The Costco Wholesale Corporation line shows up 181 times in the congressional disclosure record between 2013 and 2026, filed by 59 members: 114 purchases against 67 sales. On balance the chamber has been net buyers, and the purchases sit up 9.2% against the latest close.
*Purchases only, weighted by the midpoint of each disclosed dollar band and marked to the latest close. Filings report a range, never a share count, so this follows the stock rather than anyone's position size.
Reported a COST purchase in filings from the last 90 days, newest first. 1 member.
Members ranked by how their reported COST purchases have moved since, over roughly the last three years, weighted by disclosed band midpoint and marked to the latest close.
| Date | Member | Type | Amount | Est. price | Latest close | Return |
|---|---|---|---|---|---|---|
| 2016-04-26 | Debbie Dingell | BUY | $15K–$50K | $152.60 | $915.74 2026-09-04 | +500.1% |
| 2016-04-19 | James B. Renacci | BUY | $1K–$15K | $153.68 | $1005.16 2026-10-26 | +554.1% |
| 2016-03-08 | Lamar Smith | BUY | $1K–$15K | $150.95 | $915.74 2026-09-04 | +506.6% |
| 2016-01-26 | Ed Whitfield | BUY | $1K–$15K | $148.50 | $915.74 2026-09-04 | +516.7% |
| 2016-01-21 | Ed Whitfield | BUY | $1K–$15K | $150.38 | $915.74 2026-09-04 | +508.9% |
| 2016-01-13 | Pete Sessions | BUY | $1K–$15K | $152.12 | $915.74 2026-09-04 | +502.0% |
| 2015-12-15 | Michael T. McCaul | SELL | $1K–$15K | $161.29 | $1005.16 2026-10-26 | -523.2% exit |
| 2015-12-15 | Michael T. McCaul | SELL | $1K–$15K | $161.29 | $1005.16 2026-10-26 | -523.2% exit |
| 2015-09-03 | Kenny Marchant | BUY | $1K–$15K | $140.48 | $1005.16 2026-10-26 | +615.5% |
| 2015-08-24 | David E. Price | BUY | $1K–$15K | $132.97 | $1005.16 2026-10-26 | +655.9% |
| 2015-07-30 | James B. Renacci | BUY | $1K–$15K | $145.30 | $1005.16 2026-10-26 | +591.8% |
| 2015-07-21 | Brad Ashford | SELL | $1K–$15K | $144.94 | $1005.16 2026-10-26 | -593.5% exit |
| 2015-07-15 | Kenny Marchant | BUY | $1K–$15K | $143.63 | $1005.16 2026-10-26 | +599.8% |
| 2015-07-09 | James B. Renacci | BUY | $1K–$15K | $139.45 | $1005.16 2026-10-26 | +620.8% |
| 2015-07-07 | Alan S. Lowenthal | BUY | $1K–$15K | $140.50 | $1005.16 2026-10-26 | +615.4% |
| 2015-07-02 | Brad Ashford | BUY | $1K–$15K | $136.39 | $1005.16 2026-10-26 | +637.0% |
| 2015-04-24 | Pat Roberts | BUY | $1K–$15K | $148.12 | $1005.16 2026-10-26 | +578.6% |
| 2015-04-20 | Alan S. Lowenthal | BUY | $15K–$50K | $146.31 | $1005.16 2026-10-26 | +587.0% |
| 2015-04-14 | Lamar Smith | SELL | $1K–$15K | $149.52 | $1005.16 2026-10-26 | -572.3% exit |
| 2015-03-16 | K. Michael Conaway | SELL | $1K–$15K | $149.99 | $1005.16 2026-10-26 | -570.1% exit |
| 2015-03-06 | Pat Roberts | BUY | $1K–$15K | $149.54 | $1005.16 2026-10-26 | +572.2% |
| 2015-02-15 | Kenny Marchant | BUY | $1K–$15K | $147.10 | $1005.16 2026-10-26 | +583.3% |
| 2015-02-05 | David Kustoff | BUY | $1K–$15K | $149.09 | $1005.16 2026-10-26 | +574.2% |
| 2015-01-05 | James B. Renacci | BUY | $1K–$15K | $140.00 | $1005.16 2026-10-26 | +618.0% |
| 2014-12-10 | Susan A. Davis | SELL | $15K–$50K | $140.25 | $1005.16 2026-10-26 | -616.7% exit |
| 2014-08-26 | Pat Roberts | SELL | $1K–$15K | $121.09 | $1005.16 2026-10-26 | -730.1% exit |
| 2014-08-26 | Pat Roberts | SELL | $1K–$15K | $121.09 | $1005.16 2026-10-26 | -730.1% exit |
| 2014-03-07 | David B. McKinley | BUY | $1K–$15K | $113.50 | $1005.16 2026-10-26 | +785.6% |
| 2013-02-21 | JAMES M INHOFE | BUY | $1K–$15K | $100.69 | $1005.16 2026-10-26 | +898.3% |
| Mike Kelly | BUY | $1K–$15K | — | — | — | |
| Mike Kelly | BUY | $1K–$15K | — | — | — |
Buys are marked to the latest close and treated as open. A sell tagged rt closes an earlier disclosed buy in the same name. exit shows how the stock moved after the member sold.
59 members of the U.S. House and Senate have disclosed Costco Wholesale Corporation transactions under the STOCK Act — 114 purchases and 67 sales. The full member-by-member breakdown, with dates and dollar ranges, is in the table above.
1 member disclosed a COST purchase in the last 90 days — most recently Rohit Khanna on 2026-09-11. See the "Lawmakers who bought COST recently" section above for the dated list.
Notional-weighted, lawmakers' disclosed COST buys are up 9.2% versus the latest close of $1005.16. Each trade's own return — and realized round-trips on matched sells — is in the Return column.
Yes. Under the 2012 STOCK Act, members of Congress may buy and sell individual stocks but must publicly disclose each transaction within 45 days. Bargo surfaces those filings so you can see who traded COST and how it performed.