As of June 06, 2026, the three largest insider holders of COST are W Craig Jelinek (Ceo, 204.37K shares), Charles T Munger (Director, 168.10K shares), Patrick J Callans (Executive Vice President, 60.89K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| John W Stanton | - | 24,090 | 0 | 24 Oct, 2025 |
| Charles T Munger | - | 168,104 | 0 | 24 Oct, 2023 |
| Sarah Mr Sally Jewell | - | 3,613 | 0 | 24 Oct, 2025 |
| Mary Agnes Wilderotter | - | 3,205 | 0 | 24 Oct, 2025 |
| Richard A Galanti | Executive Vice President | 27,400 | 0 | 24 Oct, 2024 |
| W Craig Jelinek | Ceo | 204,365 | 0 | 23 Dec, 2024 |
| Joseph P Portera | Executive Vp | 11,987 | 0 | 16 Sep, 2021 |
| Paul G Moulton | Executive Vp | 28,833 | 0 | 16 Sep, 2021 |
| Richard M Libenson | - | 3,561 | 0 | 26 Oct, 2021 |
| Jeffrey S Raikes | - | 11,293 | 0 | 28 Jan, 2026 |
| Hamilton E James | Chairman Of The Board | 55,538 | 0 | 24 Oct, 2025 |
| Helena Foulkes | - | 1,087 | 0 | 24 Oct, 2025 |
| Timothy L. Rose | Executive Vp | 33,025 | 0 | 14 Sep, 2022 |
| Roland Michael Vachris | President And Ceo | 52,258 | 0 | 24 Oct, 2025 |
| Daniel M. Hines | - | 12,186 | 0 | 24 Oct, 2024 |
| James C Klauer | Executive Vice President | 44,837 | 0 | 15 Jan, 2026 |
| Russell D Miller | Sr. Executive Vice President | 0 | 8,240 | 12 Jan, 2026 |
| Patrick J Callans | Executive Vice President | 60,895 | 0 | 24 Oct, 2025 |
| Javier Polit | Executive Vice President | 10,190 | 0 | 31 Dec, 2025 |
| Yoram Rubanenko | Executive Vice President | 8,247 | 0 | 12 Sep, 2025 |
| John Christopher Sullivan | Executive Vp | 47,671 | 0 | 24 Oct, 2025 |
| Claudine Adamo | Executive Vice President | 6,121 | 0 | 11 Mar, 2026 |
| Pierre Riel | Executive Vice President | 11,256 | 0 | 12 Sep, 2025 |
| Caton Frates | Executive Vice President | 5,815 | 0 | 01 Apr, 2026 |
| Teresa A. Jones | Executive Vice President | 3,928 | 0 | 28 Jan, 2026 |
| Tiffany Marie Barbre | - | 5,155 | 0 | 24 Oct, 2025 |
| William Richard Wilcox | Executive Vice President | 2,000 | 0 | 12 Nov, 2025 |
| Gina Marie Raimondo | - | 215 | 0 | 20 Jan, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 01 Apr, 2026 | Caton Frates | Common Stock | D | 700 | $993.00 | 5,815 | D | S |
| 01 Apr, 2026 | Caton Frates | Common Stock | D | 700 | $993.00 | 5,815 | D | S |
| 12 Mar, 2026 | Sarah Catherine George | Common Stock | D | 642 | $991.21 | 0 | I | I |
| 12 Mar, 2026 | Sarah Catherine George | Common Stock | D | 642 | $991.21 | 0 | I | I |
| 09 Mar, 2026 | Claudine Adamo | Common Stock | D | 730 | $1,003.02 | 6,121 | D | S |
| 27 Jan, 2026 | Jeffrey S Raikes | Common Stock | D | 5,115 | $0.00 | 11,293 | D | G |
| 27 Jan, 2026 | Jeffrey S Raikes | Common Stock | D | 5,115 | $0.00 | 11,293 | D | G |
| 27 Jan, 2026 | Teresa A. Jones | Common Stock | D | 300 | $0.00 | 3,928 | D | G |
| 27 Jan, 2026 | Teresa A. Jones | Common Stock | D | 300 | $0.00 | 3,928 | D | G |
| 21 Jan, 2026 | Teresa A. Jones | Common Stock | D | 850 | $986.26 | 4,228 | D | S |
| 21 Jan, 2026 | Teresa A. Jones | Common Stock | D | 850 | $986.26 | 4,228 | D | S |
| 16 Jan, 2026 | Gina Marie Raimondo | Common Stock | A | 215 | $0.00 | 215 | D | A |
| 16 Jan, 2026 | Gina Marie Raimondo | Common Stock | A | 215 | $0.00 | 215 | D | A |
| 14 Jan, 2026 | James C Klauer | Common Stock | D | 1,500 | $939.00 | 44,837 | D | S |
| 14 Jan, 2026 | James C Klauer | Common Stock | D | 1,500 | $939.00 | 44,837 | D | S |
| 09 Jan, 2026 | Russell D Miller | Common Stock | D | 1,500 | $916.32 | 8,240 | I | S |
| 09 Jan, 2026 | Russell D Miller | Common Stock | D | 1,500 | $916.32 | 8,240 | I | S |
| 29 Dec, 2025 | Javier Polit | Common Stock | D | 2,049 | $867.21 | 10,748 | D | S |
| 29 Dec, 2025 | Javier Polit | Common Stock | D | 2,049 | $867.21 | 10,748 | D | S |
| 30 Dec, 2025 | Javier Polit | Common Stock | D | 558 | $862.90 | 10,190 | D | S |