Costco Wholesale Reports Q3 Fiscal 2026 Operating Results

What Happened

• Costco Wholesale Corporation (COST) filed an 8-K (Item 2.02) on May 28, 2026 announcing it issued a press release with operating results for the third quarter (a 12-week period) and the first 36 weeks of fiscal 2026, periods ended May 10, 2026. The press release and a supplemental earnings release document were attached to the filing.

Key Details

• Filing date: May 28, 2026 (Form 8-K, Item 2.02 — Results of Operations and Financial Condition).
• Periods reported: third quarter (12 weeks) and year-to-date (first 36 weeks) of fiscal 2026, ended May 10, 2026.
• Exhibits attached: Exhibit 99.1 (press release dated May 28, 2026) and Exhibit 99.2 (third quarter fiscal 2026 supplemental information).
• The 8-K was signed by Gary Millerchip, Executive Vice President and Chief Financial Officer.

Why It Matters

• This filing notifies investors that Costco has released its latest quarterly and year-to-date operating results — key inputs for evaluating recent revenue, profitability, comparable-store trends, membership performance and guidance (where provided).
• Retail investors should review the attached press release and supplement for the actual financial figures and metrics; those details will drive analyst updates, earnings reactions and potential stock movement.