Costco COST
Costco is the 22nd largest S&P 500 company by market cap, worth $445 billion. 10 directors have filed with the SEC in the last 12 months (who counts), 1 of them an executive. 14 other officers are on file. At 30 Jun 2026, Vanguard was its largest institutional holder, with 9.9% of the company.
- CEO
- Roland Michael Vachris
- Sector
- Consumer Staples
- Sub-industry
- Consumer Staples Merchandise Retail
- Headquarters
- Issaquah, Washington
- Founded
- 1976
- More
- Wikipedia
- Market cap
- $445B
- 22nd largest, 23 Oct 2026 close
- Price to sales
- 1.5
- Market cap over revenue
- Market cap per employee
- $1.3M
- Market cap over employees
- Connections
- 2
- S&P 500 companies sharing a director or officer
Largest institutional holders
Each fund group's share of Costco. Where a company has several share classes, the share is of its total value.
13F filings for the quarter to 30 Jun 2026
Board and officers
2 people here also hold roles at other S&P 500 companies.
Roles filed up to 30 Sep 2026
| Name | Title |
|---|---|
| Directors (10) | |
| Roland Michael VachrisPresident and CEOLast filed 24 Oct 2025 | |
| Susan L. DeckerDirectorLast filed 20 Jan 2026 | |
| Kenneth D. DenmanDirectorAlso at Motorola Solutions | |
| Helena FoulkesDirectorLast filed 24 Oct 2025 | |
| Hamilton E. JamesDirectorLast filed 24 Oct 2025 | |
| Sarah Sally JewellDirectorLast filed 24 Oct 2025 | |
| Jeffrey S. RaikesDirector | |
| Gina Marie RaimondoDirectorLast filed 20 Jan 2026 | |
| John W. StantonDirectorAlso at MicrosoftLast filed 24 Oct 2025 | |
| Mary Agnes WilderotterDirectorLast filed 24 Oct 2025 | |
| Officers (14) | |
| Claudine AdamoExecutive Vice PresidentLast filed 30 Sep 2026 | |
| Patrick J. CallansExecutive Vice PresidentLast filed 24 Oct 2025 | |
| Caton FratesSr. Executive Vice PresidentLast filed 30 Sep 2026 | |
| Sarah Catherine GeorgeExecutive Vice PresidentLast filed 15 May 2026 | |
| Teresa A. JonesExecutive Vice PresidentLast filed 14 Sep 2026 | |
| James C. KlauerExecutive Vice PresidentLast filed 14 Sep 2026 | |
| Russell D. MillerSr. Executive Vice PresidentLast filed 12 Jan 2026 | |
| Gary MillerchipExecutive Vice PresidentLast filed 13 Mar 2026 | |
| Javier PolitExecutive Vice PresidentLast filed 31 Dec 2025 | |
| Pierre RielExecutive Vice PresidentLast filed 14 Sep 2026 | |
| Yoram RubanenkoExecutive Vice PresidentLast filed 14 Sep 2026 | |
| Adam Webb SelfExecutive Vice PresidentLast filed 30 Sep 2026 | |
| John Christopher SullivanExecutive VPLast filed 24 Oct 2025 | |
| William Richard WilcoxExecutive Vice PresidentLast filed 14 Sep 2026 | |
Companies that share people with Costco
Each person's title here, then at the other company.
- Microsoft MSFT
- John W. Stanton: Director here, Director there
- Motorola Solutions MSI
- Kenneth D. Denman: Director here, Director there
Costco's market cap since December 2008
Weekly, up to 23 Oct 2026
| Week ending | Market cap |
|---|---|
| 23 Oct 2026 | $445B |
| 26 Dec 2025 | $388B |
| 27 Dec 2024 | $417B |
| 29 Dec 2023 | $293B |
| 30 Dec 2022 | $203B |
| 31 Dec 2021 | $252B |
| 25 Dec 2020 | $162B |
| 27 Dec 2019 | $130B |
| 28 Dec 2018 | $89.0B |
| 29 Dec 2017 | $81.7B |
| 30 Dec 2016 | $70.3B |
| 25 Dec 2015 | $71.1B |
| 26 Dec 2014 | $63.2B |
| 27 Dec 2013 | $52.1B |
| 28 Dec 2012 | $42.2B |
| 30 Dec 2011 | $36.2B |
| 31 Dec 2010 | $31.5B |
| 25 Dec 2009 | $26.5B |
| 26 Dec 2008 | $22.3B |
Download Costco's data as JSON, with the weekly market caps in billions of dollars from 5 Dec 2008.
Workforce
Headcount at 30 Aug 2026
- Employees
- 355,000
- In the US
- 2,026
At the end of 2026, we employed 355,000 employees worldwide.
Insider trades
Open-market buys and sales by directors and officers. Grants, option exercises and shares withheld for tax are left out.
Trades from 30 Sep 2025 to 30 Sep 2026
Directors and officers sold $16.1 million of stock in 13 sales and made no open-market purchases in the 12 months to 30 Sep 2026.
| Date | Person | Value |
|---|---|---|
| 29 Sep 2026Sale | Claudine AdamoExecutive Vice President | $2.0M |
| 29 Sep 2026Sale | Caton FratesSr. Executive Vice President | $733K |
| 23 Jun 2026Sale | Kenneth D. DenmanDirector | $847K |
| 1 Apr 2026Sale | Caton FratesSr. Executive Vice President | $695K |
| 9 Mar 2026Sale | Claudine AdamoExecutive Vice President | $732K |
| 21 Jan 2026Sale | Teresa A. JonesExecutive Vice President | $838K |
| 16 Jan 2026Sale | Susan L. DeckerDirector | $437K |
| 14 Jan 2026Sale | James C. KlauerExecutive Vice President | $1.4M |
| 9 Jan 2026Sale | Russell D. MillerSr. Executive Vice President | $1.4M |
| 30 Dec 2025Sale | Javier PolitExecutive Vice President | $482K |
Showing 10 of 13 trades
Trades by members of Congress and officials
Trades members of Congress and senior executive branch officials disclosed, including their families'. Amounts are filed as ranges.
Trades from 20 Oct 2023 to 20 Oct 2026
28 people disclosed 55 purchases and 45 sales of Costco stock since October 2023.
| Date | Member or official | Amount |
|---|---|---|
| 25 Sep 2026 | Rohit KhannaHouse, D-CA 路 Bought | $1K to $15K |
| 18 Sep 2026 | Richard W. AllenHouse, R-GA 路 Sold | $1K to $15K |
| 11 Sep 2026 | Rohit KhannaHouse, D-CA 路 Bought | $1K to $15K |
| 4 Sep 2026 | Rohit KhannaHouse, D-CA 路 Sold | $1K to $15K |
| 24 Aug 2026 | Rohit KhannaHouse, D-CA 路 Bought | $1K to $15K |
| 30 Jul 2026 | Richard Dean McCormickHouse, R-GA 路 Sold | $1K to $15K |
| 23 Jul 2026 | Donald J TrumpPresident 路 Sold | $100K to $250K |
| 20 Jul 2026 | Donald J TrumpPresident 路 Sold | $1M to $5M |
| 20 Jul 2026 | Rohit KhannaHouse, D-CA 路 Sold | $100K to $250K |
| 17 Jul 2026 | Donald J TrumpPresident 路 Sold | $15K to $50K |
Showing 10 of 100 trades
Not on file: no WARN layoff notices under its own name since October 2023.