Costco Wholesale Corporation Insider Trading

COST

Last 12 months

Insiders sold $14.6M and bought nothing on the open market.

None of the selling was scheduled in advance under a 10b5-1 plan. Executive Vice President Javier Polit sold $2.26M on Dec 30, 2025, 20% of their stake, outside a plan. The last open-market buy by an executive or director was in Jun 2022.

Net open-market

−$14.6M

0 buys · 12 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

0 / 9

executives and directors

Last open-market buy

Jun 2022

Jun 7, 2022

Get an email when COST's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Oct 13	William Richard Wilcox Executive Vice President	SoldNo plan	1,100	$958.21	$1.05M	26%	Form 4
Sep 29	Caton Frates Sr. Executive Vice President	SoldNo plan	801	$915.93	733K	9.2%	Form 4
Sep 29	Claudine Adamo Executive Vice President	SoldNo plan	2,200	$915.93	$2.02M	24%	Form 4
Jun 23	Kenneth D Denman Director	SoldNo plan	885	$957.45	847K	16%	Form 4
Apr 1	Caton Frates Executive Vice President	SoldNo plan	700	$993.00	695K	11%	Form 4
Mar 9	Claudine Adamo Executive Vice President	SoldNo plan	730	$1,003.02	732K	11%	Form 4
Jan 21	Teresa A. Jones Executive Vice President	SoldNo plan	850	$986.26	838K	17%	Form 4
Jan 16	Susan L Decker Director	SoldNo plan	458	$955.00	437K	5.1%	Form 4
Jan 14	James C Klauer Executive Vice President	SoldNo plan	1,500	$939.00	$1.41M	3.2%	Form 4
Jan 9	Russell D Miller Sr. Executive Vice President	SoldNo plan	1,500	$916.32	$1.37M	15%	Form 4
Dec 29, 2025 – Dec 30, 2025	Javier Polit Executive Vice President	SoldNo plan 2 parts	2,607	$866.29 average	$2.26M	20%	Form 4
Nov 7, 2025	William Richard Wilcox Executive Vice President	SoldNo plan	2,400	$930.13	$2.23M	55%	Form 4
Oct 24, 2025	Tiffany Marie Barbre Other	SoldNo plan	1,239	$934.62	$1.16M	19%	Form 4
Oct 24, 2025	Claudine Adamo Executive Vice President	SoldNo plan	2,700	$935.68	$2.53M	28%	Form 4
Sep 29, 2025	Russell D Miller Sr. Executive Vice President	SoldNo plan	3,381	$915.00	$3.09M	26%	Form 4
Sep 29, 2025	Caton Frates Executive Vice President	SoldNo plan	1,540	$910.02	$1.4M	14%	Form 4
Aug 20, 2025	Teresa A. Jones Executive Vice President	SoldNo plan	600	$992.05	595K	20%	Form 4
Jul 14, 2025	Yoram Rubanenko Executive Vice President	SoldNo plan	4,000	$974.96	$3.9M	41%	Form 4
Jun 18, 2025	Susan L Decker Director	SoldNo plan 2 parts	547	$980.00 average	536K	4.5%	Form 4
Jun 9, 2025	Patrick J Callans Executive Vice President	SoldNo plan	3,000	$1,002.77	$3.01M	4.9%	Form 4
Jun 6, 2025	Pierre Riel Executive Vice President	SoldNo plan	2,000	$1,014.15	$2.03M	20%	Form 4
Apr 17, 2025	James C Klauer Executive Vice President	SoldNo plan	4,000	$981.07	$3.92M	8.3%	Form 4
Mar 27, 2025	Gary Millerchip Executive Vice President	SoldNo plan	1,100	$940.01	$1.03M	9.0%	Form 4
Mar 24, 2025	Claudine Adamo Executive Vice President	SoldNo plan	900	$922.56	830K	11%	Form 4
Mar 18, 2025	Caton Frates Executive Vice President	SoldNo plan	850	$900.25	765K	9.7%	Form 4
Mar 11, 2025	Roland Michael Vachris President and CEO	SoldNo plan	3,600	$931.00	$3.35M	8.1%	Form 4

Oct 13No plan
William Richard Wilcox
Executive Vice President · sold 1,100 at $958.21
$1.05M
26% of stake
Sep 29No plan
Caton Frates
Sr. Executive Vice President · sold 801 at $915.93
733K
9.2% of stake
Sep 29No plan
Claudine Adamo
Executive Vice President · sold 2,200 at $915.93
$2.02M
24% of stake
Jun 23No plan
Kenneth D Denman
Director · sold 885 at $957.45
847K
16% of stake
Apr 1No plan
Caton Frates
Executive Vice President · sold 700 at $993.00
695K
11% of stake
Mar 9No plan
Claudine Adamo
Executive Vice President · sold 730 at $1,003.02
732K
11% of stake
Jan 21No plan
Teresa A. Jones
Executive Vice President · sold 850 at $986.26
838K
17% of stake
Jan 16No plan
Susan L Decker
Director · sold 458 at $955.00
437K
5.1% of stake
Jan 14No plan
James C Klauer
Executive Vice President · sold 1,500 at $939.00
$1.41M
3.2% of stake
Jan 9No plan
Russell D Miller
Sr. Executive Vice President · sold 1,500 at $916.32
$1.37M
15% of stake
Dec 29, 2025 – Dec 30, 2025No plan
Javier Polit
Executive Vice President · sold 2,607 at avg $866.29
$2.26M
20% of stake
Nov 7, 2025No plan
William Richard Wilcox
Executive Vice President · sold 2,400 at $930.13
$2.23M
55% of stake
Oct 24, 2025No plan
Tiffany Marie Barbre
Other · sold 1,239 at $934.62
$1.16M
19% of stake
Oct 24, 2025No plan
Claudine Adamo
Executive Vice President · sold 2,700 at $935.68
$2.53M
28% of stake
Sep 29, 2025No plan
Russell D Miller
Sr. Executive Vice President · sold 3,381 at $915.00
$3.09M
26% of stake
Sep 29, 2025No plan
Caton Frates
Executive Vice President · sold 1,540 at $910.02
$1.4M
14% of stake
Aug 20, 2025No plan
Teresa A. Jones
Executive Vice President · sold 600 at $992.05
595K
20% of stake
Jul 14, 2025No plan
Yoram Rubanenko
Executive Vice President · sold 4,000 at $974.96
$3.9M
41% of stake
Jun 18, 2025No plan
Susan L Decker
Director · sold 547 at avg $980.00
536K
4.5% of stake
Jun 9, 2025No plan
Patrick J Callans
Executive Vice President · sold 3,000 at $1,002.77
$3.01M
4.9% of stake
Jun 6, 2025No plan
Pierre Riel
Executive Vice President · sold 2,000 at $1,014.15
$2.03M
20% of stake
Apr 17, 2025No plan
James C Klauer
Executive Vice President · sold 4,000 at $981.07
$3.92M
8.3% of stake
Mar 27, 2025No plan
Gary Millerchip
Executive Vice President · sold 1,100 at $940.01
$1.03M
9.0% of stake
Mar 24, 2025No plan
Claudine Adamo
Executive Vice President · sold 900 at $922.56
830K
11% of stake
Mar 18, 2025No plan
Caton Frates
Executive Vice President · sold 850 at $900.25
765K
9.7% of stake
Mar 11, 2025No plan
Roland Michael Vachris
President and CEO · sold 3,600 at $931.00
$3.35M
8.1% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch COST, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Held by ETFs

COST is in 425 US ETFs. The largest of them, with COST's weight in each:

Spot a number that looks wrong? Check it in COST's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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