When Does Costco Wholesale Report Earnings?
COST · Nasdaq · Next earnings date for Costco Wholesale Corp, estimated from its SEC filing history, with a live countdown in trading days.
Next earnings date
Thursday, December 10, 2026
Fiscal Q1 2027 results · quarter ended November 22, 2026 · ±3 days
Estimated from 6 prior fiscal Q1 reports — companies in this tier have reported within 3 days of our estimate about 3 times out of 4.
After that
Fiscal Q2 2027
Estimated Mar 4, 2027 · after the close
Fiscal year
52/53-week year ending near August 30
fiscal 2027 ends Aug 31, 2027
COST earnings date history
The last 8 earnings releases, from Costco Wholesale's SEC filings — its earnings 8-Ks, or the quarterly report itself when results are published that way. The “days after” column is how long after the fiscal quarter ended the company reported — the pattern behind the estimate above.
| Quarter | Reported | Time | Days after |
|---|---|---|---|
| Q4 2026ended Aug 31 | Sep 24, 2026Thursday | After close | 24 |
| Q3 2026ended May 10 | May 28, 2026Thursday | After close | 18 |
| Q2 2026ended Feb 15 | Mar 5, 2026Thursday | After close | 18 |
| Q1 2026ended Nov 23 | Dec 11, 2025Thursday | After close | 18 |
| Q4 2025ended Aug 31 | Sep 25, 2025Thursday | After close | 25 |
| Q3 2025ended May 11 | May 29, 2025Thursday | After close | 18 |
| Q2 2025ended Feb 16 | Mar 6, 2025Thursday | After close | 18 |
| Q1 2025ended Nov 24 | Dec 12, 2024Thursday | After close | 18 |
How this estimate is made
Companies report on a rhythm. We read every Form 8-K earnings release and 10-Q/10-K Costco Wholesale has filed with the SEC, work out how many days after each fiscal quarter ended the results came out and on which weekday, and project that pattern onto the current quarter — using the same fiscal quarter from prior years, since fourth-quarter reports run later than the others. The result is snapped to a trading day and capped at the SEC filing deadline for a large accelerated filer.
Whether a company reports before the open or after the close comes from the time its past earnings 8-Ks reached the SEC. When Costco Wholesale announces an exact date, this page switches from estimated to confirmed. Until then, verify the date with the company's investor relations site before trading around it.
Frequently asked questions
When does Costco Wholesale (COST) report earnings?›
Costco Wholesale is expected to report Fiscal Q1 2027 earnings on Thursday, December 10, 2026, after the market closes.
How many trading days until COST earnings?›
47.5 trading days (68 calendar days) as of Saturday, October 3, 2026, counting weekdays and skipping NYSE/Nasdaq holidays.
Does COST report before or after the market opens?›
Costco Wholesale typically reports after the market closes, based on when its past earnings 8-K filings reached the SEC.
Estimated dates are projections from public SEC filings, not announcements by Costco Wholesale Corp. Confirm with the company before making decisions. Not investment advice.