MPLX LP

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MPLX LP
TickerMPLX
CIK #0001552000
CUSIP55336V100
SectorEnergy & Transportation - Pipe Lines (No Natural Gas)
Address200 E Hardin Street, Findlay, OH 45840
Source [EDGAR]
CIK Filing 2011 - 2026
[0001552000] 10-K
[0001552000] 10-Q
[0001552000] 3
[0001552000] 4
[0001552000] 5
[0001552000] 8-K
[0001552000] SC 13D
[0001552000] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Blackstone Group Management LLC MPLX LP [2020-07-16] 5.0
Alps Advisors Inc MPLX LP [2016-02-03] 5.67
MPLX LP Markwest Energy Partners L P [2015-11-18] 15.15
Marathon Petroleum Corp MPLX LP [2014-12-03] 77.0
FMR LLC MPLX LP [2014-02-14] 0.0
Tortoise Capital Advisors LLC MPLX LP [2014-02-11] 14.6
Tortoise Capital Advisors LLC MPLX LP [2013-04-05] 10.9
Tortoise Capital Advisors LLC MPLX LP [2013-02-12] 7.8
Marathon Petroleum Corp MPLX LP [2013-02-11] 71.6
Form 3/4/5 Filer 2011 - 2026
MPLX LP
Peiffer Garry L
Breves Christine S
Semple Frank M
Stice J Michael
Surma John P
Walker Ray N JR
Helms Christopher A
Brzezinski Erin M
Benson Molly R
Lyon Shawn M
Hagedorn Carl Kristopher
Mannen Maryann T
Floerke Gregory Scott
Khoury Maria A
Hennigan Michael J
Quaid John J
Iten Rebecca L
Gagle Suzanne
Sandman Dan D
Kaczynski Thomas
Aydt Timothy J
Beall Pamela KM
Templin Donald C
Wright Kelly D
Beatty Michael L
TTC Holdings LLC
Andeavor LLC
Western Refining Inc
MPLX Logistics Holdings LLC
Marathon Petroleum Corp
MPLX GP LLC
Giant Industries Inc
MPC Investment LLC
Tesoro Alaska Co LLC
Tesoro Refining & Marketing Co
Tesoro Logistics GP LLC
Western Refining Southwest Inc
Swearingen John S
Heminger Gary R
Goff Gregory James
Andeavor Logistics LP
Griffith Timothy T
Daberko David A
MPLX Holdings Inc
Wilson C Richard
Bromley C Corwin
Rosson Paula L
Nickerson Randy S
Buese Nancy
Markwest Hydrocarbon LLC
Pierson Craig O
Mollenkopf John C
Feldman Ian D
Wilder J Michael
Shaffner George P
Braddock Michael G
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Hagedorn Carl Kristopher
Common Units (Limited Partner Interests)
2026-03-02 Tax withheld 916 $59.22 54,246
Floerke Gregory Scott
Common Units (Limited Partner Interests)
2026-03-02 Tax withheld 995 $59.22 58,924
Mannen Maryann T
Common Units (Limited Partner Interests)
2026-03-02 Tax withheld 3,404 $59.22 201,585
Floerke Gregory Scott
Common Units (Limited Partner Interests)
2026-03-02 Tax withheld 797 $59.22 47,198
Hagedorn Carl Kristopher
Common Units (Limited Partner Interests)
2026-03-02 Tax withheld 663 $59.22 39,263
Mannen Maryann T
Common Units (Limited Partner Interests)
2026-03-02 Tax withheld 3,407 $59.22 201,763
Benson Molly R
Common Units (Limited Partner Interests)
2026-03-02 Tax withheld 998 $59.22 59,102
Benson Molly R
Common Units (Limited Partner Interests)
2026-03-02 Tax withheld 1,240 $59.22 73,433
Benson Molly R
Common Units (Limited Partner Interests)
2026-03-02 Tax withheld 614 $59.22 36,361
Floerke Gregory Scott
Common Units (Limited Partner Interests)
2026-03-02 Tax withheld 1,100 $59.22 65,142
Lyon Shawn M
Common Units (Limited Partner Interests)
2026-03-02 Tax withheld 798 $59.22 47,258
Lyon Shawn M
Common Units (Limited Partner Interests)
2026-03-02 Tax withheld 1,033 $59.22 61,174
Hagedorn Carl Kristopher
Common Units (Limited Partner Interests)
2026-03-02 Tax withheld 422 $59.22 24,991
Lyon Shawn M
Common Units (Limited Partner Interests)
2026-03-02 Tax withheld 920 $59.22 54,482
Mannen Maryann T
Common Units (Limited Partner Interests)
2026-03-02 Tax withheld 6,409 $59.22 379,541
Floerke Gregory Scott
Common Units (Limited Partner Interests)
2026-03-01 Grant 5,986 $0.00
Benson Molly R
Common Units (Limited Partner Interests)
2026-03-01 Grant 8,803 $0.00
Hagedorn Carl Kristopher
Common Units (Limited Partner Interests)
2026-03-01 Grant 4,930 $0.00
Lyon Shawn M
Common Units (Limited Partner Interests)
2026-03-01 Grant 5,986 $0.00
Mannen Maryann T
Common Units (Limited Partner Interests)
2026-03-01 Grant 52,817 $0.00
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 647 199,316,630
2025-12-31 633 176,656,917
2025-09-30 579 210,652,909
2025-06-30 578 214,161,824
2025-03-31 571 222,644,488
2024-12-31 535 220,145,835
2024-09-30 505 232,034,547
2024-06-30 492 240,266,419
2024-03-31 482 242,796,178
2023-12-31 445 228,874,183
2023-09-30 401 226,433,931
2023-06-30 374 223,231,929
Form 13F Holdings
Firm Period DFND Voting Shares
Northside Capital Management LLC [2026-06-30] SOLE 362,982 362,982
Tectonic Advisors LLC [2026-06-30] OTR 0 275,905
Walnut Private Equity Partners LLC [2026-06-30] DFND 0 268,000
Adams Asset Advisors LLC [2026-06-30] SOLE 21,645 221,452
Sequoia Financial Advisors LLC [2026-06-30] SOLE 0 203,936
Hennessy Advisors Inc [2026-06-30] SOLE 162,519 162,519
Gilman Hill Asset Management LLC [2026-06-30] SOLE 154,120 154,120
Corecap Advisors LLC [2026-06-30] SOLE 0 106,118
Wealth Enhancement Advisory Services LLC [2026-06-30] SOLE 8,404 75,744
Spirit of America Management Corp/Ny [2026-06-30] SOLE 0 64,647
Davenport & Company LLC [2026-06-30] SOLE 38,455 59,583
Fort Washington Investment Advisors Inc /OH/ [2026-06-30] SOLE 58,535 58,535
Doliver Advisors LP [2026-06-30] SOLE 0 51,748
Applied Capital LLC/FL [2026-06-30] SOLE 0 48,875
Howard Financial Services Ltd [2026-06-30] SOLE 0 48,413
Prospera Financial Services Inc [2026-06-30] SOLE 0 34,547
CWA Asset Management Group LLC [2026-06-30] SOLE 0 31,172
Fortem Financial Group LLC [2026-06-30] SOLE 0 29,190
One Charles Private Wealth Services LLC [2026-06-30] SOLE 0 27,209
Security National Bank [2026-06-30] SOLE 26,222 26,222
Brookstone Capital Management [2026-06-30] SOLE 0 25,424
Merit Financial Group LLC [2026-06-30] SOLE 0 23,491
C2C Wealth Management LLC [2026-06-30] SOLE 0 22,321
Trilogy Capital Inc [2026-06-30] SOLE 0 20,683
Attessa Capital LLC [2026-06-30] SOLE 0 18,500
IFP Advisors LLC [2026-06-30] SOLE 18,490 18,490
SL Advisors LLC [2026-06-30] SOLE 0 17,116
Segment Wealth Management LLC [2026-06-30] SOLE 0 15,447
Cary Street Partners Financial LLC [2026-06-30] DFND 9,160 15,019
Schmeidler A R & Co Inc [2026-06-30] SOLE 0 13,900
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