Insider Trades93 trades
| Date↓ | Side | Ticker↕ | Insider↕ | Role↕ | Shares↕ | Price↕ | Mkt Cap↕ | 52W High↕ | 52W Low↕ | Value↕ | % Chg↕ | Rule↕ | AI View↕ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 1, 2026 | Sell | COST | Caton Frates | Executive Vice President | 700 | $993.00 | $417.3B | -14.19% | +11.47% | $695.1K | -10.74% | — | Sell Now |
| Mar 11, 2026 | Sell | COST | Gary Millerchip | Executive Vice President | 1,154.017 | $992.23 | $417.3B | -14.19% | +11.47% | $1.1M | -6.94% | — | Sell Now |
| Mar 9, 2026 | Sell | COST | Claudine Adamo | Executive Vice President | 730 | $1003.02 | $417.3B | -14.19% | +11.47% | $732.2K | -10.66% | — | Sell Now |
| Jan 27, 2026 | Sell | COST | Teresa A. Jones | Executive Vice President | 300 | $970.28 | $417.3B | -14.19% | +11.47% | $291.1K | -7.10% | — | Sell Now |
| Jan 21, 2026 | Sell | COST | Teresa A. Jones | Executive Vice President | 850 | $986.26 | $417.3B | -14.19% | +11.47% | $838.3K | -16.74% | — | Sell Now |
| Jan 14, 2026 | Sell | COST | James C Klauer | Executive Vice President | 1,500 | $939.00 | $417.3B | -14.19% | +11.47% | $1.4M | -3.24% | — | Sell Now |
| Jan 9, 2026 | Sell | COST | Russell D Miller | Sr. Executive Vice President | 1,500 | $916.32 | $417.3B | -14.19% | +11.47% | $1.4M | -15.40% | — | Sell Now |
| Dec 29, 2025 | Sell | COST | Javier Polit | Executive Vice President | 2,607.305 | $866.28 | $417.3B | -14.19% | +11.47% | $2.3M | -11.07% | — | Sell Now |
| Nov 7, 2025 | Sell | COST | William Richard Wilcox | Executive Vice President | 2,400 | $930.13 | $417.3B | -14.19% | +11.47% | $2.2M | -54.55% | — | Sell Now |
| Oct 22, 2025 | Sell | COST | Gary Millerchip | Executive Vice President | 813.37 | $944.68 | $417.3B | -14.19% | +11.47% | $768.4K | -2.35% | — | Sell Now |
| Oct 22, 2025 | Sell | COST | Patrick J Callans | Executive Vice President | 916.95 | $944.68 | $417.3B | -14.19% | +11.47% | $866.2K | -0.30% | — | Sell Now |
| Oct 22, 2025 | Sell | COST | James C Klauer | Executive Vice President | 917.35 | $944.68 | $417.3B | -14.19% | +11.47% | $866.6K | -0.39% | — | Sell Now |
| Oct 22, 2025 | Sell | COST | Javier Polit | Executive Vice President | 1,168.28 | $944.68 | $417.3B | -14.19% | +11.47% | $1.1M | -2.88% | — | Sell Now |
| Oct 22, 2025 | Sell | COST | John Christopher Sullivan | Executive VP | 2,513.54 | $944.68 | $417.3B | -14.19% | +11.47% | $2.4M | -1.02% | — | Sell Now |
| Oct 22, 2025 | Sell | COST | Roland Michael Vachris | President and CEO | 2,652.8 | $944.68 | $417.3B | -14.19% | +11.47% | $2.5M | -2.45% | — | Sell Now |
| Oct 22, 2025 | Sell | COST | Caton Frates | Executive Vice President | 2,768.69 | $944.68 | $417.3B | -14.19% | +11.47% | $2.6M | -6.49% | — | Sell Now |
| Oct 22, 2025 | Sell | COST | Claudine Adamo | Executive Vice President | 3,404.64 | $937.54 | $417.3B | -14.19% | +11.47% | $3.2M | -5.72% | — | Sell Now |
| Sep 29, 2025 | Sell | COST | Caton Frates | Executive Vice President | 1,540 | $910.02 | $417.3B | -14.19% | +11.47% | $1.4M | -14.23% | — | Sell Now |
| Sep 29, 2025 | Sell | COST | Russell D Miller | Sr. Executive Vice President | 3,381 | $915.00 | $417.3B | -14.19% | +11.47% | $3.1M | -25.77% | — | Sell Now |
| Sep 23, 2025 | Sell | COST | Russell D Miller | Sr. Executive Vice President | 5,836 | $943.60 | $417.3B | -14.19% | +11.47% | $5.5M | +0.00% | — | Sell Now |
| Sep 10, 2025 | Sell | COST | Claudine Adamo | Executive Vice President | 949.666 | $956.29 | $417.3B | -14.19% | +11.47% | $908.2K | -8.47% | — | Sell Now |
| Sep 10, 2025 | Sell | COST | Patrick J Callans | Executive Vice President | 949.666 | $956.29 | $417.3B | -14.19% | +11.47% | $908.2K | -1.51% | — | Sell Now |
| Sep 10, 2025 | Sell | COST | James C Klauer | Executive Vice President | 958.287 | $956.29 | $417.3B | -14.19% | +11.47% | $916.4K | -1.99% | — | Sell Now |
| Sep 10, 2025 | Sell | COST | Caton Frates | Executive Vice President | 1,271.078 | $956.29 | $417.3B | -14.19% | +11.47% | $1.2M | -10.51% | — | Sell Now |
| Sep 10, 2025 | Sell | COST | Teresa A. Jones | Executive Vice President | 1,503.321 | $956.29 | $417.3B | -14.19% | +11.47% | $1.4M | -22.84% | — | Sell Now |
| Sep 10, 2025 | Sell | COST | Pierre Riel | Executive Vice President | 1,608.361 | $956.29 | $417.3B | -14.19% | +11.47% | $1.5M | -12.50% | — | Sell Now |
| Sep 10, 2025 | Sell | COST | Russell D Miller | Sr. Executive Vice President | 1,735.085 | $956.29 | $417.3B | -14.19% | +11.47% | $1.7M | -37.27% | — | Sell Now |
| Sep 10, 2025 | Sell | COST | Yoram Rubanenko | Executive Vice President | 1,745.913 | $956.29 | $417.3B | -14.19% | +11.47% | $1.7M | -17.47% | — | Sell Now |
| Aug 20, 2025 | Sell | COST | Teresa A. Jones | Executive Vice President | 600 | $992.05 | $417.3B | -14.19% | +11.47% | $595.2K | -20.26% | — | Sell Now |
| Jul 14, 2025 | Sell | COST | Yoram Rubanenko | Executive Vice President | 4,000 | $974.96 | $417.3B | -14.19% | +11.47% | $3.9M | -40.92% | — | Sell Now |
| Jun 9, 2025 | Sell | COST | Patrick J Callans | Executive Vice President | 3,000 | $1002.77 | $417.3B | -14.19% | +11.47% | $3.0M | -4.87% | — | Sell Now |
| Jun 6, 2025 | Sell | COST | Pierre Riel | Executive Vice President | 2,000 | $1014.15 | $417.3B | -14.19% | +11.47% | $2.0M | -19.59% | — | Sell Now |
| Apr 17, 2025 | Sell | COST | James C Klauer | Executive Vice President | 4,000 | $981.07 | $417.3B | -14.19% | +11.47% | $3.9M | -8.33% | — | Sell Now |
| Mar 27, 2025 | Sell | COST | Gary Millerchip | Executive Vice President | 1,100 | $940.01 | $417.3B | -14.19% | +11.47% | $1.0M | -8.97% | — | Sell Now |
| Mar 24, 2025 | Sell | COST | Claudine Adamo | Executive Vice President | 900 | $922.56 | $417.3B | -14.19% | +11.47% | $830.3K | -11.41% | — | Sell Now |
| Mar 18, 2025 | Sell | COST | Caton Frates | Executive Vice President | 850 | $900.25 | $417.3B | -14.19% | +11.47% | $765.2K | -9.74% | — | Sell Now |
| Mar 11, 2025 | Sell | COST | Gary Millerchip | Executive Vice President | 1,147.255 | $930.49 | $417.3B | -14.19% | +11.47% | $1.1M | -8.55% | — | Sell Now |
| Mar 11, 2025 | Sell | COST | Roland Michael Vachris | President and CEO | 3,600 | $931.00 | $417.3B | -14.19% | +11.47% | $3.4M | -8.06% | — | Sell Now |
| Oct 24, 2024 | Sell | COST | Richard A Galanti | Executive Vice President | 1,416.461 | $894.68 | $417.3B | -14.19% | +11.47% | $1.3M | -4.92% | — | Sell Now |
| Oct 22, 2024 | Sell | COST | Gary Millerchip | Executive Vice President | 313.052 | $893.49 | $417.3B | -14.19% | +11.47% | $279.7K | -2.28% | — | Sell Now |
| Oct 22, 2024 | Sell | COST | Javier Polit | Executive Vice President | 674.067 | $893.49 | $417.3B | -14.19% | +11.47% | $602.3K | -3.29% | — | Sell Now |
| Oct 22, 2024 | Sell | COST | Claudine Adamo | Executive Vice President | 743.084 | $893.49 | $417.3B | -14.19% | +11.47% | $663.9K | -1.78% | — | Sell Now |
| Oct 22, 2024 | Sell | COST | Caton Frates | Executive Vice President | 956.523 | $893.49 | $417.3B | -14.19% | +11.47% | $854.6K | -2.05% | — | Sell Now |
| Oct 22, 2024 | Sell | COST | James C Klauer | Executive Vice President | 1,097.2 | $893.49 | $417.3B | -14.19% | +11.47% | $980.3K | -0.45% | — | Sell Now |
| Oct 22, 2024 | Sell | COST | Roland Michael Vachris | President and CEO | 1,730.863 | $893.49 | $417.3B | -14.19% | +11.47% | $1.5M | -3.73% | — | Sell Now |
| Oct 22, 2024 | Sell | COST | Teresa A. Jones | Executive Vice President | 1,974.075 | $894.73 | $417.3B | -14.19% | +11.47% | $1.8M | -7.25% | — | Sell Now |
| Oct 22, 2024 | Sell | COST | John Christopher Sullivan | Executive VP | 2,520.835 | $893.49 | $417.3B | -14.19% | +11.47% | $2.3M | -1.07% | — | Sell Now |
| Oct 22, 2024 | Sell | COST | Patrick J Callans | Executive Vice President | 4,120.8 | $893.49 | $417.3B | -14.19% | +11.47% | $3.7M | -1.28% | — | Sell Now |
| Oct 15, 2024 | Sell | COST | Pierre Riel | Executive Vice President | 2,000 | $896.71 | $417.3B | -14.19% | +11.47% | $1.8M | -16.38% | — | Sell Now |
| Oct 11, 2024 | Sell | COST | Russell D Miller | Sr. Executive Vice President | 4,400 | $891.15 | $417.3B | -14.19% | +11.47% | $3.9M | -30.13% | — | Sell Now |
| Sep 30, 2024 | Sell | COST | Caton Frates | Executive Vice President | 1,700 | $883.35 | $417.3B | -14.19% | +11.47% | $1.5M | -14.94% | — | Sell Now |
| Sep 30, 2024 | Sell | COST | Patrick J Callans | Executive Vice President | 3,250 | $687.65 | $417.3B | -14.19% | +11.47% | $2.2M | -2.40% | — | Sell Now |
| Sep 30, 2024 | Sell | COST | Claudine Adamo | Executive Vice President | 3,200 | $888.99 | $417.3B | -14.19% | +11.47% | $2.8M | -27.05% | — | Sell Now |
| Sep 24, 2024 | Sell | COST | Russell D Miller | Sr. Executive Vice President | 9,204 | $901.54 | $417.3B | -14.19% | +11.47% | $8.3M | +0.00% | — | Sell Now |
| Sep 16, 2024 | Sell | COST | Patrick J Callans | Executive Vice President | 718.465 | $907.87 | $417.3B | -14.19% | +11.47% | $652.3K | -1.03% | — | Sell Now |
| Sep 16, 2024 | Sell | COST | Claudine Adamo | Executive Vice President | 1,602.151 | $907.87 | $417.3B | -14.19% | +11.47% | $1.5M | -11.93% | — | Sell Now |
| Sep 16, 2024 | Sell | COST | James C Klauer | Executive Vice President | 1,610.418 | $907.87 | $417.3B | -14.19% | +11.47% | $1.5M | -3.18% | — | Sell Now |
| Sep 16, 2024 | Sell | COST | Caton Frates | Executive Vice President | 2,111.028 | $907.87 | $417.3B | -14.19% | +11.47% | $1.9M | -15.64% | — | Sell Now |
| Sep 16, 2024 | Sell | COST | Pierre Riel | Executive Vice President | 2,645.366 | $907.87 | $417.3B | -14.19% | +11.47% | $2.4M | -17.81% | — | Sell Now |
| Sep 16, 2024 | Sell | COST | Russell D Miller | Senior EVP | 2,832.072 | $907.87 | $417.3B | -14.19% | +11.47% | $2.6M | -38.09% | — | Sell Now |
| Sep 16, 2024 | Sell | COST | Yoram Rubanenko | Executive Vice President | 2,873.222 | $907.87 | $417.3B | -14.19% | +11.47% | $2.6M | -22.72% | — | Sell Now |
| Sep 16, 2024 | Sell | COST | Richard A Galanti | Executive Vice President | 3,566.209 | $907.87 | $417.3B | -14.19% | +11.47% | $3.2M | -11.01% | — | Sell Now |
| Aug 13, 2024 | Sell | COST | Richard A Galanti | Executive Vice President | 1,400 | $620.69 | $417.3B | -14.19% | +11.47% | $869.0K | -1.96% | — | Sell Now |
| Jul 25, 2024 | Sell | COST | Teresa A. Jones | Executive Vice President | 4 | $832.55 | $417.3B | -14.19% | +11.47% | $3.3K | -0.08% | — | Sell Now |
| Apr 17, 2024 | Sell | COST | Russell D Miller | Senior EVP | 785 | $722.86 | $417.3B | -14.19% | +11.47% | $567.4K | -7.28% | — | Sell Now |
| Mar 11, 2024 | Sell | COST | Claudine Adamo | Executive Vice President | 1,500 | $714.83 | $417.3B | -14.19% | +11.47% | $1.1M | -18.30% | — | Sell Now |
| Mar 11, 2024 | Sell | COST | Patrick J Callans | Executive VP | 2,500 | $714.86 | $417.3B | -14.19% | +11.47% | $1.8M | -3.82% | — | Sell Now |
| Jan 18, 2024 | Sell | COST | Yoram Rubanenko | Executive VP | 2,500 | $680.33 | $417.3B | -14.19% | +11.47% | $1.7M | -29.73% | — | Sell Now |
| Jan 16, 2024 | Sell | COST | Caton Frates | Executive Vice President | 740 | $683.50 | $417.3B | -14.19% | +11.47% | $505.8K | -9.92% | — | Sell Now |
| Dec 28, 2023 | Sell | COST | W Craig Jelinek | CEO | 1,900 | $663.10 | $417.3B | -14.19% | +11.47% | $1.3M | -0.84% | — | Sell Now |
| Dec 19, 2023 | Sell | COST | Richard A Galanti | Executive VP and CFO | 1,111.78 | $680.21 | $417.3B | -14.19% | +11.47% | $756.2K | -4.38% | — | Sell Now |
| Nov 8, 2023 | Sell | COST | Richard A Galanti | Executive VP and CFO | 2,000 | $566.09 | $417.3B | -14.19% | +11.47% | $1.1M | -3.72% | — | Sell Now |
| Nov 7, 2023 | Sell | COST | Pierre Riel | EVP | 3,000 | $571.12 | $417.3B | -14.19% | +11.47% | $1.7M | -28.78% | — | Sell Now |
| Nov 3, 2023 | Sell | COST | Russell D Miller | Senior EVP | 4,500 | $557.75 | $417.3B | -14.19% | +11.47% | $2.5M | -29.44% | — | Sell Now |
| Oct 22, 2023 | Sell | COST | Caton Frates | Executive Vice President | 933.097 | $552.93 | $417.3B | -14.19% | +11.47% | $515.9K | -2.36% | — | Sell Now |
| Oct 22, 2023 | Sell | COST | James C Klauer | Executive Vice President | 1,265.498 | $552.93 | $417.3B | -14.19% | +11.47% | $699.7K | -0.57% | — | Sell Now |
| Oct 22, 2023 | Sell | COST | John Christopher Sullivan | Executive VP | 2,347.069 | $552.93 | $417.3B | -14.19% | +11.47% | $1.3M | -1.12% | — | Sell Now |
| Oct 22, 2023 | Sell | COST | Patrick J Callans | Executive VP | 2,531.781 | $552.93 | $417.3B | -14.19% | +11.47% | $1.4M | -0.76% | — | Sell Now |
| Oct 22, 2023 | Sell | COST | Claudine Adamo | Executive Vice President | 3,306.356 | $549.82 | $417.3B | -14.19% | +11.47% | $1.8M | -5.00% | — | Sell Now |
| Oct 22, 2023 | Sell | COST | W Craig Jelinek | CEO | 5,432.819 | $552.93 | $417.3B | -14.19% | +11.47% | $3.0M | -0.79% | — | Sell Now |
| Oct 11, 2023 | Sell | COST | James C Klauer | Executive Vice President | 1,500 | $562.01 | $417.3B | -14.19% | +11.47% | $843.0K | -3.22% | — | Sell Now |
| Oct 10, 2023 | Sell | COST | Richard A Galanti | Executive VP and CFO | 2,324 | $486.72 | $417.3B | -14.19% | +11.47% | $1.1M | -3.84% | — | Sell Now |
| Oct 6, 2023 | Sell | COST | Caton Frates | Executive Vice President | 1,200 | $562.64 | $417.3B | -14.19% | +11.47% | $675.2K | -12.55% | — | Sell Now |
| Sep 26, 2023 | Sell | COST | Russell D Miller | Senior EVP | 10,384 | $552.96 | $417.3B | -14.19% | +11.47% | $5.7M | +0.00% | — | Sell Now |
| Sep 15, 2023 | Sell | COST | Patrick J Callans | Executive VP | 705.09 | $556.36 | $417.3B | -14.19% | +11.47% | $392.3K | -0.99% | — | Sell Now |
| Sep 15, 2023 | Sell | COST | James C Klauer | Executive Vice President | 1,679.396 | $556.36 | $417.3B | -14.19% | +11.47% | $934.3K | -3.48% | — | Sell Now |
| Sep 15, 2023 | Sell | COST | Claudine Adamo | Executive Vice President | 1,679.396 | $556.36 | $417.3B | -14.19% | +11.47% | $934.3K | -12.81% | — | Sell Now |
| Sep 15, 2023 | Sell | COST | Caton Frates | Executive Vice President | 2,186.088 | $556.36 | $417.3B | -14.19% | +11.47% | $1.2M | -18.61% | — | Sell Now |
| Sep 15, 2023 | Sell | COST | Pierre Riel | EVP | 2,724.824 | $556.36 | $417.3B | -14.19% | +11.47% | $1.5M | -20.73% | — | Sell Now |
| Sep 15, 2023 | Sell | COST | Russell D Miller | Senior EVP | 3,003.054 | $556.36 | $417.3B | -14.19% | +11.47% | $1.7M | -36.64% | — | Sell Now |
| Sep 15, 2023 | Sell | COST | Yoram Rubanenko | Executive VP | 3,080.87 | $556.36 | $417.3B | -14.19% | +11.47% | $1.7M | -26.81% | — | Sell Now |
| Sep 15, 2023 | Sell | COST | Richard A Galanti | Executive VP and CFO | 3,845.22 | $556.36 | $417.3B | -14.19% | +11.47% | $2.1M | -11.21% | — | Sell Now |
| Sep 15, 2023 | Sell | COST | Roland Michael Vachris | President and COO | 5,490.837 | $556.36 | $417.3B | -14.19% | +11.47% | $3.1M | -16.77% | — | Sell Now |