Live SEC filing ledger

Costco Wholesale (COST) SEC filings 2026: latest 10-K, 10-Q, 8-K and insider trades

Free source-linked SEC filing history for Costco Wholesale Corporation (COST). Browse recent 10-K, 10-Q, and 8-K filings with direct SEC source links, filing dates, and signal summaries.

All company pages Browse all filings Latest filing source Get COST alerts

Latest signal

8-K filed 2026-10-16

Last checked against SEC EDGAR 2026-10-22 14:15 UTC. 25 filings shown, each linked to its SEC source.

Filings loaded: 25

Tracked forms: 8-K, 4, 10-K, 10-Q, DEF 14A

Latest accepted: 2026-10-17

Key financials from SEC XBRL

Costco Wholesale (COST) financials from its latest 10-K and 10-Q

Values come from the XBRL data Costco Wholesale filed with the SEC. Each number links to the filing it was reported in. Hover a value to see the XBRL concept and accession number.

Metric	Latest fiscal year: FY2026 (ended 2026-08-30)	Prior fiscal year: FY2025 (ended 2025-08-31)	Latest quarter (10-Q)
Revenue	$303.2B	$275.2B	n/a
Net income	$9.2B	$8.1B	n/a
Diluted EPS	$20.76	$18.21	n/a
Operating cash flow	$15.8B	$13.3B	n/a
Cash and equivalents	$20.2B	$14.2B	n/a
Total assets	$89.0B	$77.1B	n/a

Quarter values cover the three months reported in the latest 10-Q, shown only when it is newer than the fiscal year. Cash-flow totals are reported year-to-date in 10-Qs, so no quarter value is shown for them.

Insider trades from Form 4

Recent Costco Wholesale (COST) insider transactions

Common-stock transactions reported on SEC Form 4 by Costco Wholesale directors, officers and 10% owners. Each row links to its Form 4 on EDGAR. Value is shares × reported price, shown for open-market buys and sales only; for option exercises the price is the exercise price.

Date	Insider	Transaction	Shares	Price	Value	Owned after	Form 4
2026-10-13	Wilcox William Richard Executive Vice President	Open-market sale	−1,100	$958.21	$1.1M	3,094	Filed 2026-10-14
2026-09-29	Frates Caton Sr. Executive Vice President	Open-market sale	−801	$915.93	$733,328.363	7,912	Filed 2026-09-30
2026-09-29	Adamo Claudine Executive Vice President	Open-market sale	−2,200	$915.93	$2.0M	7,134	Filed 2026-09-30
2026-09-10	Wilcox William Richard Executive Vice President	Grant or award	+4,129	$0.00	n/a	6,129	Filed 2026-09-14
2026-09-10	Wilcox William Richard Executive Vice President	Tax withholding	−1,935	$902.38	n/a	4,194	Filed 2026-09-14
2026-09-10	Rubanenko Yoram Executive Vice President	Grant or award	+4,129	$0.00	n/a	12,376	Filed 2026-09-14
2026-09-10	Rubanenko Yoram Executive Vice President	Tax withholding	−1,696	$902.38	n/a	10,680	Filed 2026-09-14
2026-09-10	Riel Pierre Executive Vice President	Grant or award	+4,552	$0.00	n/a	15,808	Filed 2026-09-14
2026-09-10	Riel Pierre Executive Vice President	Tax withholding	−1,562	$902.38	n/a	14,246	Filed 2026-09-14
2026-09-10	Klauer James C Executive Vice President	Grant or award	+4,129	$0.00	n/a	48,966	Filed 2026-09-14
2026-09-10	Klauer James C Executive Vice President	Tax withholding	−936	$902.38	n/a	48,030	Filed 2026-09-14
2026-09-10	Jones Teresa A. Executive Vice President	Grant or award	+4,129	$0.00	n/a	8,057	Filed 2026-09-14
2026-09-10	Jones Teresa A. Executive Vice President	Tax withholding	−1,459	$902.38	n/a	6,598	Filed 2026-09-14
2026-09-10	Frates Caton Executive Vice President	Grant or award	+4,552	$0.00	n/a	10,367	Filed 2026-09-14
2026-09-10	Frates Caton Executive Vice President	Tax withholding	−1,654	$902.38	n/a	8,713	Filed 2026-09-14

Recent filings to review first

Start with the most recent source-linked filings

5 filing types

Recent SEC activity for COST, refreshed on the regular ingestion cadence.

Source-first trail

Direct SEC filing and index links keep the page auditable instead of asking readers to trust a black-box summary.

7/10 top signal

Deterministic scores and reasons help prioritize filings that deserve a closer human review.

What to monitor in future filings

How to read the current COST filing trail

Start with the latest filing source, then compare the form type against the context below. Use signal scores as triage, not advice: high scores mean “review sooner,” not “buy or sell.”

8-K

Current report for material events such as leadership changes, deals, earnings releases, or governance updates.

4

SEC filing that may contain material company updates worth verifying at the source.

10-K

Annual report with audited financials, risk factors, business updates, and management discussion.

10-Q

Quarterly report with fresh operating results, liquidity notes, and risk-factor updates.

DEF 14A

Proxy statement with board, executive compensation, shareholder vote, and governance details.

How to compare this company's filing trail

Costco Wholesale Corporation filing alerts should focus on source-backed changes.

Costco Wholesale Corporation is tracked here as a retail company. Use the free filing trail to review source documents before deciding whether paid watchlist delivery is useful.

Compare recent 10-K, 10-Q, and 8-K filings Browse peer company pages Compare filing types

membership-fee and comparable-sales commentary

inventory and margin updates

annual governance disclosures

Standout filings

Recent filings to review before setting an alert.

8-K · score 7/10

8-K: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers (Item 5.02)

Medium-priority 8-K: 8-K: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers (Item 5.02). Useful for a routine company watchlist review.

2026-10-16Costco Wholesale Corporation

Verify at SEC source →

8-K · score 5/10

8-K: Other Events (Item 8.01)

Medium-priority 8-K: 8-K: Other Events (Item 8.01). Useful for a routine company watchlist review.

2026-10-14Costco Wholesale Corporation

Verify at SEC source →

10-K · score 7/10

Annual report (10-K) for the fiscal year ended 2026-08-30

Medium-priority 10-K: Annual report (10-K) for the fiscal year ended 2026-08-30. Useful for a routine company watchlist review.

2026-10-07Costco Wholesale Corporation

Verify at SEC source →

Recent filings

Source-linked filing activity

8-K

Costco Wholesale Corporation 8-K

8-K: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers (Item 5.02)

Filing date: 2026-10-16
Accepted: 2026-10-17
Score: 7/10

COST 8-K filing source Filing index