Stock Scorer

Costco Wholesale Corp (COST) · Insider trading

What Costco Wholesale's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.

Bought, 12 months
$0
0 insiders, 0 trades
Sold, 12 months
$17.26M
10 insiders, 0% under a plan
Net, 12 months
−$17.26M
bought less sold
Latest filing
2026-09-30
filings read to 2026-10-19

Bought and sold at the market, by month

Two years. Purchases above the line, sales below, in dollars.

2025-01 2025-03: $5.98M sold 2025-04: $3.92M sold 2025-06: $5.57M sold 2025-07: $3.90M sold 2025-07 2025-08: $595,230 sold 2025-09: $4.50M sold 2025-10: $3.68M sold 2025-11: $2.23M sold 2025-12: $2.26M sold 2026-01: $4.06M sold 2026-01 2026-03: $732,205 sold 2026-04: $695,100 sold 2026-06: $847,343 sold 2026-07 2026-09: $2.75M sold
Bought Sold Largest month: $5.98M

Who traded, two years

InsiderBoughtSold TradesLast tradeHolds after
Adamo ClaudineExecutive Vice President – $6.10M 4 2026-09-29 7,134
Klauer James CExecutive Vice President – $5.33M 2 2026-01-14 44,837
Miller Russell DSr. Executive Vice President – $4.47M 2 2026-01-09 –
Rubanenko YoramExecutive Vice President – $3.90M 1 2025-07-14 5,774
Frates CatonSr. Executive Vice President – $3.60M 4 2026-09-29 7,912
Vachris Roland MichaelDirector, President and CEO – $3.35M 1 2025-03-11 41,077
Callans Patrick JExecutive Vice President – $3.01M 1 2025-06-09 58,543
Polit JavierExecutive Vice President – $2.26M 2 2025-12-30 10,190
Wilcox William RichardExecutive Vice President – $2.23M 1 2025-11-07 2,000
Jones Teresa A.Executive Vice President – $2.15M 3 2026-01-21 4,228
Riel PierreExecutive Vice President – $2.03M 1 2025-06-06 8,210
Galanti Richard ADirector, Executive Vice President – $1.27M 1 2024-10-24 27,400
Barbre Tiffany MarieOther – $1.16M 1 2025-10-24 5,155
Millerchip GaryExecutive Vice President – $1.03M 1 2025-03-27 11,165
Decker Susan LDirector – $973,448 3 2026-01-16 8,532
Denman Kenneth DDirector – $847,343 1 2026-06-23 4,779

Open-market purchases and sales

Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.

DateInsiderTradeShares PriceValueHolds afterFiling
2026-09-29 Adamo ClaudineExecutive Vice President Sale 2,200 915.93 $2.02M 7,134 Form 4
2026-09-29 Frates CatonSr. Executive Vice President Sale 801 915.93 $733,330 7,912 Form 4
2026-06-23 Denman Kenneth DDirector Sale 885 957.45 $847,343 4,779 Form 4
2026-04-01 Frates CatonExecutive Vice President Sale 700 993.00 $695,100 5,815 Form 4
2026-03-09 Adamo ClaudineExecutive Vice President Sale 730 1003.02 $732,205 6,121 Form 4
2026-01-21 Jones Teresa A.Executive Vice President Sale 850 986.26 $838,321 4,228 Form 4
2026-01-16 Decker Susan LDirector Sale 458 955.00 $437,390 8,532 Form 4
2026-01-14 Klauer James CExecutive Vice President Sale 1,500 939.00 $1.41M 44,837 Form 4
2026-01-09 Miller Russell DSr. Executive Vice President Saleindirect 1,500 916.32 $1.37M 8,240 Form 4
2025-12-30 Polit JavierExecutive Vice President Sale 558 862.90 $481,766 10,190 Form 4
2025-12-29 Polit JavierExecutive Vice President Sale 2,049 867.21 $1.78M 10,748 Form 4
2025-11-07 Wilcox William RichardExecutive Vice President Sale 2,400 930.13 $2.23M 2,000 Form 4
2025-10-24 Adamo ClaudineExecutive Vice President Sale 2,700 935.68 $2.53M 6,851 Form 4
2025-10-24 Barbre Tiffany MarieOther Sale 1,239 934.62 $1.16M 5,155 Form 4
2025-09-29 Miller Russell DSr. Executive Vice President Saleindirect 3,381 915.00 $3.09M 9,740 Form 4
2025-09-29 Frates CatonExecutive Vice President Sale 1,540 910.02 $1.40M 9,284 Form 4
2025-08-20 Jones Teresa A.Executive Vice President Sale 600 992.05 $595,230 2,362 Form 4
2025-07-14 Rubanenko YoramExecutive Vice President Sale 4,000 974.96 $3.90M 5,774 Form 4
2025-06-18 Decker Susan LDirector Sale 546 980.00 $535,080 11,532 Form 4
2025-06-18 Decker Susan LDirector Sale 1 978.40 $978 11,531 Form 4
2025-06-09 Callans Patrick JExecutive Vice President Sale 3,000 1002.77 $3.01M 58,543 Form 4
2025-06-06 Riel PierreExecutive Vice President Sale 2,000 1014.15 $2.03M 8,210 Form 4
2025-04-17 Klauer James CExecutive Vice President Sale 4,000 981.07 $3.92M 43,994 Form 4
2025-03-27 Millerchip GaryExecutive Vice President Sale 1,100 940.01 $1.03M 11,165 Form 4
2025-03-24 Adamo ClaudineExecutive Vice President Sale 900 922.56 $830,304 6,986 Form 4
2025-03-18 Frates CatonExecutive Vice President Sale 850 900.25 $765,212 7,876 Form 4
2025-03-11 Vachris Roland MichaelDirector, President and CEO Sale 3,600 931.00 $3.35M 41,077 Form 4
2024-10-24 Galanti Richard ADirector, Executive Vice President Sale 1,416 894.68 $1.27M 27,400 Form 4
2024-10-23 Jones Teresa A.Executive Vice President Sale 800 896.55 $717,240 2,961 Form 4

Grants, exercises and other transactions

Pay, tax and paperwork rather than a choice to trade at the market price. Two years.

94 × shares withheld for tax43 × grant or award14 × gift1 × discretionary trade
Show them
DateInsiderWhatShares PriceHolds afterFiling
2026-09-10 Adamo ClaudineExecutive Vice President Grant or award A +4,129 – 10,250 Form 4
2026-09-10 Adamo ClaudineExecutive Vice President Shares withheld for tax F −917 902.38 9,334 Form 4
2026-09-10 Frates CatonExecutive Vice President Grant or award A +4,552 – 10,367 Form 4
2026-09-10 Frates CatonExecutive Vice President Shares withheld for tax F −1,654 902.38 8,713 Form 4
2026-09-10 Jones Teresa A.Executive Vice President Grant or award A +4,129 – 8,057 Form 4
2026-09-10 Jones Teresa A.Executive Vice President Shares withheld for tax F −1,459 902.38 6,598 Form 4
2026-09-10 Klauer James CExecutive Vice President Grant or award A +4,129 – 48,966 Form 4
2026-09-10 Klauer James CExecutive Vice President Shares withheld for tax F −936 902.38 48,030 Form 4
2026-09-10 Riel PierreExecutive Vice President Grant or award A +4,552 – 15,808 Form 4
2026-09-10 Riel PierreExecutive Vice President Shares withheld for tax F −1,562 902.38 14,246 Form 4
2026-09-10 Rubanenko YoramExecutive Vice President Grant or award A +4,129 – 12,376 Form 4
2026-09-10 Rubanenko YoramExecutive Vice President Shares withheld for tax F −1,696 902.38 10,680 Form 4
2026-09-10 Wilcox William RichardExecutive Vice President Grant or award A +4,129 – 6,129 Form 4
2026-09-10 Wilcox William RichardExecutive Vice President Shares withheld for tax F −1,935 902.38 4,194 Form 4
2026-07-10 Raikes Jeffrey SDirector Gift G −5,249 – 6,044 Form 4
2026-03-12 George Sarah CatherineExecutive Vice President Discretionary trade I −642 991.21 0 Form 4
2026-03-11 Millerchip GaryExecutive Vice President Shares withheld for tax F −1,154 992.23 15,465 Form 4
2026-01-27 Jones Teresa A.Executive Vice President Gift G −300 – 3,928 Form 4
2026-01-27 Raikes Jeffrey SDirector Gift G −5,115 – 11,293 Form 4
2026-01-16 Raimondo Gina MarieDirector Grant or award A +215 – 215 Form 4
2025-12-19 Denman Kenneth DDirector Gift G −325 – 5,664 Form 4
2025-12-15 Decker Susan LDirector Gift G −2,827 – 8,990 Form 4
2025-11-10 Raikes Jeffrey SDirector Gift G −4,120 – 16,408 Form 4
2025-10-22 Decker Susan LDirector Grant or award A +286 – 11,817 Form 4
2025-10-22 Denman Kenneth DDirector Grant or award A +286 – 5,989 Form 4
2025-10-22 Foulkes HelenaDirector Grant or award A +286 – 1,087 Form 4
2025-10-22 James Hamilton eDirector Grant or award A +286 – 55,538 Form 4
2025-10-22 Jewell Sarah Mr SallyDirector Grant or award A +286 – 3,613 Form 4
2025-10-22 Raikes Jeffrey SDirector Grant or award A +286 – 20,528 Form 4
2025-10-22 Wilderotter Mary AgnesDirector Grant or award A +286 – 3,205 Form 4
2025-10-22 Stanton John WDirector Grant or award A +286 – 24,090 Form 4
2025-10-22 Adamo ClaudineExecutive Vice President Shares withheld for tax F −122 944.68 10,134 Form 4
2025-10-22 Adamo ClaudineExecutive Vice President Shares withheld for tax F −97 944.68 10,037 Form 4
2025-10-22 Adamo ClaudineExecutive Vice President Shares withheld for tax F −199 944.68 9,838 Form 4
2025-10-22 Adamo ClaudineExecutive Vice President Shares withheld for tax F −177 944.68 9,662 Form 4
2025-10-22 Adamo ClaudineExecutive Vice President Shares withheld for tax F −111 944.68 9,551 Form 4
2025-10-22 Callans Patrick JExecutive Vice President Shares withheld for tax F −240 944.68 61,572 Form 4
2025-10-22 Callans Patrick JExecutive Vice President Shares withheld for tax F −191 944.68 61,380 Form 4
2025-10-22 Callans Patrick JExecutive Vice President Shares withheld for tax F −199 944.68 61,182 Form 4
2025-10-22 Callans Patrick JExecutive Vice President Shares withheld for tax F −177 944.68 61,005 Form 4
2025-10-22 Callans Patrick JExecutive Vice President Shares withheld for tax F −111 944.68 60,895 Form 4
2025-10-22 Frates CatonExecutive Vice President Shares withheld for tax F −156 944.68 9,128 Form 4
2025-10-22 Frates CatonExecutive Vice President Shares withheld for tax F −248 944.68 8,880 Form 4
2025-10-22 Frates CatonExecutive Vice President Shares withheld for tax F −758 944.68 8,122 Form 4
2025-10-22 Frates CatonExecutive Vice President Shares withheld for tax F −901 944.68 7,221 Form 4
2025-10-22 Frates CatonExecutive Vice President Shares withheld for tax F −706 944.68 6,515 Form 4
2025-10-22 Klauer James CExecutive Vice President Shares withheld for tax F −240 944.68 47,014 Form 4
2025-10-22 Klauer James CExecutive Vice President Shares withheld for tax F −191 944.68 46,824 Form 4
2025-10-22 Klauer James CExecutive Vice President Shares withheld for tax F −199 944.68 46,625 Form 4
2025-10-22 Klauer James CExecutive Vice President Shares withheld for tax F −177 944.68 46,448 Form 4
2025-10-22 Klauer James CExecutive Vice President Shares withheld for tax F −111 944.68 46,337 Form 4
2025-10-22 Millerchip GaryExecutive Vice President Grant or award A +6,268 – 17,433 Form 4
2025-10-22 Millerchip GaryExecutive Vice President Shares withheld for tax F −313 944.68 17,120 Form 4
2025-10-22 Millerchip GaryExecutive Vice President Shares withheld for tax F −500 944.68 16,619 Form 4
2025-10-22 Polit JavierExecutive Vice President Grant or award A +4,219 – 13,965 Form 4
2025-10-22 Polit JavierExecutive Vice President Shares withheld for tax F −538 944.68 13,427 Form 4
2025-10-22 Polit JavierExecutive Vice President Shares withheld for tax F −294 944.68 13,134 Form 4
2025-10-22 Polit JavierExecutive Vice President Shares withheld for tax F −337 944.68 12,797 Form 4
2025-10-22 Sullivan John ChristopherExecutive VP Grant or award A +4,654 – 50,185 Form 4
2025-10-22 Sullivan John ChristopherExecutive VP Shares withheld for tax F −421 944.68 49,764 Form 4
2025-10-22 Sullivan John ChristopherExecutive VP Shares withheld for tax F −573 944.68 49,191 Form 4
2025-10-22 Sullivan John ChristopherExecutive VP Shares withheld for tax F −569 944.68 48,622 Form 4
2025-10-22 Sullivan John ChristopherExecutive VP Shares withheld for tax F −585 944.68 48,037 Form 4
2025-10-22 Sullivan John ChristopherExecutive VP Shares withheld for tax F −366 944.68 47,671 Form 4
2025-10-22 Vachris Roland MichaelDirector, President and CEO Grant or award A +13,834 – 54,911 Form 4
2025-10-22 Vachris Roland MichaelDirector, President and CEO Shares withheld for tax F −1,493 944.68 53,418 Form 4
2025-10-22 Vachris Roland MichaelDirector, President and CEO Shares withheld for tax F −1,160 944.68 52,258 Form 4
2025-10-22 Barbre Tiffany MarieOther Grant or award A +2,118 – 6,937 Form 4
2025-10-22 Barbre Tiffany MarieOther Shares withheld for tax F −114 944.68 6,824 Form 4
2025-10-22 Barbre Tiffany MarieOther Shares withheld for tax F −90 944.68 6,733 Form 4
2025-10-22 Barbre Tiffany MarieOther Shares withheld for tax F −119 944.68 6,615 Form 4
2025-10-22 Barbre Tiffany MarieOther Shares withheld for tax F −135 944.68 6,479 Form 4
2025-10-22 Barbre Tiffany MarieOther Shares withheld for tax F −85 944.68 6,395 Form 4
2025-09-23 Miller Russell DSr. Executive Vice President Gift G −2,918 – 2 Form 4
2025-09-23 Miller Russell DSr. Executive Vice President Gift G +2,918 – 13,120 Form 4
2025-09-10 Adamo ClaudineExecutive Vice President Grant or award A +4,219 – 11,206 Form 4
2025-09-10 Adamo ClaudineExecutive Vice President Shares withheld for tax F −950 956.29 10,256 Form 4
2025-09-10 Callans Patrick JExecutive Vice President Grant or award A +4,219 – 62,761 Form 4
2025-09-10 Callans Patrick JExecutive Vice President Shares withheld for tax F −950 956.29 61,812 Form 4
2025-09-10 Frates CatonExecutive Vice President Grant or award A +4,219 – 12,095 Form 4
2025-09-10 Frates CatonExecutive Vice President Shares withheld for tax F −1,271 956.29 10,824 Form 4
2025-09-10 Jones Teresa A.Executive Vice President Grant or award A +4,219 – 6,581 Form 4
2025-09-10 Jones Teresa A.Executive Vice President Shares withheld for tax F −1,503 956.29 5,078 Form 4
2025-09-10 Klauer James CExecutive Vice President Grant or award A +4,219 – 48,213 Form 4
2025-09-10 Klauer James CExecutive Vice President Shares withheld for tax F −958 956.29 47,254 Form 4
2025-09-10 Miller Russell DSr. Executive Vice President Grant or award A +4,654 – 4,655 Form 4
2025-09-10 Miller Russell DSr. Executive Vice President Shares withheld for tax F −1,735 956.29 2,920 Form 4
2025-09-10 Riel PierreExecutive Vice President Grant or award A +4,654 – 12,864 Form 4
2025-09-10 Riel PierreExecutive Vice President Shares withheld for tax F −1,608 956.29 11,256 Form 4
2025-09-10 Rubanenko YoramExecutive Vice President Grant or award A +4,219 – 9,993 Form 4
2025-09-10 Rubanenko YoramExecutive Vice President Shares withheld for tax F −1,746 956.29 8,247 Form 4
2025-09-02 Stanton John WDirector Gift G −211 – 211 Form 4
2025-09-02 Stanton John WDirector Gift G +211 – 211 Form 4
2025-07-14 Raikes Jeffrey SDirector Gift G −6,573 – 20,242 Form 4
2025-03-11 Millerchip GaryExecutive Vice President Shares withheld for tax F −1,147 930.49 12,265 Form 4
2024-12-19 Jelinek W CraigDirector Gift G −2,017 – 204,365 Form 4
2024-12-16 Denman Kenneth DDirector Gift G −520 – 5,703 Form 4
2024-12-16 Raikes Jeffrey SDirector Gift G −3,969 – 26,815 Form 4
2024-10-22 Decker Susan LDirector Grant or award A +303 – 12,078 Form 4
2024-10-22 Denman Kenneth DDirector Grant or award A +303 – 6,223 Form 4
2024-10-22 Foulkes HelenaDirector Grant or award A +303 – 801 Form 4
2024-10-22 James Hamilton eDirector Grant or award A +303 – 55,252 Form 4
2024-10-22 Jelinek W CraigDirector Grant or award A +303 – 206,382 Form 4
2024-10-22 Jewell Sarah Mr SallyDirector Grant or award A +303 – 3,327 Form 4
2024-10-22 Raikes Jeffrey SDirector Grant or award A +303 – 30,784 Form 4
2024-10-22 Stanton John WDirector Grant or award A +303 – 23,804 Form 4
2024-10-22 Wilderotter Mary AgnesDirector Grant or award A +303 – 12,671 Form 4
2024-10-22 Hines Daniel M.Other Grant or award A +2,149 – 13,141 Form 4
2024-10-22 Hines Daniel M.Other Shares withheld for tax F −92 893.49 13,049 Form 4
2024-10-22 Hines Daniel M.Other Shares withheld for tax F −76 893.49 12,973 Form 4
2024-10-22 Hines Daniel M.Other Shares withheld for tax F −60 893.49 12,913 Form 4
2024-10-22 Hines Daniel M.Other Shares withheld for tax F −73 893.49 12,839 Form 4
2024-10-22 Hines Daniel M.Other Shares withheld for tax F −90 893.49 12,750 Form 4
2024-10-22 Hines Daniel M.Other Shares withheld for tax F −563 893.49 12,186 Form 4
2024-10-22 Adamo ClaudineExecutive Vice President Shares withheld for tax F −149 893.49 8,481 Form 4
2024-10-22 Adamo ClaudineExecutive Vice President Shares withheld for tax F −122 893.49 8,359 Form 4
2024-10-22 Adamo ClaudineExecutive Vice President Shares withheld for tax F −97 893.49 8,261 Form 4
2024-10-22 Adamo ClaudineExecutive Vice President Shares withheld for tax F −198 893.49 8,063 Form 4
2024-10-22 Adamo ClaudineExecutive Vice President Shares withheld for tax F −177 893.49 7,886 Form 4
2024-10-22 Callans Patrick JExecutive Vice President Shares withheld for tax F −584 893.49 65,080 Form 4
2024-10-22 Callans Patrick JExecutive Vice President Shares withheld for tax F −721 893.49 64,359 Form 4
2024-10-22 Callans Patrick JExecutive Vice President Shares withheld for tax F −764 893.49 63,595 Form 4
2024-10-22 Callans Patrick JExecutive Vice President Shares withheld for tax F −992 893.49 62,603 Form 4
2024-10-22 Callans Patrick JExecutive Vice President Shares withheld for tax F −1,060 893.49 61,543 Form 4
2024-10-22 Frates CatonExecutive Vice President Shares withheld for tax F −191 893.49 9,491 Form 4
2024-10-22 Frates CatonExecutive Vice President Shares withheld for tax F −157 893.49 9,334 Form 4
2024-10-22 Frates CatonExecutive Vice President Shares withheld for tax F −125 893.49 9,209 Form 4
2024-10-22 Frates CatonExecutive Vice President Shares withheld for tax F −255 893.49 8,953 Form 4
2024-10-22 Frates CatonExecutive Vice President Shares withheld for tax F −228 893.49 8,726 Form 4
2024-10-22 Jones Teresa A.Executive Vice President Shares withheld for tax F −46 893.49 4,889 Form 4
2024-10-22 Jones Teresa A.Executive Vice President Shares withheld for tax F −76 893.49 4,814 Form 4
2024-10-22 Jones Teresa A.Executive Vice President Shares withheld for tax F −199 893.49 4,615 Form 4
2024-10-22 Jones Teresa A.Executive Vice President Shares withheld for tax F −404 893.49 4,211 Form 4
2024-10-22 Jones Teresa A.Executive Vice President Shares withheld for tax F −450 893.49 3,761 Form 4
2024-10-22 Millerchip GaryExecutive Vice President Grant or award A +3,922 – 13,725 Form 4
2024-10-22 Millerchip GaryExecutive Vice President Shares withheld for tax F −313 893.49 13,412 Form 4
2024-10-22 Polit JavierExecutive Vice President Grant or award A +6,737 – 10,420 Form 4
2024-10-22 Polit JavierExecutive Vice President Shares withheld for tax F −380 893.49 10,040 Form 4
2024-10-22 Polit JavierExecutive Vice President Shares withheld for tax F −294 893.49 9,746 Form 4
2024-10-22 Sullivan John ChristopherExecutive VP Grant or award A +7,433 – 48,052 Form 4
2024-10-22 Sullivan John ChristopherExecutive VP Shares withheld for tax F −514 893.49 47,537 Form 4
2024-10-22 Sullivan John ChristopherExecutive VP Shares withheld for tax F −421 893.49 47,116 Form 4
2024-10-22 Sullivan John ChristopherExecutive VP Shares withheld for tax F −573 893.49 46,543 Form 4
2024-10-22 Sullivan John ChristopherExecutive VP Shares withheld for tax F −427 893.49 46,116 Form 4
2024-10-22 Sullivan John ChristopherExecutive VP Shares withheld for tax F −585 893.49 45,531 Form 4
2024-10-22 Vachris Roland MichaelDirector, President and CEO Grant or award A +19,148 – 46,408 Form 4
2024-10-22 Vachris Roland MichaelDirector, President and CEO Shares withheld for tax F −1,731 893.49 44,677 Form 4
2024-10-22 Klauer James CExecutive Vice President Shares withheld for tax F −291 893.49 48,800 Form 4
2024-10-22 Klauer James CExecutive Vice President Shares withheld for tax F −240 893.49 48,560 Form 4
2024-10-22 Klauer James CExecutive Vice President Shares withheld for tax F −191 893.49 48,369 Form 4
2024-10-22 Klauer James CExecutive Vice President Shares withheld for tax F −198 893.49 48,170 Form 4
2024-10-22 Klauer James CExecutive Vice President Shares withheld for tax F −177 893.49 47,994 Form 4

How to read it

Buy, sale
Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
Plan
A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
Holds after
The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
Value
Shares times the price the form reports, which is often an average over several fills on the day.

Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.

Costco Wholesale's scores and multiples ›