Marathon Petroleum Corporation
US ˙ NYSE ˙ US56585A1025

SecurityMPC / Marathon Petroleum Corporation
InstitutionCharter Trust Co
Latest Disclosed Ownership3,175 shares
Latest Disclosed Value $ 775,272
Charter Trust Co ownership in MPC / Marathon Petroleum Corporation

On April 17, 2026 - Charter Trust Co filed a 13F-HR form disclosing ownership of 3,175 shares of Marathon Petroleum Corporation (US:MPC) valued at $775,272 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 22, 2026 disclosing 3,175 shares of Marathon Petroleum Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $848,392 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-17 2026-03-31 13F MARATHON PETE COM 56585A102 3,175 0 0.00 775 50.19 0.0454
2026-01-22 2025-12-31 13F MARATHON PETE COM 56585A102 3,175 -117 -3.55 516 -18.61 0.0298
2025-10-15 2025-09-30 13F MARATHON PETE COM 56585A102 3,292 -25 -0.75 634 15.27 0.0381
2025-07-23 2025-06-30 13F MARATHON PETE COM 56585A102 3,317 0 0.00 551 13.87 0.0353
2025-04-16 2025-03-31 13F MARATHON PETE COM 56585A102 3,317 -1,469 -30.69 483 -27.59 0.0320
2025-01-13 2024-12-31 13F Marathon Petroleum COM 56585A102 4,786 -25 -0.52 668 -14.81 0.0437
2024-10-16 2024-09-30 13F Marathon Petroleum COM 56585A102 4,811 0 0.00 784 -6.12 0.0500
2024-07-17 2024-06-30 13F Marathon Petroleum COM 56585A102 4,811 0 0.00 835 -13.93 0.0552
2024-04-24 2024-03-31 13F Marathon Petroleum COM 56585A102 4,811 -30 -0.62 969 34.96 0.0647
2024-01-17 2023-12-31 13F Marathon Petroleum COM 56585A102 4,841 -55 -1.12 718 -2.97 0.0535
2023-11-28 2023-09-30 13F Marathon Petroleum COM 56585A102 4,896 -216 -4.23 741 24.16 0.0590
2023-08-09 2023-06-30 13F Marathon Petroleum COM 56585A102 5,112 -325 -5.98 596 -18.69 0.0457
2023-04-24 2023-03-31 13F Marathon Petroleum COM 56585A102 5,437 -92 -1.66 733 14.00 0.0584
2023-06-09 2022-12-31 13F/A-1 Marathon Petroleum COM 56585A102 5,529 0 0.00 644 17.12 0.0514
2023-01-19 2022-12-31 13F Marathon Petroleum COM 56585A102 5,529 0 1 0.0001
2022-10-24 2022-09-30 13F Marathon Petroleum COM 56585A102 5,529 -150 -2.64 549 17.56 0.0473
2022-08-12 2022-06-30 13F Marathon Petroleum COM 56585A102 5,679 -376 -6.21 467 -9.85 0.0374
2022-04-14 2022-03-31 13F Marathon Petroleum COM 56585A102 6,055 -165 -2.65 518 30.15 0.0465
2022-01-28 2021-12-31 13F Marathon Petroleum COM 56585A102 6,220 0 0.00 398 3.65 0.0338
2021-11-15 2021-09-30 13F Marathon Petroleum COM 56585A102 6,220 -50 -0.80 384 1.32 0.0359
2021-08-11 2021-06-30 13F Marathon Petroleum COM 56585A102 6,270 -1,480 -19.10 379 -8.67 0.0352
2021-05-06 2021-03-31 13F Marathon Petroleum COM 56585A102 7,750 7,750 415 0.0404
2020-05-14 2020-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 0 -8,307 -100.00 0 -100.00
2020-02-11 2019-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 8,307 -5,210 -38.54 500 -39.10 0.0547
2019-11-07 2019-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 13,517 -572 -4.06 821 4.32 0.0954
2019-08-01 2019-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 14,089 -535 -3.66 787 -10.06 0.0915
2019-05-10 2019-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 14,624 -2,537 -14.78 875 -13.62 0.1049
2019-02-13 2018-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 17,161 -365 -2.08 1,013 -27.69 0.1347
2018-11-14 2018-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 17,526 90 0.52 1,401 14.55 0.1590
2018-08-10 2018-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 17,436 807 4.85 1,223 0.58 0.1474
2018-04-06 2018-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 16,629 2,297 16.03 1,216 28.54 0.1490
2018-01-17 2017-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 14,332 -1,116 -7.22 946 9.24 0.1101
2017-10-11 2017-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 15,448 -1,926 -11.09 866 -4.73 0.1048
2017-07-10 2017-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 17,374 -2,512 -12.63 909 -9.55 0.1091
2017-04-07 2017-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 19,886 749 3.91 1,005 4.25 0.1174
2017-01-19 2016-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 19,137 -409 -2.09 964 21.56 0.1064
2016-10-14 2016-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 19,546 1,186 6.46 793 13.77 0.0898
2016-07-19 2016-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 18,360 274 1.51 697 3.72 0.0810
2016-04-08 2016-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 18,086 85 0.47 672 -27.97 0.0820
2016-01-11 2015-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 18,001 -197 -1.08 933 10.68 0.1172
2015-10-16 2015-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 18,198 2,062 12.78 843 -0.12 0.1118
2015-07-20 2015-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 16,136 8,432 109.45 844 6.97 0.1026
2015-04-07 2015-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 7,704 3,389 78.54 789 102.83 0.0956
2015-01-14 2014-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 4,315 110 2.62 389 9.27 0.0486
2014-10-21 2014-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 4,205 0 0.00 356 8.54 0.0457
2014-07-09 2014-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 4,205 0 0.00 328 -10.38 0.0411
2014-04-28 2014-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 4,205 325 8.38 366 2.81 0.0470
2014-01-15 2013-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,880 -40 -1.02 356 41.27 0.0462
2013-10-23 2013-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,920 -150 -3.69 252 -13.10 0.0353
2013-07-25 2013-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 4,070 340 9.12 290 -13.17 0.0420
2013-05-28 2013-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,730 3,730 334 0.0510
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.