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NYSE: MPLX
Mplx LP Stock Ownership - Who owns Mplx?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Mplx LP insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Maryann T. MannenChairman President CEO2026-03-026,409$59.22
$379.54kSell
Molly R. BensonChief Legal Ofc Corp Sec2026-03-02614$59.22
$36.36kSell
Molly R. BensonChief Legal Ofc Corp Sec2026-03-021,240$59.22
$73.43kSell
Molly R. BensonChief Legal Ofc Corp Sec2026-03-02998$59.22
$59.10kSell
Shawn M. LyonSenior VP Log. Storage2026-03-021,033$59.22
$61.17kSell
Shawn M. LyonSenior VP Log. Storage2026-03-02798$59.22
$47.26kSell
Maryann T. MannenChairman President CEO2026-03-023,407$59.22
$201.76kSell
Maryann T. MannenChairman President CEO2026-03-023,404$59.22
$201.58kSell
Gregory Scott FloerkeExec. VP and COO2026-03-02995$59.22
$58.92kSell
Gregory Scott FloerkeExec. VP and COO2026-03-021,100$59.22
$65.14kSell

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Net Insider Buy/Sell (L12M) Ownership

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MPLX Shareholders

What type of owners hold Mplx LP stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Marathon Petroleum Corp63.77%647,415,452$36.95BInsider
Andeavor49.71%504,701,934$28.80BInsider
Markwest Hydrocarbon Inc7.83%79,466,136$4.54BInsider
Mplx Holdings Inc7.83%79,466,136$4.54BInsider
Invesco Ltd1.79%18,187,878$1.04BInstitution
Blackstone Inc1.55%15,705,485$896.31MInstitution
Tortoise Capital Advisors LLC1.31%13,319,918$760.17MInstitution
Goldman Sachs Group Inc 11.23%12,466,987$711.49MInstitution
Goldman Sachs Group Inc1.23%12,461,655$711.19MInstitution
Bank Of America Corp0.84%8,531,066$486.87MInstitution

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MPLX vs Oil & Gas Midstream Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
MPLX11.97%88.03%Net SellingNet Selling
OKE76.05%0.89%Net SellingNet Selling
LNG80.13%19.87%Net SellingNet Selling
TRGP80.90%19.10%Net SellingNet Selling
TRP71.11%0.00%
View Top Oil & Gas Midstream Stocks

Mplx Stock Ownership FAQ

Who owns Mplx?

Mplx (NYSE: MPLX) is owned by 17.61% institutional shareholders, 129.54% Mplx insiders, and 0.00% retail investors. Marathon Petroleum Corp is the largest individual Mplx shareholder, owning 647.42M shares representing 63.77% of the company. Marathon Petroleum Corp's Mplx shares are currently valued at $36.95B.

If you're new to stock investing, here's how to buy Mplx stock.
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