---
schema_version: "secwatch.filing_event.v1"
accession: "0000909832-26-000046"
form_type: "8-K"
ticker: "COST"
cik: "0000909832"
company_name: "COSTCO WHOLESALE CORP /NEW"
filed_at: "2026-05-28T20:17:32+00:00"
generated_at: "2026-05-28T20:19:30.299161+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Costco Q3 net sales $69.15B (+11.6% YoY); EPS $4.93 vs $4.28

## Summary
- Net sales $69.15B (+11.6%); diluted EPS $4.93 vs $4.28 last year; net income $2.19B (+15.2%).
- Total company comparable sales +9.8% reported, +6.6% adjusted ex gas/FX.
- Membership income +9.9% to $2.19B; 148.5M total cardholders (+4%), renewal rate 89.7%.
- Digitally-enabled comparable sales +21.5% (adjusted +20.8%); ecommerce traffic +37%.
- 931 warehouses globally; opened two new US warehouses in Q3 (Liberty Hill, TX and South St. George, UT).

## SEC filing metadata
- accession: 0000909832-26-000046
- form_type: 8-K
- ticker: COST
- cik: 0000909832
- company_name: COSTCO WHOLESALE CORP /NEW
- filed_at: 2026-05-28T20:17:32+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/909832/000090983226000046/0000909832-26-000046-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/909832/000090983226000046/cost-20260528.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000909832-26-000046
- JSON: https://secwatch.observer/filing/0000909832-26-000046.json
- Plain text: https://secwatch.observer/filing/0000909832-26-000046.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.