Who in Congress trades COST?
Costco Wholesale Corporation
8 members of Congress have disclosed 26 COST transactions between August 26, 2014 – March 27, 2026. Under the STOCK Act these must be filed within 45 days of the trade.
Price and trade timing
When members traded COST, against its weekly closing price.
Markers sit on the date the trade happened; it was disclosed up to 45 days later. Prices are weekly closes adjusted for splits and dividends. Shown as context for the public record — we do not calculate returns or performance for any member, and none of this is investment advice.
Who trades it most
COST trades by year
Every disclosed COST trade
Newest first, through July 24, 2026. Each row links to the original filing. 1 of these were filed after the 45-day deadline.
| Member | Type | Amount | Traded | Filing |
|---|---|---|---|---|
| Alan ArmstrongR | BuyLate | $1,001 - $15,000 | March 27, 2026 | View |
| Pat RobertsR | Buy | $15,001 - $50,000 | November 24, 2020 | View |
| Pat RobertsR | Sell | $15,001 - $50,000 | November 4, 2020 | View |
| Jerry MoranR | Sell | $1,001 - $15,000 | August 21, 2020 | View |
| Ron WydenD | Buy | $15,001 - $50,000 | July 13, 2020 | View |
| Ron WydenD | Buy | $15,001 - $50,000 | June 24, 2020 | View |
| David PerdueR | Sell | $50,001 - $100,000 | April 14, 2020 | View |
| David PerdueR | Sell | $15,001 - $50,000 | April 14, 2020 | View |
| Kelly LoefflerR | Sell | $100,001 - $250,000 | April 7, 2020 | View |
| Jerry MoranR | Sell | $1,001 - $15,000 | September 25, 2019 | View |
| Jack ReedD | Sell | $1,001 - $15,000 | February 28, 2019 | View |
| Jack ReedD | Sell | $1,001 - $15,000 | February 4, 2019 | View |
| Jerry MoranR | Buy | $1,001 - $15,000 | December 19, 2018 | View |
| Jerry MoranR | Buy | $1,001 - $15,000 | December 6, 2018 | View |
| Jack ReedD | Sell | $1,001 - $15,000 | March 9, 2018 | View |
| Pat RobertsR | Sell | $15,001 - $50,000 | February 5, 2018 | View |
| Sheldon WhitehouseD | Sell | $15,001 - $50,000 | January 17, 2018 | View |
| David PerdueR | Buy | $1,001 - $15,000 | October 30, 2017 | View |
| David PerdueR | Buy | $15,001 - $50,000 | June 16, 2017 | View |
| David PerdueR | Buy | $1,001 - $15,000 | March 22, 2017 | View |
| Pat RobertsR | Buy | $15,001 - $50,000 | November 14, 2016 | View |
| Pat RobertsR | Sell | $15,001 - $50,000 | July 8, 2016 | View |
| David PerdueR | Buy | $1,001 - $15,000 | May 5, 2016 | View |
| Pat RobertsR | Buy | $1,001 - $15,000 | April 24, 2015 | View |
| Pat RobertsR | Buy | $1,001 - $15,000 | March 6, 2015 | View |
| Pat RobertsR | Sell | $1,001 - $15,000 | August 26, 2014 | View |
Public STOCK Act disclosures (U.S. Senate eFD and House Clerk), shown for transparency and education — not investment advice, and not a statement of what any member currently owns. Back to the full Congress trades tracker.