Marathon Petroleum Corporation
US ˙ NYSE ˙ US56585A1025

SecurityMPC / Marathon Petroleum Corporation
InstitutionNeuberger Berman Group LLC
Latest Disclosed Ownership86,418 shares
Latest Disclosed Value $ 21,101,484
Neuberger Berman Group LLC reports 8.23% increase in ownership of MPC / Marathon Petroleum Corporation

On May 14, 2026 - Neuberger Berman Group LLC filed a 13F-HR form disclosing ownership of 86,418 shares of Marathon Petroleum Corporation (US:MPC) valued at $21,101,547 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 79,845 shares of Marathon Petroleum Corporation. This represents a change in shares of 8.23% during the quarter. The current value of the position is $23,091,754 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)
2026-05-14 2026-03-31 13F MARATHON PETROLEUM Common 56585A102 86,418 6,573 8.23 21,101 62.50 0.0161
2026-02-13 2025-12-31 13F MARATHON PETROLEUM Common 56585A102 79,845 8,422 11.79 12,985 -5.67 0.0097
2025-11-12 2025-09-30 13F MARATHON PETROLEUM Common 56585A102 71,423 2,983 4.36 13,766 21.09 0.0101
2025-08-25 2025-06-30 13F/A-1 MARATHON PETROLEUM Common 56585A102 68,440 4,082 6.34 11,369 21.25 0.0087
2025-08-13 2025-06-30 13F MARATHON PETROLEUM Common 56585A102 68,440 4,082 11,369 0.0045
2025-05-13 2025-03-31 13F MARATHON PETROLEUM Common 56585A102 64,358 14,556 29.23 9,376 34.96 0.0079
2025-02-13 2024-12-31 13F MARATHON PETROLEUM Common 56585A102 49,802 -68,229 -57.81 6,947 -63.87 0.0055
2024-11-14 2024-09-30 13F MARATHON PETROLEUM Common 56585A102 118,031 -5,873 -4.74 19,229 -10.54 0.0150
2024-11-14 2024-06-30 13F/A-1 MARATHON PETROLEUM Common 56585A102 123,904 -2,267 -1.80 21,495 -15.45 0.0176
2024-08-13 2024-06-30 13F MARATHON PETROLEUM Common 56585A102 123,904 -2,267 21,495 0.0176
2024-11-14 2024-03-31 13F/A-1 MARATHON PETROLEUM Common 56585A102 126,171 6,537 5.46 25,424 43.24 0.0210
2024-05-13 2024-03-31 13F MARATHON PETROLEUM Common 56585A102 126,171 6,537 25,424 0.0210
2024-11-14 2023-12-31 13F/A-2 MARATHON PETROLEUM Common 56585A102 119,634 17,014 16.58 17,749 14.28 0.0155
2024-02-09 2023-12-31 13F MARATHON PETROLEUM Common 56585A102 119,634 17,014 17,749 0.0155
2023-11-14 2023-09-30 13F MARATHON PETROLEUM Common 56585A102 102,620 29,900 41.12 15,531 83.16 0.0142
2023-08-11 2023-06-30 13F MARATHON PETROLEUM Common 56585A102 72,720 -11,072 -13.21 8,479 -24.94 0.0076
2023-05-12 2023-03-31 13F MARATHON PETROLEUM Common 56585A102 83,792 2,220 2.72 11,298 18.99 0.0105
2023-02-13 2022-12-31 13F MARATHON PETROLEUM Common 56585A102 81,572 14,485 21.59 9,494 42.10 0.0093
2022-11-15 2022-09-30 13F MARATHON PETROLEUM Common 56585A102 67,087 23,915 55.39 6,681 87.62 0.0070
2022-08-15 2022-06-30 13F MARATHON PETROLEUM Common 56585A102 43,172 -7,504 -14.81 3,561 -17.99 0.0036
2022-05-23 2022-03-31 13F/A-1 MARATHON PETROLEUM Common 56585A102 50,676 12,701 33.45 4,342 106.66 0.0037
2022-05-13 2022-03-31 13F MARATHON PETROLEUM Common 56585A102 50,676 12,701 3,794 0.0017
2022-02-11 2021-12-31 13F MARATHON PETROLEUM Common 56585A102 37,975 12,584 49.56 2,101 63.63 0.0016
2021-11-12 2021-09-30 13F MARATHON PETROLEUM Common 56585A102 25,391 6,067 31.40 1,284 29.18 0.0011
2021-08-13 2021-06-30 13F MARATHON PETROLEUM Common 56585A102 19,324 4,573 31.00 994 34.51 0.0009
2021-05-13 2021-03-31 13F MARATHON PETROLEUM Common 56585A102 14,751 1,489 11.23 739 41.30 0.0007
2021-02-10 2020-12-31 13F MARATHON PETROLEUM Common 56585A102 13,262 -13,804 -51.00 523 -32.52 0.0005
2020-11-12 2020-09-30 13F MARATHON PETROLEUM Common 56585A102 27,066 -21,682 -44.48 775 -57.21 0.0009
2020-08-13 2020-06-30 13F MARATHON PETROLEUM Common 56585A102 48,748 -77,680 -61.44 1,811 -39.35 0.0023
2020-05-14 2020-03-31 13F MARATHON PETROLEUM Common 56585A102 126,428 78,282 162.59 2,986 2.97 0.0046
2020-02-12 2019-12-31 13F MARATHON PETROLEUM Common 56585A102 48,146 -59,217 -55.16 2,900 -55.54 0.0034
2019-11-13 2019-09-30 13F MARATHON PETROLEUM Common 56585A102 107,363 -35,699 -24.95 6,522 -18.42 0.0080
2019-08-13 2019-06-30 13F MARATHON PETROLEUM Common 56585A102 143,062 -10,811 -7.03 7,995 -13.18 0.0096
2019-05-13 2019-03-31 13F MARATHON PETROLEUM Common 56585A102 153,873 -56,913 -27.00 9,209 -25.97 0.0113
2019-02-12 2018-12-31 13F MARATHON PETROLEUM Common 56585A102 210,786 127,140 152.00 12,439 85.96 0.0173
2018-11-16 2018-09-30 13F/A-1 MARATHON PETROLEUM Common 56585A102 83,646 -22,731 -21.37 6,689 -10.63 0.0076
2018-11-13 2018-09-30 13F MARATHON PETROLEUM Common 56585A102 83,646 -22,731 6,689
2018-08-13 2018-06-30 13F MARATHON PETROLEUM Common 56585A102 106,377 -523 -0.49 7,485 -4.38 0.0083
2018-05-08 2018-03-31 13F MARATHON PETROLEUM Common 56585A102 106,900 -14,165 -11.70 7,828 -2.00 0.0089
2018-02-14 2017-12-31 13F MARATHON PETROLEUM Common 56585A102 121,065 61,422 102.98 7,988 138.80 0.0092
2017-11-15 2017-09-30 13F MARATHON PETE COMMON STOCK 56585A102 59,643 -24,417 -29.05 3,345 -23.96 0.0042
2017-08-08 2017-06-30 13F MARATHON PETE COMMON STOCK 56585A102 84,060 -57,196 -40.49 4,399 -38.38 0.0056
2017-05-10 2017-03-31 13F MARATHON PETE COMMON STOCK 56585A102 141,256 20,730 17.20 7,139 17.65 0.0092
2017-02-06 2016-12-31 13F MARATHON PETE COMMON STOCK 56585A102 120,526 104,934 673.00 6,068 858.61 0.0081
2016-11-02 2016-09-30 13F MARATHON PETE COMMON STOCK 56585A102 15,592 -985 -5.94 633 0.64 0.0009
2016-08-05 2016-06-30 13F MARATHON PETE COMMON STOCK 56585A102 16,577 3,448 26.26 629 28.89 0.0009
2016-05-06 2016-03-31 13F MARATHON PETE COMMON STOCK 56585A102 13,129 1,163 9.72 488 -21.29 0.0007
2016-01-28 2015-12-31 13F MARATHON PETE COMMON STOCK 56585A102 11,966 1,868 18.50 620 32.48 0.0008
2015-11-10 2015-09-30 13F MARATHON PETE COMMON STOCK 56585A102 10,098 -2,837 -21.93 468 -30.87 0.0006
2015-07-31 2015-06-30 13F MARATHON PETE COMMON STOCK 56585A102 12,935 7,385 133.06 677 19.19 0.0008
2015-05-06 2015-03-31 13F MARATHON PETE COMMON STOCK 56585A102 5,550 5,550 0.00 568 0.0006
2015-02-05 2014-12-31 13F MARATHON PETE COMMON STOCK 56585A102 0 -7,422 -100.00 0 -100.00
2014-11-04 2014-09-30 13F MARATHON PETE COMMON STOCK 56585A102 7,422 -5,138 -40.91 628 -35.98 0.0006
2014-08-05 2014-06-30 13F MARATHON PETE COMMON STOCK 56585A102 12,560 262 2.13 981 -8.32 0.0010
2014-05-05 2014-03-31 13F MARATHON PETE COMMON STOCK 56585A102 12,298 -4,060 -24.82 1,070 -28.71 0.0011
2014-02-11 2013-12-31 13F MARATHON PETE COMMON STOCK 56585A102 16,358 242 1.50 1,501 44.74 0.0015
2013-10-29 2013-09-30 13F/A-1 MARATHON PETE COMMON STOCK 56585A102 16,116 1,261 8.49 1,037 -1.80 0.0012
2013-10-29 2013-09-30 13F MARATHON PETE COMMON STOCK 56585A102 9,737 422
2013-08-13 2013-06-30 13F MARATHON PETE COMMON STOCK 56585A102 14,855 14,855 1,056 0.0013
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.