Mark F. O'Neil, a director at CarMax Inc. ($KMX), made one open market purchase of shares in the last year, totaling nearly $500,000. His most recent buy occurred on October 2, 2025. This ranks him 861st among nearly 5,000 individual insiders by purchase value, below the average of $1.46 million across about 3.3 transactions per insider. O'Neil reported 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct. 2, 2025 | CARMAX INC | $KMX | ONeil Mark F | Director | P | Common Stock | 10816 | $46.21 | 24,690.0000 | 147,673,000 | 77.96% | 0.01% |
| June 30, 2025 | CARMAX INC | $KMX | ONeil Mark F | Director | A | Common Stock | 2753 | $0.00 | 13,874.0000 | 150,582,000 | 24.75% | 0.00% |
| July 1, 2024 | CARMAX INC | $KMX | ONeil Mark F | Director | A | Common Stock | 2598 | $0.00 | 11,121.0000 | 156,353,000 | 30.48% | 0.00% |