56 U.S. lawmakers have disclosed 162 Costco Wholesale Corporation trades under the STOCK Act — 105 buys and 57 sells between 2013 and 2026. Congress has been net buyers of COST, and their disclosed buys are up 25.5% versus the latest close.
*Notional-weighted price return on lawmakers' disclosed buys of COST, marked to the latest close — per-share (share counts aren't disclosed).
1 member disclosed a COST purchase in the last 90 days (newest first).
Lawmakers ranked by notional-weighted return on their disclosed COST buys (last ~3y), marked to the latest close.
| Date | Member | Type | Amount | Est. price | Latest close | Return |
|---|---|---|---|---|---|---|
| 2018-03-08 | Mike Kelly | BUY | $1K–$15K | $185.69 | $961.10 2026-08-14 | +417.6% |
| 2018-02-05 | Pat Roberts | SELL | $15K–$50K | $182.77 | $961.10 2026-08-14 | +23.4% rt |
| 2018-01-17 | Sheldon Whitehouse | SELL | $15K–$50K | $192.29 | $961.10 2026-08-14 | -399.8% exit |
| 2017-10-30 | David A Perdue , Jr | BUY | $1K–$15K | $160.23 | $961.10 2026-08-14 | +499.8% |
| 2017-09-18 | Pete Sessions | SELL | $1K–$15K | $160.91 | $961.10 2026-08-14 | +5.8% rt |
| 2017-09-14 | David B. McKinley | BUY | $15K–$50K | $162.37 | $961.10 2026-08-14 | +491.9% |
| 2017-08-10 | James B. Renacci | BUY | $1K–$15K | $156.64 | $961.10 2026-08-14 | +513.6% |
| 2017-08-07 | James B. Renacci | BUY | $15K–$50K | $156.95 | $961.10 2026-08-14 | +512.4% |
| 2017-08-07 | James B. Renacci | BUY | $1K–$15K | $156.95 | $961.10 2026-08-14 | +512.4% |
| 2017-08-03 | James B. Renacci | SELL | $1K–$15K | $157.91 | $961.10 2026-08-14 | +12.8% rt |
| 2017-08-03 | James B. Renacci | BUY | $1K–$15K | $157.91 | $961.10 2026-08-14 | +508.6% |
| 2017-06-29 | Pete Sessions | BUY | $1K–$15K | $158.68 | $961.10 2026-08-14 | +505.7% |
| 2017-06-19 | Lamar Smith | SELL | $1K–$15K | $164.34 | $961.10 2026-08-14 | +12.0% rt |
| 2017-06-19 | Pete Sessions | BUY | $1K–$15K | $164.34 | $961.10 2026-08-14 | +484.8% |
| 2017-06-16 | David A Perdue , Jr | BUY | $15K–$50K | $167.11 | $961.10 2026-08-14 | +475.1% |
| 2017-06-16 | Alan S. Lowenthal | SELL | $15K–$50K | $167.11 | $961.10 2026-08-14 | -475.1% exit |
| 2017-06-01 | Lamar Smith | SELL | $1K–$15K | $180.63 | $961.10 2026-08-14 | +19.7% rt |
| 2017-05-15 | James B. Renacci | BUY | $1K–$15K | $171.57 | $961.10 2026-08-14 | +460.2% |
| 2017-05-10 | Alan S. Lowenthal | SELL | $1K–$15K | $171.35 | $961.10 2026-08-14 | +22.0% rt |
| 2017-03-22 | David A Perdue , Jr | BUY | $1K–$15K | $167.68 | $961.10 2026-08-14 | +473.2% |
| 2016-11-30 | Susan A. Davis | SELL | $15K–$50K | $150.11 | $961.10 2026-08-14 | -540.3% exit |
| 2016-11-14 | Pat Roberts | BUY | $15K–$50K | $152.00 | $961.10 2026-08-14 | +532.3% |
| 2016-11-10 | Lamar Smith | BUY | $1K–$15K | $146.70 | $961.10 2026-08-14 | +555.1% |
| 2016-11-04 | Debbie Dingell | BUY | $1K–$15K | $142.24 | $961.10 2026-08-14 | +575.7% |
| 2016-10-06 | Pete Sessions | BUY | $1K–$15K | $149.47 | $961.10 2026-08-14 | +543.0% |
| 2016-10-04 | Pete Sessions | BUY | $1K–$15K | $150.48 | $961.10 2026-08-14 | +538.7% |
| 2016-10-03 | Pete Sessions | BUY | $1K–$15K | $151.01 | $961.10 2026-08-14 | +536.5% |
| 2016-09-12 | Alan S. Lowenthal | SELL | $1K–$15K | $151.69 | $961.10 2026-08-14 | +3.7% rt |
| 2016-07-08 | Pat Roberts | SELL | $15K–$50K | $165.44 | $961.10 2026-08-14 | +10.6% rt |
| 2016-05-19 | James B. Renacci | BUY | $1K–$15K | $142.70 | $961.10 2026-08-14 | +573.5% |
| 2016-05-06 | Ed Whitfield | BUY | $1K–$15K | $146.44 | $961.10 2026-08-14 | +556.3% |
| 2016-05-06 | David E. Price | BUY | $1K–$15K | $146.44 | $961.10 2026-08-14 | +556.3% |
| 2016-05-05 | David A Perdue , Jr | BUY | $1K–$15K | $147.84 | $961.10 2026-08-14 | +550.1% |
| 2016-04-26 | Debbie Dingell | BUY | $15K–$50K | $152.60 | $961.10 2026-08-14 | +529.8% |
| 2016-04-19 | James B. Renacci | BUY | $1K–$15K | $153.68 | $961.10 2026-08-14 | +525.4% |
| 2016-03-08 | Lamar Smith | BUY | $1K–$15K | $150.95 | $961.10 2026-08-14 | +536.7% |
| 2016-01-26 | Ed Whitfield | BUY | $1K–$15K | $148.50 | $961.10 2026-08-14 | +547.2% |
| 2016-01-21 | Ed Whitfield | BUY | $1K–$15K | $150.38 | $961.10 2026-08-14 | +539.1% |
| 2016-01-13 | Pete Sessions | BUY | $1K–$15K | $152.12 | $961.10 2026-08-14 | +531.8% |
| 2015-09-03 | Kenny Marchant | BUY | $1K–$15K | $140.48 | $961.10 2026-08-14 | +584.1% |
| 2015-08-24 | David E. Price | BUY | $1K–$15K | $132.97 | $961.10 2026-08-14 | +622.8% |
| 2015-07-30 | James B. Renacci | BUY | $1K–$15K | $145.30 | $961.10 2026-08-14 | +561.5% |
| 2015-07-21 | Brad Ashford | SELL | $1K–$15K | $144.94 | $961.10 2026-08-14 | +6.3% rt |
| 2015-07-15 | Kenny Marchant | BUY | $1K–$15K | $143.63 | $961.10 2026-08-14 | +569.1% |
| 2015-07-09 | James B. Renacci | BUY | $1K–$15K | $139.45 | $961.10 2026-08-14 | +589.2% |
| 2015-07-07 | Alan S. Lowenthal | BUY | $1K–$15K | $140.50 | $961.10 2026-08-14 | +584.1% |
| 2015-07-02 | Brad Ashford | BUY | $1K–$15K | $136.39 | $961.10 2026-08-14 | +604.7% |
| 2015-04-24 | Pat Roberts | BUY | $1K–$15K | $148.12 | $961.10 2026-08-14 | +548.9% |
| 2015-04-20 | Alan S. Lowenthal | BUY | $15K–$50K | $146.31 | $961.10 2026-08-14 | +556.9% |
| 2015-04-14 | Lamar Smith | SELL | $1K–$15K | $149.52 | $961.10 2026-08-14 | -542.8% exit |
Return: buys marked to the latest close (open); sells tagged rt are realized round-trips vs a prior disclosed buy; exit = timing (stock move after the sale, seller's perspective).
56 members of the U.S. House and Senate have disclosed Costco Wholesale Corporation transactions under the STOCK Act — 105 purchases and 57 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 Dan Newhouse on 2026-07-10. See the "Lawmakers who bought COST recently" section above for the dated list.
Notional-weighted, lawmakers' disclosed COST buys are up 25.5% versus the latest close of $961.10. 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.