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Costco Wholesale Corp
NASDAQ:COST

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Costco Wholesale Corp
NASDAQ:COST
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Price: 992.48 USD -0.6% Market Closed
Market Cap: $440.5B

During the last 3 months Costco Wholesale Corp insiders have not bought any shares, and sold 6.3m USD worth of shares. The stock price has increased by 11% over this period (open performance analysis).

The last transaction was made on Jan 21, 2026 by Jones Teresa A. , who sold 838.3k USD worth of COST shares.

Last Transactions:
Jones Teresa A.
$-838.3k
Decker Susan L
$-437.4k
Klauer James C
$-1.4m
Miller Russell D
$-1.4m
Polit Javier
$-481.5k
Polit Javier
Senior Vice President, General Manager – Asia
$-1.8m
Wilcox William Richard
$-2.2m
Barbre Tiffany Marie
$-1.2m
Adamo Claudine
$-2.5m
Frates Caton
$-1.4m
Miller Russell D
$-3.1m
Jones Teresa A.
$-595.2k
Rubanenko Yoram
$-3.9m
Decker Susan L
$-535.1k
Callans Patrick J
$-3m
Riel Pierre
$-2m
Klauer James C
$-3.9m
Millerchip Gary
$-1m
Adamo Claudine
$-830.3k
Frates Caton
$-765.2k
Vachris Roland Michael
$-3.4m
Galanti Richard A
$-1.3m
Jones Teresa A.
$-717.2k
Riel Pierre
$-1.8m
Miller Russell D
$-3.9m
Callans Patrick J
$-2.2m
Adamo Claudine
$-2.8m
Frates Caton
$-1.5m
Decker Susan L
$-543.4k
Galanti Richard A
$-437k
Galanti Richard A
$-431.9k
Jones Teresa A.
$-3.3k
View All Transactions

During the last 3 months Costco Wholesale Corp insiders have not bought any shares, and sold 6.3m USD worth of shares. The stock price has increased by 11% over this period (open performance analysis).

The last transaction was made on Jan 21, 2026 by Jones Teresa A. , who sold 838.3k USD worth of COST shares.

Sold
0-3
months
6.3m USD
5
3-6
months
10.4m USD
5
6-9
months
10.1m USD
5
9-12
months
9.9m USD
5
Bought
0-3
months
0
0 USD
3-6
months
0
0 USD
6-9
months
0
0 USD
9-12
months
0
0 USD

Costco Wholesale Corp
Insider Trading Chart

Costco Wholesale Corp
Insiders Performance

1 Week Later 1 Month Later 3 Months Later 6 Months Later 1 Year Later
Average Return
Median Return
Win Rate

Costco Wholesale Corp
Last Insider Transactions

Global
Insiders Monitor

Costco Wholesale Corp
Glance View

Costco Wholesale Corp., a titan of the retail industry, emerged from humble beginnings to redefine how consumers experience value shopping. Founded in 1976 by James Sinegal and Jeffrey Brotman, Costco's journey began with a simple yet powerful ethos: to provide quality goods and services at the lowest possible prices. Unlike traditional retailers, Costco operates on a membership-only model, charging customers an annual fee for the privilege of accessing its wide range of products. This membership system generates a steady stream of revenue and fosters a sense of exclusivity among its shoppers, who are greeted with everything from electronics and groceries to luxury goods and vacation packages. The company's vast warehouses, designed for efficiency and cost savings, allow customers to purchase goods in bulk, further enhancing the value proposition. What truly sets Costco apart is its business model, which emphasizes high sales volume and rapid inventory turnover, allowing it to negotiate competitive prices with suppliers. A cornerstone of its success is the razor-thin markup strategy; Costco is known for capping markups on all goods, ensuring that customers find bargains they may not encounter elsewhere. The company's operations extend into ancillary businesses, including gas stations, food courts, and optical centers, each contributing marginally to profits but significantly to customer loyalty and foot traffic. By maintaining a streamlined selection of items—typically favoring high-quality, private-label brands—Costco achieves economies of scale that reinforce its cost leadership. Its dedication to employee satisfaction, with industry-leading wages and benefits, reflects a corporate philosophy that happy employees lead to happy customers, further driving its robust membership renewals and financial stability.

COST Intrinsic Value
562.11 USD
Overvaluation 43%
Intrinsic Value
Price

What is Insider Trading?

Insider trading refers to the buying or selling of a company’s stock by individuals with access to non-public, material information about the company.

While legal insider trading occurs when insiders follow disclosure rules, illegal insider trading involves trading based on confidential information and is prohibited by law.

Why is Insider Trading Important?

It isn't a coincidence that corporate executives seem to always buy at the right times. After all, they have access to every bit of company information you could ever want.

However, the fact that company executives have unique insights doesn't mean that individual investors are always left in the dark. Insider trading data is out there for all who want to use it.

Peter Lynch

Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.

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