan is reported for these transactions.

COSTCO WHOLESALE CORP (COST) reported that Executive Vice President James C. Klauer received a grant of 4,129 Restricted Stock Units tied to fiscal 2026 performance, deemed earned by the Compensation Committee. The award vests 20% on the first anniversary of the October 22, 2025 grant date and 20% in each of the next four years, subject to continued employment and potential accelerated vesting under the 2019 Incentive Plan. On September 10, 2026, 936.115 shares of common stock were delivered or withheld to pay the exercise price or tax liability, and Klauer also reports 98.5 shares held indirectly by his spouse. No Rule 10b5-1 trading plan is reported.

COSTCO WHOLESALE CORP /NEW (COST) reported that Executive Vice President Teresa A. Jones received a grant related to 4,129 shares of common stock on September 10, 2026, tied to performance-based awards initially granted on October 22, 2025 for fiscal 2026. The earned awards vest 20% on the first anniversary of the original grant date and 20% in each of the next four years, subject to continued employment, with potential accelerated vesting under the 2019 Incentive Plan. On the same date, 1,458.535 shares of common stock were delivered or withheld at $902.38 per share for payment of exercise price or tax liability. No Rule 10b5-1 trading plan is reported.

COSTCO WHOLESALE CORP /NEW (COST) reported that Executive Vice President Caton Frates received a compensation-related equity award on September 10, 2026. The award covers 4,552 Restricted Stock Units tied to prior performance for fiscal 2026, with 20% vesting on the first anniversary of the October 22, 2025 grant date and an additional 20% vesting in each of the following four years, subject to continued employment. Under the company’s 2019 Incentive Plan, employees may also be eligible for accelerated vesting at their 25th, 30th and 35th service anniversaries. On the same date, 1,654.363 shares of common stock were delivered or withheld at $902.38 per share for payment of exercise price or tax liability.

COSTCO WHOLESALE CORP (COST) reported that Executive Vice President Claudine Adamo had performance-based restricted stock units earned from a grant initially made on October 22, 2025, for fiscal 2026, with 4,129 shares of common stock credited on September 10, 2026 at no cost. On the same date, 916.685 shares were delivered or withheld to pay the exercise price or tax liability, and the remaining earned awards vest 20% on the first anniversary of the grant date and 20% annually over the next four years, subject to continued employment and potential accelerated vesting under the 2019 Incentive Plan. No Rule 10b5-1 trading plan is reported.

COSTCO WHOLESALE CORP /NEW (COST) reported an initial ownership filing for Executive Vice President Adam Webb. As of August 31, 2026, he reports 3,526.832 shares of common stock held directly, including 2,726.578 unvested Restricted Stock Units. Those RSUs are scheduled to vest in two tranches on October 22, 2026 and October 22, 2027. No purchase or sale transactions are reported, and no Rule 10b5-1 trading plan is indicated. A Power of Attorney is provided as an exhibit.

COSTCO WHOLESALE CORP /NEW director Jeffrey S. Raikes transferred 5,249 Common Stock shares as a bona fide gift to a non-profit foundation on 2026-07-10 at a stated price of $0.0000 per share. Following this charitable transfer, he holds 6,043.936 shares directly.

Costco Wholesale Corporation reported strong June 2026 sales and confirmed its regular dividend. Net sales for the five-week retail month of June were $29.24 billion, up 10.6% from $26.44 billion a year earlier. Net sales for the first 44 weeks of the fiscal year were $250.43 billion, an increase of 10.1% from $227.46 billion last year.

For the periods ended July 5, 2026, total-company comparable sales rose 8.8% for five weeks and 8.3% for 44 weeks, while digitally-enabled comparable sales increased 20.9% and 21.5%, respectively. Excluding gasoline price and foreign exchange impacts, total-company comparable sales rose 7.0% for five weeks and 6.7% for 44 weeks. The Board of Directors declared a quarterly cash dividend of $1.47 per share, payable August 7, 2026, to shareholders of record on July 24, 2026.