Who
Mark F. ONeil
Director
Company insider
Files Form 4 as: Director, CarMax; Chairman and CEO, Dealertrack Technologies.
In numbers
- Trades disclosed
- 495
- Buys
- 4
- Sells
- 74
- Bought
- $1.8M
- Sold
- $39.3M
- Companies
- 2
- Companies where not an officer
- 1
- First trade
- 3 Jan 2006
- Last trade
- 26 Jun 2026
- Last filed
- 29 Jun 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 26 Jun 2026filed 29 Jun 2026 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Code A | —3,696 at $0.00 | filing |
| 26 Jun 2026filed 29 Jun 2026 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Code A | —3,696 at $0.00 | filing |
| 24 Jun 2026filed 26 Jun 2026 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Bought | $251K4,800 at $52.36 | filing |
| 24 Jun 2026filed 26 Jun 2026 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Bought | $251K4,800 at $52.36 | filing |
| 24 Jun 2026filed 26 Jun 2026 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Bought | $251K4,800 at $52.36 | filing |
| 24 Jun 2026filed 26 Jun 2026 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Bought | $251K4,800 at $52.36 | filing |
| 2 Oct 2025filed 6 Oct 2025 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Bought | $500K10,816 at $46.21 | filing |
| 30 Jun 2025filed 2 Jul 2025 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Code A | —2,753 at $0.00 | filing |
| 1 Jul 2024filed 2 Jul 2024 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Code A | —2,598 at $0.00 | filing |
| 30 Jun 2023filed 5 Jul 2023 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Code A | —2,210 at $0.00 | filing |
| 1 Jul 2022filed 5 Jul 2022 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Code A | —1,996 at $0.00 | filing |
| 2 Jul 2021filed 7 Jul 2021 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Code A | —1,308 at $0.00 | filing |
| 2 Dec 2020filed 13 Apr 2021 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Code G | —2,700 at $0.00 | filing |
| 16 Oct 2020filed 14 Apr 2026 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Bought | $18K191 at $93.17 | filing |
| 30 Sep 2020filed 2 Oct 2020 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Bought | $252K2,700 at $93.40 | filing |
| 26 Jun 2020filed 30 Jun 2020 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Code A | —2,021 at $0.00 | filing |
| 26 Dec 2019filed 27 Dec 2019 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Code A | —988 at $0.00 | filing |
| 9 Oct 2019filed 20 Mar 2020 | KMX CarMaxAuto Parts & Dealers | SEC FORM 4 Code G | —6,515 at $0.00 | filing |
| 18 Jun 2015filed 22 Jun 2015 | Dealertrack Technologies | SEC FORM 4 Sold | $3.1M50,000 at $62.95 | filing |
| 26 May 2015filed 1 Jun 2015 | Dealertrack Technologies | SEC FORM 4 Code M | $4.4M105,000 at $41.80 | filing |
News
CarMax upgraded to 'buy' by Bank of America as pricing gains drive market shareKMX · proactiveinvestors.com · 15 Oct 2026
0 headlines in the last 90 days name Mark F. ONeil; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.