Congress Trades in Marathon Petroleum Corporation (MPC)
14 members of Congress have disclosed trading MPC.
14 members of Congress have disclosed trading Marathon Petroleum Corporation (MPC), with 27 transactions in total — 13 purchases and 14 sales worth an estimated $296,501 at range midpoints, leaning toward selling. The most active MPC trader is Gary Palmer (6 disclosures). The most recent disclosed MPC trade was on Jul 24, 2026. Across the 2 disclosed MPC purchases we can price, the average return since disclosure is +133.0% (information only, not advice). See our full MPC fundamentals page for price, valuation and a return calculator.
Corporate insiders in MPC
It's not just Congress — here's what MPC's own executives and directors have done with the stock recently, from SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| Jun 4, 2026 | Henschen Michael A II | Ex VP, Refining | Sell | 1,372 | $368,725 |
| Jun 4, 2026 | Henschen Michael A II | Ex VP, Refining | Sell | 4,964 | $1.3M |
Every disclosed MPC trade
| Disclosed | Politician | Type | Amount | Traded | |
|---|---|---|---|---|---|
| Aug 6, 2026 | David J. Taylor R | Sale | $1,001 - $15,000 | Jul 24, 2026 | filing ↗ |
| Mar 19, 2026 | David J. Taylor R | Sale | $1,001 - $15,000 | Mar 11, 2026 | filing ↗ |
| Mar 5, 2026 | David J. Taylor R | Sale | $1,001 - $15,000 | Feb 26, 2026 | filing ↗ |
| Jul 31, 2025 | David J. Taylor R | Sale | $1,001 - $15,000 | Jul 18, 2025 | filing ↗ |
| May 15, 2025 | Rob Bresnahan | Purchase | $1,001 - $15,000 | May 15, 2025 | filing ↗ |
| May 15, 2025 | Jefferson Shreve R | Sale | $15,001 - $50,000 | May 12, 2025 | filing ↗ |
| May 6, 2025 | Julie Johnson D | Sale | $1,001 - $15,000 | Apr 1, 2025 | filing ↗ |
| Apr 8, 2025 | Rob Bresnahan | Sale | $1,001 - $15,000 | Apr 8, 2025 | filing ↗ |
| Mar 28, 2025 | Jefferson Shreve R | Purchase | $15,001 - $50,000 | Mar 5, 2025 | filing ↗ |
| Apr 27, 2020 | K. Michael Conaway R | Purchase | $15,001 | Apr 22, 2020 | filing ↗ |
| Apr 14, 2020 | Katherine M. Clark D | Sale | $1,001 - $15,000 | Mar 20, 2020 | filing ↗ |
| Apr 14, 2020 | Katherine M. Clark D | Purchase | $1,001 - $15,000 | Mar 2, 2020 | filing ↗ |
| Jan 24, 2020 | Bob Gibbs R | Sale | $1,001 - $15,000 | Jan 24, 2020 | filing ↗ |
| Jul 22, 2019 | Katherine M. Clark D | Purchase | $1,001 - $15,000 | Jun 4, 2019 | filing ↗ |
| Jun 5, 2019 | Bill Flores R | Purchase | $1,001 - $15,000 | May 8, 2019 | filing ↗ |
| Mar 1, 2019 | Susie Lee D | Sale | $1,001 - $15,000 | Feb 27, 2019 | filing ↗ |
| Oct 5, 2018 | Gary Palmer R | Sale | $1,001 - $15,000 | Oct 5, 2018 | filing ↗ |
| Oct 5, 2018 | Gary Palmer R | Sale | $1,001 - $15,000 | Oct 5, 2018 | filing ↗ |
| Sep 29, 2018 | Pete Sessions R | Purchase | $15,001 - $50,000 | Sep 28, 2018 | filing ↗ |
| Aug 6, 2018 | Gary Palmer R | Purchase | $1,001 - $15,000 | Aug 6, 2018 | filing ↗ |
| Jul 12, 2018 | Gary Palmer R | Purchase | $1,001 - $15,000 | Jul 12, 2018 | filing ↗ |
| May 31, 2018 | John Rutherford R | Sale | $1,001 - $15,000 | May 16, 2018 | filing ↗ |
| Nov 27, 2017 | Gary Palmer R | Purchase | $1,001 - $15,000 | Nov 27, 2017 | filing ↗ |
| Jul 31, 2017 | John Rutherford R | Purchase | $1,001 - $15,000 | Jul 17, 2017 | filing ↗ |
| Apr 4, 2017 | Gary Palmer R | Purchase | $1,001 - $15,000 | Apr 4, 2017 | filing ↗ |
| Mar 8, 2016 | John A. Yarmuth D | Purchase | $1,001 - $15,000 | Feb 1, 2016 | filing ↗ |
| Dec 17, 2014 | Nick J. Rahall D | Sale | $1,001 - $15,000 | Dec 17, 2014 | filing ↗ |
Most active MPC traders in Congress
Gary Palmer
Republican
6 trades
David J. Taylor
Republican
4 trades
Katherine M. Clark
Democrat
3 trades
RB
Rob Bresnahan
2 trades
Jefferson Shreve
Republican
2 trades
John Rutherford
Republican
2 trades
Julie Johnson
Democrat
1 trade
K. Michael Conaway
Republican
1 trade
Source: US House Clerk Periodic Transaction Reports. Amounts are disclosed as ranges; estimates use range midpoints. Data may be delayed or contain filer errors. Updated Aug 13, 2026. Not investment advice.