Marathon Petroleum Corporation
US ˙ NYSE ˙ US56585A1025

SecurityMPC / Marathon Petroleum Corporation
InstitutionCommunity Bank, N.A.
Latest Disclosed Ownership624 shares
Latest Disclosed Value $ 152,367
Community Bank, N.A. ownership in MPC / Marathon Petroleum Corporation

On May 12, 2026 - Community Bank, N.A. filed a 13F-HR form disclosing ownership of 624 shares of Marathon Petroleum Corporation (US:MPC) valued at $152,368 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 624 shares of Marathon Petroleum Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $166,739 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)
2026-05-12 2026-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 624 0 0.00 152 50.50 0.0181
2026-02-04 2025-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 624 0 0.00 101 -15.83 0.0120
2025-11-14 2025-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 624 280 81.40 120 110.53 0.0145
2025-07-25 2025-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 57 14.00 0.0075
2025-04-21 2025-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 50 6.38 0.0067
2025-02-11 2024-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 48 -16.07 0.0062
2024-11-14 2024-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 56 -5.08 0.0071
2024-08-14 2024-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 60 -14.49 0.0079
2024-05-15 2024-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 69 35.29 0.0091
2024-02-02 2023-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 51 -1.92 0.0067
2023-11-14 2023-09-30 13F/A-1 MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 52 30.00 0.0073
2023-08-01 2023-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 40 -13.04 0.0053
2023-04-20 2023-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 -13 -3.64 46 12.20 0.0063
2023-01-31 2022-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 357 0 0.00 42 17.14 0.0058
2022-10-28 2022-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 357 13 3.78 35 25.00 0.0053
2022-07-26 2022-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 28 -3.45 0.0040
2022-05-05 2022-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 29 31.82 0.0036
2022-01-27 2021-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 22 4.76 0.0025
2021-10-28 2021-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 21 0.00 0.0026
2021-08-03 2021-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 21 16.67 0.0025
2021-05-04 2021-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 18 28.57 0.0022
2021-01-28 2020-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 14 40.00 0.0019
2020-11-03 2020-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 10 -23.08 0.0015
2020-07-30 2020-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 13 62.50 0.0022
2020-04-30 2020-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 8 -61.90 0.0017
2020-02-05 2019-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 21 0.00 0.0037
2019-10-24 2019-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 21 10.53 0.0040
2019-07-26 2019-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 19 -9.52 0.0037
2019-05-02 2019-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 21 5.00 0.0042
2019-01-30 2018-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 20 -28.57 0.0044
2018-11-05 2018-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 28 16.67 0.0055
2018-07-12 2018-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 24 -4.00 0.0045
2018-05-03 2018-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 25 8.70 0.0047
2018-02-06 2017-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 23 21.05 0.0025
2017-10-30 2017-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 19 5.56 0.0021
2017-08-03 2017-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 18 5.88 0.0019
2017-05-02 2017-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 0 0.00 17 0.00 0.0036
2017-01-30 2016-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 344 -200 -36.76 17 -22.73 0.0037
2016-10-13 2016-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 544 0 0.00 22 4.76 0.0050
2016-07-14 2016-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 544 0 0.00 21 5.00 0.0050
2016-04-20 2016-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 544 0 0.00 20 -28.57 0.0048
2016-02-03 2015-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 544 144 36.00 28 55.56 0.0068
2015-10-21 2015-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 400 0 0.00 18 -10.00 0.0047
2015-07-27 2015-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 400 300 300.00 20 100.00 0.0047
2015-04-27 2015-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 100 0 0.00 10 11.11 0.0023
2015-02-06 2014-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 100 100 9 0.0020
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.