Mplx Lp (MPLX)
NYSE: MPLX · Pipe Lines (No Natural Gas) · Findlay, OH · filing with the SEC since 2012
Who owns Mplx Lp
As filed with the SECHolders of 5% or more
0
No Schedule 13D or 13G naming this company is on file.
Directors and officers
17
report now, of 44 people on the record since 2012. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 0 named at left.
Holders of 5% or moreshare of the class, as filed
No holder of 5% or more is on file in a Schedule 13D or 13G naming this company.
What MPLX reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Illinois Extension Pipeline Company LLC
An investee · investee · invested in, named in the 10-K filed Feb 26, 2026
Loop LLC
An investee · investee · invested in, named in the 10-K filed Feb 26, 2026
MarEn Bakken Company LLC
An investee · investee · invested in, named in the 10-K filed Feb 26, 2026
MarkWest EMG Jefferson Dry Gas Gathering Company, L.L.C.
An investee · investee · invested in, named in the 10-K filed Feb 26, 2026
MarkWest Utica EMG
An investee · investee · invested in, named in the 10-K filed Feb 26, 2026
MXP Parent, LLC
An investee · investee · invested in, named in the 10-K filed Feb 26, 2026
Ohio Gathering Company L.L.C.
An investee · investee · invested in, named in the 10-K filed Feb 26, 2026
Sherwood Midstream LLC
An investee · investee · invested in, named in the 10-K filed Feb 26, 2026
74 subsidiaries in 1 country, from the list filed with the 10-K filed Feb 26, 2026.
Insider tradesForm 4
1sales
0purchases
0sales on a scheduled plan
1people selling
$200,000sold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Nov 12, 2025 to Nov 12, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 12, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window1 of 52 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Hagedorn Carl Kristopher | Exec VP & Chief Fin Ofc | 1 | $200,000 | 0 | 0 | $0 |