Marathon Petroleum Corporation
US ˙ NYSE ˙ US56585A1025

SecurityMPC / Marathon Petroleum Corporation
InstitutionTompkins Financial Corp
Latest Disclosed Ownership1,624 shares
Latest Disclosed Value $ 396,548
Tompkins Financial Corp ownership in MPC / Marathon Petroleum Corporation

On April 9, 2026 - Tompkins Financial Corp filed a 13F-HR form disclosing ownership of 1,624 shares of Marathon Petroleum Corporation (US:MPC) valued at $396,548 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 8, 2026 disclosing 1,624 shares of Marathon Petroleum Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $433,949 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)
2026-04-09 2026-03-31 13F MARATHON PETE COM 56585A102 1,624 0 0.00 397 50.00 0.0279
2026-01-08 2025-12-31 13F MARATHON PETE COM 56585A102 1,624 0 0.00 264 -15.65 0.0205
2025-10-08 2025-09-30 13F MARATHON PETE COM 56585A102 1,624 -51 -3.04 313 12.59 0.0262
2025-07-10 2025-06-30 13F MARATHON PETE COM 56585A102 1,675 0 0.00 278 13.93 0.0256
2025-04-07 2025-03-31 13F MARATHON PETE COM 56585A102 1,675 0 0.00 244 4.72 0.0234
2025-01-15 2024-12-31 13F Marathon Petroleum COM 56585A102 1,675 0 0.00 234 -14.34 0.0217
2024-11-01 2024-09-30 13F Marathon Petroleum COM 56585A102 1,675 0 0.00 273 -6.21 0.0262
2024-07-17 2024-06-30 13F Marathon Petroleum COM 56585A102 1,675 0 0.00 291 -13.95 0.0304
2024-04-08 2024-03-31 13F Marathon Petroleum COM 56585A102 1,675 0 0.00 338 35.89 0.0382
2024-01-08 2023-12-31 13F Marathon Petroleum COM 56585A102 1,675 0 0.00 249 -1.98 0.0301
2023-11-21 2023-09-30 13F Marathon Petroleum COM 56585A102 1,675 0 0.00 253 29.74 0.0399
2023-07-12 2023-06-30 13F Marathon Petroleum COM 56585A102 1,675 0 0.00 195 -13.33 0.0306
2023-04-20 2023-03-31 13F Marathon Petroleum COM 56585A102 1,675 0 0.00 226 0.0368
2023-01-06 2022-12-31 13F Marathon Petroleum COM 56585A102 1,675 0 0.00 0 -100.00 0.0308
2022-10-13 2022-09-30 13F Marathon Petroleum COM 56585A102 1,675 0 0.00 166 20.29 0.0280
2022-07-14 2022-06-30 13F Marathon Petroleum COM 56585A102 1,675 0 0.00 138 -3.50 0.0222
2022-05-12 2022-03-31 13F Marathon Petroleum COM 56585A102 1,675 1,624 3,184.31 143 4,666.67 0.0202
2022-01-24 2021-12-31 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 51 0 0.00 3 0.00 0.0005
2021-10-22 2021-09-30 13F MARATHON PETE EQUITIES/EXCHANGE TRADED FUNDS 56585A102 51 0 0.00 3 0.00 0.0005
2021-06-09 2021-03-31 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 51 0 0.00 3 50.00 0.0005
2021-02-12 2020-12-31 13F/A-1 MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 51 0 0.00 2 100.00 0.0004
2021-02-05 2020-12-31 13F MARATHON PETE CORP COM US LARGE-CAP EQUITIES 56585A102 18,693 18,642 442 18,605.7319
2020-10-23 2020-09-30 13F MARATHON PETE EQUITIES/EXCHANGE TRADED FUNDS 56585A102 51 -292 -85.13 1 -92.31 0.0002
2020-07-29 2020-06-30 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 343 0 0.00 13 62.50 0.0027
2020-04-22 2020-03-31 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 343 0 0.00 8 -61.90 0.0018
2020-01-22 2019-12-31 13F/A-1 MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 343 0 0.00 21 0.00 0.0038
2020-01-15 2019-12-31 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 343 0 21 3,189.5504
2019-10-17 2019-09-30 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 343 -160 -31.81 21 -25.00 0.0043
2019-07-17 2019-06-30 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 503 0 0.00 28 -6.67 0.0056
2019-04-30 2019-03-31 13F/A-1 MARATHON PETE EQUITIES/EXCHANGE TRADED FUNDS 56585A102 503 -65 -11.44 30 -11.76 0.0057
2019-04-17 2019-03-31 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 652 84 52
2019-01-22 2018-12-31 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 568 -84 -12.88 34 -34.62 0.0075
2018-10-18 2018-09-30 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 652 0 0.00 52 13.04 0.0107
2018-07-18 2018-06-30 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 652 0 0.00 46 -4.17 0.0099
2018-04-26 2018-03-31 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 652 0 0.00 48 11.63 0.0108
2018-01-24 2017-12-31 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 652 -48 -6.86 43 10.26 0.0099
2017-10-17 2017-09-30 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 700 0 0.00 39 5.41 0.0092
2017-07-11 2017-06-30 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 700 0 0.00 37 5.71 0.0093
2017-04-17 2017-03-31 13F/A-1 MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 700 0 0.00 35 0.00 0.0089
2017-04-17 2017-03-31 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 3,595 134
2017-01-10 2016-12-31 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 700 0 0.00 35 25.00 0.0092
2016-10-13 2016-09-30 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 700 -2,105 -75.04 28 -73.58 0.0080
2016-07-13 2016-06-30 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 2,805 -790 -21.97 106 -20.90 0.0314
2016-04-20 2016-03-31 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 3,595 -2,232 -38.30 134 -55.63 0.0423
2016-01-19 2015-12-31 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 5,827 1,114 23.64 302 38.53 0.0962
2015-10-16 2015-09-30 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 4,713 -896 -15.97 218 -25.60 0.0705
2015-07-14 2015-06-30 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 5,609 715 14.61 293 -41.52 0.0796
2015-04-21 2015-03-31 13F/A-1 MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 4,894 -938 -16.08 501 -4.75 0.1255
2015-04-14 2015-03-31 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 4,894 501
2015-01-15 2014-12-31 13F/A-1 MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 5,832 -5,017 -46.24 526 -42.76 0.1312
2015-01-13 2014-12-31 13F MARATHON PETE EQUITIES/EXCHANGE TRADED FUNDS 56585A102 10,325 735
2014-10-10 2014-09-30 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 10,849 127 1.18 919 9.80 0.2407
2014-07-11 2014-06-30 13F MARATHON PETE EQUITIES/EXCHANGE TRADED FUNDS 56585A102 10,722 171 1.62 837 -8.82 0.2069
2014-04-10 2014-03-31 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 10,551 -141 -1.32 918 -6.42 0.2323
2014-01-08 2013-12-31 13F MARATHON PETE CORP COM EQUITIES/EXCHANGE TRADED FUNDS 56585A102 10,692 111 1.05 981 44.26 0.2541
2013-10-11 2013-09-30 13F MARATHON PETE EQUITIES/EXCHANGE TRADED FUNDS 56585A102 10,581 256 2.48 680 -7.23 0.1901
2013-07-19 2013-06-30 13F MARATHON PETE EQUITIES/EXCHANGE TRADED FUNDS 56585A102 10,325 10,325 733 0.2217
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.