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Buy MPC
Marathon Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be negative at -63.07. In total, the insiders bought 131.73M and sold 61.61K MPC shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.
Insider Power
|
-63.07 |
| ● Buy | 131.73M shares |
| ● Sell | 61.61K shares |
|
57% Buy Activity
Strong Negative Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Mar 02, 2026 Sell |
Lyon Shawn M SVP Log & Storage, Mplx Gp Llc |
237 Value: $48.9K |
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Mar 02, 2026 Sell |
Mannen Maryann T. Chairman, President & CEO |
2 236 Value: $461.3K |
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Mar 02, 2026 Sell |
Mannen Maryann T. Chairman, President & CEO |
952 Value: $196.4K |
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Mar 02, 2026 Sell |
Mannen Maryann T. Chairman, President & CEO |
778 Value: $160.5K |
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Mar 02, 2026 Sell |
Lyon Shawn M SVP Log & Storage, Mplx Gp Llc |
257 Value: $53.0K |
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Mar 02, 2026 Sell |
Lyon Shawn M SVP Log & Storage, Mplx Gp Llc |
279 Value: $57.6K |
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Mar 02, 2026 Sell |
Hessling Ricky D. Chief Commercial Officer |
192 Value: $39.6K |
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Mar 02, 2026 Sell |
Hessling Ricky D. Chief Commercial Officer |
282 Value: $58.2K |
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Mar 02, 2026 Sell |
Henschen Michael A Ii Ex Vp, Refining |
167 Value: $34.5K |
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Mar 02, 2026 Sell |
Henschen Michael A Ii Ex Vp, Refining |
191 Value: $39.4K |
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Mar 02, 2026 Sell |
Floerke Gregory Scott Ex Vp & COO, Mplx Gp Llc |
278 Value: $57.4K |
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Mar 02, 2026 Sell |
Floerke Gregory Scott Ex Vp & COO, Mplx Gp Llc |
278 Value: $57.4K |
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Mar 02, 2026 Sell |
Brzezinski Erin M Vp And Controller |
49 Value: $10.1K |
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Mar 02, 2026 Sell |
Benson Molly R Chief Legal Ofc & Corp Sec |
284 Value: $58.6K |
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Mar 01, 2026 Buy |
Benson Molly R Chief Legal Ofc & Corp Sec |
2 544 Value: $679.8K |
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Mar 01, 2026 Buy |
Brzezinski Erin M Vp And Controller |
509 Value: $136.0K |
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Mar 01, 2026 Buy |
Floerke Gregory Scott Ex Vp & COO, Mplx Gp Llc |
1 730 Value: $462.3K |
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Mar 01, 2026 Buy |
Hessling Ricky D. Chief Commercial Officer |
2 748 Value: $734.3K |
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Mar 01, 2026 Buy |
Lyon Shawn M SVP Log & Storage, Mplx Gp Llc |
1 730 Value: $462.3K |
||
|
Mar 01, 2026 Buy |
Mannen Maryann T. Chairman, President & CEO |
15 266 Value: $4.08M |
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Mar 01, 2026 Buy |
Khoury Maria A Exec Vp & Chief Fin Ofc |
2 443 Value: $652.8K |
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Mar 01, 2026 Buy |
Henschen Michael A Ii Ex Vp, Refining |
2 290 Value: $611.9K |
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Feb 12, 2026 Sell |
Henschen Michael A Ii Ex Vp, Refining |
511 Value: $0 |
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Feb 12, 2026 Sell |
Henschen Michael A Ii Ex Vp, Refining |
5 289 Value: $1.07M |
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Feb 01, 2026 Buy |
Khoury Maria A Exec Vp & Chief Fin Ofc |
1 574 Value: $420.6K |
About Insider Power
Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.
It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.
While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.
* October 6th, 2025 - Tested on 5562 stocks
