Mark F. Oneil serves as Executive at DealerTrack Holdings, Inc., where they oversee executive responsibilities. Since joining the company, Mark F. Oneil has executed 424 insider transactions totaling $40.1M, demonstrating a bearish approach to their equity position. Their most recent transaction on Oct 2, 2025 involved purchasing 10,816 shares valued at $499.8K.
Mark F. Oneil currently holds 24,690 shares of DealerTrack Holdings, Inc. (TRAK), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Mark F. Oneil has been a net seller of TRAK stock. They have purchased $752.0K and sold $39.3M worth of shares.
Mark F. Oneil's most recent insider trade was on Oct 2, 2025, when they purchased 10,816 shares at $46.21 per share.
Get notified when new Form 4 filings are submitted
| $N/A |
| Discretionary |
| Jun 30, 2023 | KMX | $0 | Award | 2,210 | $N/A | Discretionary |
| Jul 1, 2022 | KMX | $0 | Award | 1,996 | $N/A | Discretionary |
| Jul 2, 2021 | KMX | $0 | Award | 1,308 | $N/A | Discretionary |
| Dec 2, 2020 | KMX | $0 | Gift | 2,700 | $N/A | Discretionary |
| Sep 30, 2020 | KMX | $252.2K | Purchase | 2,700 | $93.40 | Discretionary |
| Jun 26, 2020 | KMX | $0 | Award | 2,021 | $N/A | Discretionary |
| Dec 26, 2019 | KMX | $0 | Award | 988 | $N/A | Discretionary |
| Oct 9, 2019 | KMX | $0 | Gift | 6,515 | $N/A | Discretionary |
| Jun 18, 2015 | TRAK | $3.1M | Sale | 50,000 | $62.95 | Discretionary |
| May 26, 2015 | TRAK | $4.4M | Option Exercise | 105,000 | $41.80 | Discretionary |
| May 26, 2015 | TRAK | $2.6M | Payment | 62,888 | $41.80 | Discretionary |
| Apr 17, 2015 | TRAK | $753.4K | Option Exercise | 20,000 | $37.67 | Discretionary |
| Feb 25, 2015 | TRAK | $0 | Award | 21,599 | $N/A | Discretionary |
| Feb 24, 2015 | TRAK | $0 | Award | 7,351 | $N/A | Discretionary |
| Jan 31, 2015 | TRAK | $0 | Option Exercise | 26,439 | $N/A | Discretionary |
| Dec 8, 2014 | TRAK | $815.9K | Sale | 17,500 | $46.62 | Discretionary |
| Dec 8, 2014 | TRAK | $428.8K | Option Exercise | 17,500 | $24.50 | Discretionary |
| Dec 2, 2014 | TRAK | $688.8K | Sale | 14,492 | $47.53 | Discretionary |
| Dec 2, 2014 | TRAK | $355.1K | Option Exercise | 14,492 | $24.50 | Discretionary |
| Nov 28, 2014 | TRAK | $494.9K | Option Exercise | 20,198 | $24.50 | Discretionary |
| Nov 28, 2014 | TRAK | $960.4K | Sale | 20,198 | $47.55 | Discretionary |
| Nov 26, 2014 | TRAK | $414.6K | Option Exercise | 16,921 | $24.50 | Discretionary |
| Nov 26, 2014 | TRAK | $805.1K | Sale | 16,921 | $47.58 | Discretionary |
| Nov 18, 2014 | TRAK | $480.6K | Sale | 10,646 | $45.14 | Discretionary |
| Nov 18, 2014 | TRAK | $260.8K | Option Exercise | 10,646 | $24.50 | Discretionary |
| Nov 17, 2014 | TRAK | $266.0K | Sale | 5,854 | $45.44 | Discretionary |
| Nov 17, 2014 | TRAK | $143.4K | Option Exercise | 5,854 | $24.50 | Discretionary |
| Nov 3, 2014 | TRAK | $4.9K | Option Exercise | 200 | $24.50 | Discretionary |