MPC
Marathon Petro (MPC)
NYSE
$246.25-$1.04 (-0.42%)
Price as of Jun 23, 2026 7:58 PM EDT
  • $72.2B
    Market Cap
  • 51.33%
    1-Year Change
  • Oil & Gas Refining & Marketing
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
VANGUARD GROUP INC
13.12%
38.3M
-52,760 (-0.14%)
Dec 31, 2025
BLACKROCK INC.
9.65%
28.2M
-1.8M (-6.49%)
Jun 30, 2024
BLACKROCK FUNDING, INC. /DE
8.48%
24.8M
-613,848 (-2.48%)
Dec 31, 2024
BLACKROCK, INC.
8.36%
24.4M
+2.0M (+8.07%)
Mar 31, 2026
N/A
6.57%
19.2M
+19.2M (+100.00%)
Mar 31, 2026
STATE STREET CORP
6.52%
19.0M
+1.1M (+5.73%)
Mar 31, 2026
BLACKROCK INSTITUTIONAL TRUST COMPANY, N.A.
5.65%
16.5M
+253,905 (+1.54%)
Dec 31, 2016

Current Ownership Distribution

  • Institutions5.4B (60.87%)
  • Mutual Funds3.1B (35.03%)
  • Insiders360.4M (4.10%)
  • Other0 (0.00%)

Insider Transactions

  • 4.10% (360.4M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 3
    Number of InsiderSelling (last 12 months)
  • $6.6M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Hessling Ricky D.
Chief Commercial Officer
Sell
Mar 13, 2026
$371,020.68
1,626
$228.18
7,525
Lyon Shawn M
SVP Log & Storage, MPLX GP LLC
Gift
Mar 11, 2026
$0.00
1,186
$0.00
15,119
Brzezinski Erin M
VP and Controller
In Kind
Mar 02, 2026
$10,108.70
49
$206.30
2,247
Floerke Gregory Scott
Ex VP & COO, MPLX GP LLC
In Kind
Mar 02, 2026
$57,351.40
278
$206.30
31,560
Brzezinski Erin M
VP and Controller
In Kind
Mar 02, 2026
$8,664.60
42
$206.30
2,205
Benson Molly R
Chief Legal Ofc & Corp Sec
In Kind
Mar 02, 2026
$35,277.30
171
$206.30
30,966
Brzezinski Erin M
VP and Controller
In Kind
Mar 02, 2026
$12,171.70
59
$206.30
2,146
Floerke Gregory Scott
Ex VP & COO, MPLX GP LLC
In Kind
Mar 02, 2026
$51,781.30
251
$206.30
31,309
Lyon Shawn M
SVP Log & Storage, MPLX GP LLC
In Kind
Mar 02, 2026
$53,019.10
257
$206.30
16,821
Henschen Michael A II
Ex VP, Refining
In Kind
Mar 02, 2026
$34,452.10
167
$206.30
18,586
Lyon Shawn M
SVP Log & Storage, MPLX GP LLC
In Kind
Mar 02, 2026
$48,893.10
237
$206.30
16,584
Floerke Gregory Scott
Ex VP & COO, MPLX GP LLC
In Kind
Mar 02, 2026
$57,351.40
278
$206.30
31,031
Lyon Shawn M
SVP Log & Storage, MPLX GP LLC
In Kind
Mar 02, 2026
$57,557.70
279
$206.30
16,305
Benson Molly R
Chief Legal Ofc & Corp Sec
In Kind
Mar 02, 2026
$58,589.20
284
$206.30
30,682
Henschen Michael A II
Ex VP, Refining
In Kind
Mar 02, 2026
$25,374.90
123
$206.30
18,463
Benson Molly R
Chief Legal Ofc & Corp Sec
In Kind
Mar 02, 2026
$71,792.40
348
$206.30
30,334
Henschen Michael A II
Ex VP, Refining
In Kind
Mar 02, 2026
$39,403.30
191
$206.30
18,272
Khoury Maria A
Exec VP & Chief Fin Ofc
Award
Mar 01, 2026
$0.00
2,443
$0.00
4,017
Brzezinski Erin M
VP and Controller
Award
Mar 01, 2026
$0.00
509
$0.00
2,296
Floerke Gregory Scott
Ex VP & COO, MPLX GP LLC
Award
Mar 01, 2026
$0.00
1,730
$0.00
31,838
Lyon Shawn M
SVP Log & Storage, MPLX GP LLC
Award
Mar 01, 2026
$0.00
1,730
$0.00
17,078
Benson Molly R
Chief Legal Ofc & Corp Sec
Award
Mar 01, 2026
$0.00
2,544
$0.00
31,137
Henschen Michael A II
Ex VP, Refining
Award
Mar 01, 2026
$0.00
2,290
$0.00
18,753
Henschen Michael A II
Ex VP, Refining
Sell
Feb 12, 2026
$1.1M
5,289
$202.32
16,974
Henschen Michael A II
Ex VP, Refining
Gift
Feb 12, 2026
$0.00
511
$0.00
16,463
Khoury Maria A
Exec VP & Chief Fin Ofc
Award
Feb 01, 2026
$0.00
1,574
$0.00
1,574
Henschen Michael A II
Ex VP, Refining
In Kind
Dec 12, 2025
$29,723.20
160
$185.77
22,263
Lyon Shawn M
SVP Log & Storage, MPLX GP LLC
In Kind
Dec 12, 2025
$15,976.22
86
$185.77
15,348
Hessling Ricky D.
Chief Commercial Officer
In Kind
Dec 12, 2025
$18,205.46
98
$185.77
12,064
Benson Molly R
Chief Legal Ofc & Corp Sec
In Kind
Dec 12, 2025
$19,877.39
107
$185.77
28,593