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NasdaqGS · Consumer Staples · Holders

Costco Wholesale Corp (COST) Institutional Ownership & Insider Trading History

Recent insider purchases and sales for COST from Form 4 filings. Institutional holdings surface here when ownership sources publish.

Section freshness

Price Jun 26, 2:41 PM EDT · Statements May 30, 8:00 PM EDT

Source timingDetails

Data freshness

Prices update fastest. Fundamentals, analyst data, and news update on their own schedules, so check these timestamps before comparing signals.

Price time means the latest available trade or regular-market close. Other times show when that section was checked or published.

PriceLive
Last traded •
Source: Market data provider
Fundamentalsevery 1 day
Provider checked •
Source: Market data provider
Analystevery 1 hr
Provider checked •
Source: Market data provider
Newsevery 15 min
Latest item •
Source: Market data provider

Ownership read

COST insider sentiment: Net selling.

15 sales and 0 purchases appear in the recent Form 4 filings. Use the filters below to separate real buying and selling from option exercises, gifts, awards, and tax withholding.

Review insider tradesView institutions

Insider flow

COST

Purchases—
Sales139.88K

Directional bars ignore awards, gifts, conversions, and tax withholding rows.

Top holder

—

Institutional data pending

Insider stance

Net selling

$130.42M sold / — bought

Latest filing

Apr 1, 2026

Most recent holder or insider filing date

Filings shown

94

0 holder / 94 insider

Holder rows
Pending
Market data source
Latest filing
Apr 1, 2026
Most recent holder or insider filing date
Increased / initiated
Pending
0 decreased
Insider rows
94
Market data source

Recent insider transactions

Costco Wholesale Corp (COST) Form 4 filings

Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.

Frates Caton

SaleOpen-market or direct sale reported on Form 4.
Shares
5.82K
% company
<0.01%
Price
$993.00
Value
$5,774,295

Filed Apr 1, 2026

George Sarah Catherine

IProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Shares
—
% company
—
Price
$991.21
Value
Not reported

Filed Mar 12, 2026

MILLERCHIP GARY

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
15.46K
% company
<0.01%
Price
$992.23
Value
$15,344,837

Filed Mar 11, 2026

Adamo Claudine

SaleOpen-market or direct sale reported on Form 4.
Shares
6.12K
% company
<0.01%
Price
$1,003
Value
$6,139,492

Filed Mar 9, 2026

Jones Teresa A.

GiftGift transfer. Usually non-cash and not an open-market sale.
Shares
3.93K
% company
<0.01%
Price
Non-cash
Value
Non-cash

Filed Jan 27, 2026

RAIKES JEFFREY S

GiftGift transfer. Usually non-cash and not an open-market sale.
Shares
11.29K
% company
<0.01%
Price
Non-cash
Value
Non-cash

Filed Jan 27, 2026

Jones Teresa A.

SaleOpen-market or direct sale reported on Form 4.
Shares
4.23K
% company
<0.01%
Price
$986.26
Value
$4,169,893

Filed Jan 21, 2026

Raimondo Gina Marie

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
215
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Jan 16, 2026

DECKER SUSAN L

SaleOpen-market or direct sale reported on Form 4.
Shares
8.53K
% company
<0.01%
Price
$955.00
Value
$8,148,060

Filed Jan 16, 2026

Klauer James C

SaleOpen-market or direct sale reported on Form 4.
Shares
44.84K
% company
0.01%
Price
$939.00
Value
$42,101,943

Filed Jan 14, 2026

Miller Russell D

SaleOpen-market or direct sale reported on Form 4.
Shares
8.24K
% company
<0.01%
Price
$916.32
Value
$7,550,477

Filed Jan 9, 2026

POLIT JAVIER

SaleOpen-market or direct sale reported on Form 4.
Shares
10.19K
% company
<0.01%
Price
$862.90
Value
$8,792,900

Filed Dec 30, 2025

Showing 12 of 94 matching Form 4 rows. Percent of company uses current shares outstanding when available.Load more insiders

Frequently asked

Common questions.

Who are the largest COST shareholders?

Costco Wholesale Corp (COST) institutional holders are ranked by reported share count when ownership data publishes filing rows.

What is institutional ownership of COST?

Costco Wholesale Corp (COST) institutional ownership appears when filing-based market data returns holder rows. TECHi does not fill unavailable ownership fields with placeholder shareholders.

Where can I see Costco Wholesale Corp insider transactions?

Costco Wholesale Corp (COST) has 94 Form 4 insider transactions on file, most recently on Apr 1, 2026, separated into purchases, sales, option exercises, awards, gifts, and tax withholding so administrative transactions are distinguished from open-market trades.

Are COST insiders buying or selling?

Recent COST insider activity reads Net selling: 15 sales and 0 purchases. Awards, gifts, conversions, and tax withholding are listed separately because they do not carry the same signal as open-market trades.

Who is the most active COST insider?

Callans Patrick J is the most active COST insider by absolute share movement, with 430,607 shares moving across the filing history. Review the action labels before treating that activity as buying or selling.