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CIK 0000909832 · Large accelerated filer

COSTCO WHOLESALE CORP /NEW

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Ticker
COST
Exchange
Nasdaq
Industry
Retail-Variety Stores
FY end
Aug 30
Incorporated
WA
Entity type
operating
EIN
911223280
Phone
4253138100
Business address
999 LAKE DRIVE, ISSAQUAH, WA, 98027-
Former names
COSTCO COMPANIES INC, PRICE/COSTCO INC
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$4,777,958
in 4 filings

Net −$4,777,958. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. Adamo Claudine −$2.0M Executive Vice President sold 24% of stake
  2. Wilcox William Richard −$1.1M Executive Vice President sold 26% of stake
  3. Jones Teresa A. −$976K Executive Vice President sold 14% of stake
  4. Frates Caton −$733K Sr. Executive Vice President sold 9% of stake

Reading 100 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2025-10-22 JAMES HAMILTON E Director Grant or award +286 55,537.94
2025-10-22 Foulkes Helena Director Grant or award +286 1,086.8
2025-10-22 DENMAN KENNETH D Director Grant or award +286 5,988.94
2025-10-22 DECKER SUSAN L Director Grant or award +286 11,816.94
2025-09-29 Miller Russell D Sr. Executive Vice President Sale −3,381 $915.00 $3.1M 9,740
2025-09-29 Frates Caton Executive Vice President Sale −1,540 $910.02 $1.4M 9,283.69
2025-09-23 Miller Russell D Sr. Executive Vice President Gift −2,918 1.93
2025-09-23 Miller Russell D Sr. Executive Vice President Gift +2,918 13,120
2025-09-10 Rubanenko Yoram Executive Vice President Grant or award +4,219 9,993.03
2025-09-10 Rubanenko Yoram Executive Vice President Shares withheld for taxes −1,745.91 $956.29 $1.7M 8,247.12
2025-09-10 Riel Pierre Executive Vice President Grant or award +4,654 12,864.25
2025-09-10 Riel Pierre Executive Vice President Shares withheld for taxes −1,608.36 $956.29 $1.5M 11,255.89
2025-09-10 Miller Russell D Sr. Executive Vice President Grant or award +4,654 4,655.01
2025-09-10 Miller Russell D Sr. Executive Vice President Shares withheld for taxes −1,735.09 $956.29 $1.7M 2,919.93
2025-09-10 Klauer James C Executive Vice President Grant or award +4,219 48,212.62
2025-09-10 Klauer James C Executive Vice President Shares withheld for taxes −958.29 $956.29 $916K 47,254.34
2025-09-10 Jones Teresa A. Executive Vice President Grant or award +4,219 6,581.13
2025-09-10 Jones Teresa A. Executive Vice President Shares withheld for taxes −1,503.32 $956.29 $1.4M 5,077.8
2025-09-10 Frates Caton Executive Vice President Grant or award +4,219 12,094.77
2025-09-10 Frates Caton Executive Vice President Shares withheld for taxes −1,271.08 $956.29 $1.2M 10,823.69

Page 8 of 90 · 1,795 trades