WallStreetZenWallStreetZen

NASDAQ: COST
Costco Wholesale Corp Stock Ownership - Who owns Costco?

OverviewForecastEarningsRevenueDividendOwnership
Statistics

Insider buying vs selling

Have Costco Wholesale Corp insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Adam Webb SelfEVP2026-10-2257$1.02k
$58.04kSell
John Christopher SullivanEVP2026-10-22647$1.02k
$658.78kSell
John Christopher SullivanEVP2026-10-22572$1.02k
$582.42kSell
Javier PolitEVP2026-10-22390$1.02k
$397.10kSell
Javier PolitEVP2026-10-22294$1.02k
$299.35kSell
Javier PolitEVP2026-10-22337$1.02k
$343.14kSell
Javier PolitEVP2026-10-22549$1.02k
$559.00kSell
Adam Webb SelfEVP2026-10-2240$1.02k
$40.73kSell
Adam Webb SelfEVP2026-10-2261$1.02k
$62.11kSell
Adam Webb SelfEVP2026-10-2264$1.02k
$65.17kSell

1 of 7

COST insiders have sold more... subscribe to Premium to read more.
Net Insider Buy/Sell (L12M) Ownership

Be the first to know when COST insiders and whales buy or sell their stock.

COST Shareholders

What type of owners hold Costco Wholesale Corp stock?

Institutional
Insider
Retail
NameHoldSharesValueType
James D. Sinegal0.27%1,216,371$1.27BInsider
W. Craig Jelinek0.12%522,541$543.73MInsider
Jeffrey H. Brotman0.10%448,429$466.61MInsider
Thomas Kirk Walker0.06%249,743$259.87MInsider
Charles T. Munger0.04%187,669$195.28MInsider
Richard D. Dicerchio0.03%128,305$133.51MInsider
Richard M. Libenson0.02%80,560$83.83MInsider
Roland Michael Vachris0.01%62,575$65.11MInsider
Patrick J. Callans0.01%60,894$63.36MInsider
Hamilton E. James0.01%58,105$60.46MInsider

1 of 3

COST vs Discount Store Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
COST0.07%0.85%Net SellingNet Selling
TGT0.09%1.12%Net SellingNet Selling
DG0.10%0.56%Net SellingNet Selling
DLTR0.10%6.10%Net SellingNet Selling
BJ0.11%34.72%Net SellingNet Selling
View Top Discount Store Stocks

Costco Stock Ownership FAQ

Who owns Costco?

Costco (NASDAQ: COST) is owned by 0.07% institutional shareholders, 0.85% Costco insiders, and 99.07% retail investors. James D. Sinegal is the largest individual Costco shareholder, owning 1.22M shares representing 0.27% of the company. James D. Sinegal's Costco shares are currently valued at $1.27B.

If you're new to stock investing, here's how to buy Costco stock.
©2026 WallStreetZen
Company
AboutNewsBlogStock Investing FAQPlansPrivacy PolicyTerms of ServiceCancellation & RefundsPerformanceHelp GuidesContactTwitterYouTubeNewsletter
Stock Tools
Top Performing AnalystsStock ScreenerStock ForecastTrending StocksStrong Buy StocksHighest Earnings StocksBest Dividend Paying StocksStatisticsStock Market SectorsStock Market IndustriesHow to Buy Stocks Online
Stock Ideas
Buy The DipBiggest Stock Gainers TodayBiggest Stock Losers Today52 Week High Stocks52 Week Low StocksMost Active Stocks TodayMost Undervalued StocksBest Penny Stocks to Buy NowBest Stocks Under $5Best Stocks Under $10
WallStreetZen does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.

Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.