Director William R. Shepard bought CME Group Inc. ($CME) shares on the open market eight times in the last year, for a total of nearly $290,000. His most recent purchase was on December 30, 2025. These buys rank him 1,188th among nearly 5,000 insiders by purchase value, below the average of about $1.5 million across 3.3 transactions per insider. Shepard made no open market sales in the period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 26, 2026 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 62 | $297.38 | 262,656.9900 | 360,596,647 | 0.02% | 0.00% |
| March 26, 2026 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 1408 | $297.38 | 262,656.9900 | 360,596,647 | 0.54% | 0.00% |
| Dec. 30, 2025 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 251 | $278.37 | 261,187.1500 | 360,596,647 | 0.10% | 0.00% |
| Dec. 30, 2025 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 11 | $278.37 | 261,187.1500 | 360,596,647 | 0.00% | 0.00% |
| Sept. 25, 2025 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 262 | $265.19 | 260,924.8820 | 360,354,174 | 0.10% | 0.00% |
| Sept. 25, 2025 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 12 | $265.22 | 260,924.8820 | 360,354,174 | 0.00% | 0.00% |
| June 25, 2025 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 11 | $270.53 | 260,650.8470 | 360,354,174 | 0.00% | 0.00% |
| June 25, 2025 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 256 | $270.53 | 260,650.8470 | 360,354,174 | 0.10% | 0.00% |
| June 25, 2025 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | A | Common Stock Class A | 879 | $273.03 | 260,394.7500 | 360,354,174 | 0.34% | 0.00% |
| March 26, 2025 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 263 | $262.62 | 259,504.4600 | 360,354,174 | 0.10% | 0.00% |
| Jan. 16, 2025 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 1362 | $227.96 | 259,230.3200 | 0 | 0.53% | 0.00% |
| Jan. 16, 2025 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 60 | $227.96 | 259,230.3200 | 0 | 0.02% | 0.00% |
| March 26, 2025 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 12 | $262.62 | 259,504.4600 | 360,354,174 | 0.00% | 0.00% |
| Jan. 16, 2025 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 1369 | $227.96 | 259,237.3400 | 0 | 0.53% | 0.00% |
| Jan. 16, 2025 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 60 | $227.96 | 259,237.3400 | 0 | 0.02% | 0.00% |
| Dec. 27, 2024 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 264 | $232.89 | 257,808.1500 | 0 | 0.10% | 0.00% |
| Dec. 27, 2024 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 12 | $232.89 | 257,808.1500 | 0 | 0.00% | 0.00% |
| Sept. 25, 2024 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 12 | $218.50 | 257,532.1253 | 0 | 0.00% | 0.00% |
| Sept. 25, 2024 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 280 | $218.50 | 257,532.1253 | 0 | 0.11% | 0.00% |
| June 25, 2024 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 14 | $195.07 | 257,239.4703 | 0 | 0.01% | 0.00% |
| June 25, 2024 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 312 | $195.07 | 256,002.4703 | 0 | 0.12% | 0.00% |
| June 25, 2024 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | A | Common Stock Class A | 1237 | $194.10 | 257,239.4703 | 0 | 0.48% | 0.00% |
| March 26, 2024 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 282 | $214.71 | 255,676.5923 | 0 | 0.11% | 0.00% |
| March 26, 2024 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 12 | $214.71 | 255,676.5923 | 0 | 0.00% | 0.00% |
| Jan. 18, 2024 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 1331 | $202.44 | 255,382.0963 | 0 | 0.52% | 0.00% |
| Jan. 18, 2024 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 59 | $202.44 | 255,382.0963 | 0 | 0.02% | 0.00% |
| Dec. 28, 2023 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 266 | $210.79 | 253,992.2113 | 0 | 0.11% | 0.00% |
| Dec. 28, 2023 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 12 | $210.79 | 253,992.2113 | 0 | 0.00% | 0.00% |
| Sept. 27, 2023 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 12 | $199.84 | 253,713.9913 | 0 | 0.00% | 0.00% |
| Sept. 27, 2023 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 280 | $199.84 | 253,713.9913 | 0 | 0.11% | 0.00% |
| June 26, 2023 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | A | Common Stock Class A | 811 | $178.89 | 253,113.2713 | 0 | 0.32% | 0.00% |
| June 27, 2023 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 309 | $179.77 | 253,422.1283 | 0 | 0.12% | 0.00% |
| June 27, 2023 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 14 | $179.77 | 253,422.1283 | 0 | 0.01% | 0.00% |
| Jan. 18, 2023 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 55 | $175.98 | 251,782.8030 | 0 | 0.02% | 0.00% |
| Jan. 18, 2023 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 1244 | $175.98 | 251,782.8030 | 0 | 0.50% | 0.00% |
| Dec. 28, 2022 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 289 | $168.11 | 250,344.1880 | 0 | 0.12% | 0.00% |
| Dec. 28, 2022 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 13 | $168.11 | 251,727.9640 | 0 | 0.01% | 0.00% |
| Dec. 29, 2022 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 195 | $168.67 | 248,326.7529 | 0 | 0.08% | 0.00% |
| March 28, 2023 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 195 | $186.45 | 252,288.6553 | 0 | 0.08% | 0.00% |
| March 27, 2023 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 298 | $185.32 | 252,093.7680 | 0 | 0.12% | 0.00% |
| March 27, 2023 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 13 | $185.32 | 252,288.6553 | 0 | 0.01% | 0.00% |
| Jan. 18, 2023 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 55 | $175.98 | 251,588.1110 | 0 | 0.02% | 0.00% |
| Jan. 18, 2023 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 1244 | $175.98 | 251,588.1110 | 0 | 0.50% | 0.00% |
| Dec. 28, 2022 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 13 | $168.11 | 251,533.2720 | 0 | 0.01% | 0.00% |
| Dec. 28, 2022 | CME GROUP INC. | $CME | SHEPARD WILLIAM R | Director | P | Common Stock Class A | 289 | $168.11 | 250,344.1880 | 0 | 0.12% | 0.00% |