Costco Wholesale Corporation
$1004.99+1.67 (+0.17%)
Prev Close
$1003.32
Open
$1005.90
High
$1012.83
Low
$1002.00
Volume
896.5K
Market Cap
$445.34B
P/E
53.77
Div Yield
0.01%
Over the past 12 months, insider activity at Costco Wholesale Corporation (COST) has been exclusively selling, with 0 insider purchases totaling $0.00 and 36 insider sales totaling $56.75M. The most recent insider transaction was by Adamo Claudine (officer: Executive Vice President), who sold $732.2K worth of shares on Mar 11, 2026. Costco Wholesale Corporation operates in the Consumer Defensive sector, within the Discount Stores industry, with a market cap of $445.34B.
Buys (12M)
0
$0.00
Sells (12M)
36
$56.75M
Net Activity
Net Seller
$56.75M
Active Insiders
15
last 12 mo
COST Price Chart
COST Insider Trading Activity
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Mar 11, 2026↗ | Adamo Claudine | officer: Executive Vice President | Sell | 730 | $1003.02 | $732.2K | 6,121.19 |
| Jan 23, 2026↗ | Jones Teresa A. | officer: Executive Vice President | Sell | 850 | $986.26 | $838.3K | 4,227.8 |
| Jan 21, 2026↗ | Jones Teresa A. | Executive Vice President | Sell | 850 | $986.26 | $838.3K | 0 |
| Jan 20, 2026↗ | DECKER SUSAN L | Director | Sell | 916 | $955.00 | $874.8K | 8,531.94 |
| Jan 15, 2026↗ | Klauer James C | officer: Executive Vice President | Sell | 1,500 | $939.00 | $1.41M | 44,837 |
| Jan 14, 2026↗ | Klauer James C | Executive Vice President | Sell | 1,500 | $939.00 | $1.41M | 0 |
| Jan 12, 2026↗ | Miller Russell D | Sr. Executive Vice President | Sell | 3,000 | $916.32 | $2.75M | 8,240 |
| Dec 29, 2025↗ | POLIT JAVIER | Executive Vice President | Sell | 2,607 | $866.38 | $2.26M | 0 |
| Nov 7, 2025↗ | Wilcox William Richard | Executive Vice President | Sell | 2,400 | $930.13 | $2.23M | 0 |
| Oct 24, 2025↗ | Callans Patrick J | Executive Vice President | Sell | 918 | $943.60 | $866.2K | 0 |
| Oct 22, 2025↗ | Adamo Claudine | Executive Vice President | Sell | 3,406 | $937.17 | $3.19M | 0 |
| Oct 22, 2025↗ | Barbre Tiffany Marie | Insider | Sell | 1,782 | $937.53 | $1.67M | 0 |
| Oct 22, 2025↗ | Frates Caton | Executive Vice President | Sell | 2,769 | $944.58 | $2.62M | 0 |
| Oct 22, 2025↗ | Klauer James C | Executive Vice President | Sell | 918 | $944.01 | $866.6K | 0 |
| Oct 22, 2025↗ | MILLERCHIP GARY | Executive Vice President | Sell | 813 | $945.11 | $768.4K | 0 |
| Oct 22, 2025↗ | POLIT JAVIER | Executive Vice President | Sell | 1,169 | $944.10 | $1.10M | 0 |
| Oct 22, 2025↗ | Sullivan John Christopher | Executive VP | Sell | 2,514 | $944.51 | $2.37M | 0 |
| Oct 22, 2025↗ | Vachris Roland Michael | President and CEO | Sell | 2,653 | $944.61 | $2.51M | 0 |
| Sep 29, 2025↗ | Frates Caton | Executive Vice President | Sell | 1,540 | $910.02 | $1.40M | 0 |
| Sep 29, 2025↗ | Miller Russell D | Sr. Executive Vice President | Sell | 3,381 | $915.00 | $3.09M | 0 |
| Sep 10, 2025↗ | Adamo Claudine | Executive Vice President | Sell | 950 | $955.95 | $908.2K | 0 |
| Sep 10, 2025↗ | Callans Patrick J | Executive Vice President | Sell | 950 | $955.95 | $908.2K | 0 |
| Sep 10, 2025↗ | Frates Caton | Executive Vice President | Sell | 1,271 | $956.35 | $1.22M | 0 |
| Sep 10, 2025↗ | Jones Teresa A. | Executive Vice President | Sell | 1,503 | $956.49 | $1.44M | 0 |
| Sep 10, 2025↗ | Klauer James C | Executive Vice President | Sell | 958 | $956.58 | $916.4K | 0 |
| Sep 10, 2025↗ | Miller Russell D | Sr. Executive Vice President | Sell | 1,735 | $956.33 | $1.66M | 0 |
| Sep 10, 2025↗ | Riel Pierre | Executive Vice President | Sell | 1,608 | $956.50 | $1.54M | 0 |
| Sep 10, 2025↗ | Rubanenko Yoram | Executive Vice President | Sell | 1,746 | $956.24 | $1.67M | 0 |
| Aug 20, 2025↗ | Jones Teresa A. | Executive Vice President | Sell | 600 | $992.05 | $595.2K | 0 |
| Jul 14, 2025↗ | Rubanenko Yoram | Executive Vice President | Sell | 4,000 | $974.96 | $3.90M | 0 |
| Jun 18, 2025↗ | DECKER SUSAN L | Director | Sell | 547 | $980.00 | $536.1K | 0 |
| Jun 9, 2025↗ | Callans Patrick J | Executive Vice President | Sell | 3,000 | $1002.77 | $3.01M | 0 |
| Jun 6, 2025↗ | Riel Pierre | Executive Vice President | Sell | 2,000 | $1014.15 | $2.03M | 0 |
| Mar 27, 2025↗ | MILLERCHIP GARY | Executive Vice President | Sell | 1,100 | $940.01 | $1.03M | 0 |
| Mar 24, 2025↗ | Adamo Claudine | Executive Vice President | Sell | 900 | $922.56 | $830.3K | 0 |
| Mar 18, 2025↗ | Frates Caton | Executive Vice President | Sell | 850 | $900.25 | $765.2K | 0 |
| Mar 11, 2025↗ | MILLERCHIP GARY | Executive Vice President | Sell | 1,147 | $930.70 | $1.07M | 0 |
| Mar 11, 2025↗ | Vachris Roland Michael | President and CEO | Sell | 3,600 | $931.00 | $3.35M | 0 |
| Oct 24, 2024↗ | GALANTI RICHARD A | Executive Vice President | Sell | 1,416 | $894.97 | $1.27M | 0 |
| Oct 22, 2024↗ | Adamo Claudine | Executive Vice President | Sell | 743 | $893.59 | $663.9K | 0 |
| Oct 22, 2024↗ | Callans Patrick J | Executive Vice President | Sell | 4,121 | $893.45 | $3.68M | 0 |
| Oct 22, 2024↗ | Frates Caton | Executive Vice President | Sell | 956 | $893.98 | $854.6K | 0 |
| Oct 22, 2024↗ | Hines Daniel M. | Insider | Sell | 954 | $893.89 | $852.8K | 0 |
| Oct 22, 2024↗ | Jones Teresa A. | Executive Vice President | Sell | 1,975 | $894.31 | $1.77M | 0 |
| Oct 22, 2024↗ | Klauer James C | Executive Vice President | Sell | 1,097 | $893.65 | $980.3K | 0 |
| Oct 22, 2024↗ | MILLERCHIP GARY | Executive Vice President | Sell | 313 | $893.64 | $279.7K | 0 |
| Oct 22, 2024↗ | POLIT JAVIER | Executive Vice President | Sell | 674 | $893.58 | $602.3K | 0 |
| Oct 22, 2024↗ | Sullivan John Christopher | Executive VP | Sell | 2,520 | $893.79 | $2.25M | 0 |
| Oct 22, 2024↗ | Vachris Roland Michael | President and CEO | Sell | 1,731 | $893.42 | $1.55M | 0 |
| Oct 15, 2024↗ | Riel Pierre | Executive Vice President | Sell | 2,000 | $896.72 | $1.79M | 0 |
| Oct 11, 2024↗ | Miller Russell D | Sr. Executive Vice President | Sell | 4,400 | $891.15 | $3.92M | 0 |
| Sep 30, 2024↗ | Adamo Claudine | Executive Vice President | Sell | 3,200 | $888.99 | $2.84M | 0 |
| Sep 30, 2024↗ | Callans Patrick J | Executive Vice President | Sell | 2,500 | $893.94 | $2.23M | 0 |
| Sep 30, 2024↗ | Frates Caton | Executive Vice President | Sell | 1,700 | $883.35 | $1.50M | 0 |
| Sep 16, 2024↗ | Adamo Claudine | Executive Vice President | Sell | 1,602 | $907.95 | $1.45M | 0 |
| Sep 16, 2024↗ | Callans Patrick J | Executive Vice President | Sell | 718 | $908.46 | $652.3K | 0 |
| Sep 16, 2024↗ | Frates Caton | Executive Vice President | Sell | 2,111 | $907.88 | $1.92M | 0 |
| Sep 16, 2024↗ | GALANTI RICHARD A | Executive Vice President | Sell | 3,566 | $907.92 | $3.24M | 0 |
| Sep 16, 2024↗ | Klauer James C | Executive Vice President | Sell | 1,610 | $908.11 | $1.46M | 0 |
| Sep 16, 2024↗ | Miller Russell D | Senior EVP | Sell | 2,832 | $907.89 | $2.57M | 0 |
| Sep 16, 2024↗ | Riel Pierre | Executive Vice President | Sell | 2,645 | $908.00 | $2.40M | 0 |
| Sep 16, 2024↗ | Rubanenko Yoram | Executive Vice President | Sell | 2,873 | $907.94 | $2.61M | 0 |
| Aug 15, 2024↗ | DECKER SUSAN L | Director | Sell | 620 | $876.50 | $543.4K | 0 |
| Aug 13, 2024↗ | GALANTI RICHARD A | Executive Vice President | Sell | 1,000 | $868.96 | $869.0K | 0 |
| Jul 25, 2024↗ | Jones Teresa A. | Executive Vice President | Sell | 4 | $832.55 | $3.3K | 0 |
| Jul 15, 2024↗ | DENMAN KENNETH D | Director | Sell | 350 | $851.53 | $298.0K | 0 |
| Jul 12, 2024↗ | Hines Daniel M. | Insider | Sell | 3,000 | $846.37 | $2.54M | 0 |
| Apr 17, 2024↗ | Miller Russell D | Senior EVP | Sell | 785 | $722.86 | $567.4K | 0 |
| Apr 5, 2024↗ | JELINEK W CRAIG | Director | Sell | 26,724 | $713.73 | $19.07M | 0 |
| Mar 11, 2024↗ | Adamo Claudine | Executive Vice President | Sell | 1,500 | $714.83 | $1.07M | 0 |
| Mar 11, 2024↗ | Callans Patrick J | Executive VP | Sell | 2,500 | $714.86 | $1.79M | 0 |
| Feb 9, 2024↗ | DECKER SUSAN L | Director | Sell | 1,442 | $723.48 | $1.04M | 0 |
| Jan 23, 2024↗ | JELINEK W CRAIG | Director | Sell | 8,000 | $685.93 | $5.49M | 0 |
| Jan 18, 2024↗ | Rubanenko Yoram | Executive VP | Sell | 2,500 | $680.32 | $1.70M | 0 |
| Jan 16, 2024↗ | Frates Caton | Executive Vice President | Sell | 740 | $683.50 | $505.8K | 0 |
| Jan 9, 2024↗ | Hines Daniel M. | Insider | Sell | 1,400 | $662.30 | $927.2K | 0 |
| Dec 28, 2023↗ | Hines Daniel M. | Insider | Sell | 1,400 | $662.81 | $927.9K | 0 |
| Dec 19, 2023↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 1,112 | $680.08 | $756.2K | 0 |
| Nov 8, 2023↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 2,000 | $566.09 | $1.13M | 0 |
| Nov 7, 2023↗ | Riel Pierre | EVP | Sell | 3,000 | $571.11 | $1.71M | 0 |
| Nov 3, 2023↗ | Miller Russell D | Senior EVP | Sell | 4,500 | $557.75 | $2.51M | 0 |
| Oct 22, 2023↗ | Adamo Claudine | Executive Vice President | Sell | 3,306 | $549.88 | $1.82M | 0 |
| Oct 22, 2023↗ | Callans Patrick J | Executive VP | Sell | 2,532 | $552.88 | $1.40M | 0 |
| Oct 22, 2023↗ | Frates Caton | Executive Vice President | Sell | 933 | $552.99 | $515.9K | 0 |
| Oct 22, 2023↗ | Hines Daniel M. | Insider | Sell | 1,258 | $553.04 | $695.7K | 0 |
| Oct 22, 2023↗ | JELINEK W CRAIG | CEO | Sell | 5,434 | $552.81 | $3.00M | 0 |
| Oct 22, 2023↗ | Klauer James C | Executive Vice President | Sell | 1,265 | $553.15 | $699.7K | 0 |
| Oct 22, 2023↗ | Sullivan John Christopher | Executive VP | Sell | 2,347 | $552.94 | $1.30M | 0 |
| Oct 11, 2023↗ | Klauer James C | Executive Vice President | Sell | 1,500 | $562.01 | $843.0K | 0 |
| Oct 10, 2023↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 2,000 | $565.57 | $1.13M | 0 |
| Oct 9, 2023↗ | Callans Patrick J | Executive VP | Sell | 2,500 | $553.76 | $1.38M | 0 |
| Oct 6, 2023↗ | Frates Caton | Executive Vice President | Sell | 1,200 | $562.64 | $675.2K | 0 |
| Sep 19, 2023↗ | Riel Pierre | EVP | Sell | 2,725 | $556.32 | $1.52M | 0 |
| Sep 15, 2023↗ | Adamo Claudine | Executive Vice President | Sell | 1,679 | $556.49 | $934.3K | 0 |
| Sep 15, 2023↗ | Callans Patrick J | Executive VP | Sell | 705 | $556.43 | $392.3K | 0 |
| Sep 15, 2023↗ | Frates Caton | Executive Vice President | Sell | 2,186 | $556.38 | $1.22M | 0 |
| Sep 15, 2023↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 3,845 | $556.39 | $2.14M | 0 |
| Sep 15, 2023↗ | Klauer James C | Executive Vice President | Sell | 1,679 | $556.49 | $934.3K | 0 |
| Sep 15, 2023↗ | Miller Russell D | Senior EVP | Sell | 3,003 | $556.37 | $1.67M | 0 |
| Sep 15, 2023↗ | Rubanenko Yoram | Executive VP | Sell | 3,081 | $556.34 | $1.71M | 0 |
| Sep 15, 2023↗ | Vachris Roland Michael | President and COO | Sell | 5,491 | $556.34 | $3.05M | 0 |
| Jul 20, 2023↗ | Klauer James C | Executive Vice President | Sell | 4,000 | $981.07 | $3.92M | 0 |
| Jun 28, 2023↗ | DECKER SUSAN L | Director | Sell | 1,565 | $533.00 | $834.1K | 0 |
| Jun 13, 2023↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 1,500 | $522.03 | $783.0K | 0 |
| Jun 7, 2023↗ | DECKER SUSAN L | Director | Sell | 3,971 | $514.14 | $2.04M | 0 |
| Apr 11, 2023↗ | Frates Caton | Executive Vice President | Sell | 600 | $497.35 | $298.4K | 0 |
| Mar 14, 2023↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 2,068 | $483.32 | $999.5K | 0 |
| Mar 7, 2023↗ | Miller Russell D | Senior EVP | Sell | 1,500 | $488.95 | $733.4K | 0 |
| Mar 6, 2023↗ | Vachris Roland Michael | President and COO | Sell | 4,100 | $476.29 | $1.95M | 0 |
| Jan 27, 2023↗ | Klauer James C | Executive Vice President | Sell | 2,500 | $503.69 | $1.26M | 0 |
| Dec 12, 2022↗ | DECKER SUSAN L | Director | Sell | 952 | $483.00 | $459.8K | 0 |
| Nov 4, 2022↗ | Miller Russell D | Executive Vice President | Sell | 1,000 | $483.58 | $483.6K | 0 |
| Oct 26, 2022↗ | Adamo Claudine | Executive Vice President | Sell | 2,000 | $495.97 | $991.9K | 0 |
| Oct 25, 2022↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 1,500 | $477.65 | $716.5K | 0 |
| Oct 22, 2022↗ | Adamo Claudine | Executive Vice President | Sell | 2,254 | $478.18 | $1.08M | 0 |
| Oct 22, 2022↗ | Callans Patrick J | Executive VP | Sell | 2,653 | $478.18 | $1.27M | 0 |
| Oct 22, 2022↗ | Frates Caton | Executive Vice President | Sell | 706 | $478.18 | $337.6K | 0 |
| Oct 22, 2022↗ | Hines Daniel M. | Insider | Sell | 1,483 | $478.18 | $709.1K | 0 |
| Oct 22, 2022↗ | JELINEK W CRAIG | CEO | Sell | 2,711 | $478.18 | $1.30M | 0 |
| Oct 22, 2022↗ | Klauer James C | Executive Vice President | Sell | 1,328 | $478.18 | $635.0K | 0 |
| Oct 22, 2022↗ | Murphy James P. | Executive VP | Sell | 4,246 | $478.18 | $2.03M | 0 |
| Oct 22, 2022↗ | Rubananko Yoram | Executive VP | Sell | 2,530 | $478.18 | $1.21M | 0 |
| Oct 22, 2022↗ | Sullivan John Christopher | Executive VP | Sell | 2,487 | $478.18 | $1.19M | 0 |
| Oct 7, 2022↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 2,000 | $471.12 | $942.2K | 0 |
| Sep 12, 2022↗ | Callans Patrick J | Executive VP | Sell | 662 | $539.52 | $357.2K | 0 |
| Sep 12, 2022↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 3,155 | $539.52 | $1.70M | 0 |
| Sep 12, 2022↗ | Klauer James C | Executive Vice President | Sell | 1,600 | $539.52 | $863.2K | 0 |
| Sep 12, 2022↗ | Miller Russell D | Executive Vice President | Sell | 3,335 | $539.52 | $1.80M | 0 |
| Sep 12, 2022↗ | Rose Timothy L. | Executive VP | Sell | 2,538 | $539.52 | $1.37M | 0 |
| Sep 12, 2022↗ | Vachris Roland Michael | President | Sell | 4,461 | $539.52 | $2.41M | 0 |
| Aug 3, 2022↗ | Murphy James P. | Executive VP | Sell | 1,793 | $539.52 | $967.4K | 0 |
| Jul 20, 2022↗ | Murphy James P. | Executive VP | Sell | 1,500 | $525.20 | $787.8K | 0 |
| Jul 15, 2022↗ | DENMAN KENNETH D | Director | Sell | 300 | $521.68 | $156.5K | 0 |
| Jul 14, 2022↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 1,000 | $505.60 | $505.6K | 0 |
| Jun 22, 2022↗ | Murphy James P. | Executive VP | Sell | 2,500 | $464.00 | $1.16M | 0 |
| Jun 7, 2022↗ | Wilderotter Mary Agnes | Director | Buy | 850 | $470.74 | $400.1K | 0 |
| Apr 8, 2022↗ | Adamo Claudine | Executive Vice President | Sell | 500 | $602.03 | $301.0K | 0 |
| Apr 8, 2022↗ | Hines Daniel M. | Insider | Sell | 4,498 | $603.00 | $2.71M | 0 |
| Mar 29, 2022↗ | Rose Timothy L. | Executive VP | Sell | 4,000 | $566.29 | $2.27M | 0 |
| Mar 23, 2022↗ | DENMAN KENNETH D | Director | Sell | 250 | $554.68 | $138.7K | 0 |
| Jan 27, 2022↗ | Vachris Roland Michael | Executive VP | Sell | 3,318 | $492.44 | $1.63M | 0 |
| Dec 21, 2021↗ | Wilderotter Mary Agnes | Director | Buy | 925 | $540.13 | $499.6K | 0 |
| Dec 15, 2021↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 2,218 | $554.08 | $1.23M | 0 |
| Dec 13, 2021↗ | Callans Patrick J | Executive VP | Sell | 2,500 | $549.03 | $1.37M | 0 |
| Dec 13, 2021↗ | Murphy James P. | Executive VP | Sell | 5,000 | $559.32 | $2.80M | 0 |
| Dec 13, 2021↗ | Rubananko Yoram | Executive VP | Sell | 4,000 | $550.72 | $2.20M | 0 |
| Oct 22, 2021↗ | Callans Patrick J | Executive VP | Sell | 2,830 | $481.99 | $1.36M | 0 |
| Oct 22, 2021↗ | Hines Daniel M. | Insider | Sell | 4,151 | $481.99 | $2.00M | 0 |
| Oct 22, 2021↗ | JELINEK W CRAIG | President and CEO | Sell | 1,607 | $481.99 | $774.6K | 0 |
| Oct 22, 2021↗ | Murphy James P. | Executive VP | Sell | 1,979 | $481.99 | $953.9K | 0 |
| Oct 22, 2021↗ | Rubananko Yoram | Executive VP | Sell | 2,966 | $481.99 | $1.43M | 0 |
| Sep 28, 2021↗ | Klauer James C | Executive Vice President | Sell | 5,612 | $481.99 | $2.70M | 0 |
| Sep 21, 2021↗ | Miller Russell D | Executive Vice President | Sell | 4,000 | $556.02 | $2.22M | 0 |
| Sep 14, 2021↗ | Callans Patrick J | Executive VP | Sell | 855 | $458.41 | $391.9K | 0 |
| Sep 14, 2021↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 3,579 | $458.41 | $1.64M | 0 |
| Sep 14, 2021↗ | Klauer James C | Executive Vice President | Sell | 855 | $458.41 | $391.9K | 0 |
| Sep 14, 2021↗ | Miller Russell D | Executive Vice President | Sell | 4,134 | $458.41 | $1.90M | 0 |
| Sep 14, 2021↗ | MOULTON PAUL G | Executive VP | Sell | 3,214 | $458.41 | $1.47M | 0 |
| Sep 14, 2021↗ | Murphy James P. | Executive VP | Sell | 2,278 | $458.41 | $1.04M | 0 |
| Sep 14, 2021↗ | PORTERA JOSEPH P | Executive VP | Sell | 4,150 | $458.41 | $1.90M | 0 |
| Sep 14, 2021↗ | Rose Timothy L. | Executive VP | Sell | 3,214 | $458.41 | $1.47M | 0 |
| Sep 14, 2021↗ | Vachris Roland Michael | Executive VP | Sell | 3,579 | $458.41 | $1.64M | 0 |
| Jul 12, 2021↗ | Vachris Roland Michael | Executive VP | Sell | 4,000 | $409.40 | $1.64M | 0 |
| Jun 28, 2021↗ | Rose Timothy L. | Executive VP | Sell | 4,000 | $396.14 | $1.58M | 0 |
| Jun 14, 2021↗ | Klauer James C | Executive Vice President | Sell | 5,000 | $380.53 | $1.90M | 0 |
| Jun 7, 2021↗ | Callans Patrick J | Executive VP | Sell | 2,500 | $384.31 | $960.8K | 0 |
| Mar 22, 2021↗ | Vachris Roland Michael | Executive VP | Sell | 4,300 | $334.30 | $1.44M | 0 |
| Oct 9, 2020↗ | PORTERA JOSEPH P | Executive VP | Sell | 3,287 | $445.50 | $1.46M | 0 |
| Apr 29, 2011↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 2,230 | $372.06 | $829.7K | 0 |
COST Insider Buying Activity
The following table shows recent insider purchases of Costco Wholesale Corporation (COST) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Jun 7, 2022↗ | Wilderotter Mary Agnes | Director | Buy | 850 | $470.74 | $400.1K | 0 |
| Dec 21, 2021↗ | Wilderotter Mary Agnes | Director | Buy | 925 | $540.13 | $499.6K | 0 |
COST Insider Selling Activity
The following table shows recent insider sales of Costco Wholesale Corporation (COST) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Mar 11, 2026↗ | Adamo Claudine | officer: Executive Vice President | Sell | 730 | $1003.02 | $732.2K | 6,121.19 |
| Jan 23, 2026↗ | Jones Teresa A. | officer: Executive Vice President | Sell | 850 | $986.26 | $838.3K | 4,227.8 |
| Jan 21, 2026↗ | Jones Teresa A. | Executive Vice President | Sell | 850 | $986.26 | $838.3K | 0 |
| Jan 20, 2026↗ | DECKER SUSAN L | Director | Sell | 916 | $955.00 | $874.8K | 8,531.94 |
| Jan 15, 2026↗ | Klauer James C | officer: Executive Vice President | Sell | 1,500 | $939.00 | $1.41M | 44,837 |
| Jan 14, 2026↗ | Klauer James C | Executive Vice President | Sell | 1,500 | $939.00 | $1.41M | 0 |
| Jan 12, 2026↗ | Miller Russell D | Sr. Executive Vice President | Sell | 3,000 | $916.32 | $2.75M | 8,240 |
| Dec 29, 2025↗ | POLIT JAVIER | Executive Vice President | Sell | 2,607 | $866.38 | $2.26M | 0 |
| Nov 7, 2025↗ | Wilcox William Richard | Executive Vice President | Sell | 2,400 | $930.13 | $2.23M | 0 |
| Oct 24, 2025↗ | Callans Patrick J | Executive Vice President | Sell | 918 | $943.60 | $866.2K | 0 |
| Oct 22, 2025↗ | Adamo Claudine | Executive Vice President | Sell | 3,406 | $937.17 | $3.19M | 0 |
| Oct 22, 2025↗ | Barbre Tiffany Marie | Insider | Sell | 1,782 | $937.53 | $1.67M | 0 |
| Oct 22, 2025↗ | Frates Caton | Executive Vice President | Sell | 2,769 | $944.58 | $2.62M | 0 |
| Oct 22, 2025↗ | Klauer James C | Executive Vice President | Sell | 918 | $944.01 | $866.6K | 0 |
| Oct 22, 2025↗ | MILLERCHIP GARY | Executive Vice President | Sell | 813 | $945.11 | $768.4K | 0 |
| Oct 22, 2025↗ | POLIT JAVIER | Executive Vice President | Sell | 1,169 | $944.10 | $1.10M | 0 |
| Oct 22, 2025↗ | Sullivan John Christopher | Executive VP | Sell | 2,514 | $944.51 | $2.37M | 0 |
| Oct 22, 2025↗ | Vachris Roland Michael | President and CEO | Sell | 2,653 | $944.61 | $2.51M | 0 |
| Sep 29, 2025↗ | Frates Caton | Executive Vice President | Sell | 1,540 | $910.02 | $1.40M | 0 |
| Sep 29, 2025↗ | Miller Russell D | Sr. Executive Vice President | Sell | 3,381 | $915.00 | $3.09M | 0 |
| Sep 10, 2025↗ | Adamo Claudine | Executive Vice President | Sell | 950 | $955.95 | $908.2K | 0 |
| Sep 10, 2025↗ | Callans Patrick J | Executive Vice President | Sell | 950 | $955.95 | $908.2K | 0 |
| Sep 10, 2025↗ | Frates Caton | Executive Vice President | Sell | 1,271 | $956.35 | $1.22M | 0 |
| Sep 10, 2025↗ | Jones Teresa A. | Executive Vice President | Sell | 1,503 | $956.49 | $1.44M | 0 |
| Sep 10, 2025↗ | Klauer James C | Executive Vice President | Sell | 958 | $956.58 | $916.4K | 0 |
| Sep 10, 2025↗ | Miller Russell D | Sr. Executive Vice President | Sell | 1,735 | $956.33 | $1.66M | 0 |
| Sep 10, 2025↗ | Riel Pierre | Executive Vice President | Sell | 1,608 | $956.50 | $1.54M | 0 |
| Sep 10, 2025↗ | Rubanenko Yoram | Executive Vice President | Sell | 1,746 | $956.24 | $1.67M | 0 |
| Aug 20, 2025↗ | Jones Teresa A. | Executive Vice President | Sell | 600 | $992.05 | $595.2K | 0 |
| Jul 14, 2025↗ | Rubanenko Yoram | Executive Vice President | Sell | 4,000 | $974.96 | $3.90M | 0 |
| Jun 18, 2025↗ | DECKER SUSAN L | Director | Sell | 547 | $980.00 | $536.1K | 0 |
| Jun 9, 2025↗ | Callans Patrick J | Executive Vice President | Sell | 3,000 | $1002.77 | $3.01M | 0 |
| Jun 6, 2025↗ | Riel Pierre | Executive Vice President | Sell | 2,000 | $1014.15 | $2.03M | 0 |
| Mar 27, 2025↗ | MILLERCHIP GARY | Executive Vice President | Sell | 1,100 | $940.01 | $1.03M | 0 |
| Mar 24, 2025↗ | Adamo Claudine | Executive Vice President | Sell | 900 | $922.56 | $830.3K | 0 |
| Mar 18, 2025↗ | Frates Caton | Executive Vice President | Sell | 850 | $900.25 | $765.2K | 0 |
| Mar 11, 2025↗ | MILLERCHIP GARY | Executive Vice President | Sell | 1,147 | $930.70 | $1.07M | 0 |
| Mar 11, 2025↗ | Vachris Roland Michael | President and CEO | Sell | 3,600 | $931.00 | $3.35M | 0 |
| Oct 24, 2024↗ | GALANTI RICHARD A | Executive Vice President | Sell | 1,416 | $894.97 | $1.27M | 0 |
| Oct 22, 2024↗ | Adamo Claudine | Executive Vice President | Sell | 743 | $893.59 | $663.9K | 0 |
| Oct 22, 2024↗ | Callans Patrick J | Executive Vice President | Sell | 4,121 | $893.45 | $3.68M | 0 |
| Oct 22, 2024↗ | Frates Caton | Executive Vice President | Sell | 956 | $893.98 | $854.6K | 0 |
| Oct 22, 2024↗ | Hines Daniel M. | Insider | Sell | 954 | $893.89 | $852.8K | 0 |
| Oct 22, 2024↗ | Jones Teresa A. | Executive Vice President | Sell | 1,975 | $894.31 | $1.77M | 0 |
| Oct 22, 2024↗ | Klauer James C | Executive Vice President | Sell | 1,097 | $893.65 | $980.3K | 0 |
| Oct 22, 2024↗ | MILLERCHIP GARY | Executive Vice President | Sell | 313 | $893.64 | $279.7K | 0 |
| Oct 22, 2024↗ | POLIT JAVIER | Executive Vice President | Sell | 674 | $893.58 | $602.3K | 0 |
| Oct 22, 2024↗ | Sullivan John Christopher | Executive VP | Sell | 2,520 | $893.79 | $2.25M | 0 |
| Oct 22, 2024↗ | Vachris Roland Michael | President and CEO | Sell | 1,731 | $893.42 | $1.55M | 0 |
| Oct 15, 2024↗ | Riel Pierre | Executive Vice President | Sell | 2,000 | $896.72 | $1.79M | 0 |
| Oct 11, 2024↗ | Miller Russell D | Sr. Executive Vice President | Sell | 4,400 | $891.15 | $3.92M | 0 |
| Sep 30, 2024↗ | Adamo Claudine | Executive Vice President | Sell | 3,200 | $888.99 | $2.84M | 0 |
| Sep 30, 2024↗ | Callans Patrick J | Executive Vice President | Sell | 2,500 | $893.94 | $2.23M | 0 |
| Sep 30, 2024↗ | Frates Caton | Executive Vice President | Sell | 1,700 | $883.35 | $1.50M | 0 |
| Sep 16, 2024↗ | Adamo Claudine | Executive Vice President | Sell | 1,602 | $907.95 | $1.45M | 0 |
| Sep 16, 2024↗ | Callans Patrick J | Executive Vice President | Sell | 718 | $908.46 | $652.3K | 0 |
| Sep 16, 2024↗ | Frates Caton | Executive Vice President | Sell | 2,111 | $907.88 | $1.92M | 0 |
| Sep 16, 2024↗ | GALANTI RICHARD A | Executive Vice President | Sell | 3,566 | $907.92 | $3.24M | 0 |
| Sep 16, 2024↗ | Klauer James C | Executive Vice President | Sell | 1,610 | $908.11 | $1.46M | 0 |
| Sep 16, 2024↗ | Miller Russell D | Senior EVP | Sell | 2,832 | $907.89 | $2.57M | 0 |
| Sep 16, 2024↗ | Riel Pierre | Executive Vice President | Sell | 2,645 | $908.00 | $2.40M | 0 |
| Sep 16, 2024↗ | Rubanenko Yoram | Executive Vice President | Sell | 2,873 | $907.94 | $2.61M | 0 |
| Aug 15, 2024↗ | DECKER SUSAN L | Director | Sell | 620 | $876.50 | $543.4K | 0 |
| Aug 13, 2024↗ | GALANTI RICHARD A | Executive Vice President | Sell | 1,000 | $868.96 | $869.0K | 0 |
| Jul 25, 2024↗ | Jones Teresa A. | Executive Vice President | Sell | 4 | $832.55 | $3.3K | 0 |
| Jul 15, 2024↗ | DENMAN KENNETH D | Director | Sell | 350 | $851.53 | $298.0K | 0 |
| Jul 12, 2024↗ | Hines Daniel M. | Insider | Sell | 3,000 | $846.37 | $2.54M | 0 |
| Apr 17, 2024↗ | Miller Russell D | Senior EVP | Sell | 785 | $722.86 | $567.4K | 0 |
| Apr 5, 2024↗ | JELINEK W CRAIG | Director | Sell | 26,724 | $713.73 | $19.07M | 0 |
| Mar 11, 2024↗ | Adamo Claudine | Executive Vice President | Sell | 1,500 | $714.83 | $1.07M | 0 |
| Mar 11, 2024↗ | Callans Patrick J | Executive VP | Sell | 2,500 | $714.86 | $1.79M | 0 |
| Feb 9, 2024↗ | DECKER SUSAN L | Director | Sell | 1,442 | $723.48 | $1.04M | 0 |
| Jan 23, 2024↗ | JELINEK W CRAIG | Director | Sell | 8,000 | $685.93 | $5.49M | 0 |
| Jan 18, 2024↗ | Rubanenko Yoram | Executive VP | Sell | 2,500 | $680.32 | $1.70M | 0 |
| Jan 16, 2024↗ | Frates Caton | Executive Vice President | Sell | 740 | $683.50 | $505.8K | 0 |
| Jan 9, 2024↗ | Hines Daniel M. | Insider | Sell | 1,400 | $662.30 | $927.2K | 0 |
| Dec 28, 2023↗ | Hines Daniel M. | Insider | Sell | 1,400 | $662.81 | $927.9K | 0 |
| Dec 19, 2023↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 1,112 | $680.08 | $756.2K | 0 |
| Nov 8, 2023↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 2,000 | $566.09 | $1.13M | 0 |
| Nov 7, 2023↗ | Riel Pierre | EVP | Sell | 3,000 | $571.11 | $1.71M | 0 |
| Nov 3, 2023↗ | Miller Russell D | Senior EVP | Sell | 4,500 | $557.75 | $2.51M | 0 |
| Oct 22, 2023↗ | Adamo Claudine | Executive Vice President | Sell | 3,306 | $549.88 | $1.82M | 0 |
| Oct 22, 2023↗ | Callans Patrick J | Executive VP | Sell | 2,532 | $552.88 | $1.40M | 0 |
| Oct 22, 2023↗ | Frates Caton | Executive Vice President | Sell | 933 | $552.99 | $515.9K | 0 |
| Oct 22, 2023↗ | Hines Daniel M. | Insider | Sell | 1,258 | $553.04 | $695.7K | 0 |
| Oct 22, 2023↗ | JELINEK W CRAIG | CEO | Sell | 5,434 | $552.81 | $3.00M | 0 |
| Oct 22, 2023↗ | Klauer James C | Executive Vice President | Sell | 1,265 | $553.15 | $699.7K | 0 |
| Oct 22, 2023↗ | Sullivan John Christopher | Executive VP | Sell | 2,347 | $552.94 | $1.30M | 0 |
| Oct 11, 2023↗ | Klauer James C | Executive Vice President | Sell | 1,500 | $562.01 | $843.0K | 0 |
| Oct 10, 2023↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 2,000 | $565.57 | $1.13M | 0 |
| Oct 9, 2023↗ | Callans Patrick J | Executive VP | Sell | 2,500 | $553.76 | $1.38M | 0 |
| Oct 6, 2023↗ | Frates Caton | Executive Vice President | Sell | 1,200 | $562.64 | $675.2K | 0 |
| Sep 19, 2023↗ | Riel Pierre | EVP | Sell | 2,725 | $556.32 | $1.52M | 0 |
| Sep 15, 2023↗ | Adamo Claudine | Executive Vice President | Sell | 1,679 | $556.49 | $934.3K | 0 |
| Sep 15, 2023↗ | Callans Patrick J | Executive VP | Sell | 705 | $556.43 | $392.3K | 0 |
| Sep 15, 2023↗ | Frates Caton | Executive Vice President | Sell | 2,186 | $556.38 | $1.22M | 0 |
| Sep 15, 2023↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 3,845 | $556.39 | $2.14M | 0 |
| Sep 15, 2023↗ | Klauer James C | Executive Vice President | Sell | 1,679 | $556.49 | $934.3K | 0 |
| Sep 15, 2023↗ | Miller Russell D | Senior EVP | Sell | 3,003 | $556.37 | $1.67M | 0 |
| Sep 15, 2023↗ | Rubanenko Yoram | Executive VP | Sell | 3,081 | $556.34 | $1.71M | 0 |
| Sep 15, 2023↗ | Vachris Roland Michael | President and COO | Sell | 5,491 | $556.34 | $3.05M | 0 |
| Jul 20, 2023↗ | Klauer James C | Executive Vice President | Sell | 4,000 | $981.07 | $3.92M | 0 |
| Jun 28, 2023↗ | DECKER SUSAN L | Director | Sell | 1,565 | $533.00 | $834.1K | 0 |
| Jun 13, 2023↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 1,500 | $522.03 | $783.0K | 0 |
| Jun 7, 2023↗ | DECKER SUSAN L | Director | Sell | 3,971 | $514.14 | $2.04M | 0 |
| Apr 11, 2023↗ | Frates Caton | Executive Vice President | Sell | 600 | $497.35 | $298.4K | 0 |
| Mar 14, 2023↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 2,068 | $483.32 | $999.5K | 0 |
| Mar 7, 2023↗ | Miller Russell D | Senior EVP | Sell | 1,500 | $488.95 | $733.4K | 0 |
| Mar 6, 2023↗ | Vachris Roland Michael | President and COO | Sell | 4,100 | $476.29 | $1.95M | 0 |
| Jan 27, 2023↗ | Klauer James C | Executive Vice President | Sell | 2,500 | $503.69 | $1.26M | 0 |
| Dec 12, 2022↗ | DECKER SUSAN L | Director | Sell | 952 | $483.00 | $459.8K | 0 |
| Nov 4, 2022↗ | Miller Russell D | Executive Vice President | Sell | 1,000 | $483.58 | $483.6K | 0 |
| Oct 26, 2022↗ | Adamo Claudine | Executive Vice President | Sell | 2,000 | $495.97 | $991.9K | 0 |
| Oct 25, 2022↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 1,500 | $477.65 | $716.5K | 0 |
| Oct 22, 2022↗ | Adamo Claudine | Executive Vice President | Sell | 2,254 | $478.18 | $1.08M | 0 |
| Oct 22, 2022↗ | Callans Patrick J | Executive VP | Sell | 2,653 | $478.18 | $1.27M | 0 |
| Oct 22, 2022↗ | Frates Caton | Executive Vice President | Sell | 706 | $478.18 | $337.6K | 0 |
| Oct 22, 2022↗ | Hines Daniel M. | Insider | Sell | 1,483 | $478.18 | $709.1K | 0 |
| Oct 22, 2022↗ | JELINEK W CRAIG | CEO | Sell | 2,711 | $478.18 | $1.30M | 0 |
| Oct 22, 2022↗ | Klauer James C | Executive Vice President | Sell | 1,328 | $478.18 | $635.0K | 0 |
| Oct 22, 2022↗ | Murphy James P. | Executive VP | Sell | 4,246 | $478.18 | $2.03M | 0 |
| Oct 22, 2022↗ | Rubananko Yoram | Executive VP | Sell | 2,530 | $478.18 | $1.21M | 0 |
| Oct 22, 2022↗ | Sullivan John Christopher | Executive VP | Sell | 2,487 | $478.18 | $1.19M | 0 |
| Oct 7, 2022↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 2,000 | $471.12 | $942.2K | 0 |
| Sep 12, 2022↗ | Callans Patrick J | Executive VP | Sell | 662 | $539.52 | $357.2K | 0 |
| Sep 12, 2022↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 3,155 | $539.52 | $1.70M | 0 |
| Sep 12, 2022↗ | Klauer James C | Executive Vice President | Sell | 1,600 | $539.52 | $863.2K | 0 |
| Sep 12, 2022↗ | Miller Russell D | Executive Vice President | Sell | 3,335 | $539.52 | $1.80M | 0 |
| Sep 12, 2022↗ | Rose Timothy L. | Executive VP | Sell | 2,538 | $539.52 | $1.37M | 0 |
| Sep 12, 2022↗ | Vachris Roland Michael | President | Sell | 4,461 | $539.52 | $2.41M | 0 |
| Aug 3, 2022↗ | Murphy James P. | Executive VP | Sell | 1,793 | $539.52 | $967.4K | 0 |
| Jul 20, 2022↗ | Murphy James P. | Executive VP | Sell | 1,500 | $525.20 | $787.8K | 0 |
| Jul 15, 2022↗ | DENMAN KENNETH D | Director | Sell | 300 | $521.68 | $156.5K | 0 |
| Jul 14, 2022↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 1,000 | $505.60 | $505.6K | 0 |
| Jun 22, 2022↗ | Murphy James P. | Executive VP | Sell | 2,500 | $464.00 | $1.16M | 0 |
| Apr 8, 2022↗ | Adamo Claudine | Executive Vice President | Sell | 500 | $602.03 | $301.0K | 0 |
| Apr 8, 2022↗ | Hines Daniel M. | Insider | Sell | 4,498 | $603.00 | $2.71M | 0 |
| Mar 29, 2022↗ | Rose Timothy L. | Executive VP | Sell | 4,000 | $566.29 | $2.27M | 0 |
| Mar 23, 2022↗ | DENMAN KENNETH D | Director | Sell | 250 | $554.68 | $138.7K | 0 |
| Jan 27, 2022↗ | Vachris Roland Michael | Executive VP | Sell | 3,318 | $492.44 | $1.63M | 0 |
| Dec 15, 2021↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 2,218 | $554.08 | $1.23M | 0 |
| Dec 13, 2021↗ | Callans Patrick J | Executive VP | Sell | 2,500 | $549.03 | $1.37M | 0 |
| Dec 13, 2021↗ | Murphy James P. | Executive VP | Sell | 5,000 | $559.32 | $2.80M | 0 |
| Dec 13, 2021↗ | Rubananko Yoram | Executive VP | Sell | 4,000 | $550.72 | $2.20M | 0 |
| Oct 22, 2021↗ | Callans Patrick J | Executive VP | Sell | 2,830 | $481.99 | $1.36M | 0 |
| Oct 22, 2021↗ | Hines Daniel M. | Insider | Sell | 4,151 | $481.99 | $2.00M | 0 |
| Oct 22, 2021↗ | JELINEK W CRAIG | President and CEO | Sell | 1,607 | $481.99 | $774.6K | 0 |
| Oct 22, 2021↗ | Murphy James P. | Executive VP | Sell | 1,979 | $481.99 | $953.9K | 0 |
| Oct 22, 2021↗ | Rubananko Yoram | Executive VP | Sell | 2,966 | $481.99 | $1.43M | 0 |
| Sep 28, 2021↗ | Klauer James C | Executive Vice President | Sell | 5,612 | $481.99 | $2.70M | 0 |
| Sep 21, 2021↗ | Miller Russell D | Executive Vice President | Sell | 4,000 | $556.02 | $2.22M | 0 |
| Sep 14, 2021↗ | Callans Patrick J | Executive VP | Sell | 855 | $458.41 | $391.9K | 0 |
| Sep 14, 2021↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 3,579 | $458.41 | $1.64M | 0 |
| Sep 14, 2021↗ | Klauer James C | Executive Vice President | Sell | 855 | $458.41 | $391.9K | 0 |
| Sep 14, 2021↗ | Miller Russell D | Executive Vice President | Sell | 4,134 | $458.41 | $1.90M | 0 |
| Sep 14, 2021↗ | MOULTON PAUL G | Executive VP | Sell | 3,214 | $458.41 | $1.47M | 0 |
| Sep 14, 2021↗ | Murphy James P. | Executive VP | Sell | 2,278 | $458.41 | $1.04M | 0 |
| Sep 14, 2021↗ | PORTERA JOSEPH P | Executive VP | Sell | 4,150 | $458.41 | $1.90M | 0 |
| Sep 14, 2021↗ | Rose Timothy L. | Executive VP | Sell | 3,214 | $458.41 | $1.47M | 0 |
| Sep 14, 2021↗ | Vachris Roland Michael | Executive VP | Sell | 3,579 | $458.41 | $1.64M | 0 |
| Jul 12, 2021↗ | Vachris Roland Michael | Executive VP | Sell | 4,000 | $409.40 | $1.64M | 0 |
| Jun 28, 2021↗ | Rose Timothy L. | Executive VP | Sell | 4,000 | $396.14 | $1.58M | 0 |
| Jun 14, 2021↗ | Klauer James C | Executive Vice President | Sell | 5,000 | $380.53 | $1.90M | 0 |
| Jun 7, 2021↗ | Callans Patrick J | Executive VP | Sell | 2,500 | $384.31 | $960.8K | 0 |
| Mar 22, 2021↗ | Vachris Roland Michael | Executive VP | Sell | 4,300 | $334.30 | $1.44M | 0 |
| Oct 9, 2020↗ | PORTERA JOSEPH P | Executive VP | Sell | 3,287 | $445.50 | $1.46M | 0 |
| Apr 29, 2011↗ | GALANTI RICHARD A | Executive VP and CFO | Sell | 2,230 | $372.06 | $829.7K | 0 |
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