Costco Wholesale's three largest insider shareholders as of March 23, 2026 are W Craig Jelinek (Director, 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 |
|---|---|---|---|---|
| W Craig Jelinek | 204,365 | 0 | 23 Dec, 2024 | |
| Charles T Munger | 168,104 | 0 | 24 Oct, 2023 | |
| Patrick J Callans | Executive Vice President | 60,895 | 0 | 24 Oct, 2025 |
| Hamilton E James | 55,538 | 0 | 24 Oct, 2025 | |
| Roland Michael Vachris | President And Ceo | 52,258 | 0 | 24 Oct, 2025 |
| John Christopher Sullivan | Executive Vp | 47,671 | 0 | 24 Oct, 2025 |
| James C Klauer | Executive Vice President | 44,837 | 0 | 15 Jan, 2026 |
| James P. Murphy | Executive Vp | 38,084 | 0 | 25 Oct, 2022 |
| Timothy L. Rose | Executive Vp | 33,025 | 0 | 14 Sep, 2022 |
| Paul G Moulton | Executive Vp | 28,833 | 0 | 16 Sep, 2021 |
| Richard A Galanti | Executive Vice President | 27,400 | 0 | 24 Oct, 2024 |
| John W Stanton | 24,090 | 0 | 24 Oct, 2025 | |
| Gary Millerchip | Executive Vice President | 15,465 | 0 | 13 Mar, 2026 |
| Daniel M. Hines | 12,186 | 0 | 24 Oct, 2024 | |
| Joseph P Portera | Executive Vp | 11,987 | 0 | 16 Sep, 2021 |
| Jeffrey S Raikes | 11,293 | 0 | 28 Jan, 2026 | |
| Pierre Riel | Executive Vice President | 11,256 | 0 | 12 Sep, 2025 |
| Javier Polit | Executive Vice President | 10,190 | 0 | 31 Dec, 2025 |
| Susan L Decker | 8,532 | 0 | 20 Jan, 2026 | |
| Yoram Rubanenko | Executive Vice President | 8,247 | 0 | 12 Sep, 2025 |
| Russell D Miller | Sr. Executive Vice President | 0 | 8,240 | 12 Jan, 2026 |
| Caton Frates | Executive Vice President | 6,515 | 0 | 24 Oct, 2025 |
| Kenneth D Denman | 5,664 | 0 | 22 Dec, 2025 | |
| Teresa A. Jones | Executive Vice President | 3,928 | 0 | 28 Jan, 2026 |
| Sarah Mr Sally Jewell | 3,613 | 0 | 24 Oct, 2025 | |
| Richard M Libenson | 3,561 | 0 | 26 Oct, 2021 | |
| Mary Agnes Wilderotter | 3,205 | 0 | 24 Oct, 2025 | |
| William Richard Wilcox | Executive Vice President | 2,000 | 0 | 12 Nov, 2025 |
| Helena Foulkes | 1,087 | 0 | 24 Oct, 2025 | |
| Gina Marie Raimondo | 215 | 0 | 20 Jan, 2026 | |
| John W Stanton | 0 | 211 | 04 Sep, 2025 | |
| Russell D Miller | Sr. Executive Vice President | 2 | 0 | 24 Sep, 2025 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 12 Mar, 2026 | Sarah Catherine George | Common Stock | D | 642 | $991.21 | 0 | I | I |
| 11 Mar, 2026 | Gary Millerchip | Common Stock | D | 1,154 | $992.23 | 15,465 | D | F |
| 27 Jan, 2026 | Teresa A. Jones | Common Stock | D | 300 | $0.00 | 3,928 | D | G |
| 27 Jan, 2026 | Jeffrey S Raikes | Common Stock | D | 5,115 | $0.00 | 11,293 | D | G |
| 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 | Susan L Decker | Common Stock | D | 458 | $955.00 | 8,532 | 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 |
| 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 |
| 19 Dec, 2025 | Kenneth D Denman | Common Stock | D | 325 | $0.00 | 5,664 | D | G |
| 15 Dec, 2025 | Susan L Decker | Common Stock | D | 2,827 | $0.00 | 8,990 | D | G |
| 10 Nov, 2025 | Jeffrey S Raikes | Common Stock | D | 4,120 | $0.00 | 16,408 | D | G |
| 07 Nov, 2025 | William Richard Wilcox | Common Stock | D | 2,400 | $930.13 | 2,000 | D | S |
| 22 Oct, 2025 | Kenneth D Denman | Common Stock | A | 286 | $0.00 | 5,989 | D | A |
| 22 Oct, 2025 | Jeffrey S Raikes | Common Stock | A | 286 | $0.00 | 20,528 | D | A |
| 22 Oct, 2025 | Hamilton E James | Common Stock | A | 286 | $0.00 | 55,538 | D | A |
| 22 Oct, 2025 | John Christopher Sullivan | Common Stock | A | 4,654 | $0.00 | 50,185 | D | A |
| 22 Oct, 2025 | Sarah Mr Sally Jewell | Common Stock | A | 286 | $0.00 | 3,613 | D | A |