1. COST reported Q1 revenue of $67.31 billion, exceeding estimates. 2. Adjusted earnings per share were $4.50, higher than the predicted $4.27. 3. Comparable sales increased by 6.4% year-over-year, strong growth across regions. 4. Membership fees rose to $1.33 billion, indicating solid customer retention. 5. COST ended the quarter with $16.22 billion in cash and cash equivalents.