🕵️ Carmax Inc ($KMX)
SEC insider & ownership activity, last 12 months · CIK 1170010 · every row links its SEC filing
Insider buy value was withheld pending verification over the last 12 months. BlackRock, Inc. added 6.5% → 11.4%. No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
6 buyers, value withheld pending verification (9 lots) · 0 sellers, $0 (0 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Mark F. Oneil | 4 | value withheld pending verification | 0 | – | Jun 24, 2026 |
| Barr Keith | 1 | $498K | 0 | – | Jun 22, 2026 |
| Peter J. Bensen | 1 | $130K | 0 | – | Jun 22, 2026 |
| Chawla Sona | 1 | $107K | 0 | – | Jun 25, 2026 |
| Mitchell D. Steenrod | 1 | $91K | 0 | – | Oct 2, 2025 |
| Shinder Marcella | 1 | $30K | 0 | – | Jun 25, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| BlackRock, Inc. | 11.4% | 13G | Nov 6, 2025 | filing ↗ | |
| Vanguard Capital Management | 5.3% | 13G | Apr 29, 2026 | filing ↗ | |
| Vanguard Portfolio Management | 5.2% | 13G | Apr 29, 2026 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Officer/director changes (5.02) | Jul 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 29, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jun 23, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 23, 2026 | filing ↗ |
| Earnings (2.02) | Jun 17, 2026 | filing ↗ |
| New financial obligation (2.03) | Jun 17, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 17, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jun 3, 2026 | filing ↗ |
| Officer/director changes (5.02) | May 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 12, 2026 | filing ↗ |
| Earnings (2.02) | Apr 14, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 14, 2026 | filing ↗ |
| Officer/director changes (5.02) | Apr 8, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 8, 2026 | filing ↗ |
| Officer/director changes (5.02) | Mar 1, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 1, 2026 | filing ↗ |
| Officer/director changes (5.02) | Feb 10, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 10, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 10, 2026 | filing ↗ |
| Earnings (2.02) | Dec 18, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 18, 2025 | filing ↗ |
| Earnings (2.02) | Nov 4, 2025 | filing ↗ |
| Officer/director changes (5.02) | Nov 4, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Nov 4, 2025 | filing ↗ |
| Other events (8.01) | Nov 4, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 4, 2025 | filing ↗ |
| Earnings (2.02) | Sep 25, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 25, 2025 | filing ↗ |