SELF ADAM WEBB

PrivateCIK: 2150337
Location

ISSAQUAH, WA

SELF ADAM WEBB (Executive Vice President) reported 5 transactions at COSTCO WHOLESALE CORP /NEW

Review the transaction codes below to understand the nature of each event.

InsiderSELF ADAM WEBBCIK 2150337
→
Officer· Executive Vice President
Since Aug 2026
-259.77
Net shares
Net seller
$264.5K
Total sold
0
Open market trades
0B · 0S
5
Total transactions
259.77 disposed
Non-Derivative Transactions5

Common Stock

Direct
F · Tax Withholding

Shares

−61.66

Price / share

$1.02K

Trade value

$62.79K

% of position

1.7%
10/22/2026
3.53K→3.47K

Common Stock

Direct
F · Tax Withholding

Shares

−64.21

Price / share

$1.02K

Trade value

$65.38K

% of position

1.9%
10/22/2026
3.47K→3.40K

Common Stock

Direct
F · Tax Withholding

Shares

−57.33

Price / share

$1.02K

Trade value

$58.38K

% of position

1.7%
10/22/2026
3.40K→3.35K

Common Stock

Direct
F · Tax Withholding

Shares

−36.04

Price / share

$1.02K

Trade value

$36.70K

% of position

1.1%
10/22/2026
3.35K→3.31K

Common Stock

Direct
F · Tax Withholding

Shares

−40.52

Price / share

$1.02K

Trade value

$41.25K

% of position

1.2%
10/22/2026
3.31K→3.27K
Total

Net shares

−259.77

Net value

-$264.50K

Derivative Transactions0
No derivative transactions reported
SELF ADAM WEBB — Insider Transaction (Form 4) Filed Oct 27, 2026 | Finecho