Rsm Us Wealth Management Llc reports 8.40% increase in ownership of MPC / Marathon Petroleum Corporation

Marathon Petroleum Corporation

MX ˙ BMV ˙ US56585A1025

Security	MX:MPC / Marathon Petroleum Corporation
Institution	Rsm Us Wealth Management Llc
Latest Disclosed Ownership	14,833 shares
Latest Disclosed Value	$ 3,621,864

On May 12, 2026 - Rsm Us Wealth Management Llc filed a 13F-HR form disclosing ownership of 14,833 shares of Marathon Petroleum Corporation (MX:MPC) valued at $3,621,864 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 13,683 shares of Marathon Petroleum Corporation. This represents a change in shares of 8.40% during the quarter.

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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-12	2026-03-31	13F	MARATHON PETE	COM	56585A102	14,833	1,150	8.40	3,622	61.58	0.0445
2026-01-23	2025-12-31	13F	MARATHON PETE	COM	56585A102	13,683	-899	-6.17	2,242	-20.25	0.0286
2025-11-12	2025-09-30	13F	MARATHON PETE	COM	56585A102	14,582	157	1.09	2,811	17.28	0.0366
2025-08-13	2025-06-30	13F	MARATHON PETE	COM	56585A102	14,425	-808	-5.30	2,396	7.98	0.0334
2025-05-06	2025-03-31	13F	MARATHON PETE	COM	56585A102	15,233	22	0.14	2,219	6.79	0.0344
2025-01-27	2024-12-31	13F	MARATHON PETE	COM	56585A102	15,211	-5,704	-27.27	2,079	-40.08	0.0299
2024-11-07	2024-09-30	13F	MARATHON PETE	COM	56585A102	20,915	1,413	7.25	3,468	1.82	0.0509
2024-08-07	2024-06-30	13F	MARATHON PETE	COM	56585A102	19,502	14,666	303.27	3,407	249.69	0.0572
2024-05-02	2024-03-31	13F	MARATHON PETE	COM	56585A102	4,836	-297	-5.79	974	27.99	0.0250
2024-02-05	2023-12-31	13F	MARATHON PETE	COM	56585A102	5,133	3,079	149.90	762	145.48	0.0206
2023-11-08	2023-09-30	13F	MARATHON PETE	COM	56585A102	2,054	285	16.11	311	50.49	0.0110
2023-08-04	2023-06-30	13F	MARATHON PETE	COM	56585A102	1,769	-11,905	-87.06	206	-88.82	0.0070
2023-05-15	2023-03-31	13F	MARATHON PETE	COM	56585A102	13,674	1,440	11.77	1,844	29.52	0.0651
2023-02-13	2022-12-31	13F	MARATHON PETE	COM	56585A102	12,234	136	1.12	1,424	18.39	0.0705
2022-10-21	2022-09-30	13F	MARATHON PETE	COM	56585A102	12,098	66	0.55	1,202	21.54	0.0693
2022-08-11	2022-06-30	13F	MARATHON PETE	COM	56585A102	12,032	-243	-1.98	989	-5.72	0.0554
2022-05-02	2022-03-31	13F	MARATHON PETE	COM	56585A102	12,275	250	2.08	1,049	36.41	0.0531
2022-02-08	2021-12-31	13F	MARATHON PETE	COM	56585A102	12,025	-650	-5.13	769	-1.79	0.0376
2021-11-08	2021-09-30	13F	MARATHON PETE	COM	56585A102	12,675	641	5.33	783	7.70	0.0419
2021-08-13	2021-06-30	13F	MARATHON PETE	COM	56585A102	12,034	0	0.00	727	12.89	0.0393
2021-04-29	2021-03-31	13F	MARATHON PETE	COM	56585A102	12,034	0	0.00	644	29.32	0.0411
2021-02-04	2020-12-31	13F	MARATHON PETE	COM	56585A102	12,034	-503	-4.01	498	35.33	0.0353
2020-11-03	2020-09-30	13F	MARATHON PETE	COM	56585A102	12,537	0	0.00	368	-21.54	0.0308
2020-08-14	2020-06-30	13F	MARATHON PETE	COM	56585A102	12,537	-736	-5.55	469	49.84	0.0454
2020-05-15	2020-03-31	13F	MARATHON PETE	COM	56585A102	13,273	-308	-2.27	313	-61.74	0.0385
2020-06-04	2019-12-31	13F	MARATHON PETE	COM	56585A102	13,581	-23	-0.17	818	-0.97	0.0812
2020-06-04	2019-09-30	13F	MARATHON PETE	COM	56585A102	13,604	-774	-5.38	826	2.86	0.0954
2020-06-04	2019-06-30	13F	MARATHON PETE	COM	56585A102	14,378	286	2.03	803	-4.74	0.0937
2020-06-04	2019-03-31	13F	MARATHON PETE	COM	56585A102	14,092	77	0.55	843	1.93	0.1032
2020-06-04	2018-12-31	13F	MARATHON PETE	COM	56585A102	14,015	-46	-0.33	827	-26.42	0.1183
2020-06-04	2018-09-30	13F	MARATHON PETE	COM	56585A102	14,061	-5,376	-27.66	1,124	-17.60	0.1471
2020-06-04	2018-06-30	13F	MARATHON PETE	COM	56585A102	19,437	219	1.14	1,364	-2.92	0.1828
2020-06-04	2018-03-31	13F	MARATHON PETE	COM	56585A102	19,218	42	0.22	1,405	11.07	0.1676
2020-06-04	2017-12-31	13F	MARATHON PETE	COM	56585A102	19,176	1,401	7.88	1,265	26.88	0.1530
2020-06-04	2017-09-30	13F	MARATHON PETE	COM	56585A102	17,775	574	3.34	997	10.78	0.1308
2020-06-04	2017-06-30	13F	MARATHON PETE	COM	56585A102	17,201	1,109	6.89	900	10.70	0.1268
2020-06-04	2017-03-31	13F	MARATHON PETE	COM	56585A102	16,092	-40	-0.25	813	0.12	0.1181
2020-06-04	2016-12-31	13F	MARATHON PETE	COM	56585A102	16,132	3,200	24.74	812	54.67	0.1290
2020-06-04	2016-09-30	13F	MARATHON PETE	COM	56585A102	12,932	0	0.00	525	6.92	0.0916
2020-06-04	2016-06-30	13F	MARATHON PETE	COM	56585A102	12,932	-22	-0.17	491	1.87	0.0944
2020-06-04	2016-03-31	13F	MARATHON PETE	COM	56585A102	12,954	419	3.34	482	-25.85	0.0973
2020-06-04	2015-12-31	13F	MARATHON PETE	COM	56585A102	12,535	120	0.97	650	13.04	0.1532
2020-06-04	2015-09-30	13F	MARATHON PETE	COM	56585A102	12,415	121	0.98	575	-10.58	0.1507
2020-06-04	2015-06-30	13F	MARATHON PETE	COM	56585A102	12,294	6,147	100.00	643	2.23	0.1605
2020-06-04	2015-03-31	13F	MARATHON PETE	COM	56585A102	6,147	21	0.34	629	13.74	0.1604
2020-06-04	2014-12-31	13F	MARATHON PETE	COM	56585A102	6,126	0	0.00	553	6.55	0.1484
2020-06-04	2014-09-30	13F	MARATHON PETE	COM	56585A102	6,126	0	0.00	519	8.58	0.1519
2020-06-04	2014-06-30	13F	MARATHON PETE	COM	56585A102	6,126	0	0.00	478	-10.32	0.1351
2020-06-04	2014-03-31	13F	MARATHON PETE	COM	56585A102	6,126	6,126		533		0.1565

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.