WallStreetZenWallStreetZen

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

1 of 2

MPLX insiders have sold more... subscribe to Premium to read more.
Net Insider Buy/Sell (L12M) Ownership

Be the first to know when MPLX insiders and whales buy or sell their stock.

MPLX Shareholders

What type of owners hold Mplx LP stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Marathon Petroleum Corp63.80%647,415,452$35.46BInsider
Andeavor49.74%504,701,934$27.64BInsider
Markwest Hydrocarbon Inc7.83%79,466,136$4.35BInsider
Mplx Holdings Inc7.83%79,466,136$4.35BInsider
Alps Advisors Inc2.67%27,070,962$1.48BInstitution
Invesco Ltd1.80%18,266,606$1.00BInstitution
Blackstone Inc1.51%15,350,683$840.76MInstitution
Tortoise Capital Advisors LLC1.31%13,260,584$726.28MInstitution
Goldman Sachs Group Inc 11.23%12,507,539$685.04MInstitution
Mirae Asset Global Etfs Holdings Ltd0.72%7,319,250$400.88MInstitution

1 of 3

MPLX vs Oil & Gas Midstream Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
MPLX13.18%86.82%Net SellingNet Selling
OKE76.89%0.89%Net SellingNet Selling
TRGP80.24%19.76%Net SellingNet Selling
LNG78.99%21.01%Net SellingNet Selling
ET30.44%51.83%Net BuyingNet Buying
View Top Oil & Gas Midstream Stocks

Mplx Stock Ownership FAQ

Who owns Mplx?

Mplx (NYSE: MPLX) is owned by 19.68% institutional shareholders, 129.60% Mplx insiders, and 0.00% retail investors. Marathon Petroleum Corp is the largest individual Mplx shareholder, owning 647.42M shares representing 63.80% of the company. Marathon Petroleum Corp's Mplx shares are currently valued at $35.46B.

If you're new to stock investing, here's how to buy Mplx stock.
©2026 WallStreetZen
Company
AboutNewsBlogStock Investing FAQPlansPrivacy PolicyTerms of ServiceCancellation & RefundsPerformanceHelp GuidesContactTwitterYouTubeNewsletter
Stock Tools
Top Performing AnalystsStock ScreenerStock ForecastTrending StocksStrong Buy StocksHighest Earnings StocksBest Dividend Paying StocksStatisticsStock Market SectorsStock Market IndustriesHow to Buy Stocks Online
Stock Ideas
Buy The DipBiggest Stock Gainers TodayBiggest Stock Losers Today52 Week High Stocks52 Week Low StocksMost Active Stocks TodayMost Undervalued StocksBest Penny Stocks to Buy NowBest Stocks Under $5Best Stocks Under $10
WallStreetZen does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.

Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.