Frank M. Semple serves as Executive at MARKWEST HYDROCARBON INC, where they oversee executive responsibilities. Since joining the company, Frank M. Semple has executed 166 insider transactions totaling $7.5M, demonstrating a bearish approach to their equity position. Their most recent transaction on Feb 17, 2026 involved receiving (via award) 1,071.82 shares valued at $0.
Frank M. Semple currently holds 58,172.33 shares of MARKWEST HYDROCARBON INC (MWP), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Frank M. Semple has been a net seller of MWP stock. They have purchased $203.9K and sold $7.3M worth of shares.
Frank M. Semple's most recent insider trade was on Feb 17, 2026, when they sold 1,071.82 shares at $0.00 per share.
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| $N/A |
| Discretionary |
| Aug 15, 2025 | MPLX | $0 | Award | 1,050.57 | $N/A | Discretionary |
| Aug 16, 2024 | MPLX | $0 | Award | 932.74 | $N/A | Discretionary |
| Jul 1, 2024 | MPLX | $0 | Award | 830.81 | $N/A | Discretionary |
| Jul 1, 2024 | MPC | $0 | Award | 225.27 | $N/A | Discretionary |
| May 13, 2024 | MPLX | $0 | Award | 923.7 | $N/A | Discretionary |
| Apr 1, 2024 | MPC | $0 | Award | 192.63 | $N/A | Discretionary |
| Apr 1, 2024 | MPLX | $0 | Award | 862.17 | $N/A | Discretionary |
| Feb 14, 2024 | MPLX | $0 | Award | 956.53 | $N/A | Discretionary |
| Jan 2, 2024 | MPC | $0 | Award | 258.43 | $N/A | Discretionary |
| Jan 2, 2024 | MPLX | $0 | Award | 971.5 | $N/A | Discretionary |
| Nov 13, 2023 | MPLX | $0 | Award | 987.15 | $N/A | Discretionary |
| Oct 2, 2023 | MPC | $0 | Award | 262.47 | $N/A | Discretionary |
| Oct 2, 2023 | MPLX | $0 | Award | 1,014.09 | $N/A | Discretionary |
| Aug 14, 2023 | MPLX | $0 | Award | 867.82 | $N/A | Discretionary |
| Jul 3, 2023 | MPC | $0 | Award | 334.99 | $N/A | Discretionary |
| Jul 3, 2023 | MPLX | $0 | Award | 937.23 | $N/A | Discretionary |
| May 15, 2023 | MPLX | $0 | Award | 852.76 | $N/A | Discretionary |
| Apr 3, 2023 | MPLX | $0 | Award | 916.48 | $N/A | Discretionary |
| Apr 3, 2023 | MPC | $0 | Award | 290.29 | $N/A | Discretionary |
| Feb 14, 2023 | MPLX | $0 | Award | 796.47 | $N/A | Discretionary |
| Jan 3, 2023 | MPC | $0 | Award | 354.99 | $N/A | Discretionary |
| Jan 3, 2023 | MPLX | $0 | Award | 978.36 | $N/A | Discretionary |
| Nov 22, 2022 | MPLX | $0 | Award | 772.9 | $N/A | Discretionary |
| Oct 3, 2022 | MPC | $0 | Award | 383.06 | $N/A | Discretionary |
| Oct 3, 2022 | MPLX | $0 | Award | 1,049.9 | $N/A | Discretionary |
| Aug 12, 2022 | MPLX | $0 | Award | 698.05 | $N/A | Discretionary |
| Jul 1, 2022 | MPC | $0 | Award | 466.09 | $N/A | Discretionary |
| Jul 1, 2022 | MPLX | $0 | Award | 1,074.68 | $N/A | Discretionary |