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Public ownership evidence

MARATHON PETROLEUM CORPORATION (MPC) Ownership Disclosures

Read MPC insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-07T14:03:26.246Z

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2026-09-022026-08-31Lyon Shawn MS1,000Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-08-31 and its public availability date is 2026-09-02. Subtracting those calendar dates gives 2 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0001193125-26-378519 ↗SEC 0001193125-26-378519 ↗SEC 0001193125-26-376764 ↗

Recent Form 4 activity

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2026-09-022026-08-31Lyon Shawn MS1,000Not reported
2026-09-022026-08-28Lyon Shawn MS425Not reported
2026-09-012026-08-27Brzezinski Erin MS570Not reported
2026-08-202026-08-17Benson Molly RS5,000Not reported
2026-08-202026-08-17Benson Molly RS5,000Not reported
2026-08-202026-08-17Benson Molly RS7,196Not reported
2026-08-182026-08-13Lyon Shawn MS2,500Not reported
2026-08-152026-08-12Henschen Michael A IIS6,011Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Cornerstone Financial Management LLC2026-06-302026-08-2975$19,175None
Cornerstone Financial Management LLC2026-03-312026-08-2942$10,256None
Cornerstone Financial Management LLC2025-12-312026-08-2934$5,529None
B. Riley Wealth Advisors, Inc.2025-03-312026-08-297,111$1,035,972None
OPTIMIZE FINANCIAL INC.2026-06-302026-08-28817$208,882None
Advisors Asset Management, Inc.2021-12-312026-08-281,977$126,508None
Advisors Asset Management, Inc.2022-12-312026-08-2816,323$1,899,834None
Advisors Asset Management, Inc.2020-06-302026-08-2853,138$1,986,298None
Advisors Asset Management, Inc.2022-06-302026-08-2811,454$942,000None
Advisors Asset Management, Inc.2021-09-302026-08-281,153$71,000None
Corient Private Wealth LP2026-06-302026-08-28114,934$29,385,023None
Corient Private Wealth LP2026-06-302026-08-2819,103$4,883,963None
Redwood Investment Management, LLC2024-12-312026-08-2828,345$3,954,000None
Redwood Investment Management, LLC2025-03-312026-08-2826,099$3,802,000None
Formuepleje A/S2020-09-302026-08-281,226,429$35,983,427None
Formuepleje A/S2020-06-302026-08-28867,273$32,418,665None
Formuepleje A/S2020-03-312026-08-281,769,282$41,790,441None
Formuepleje A/S2019-12-312026-08-28833,413$50,213,133None
Formuepleje A/S2019-09-302026-08-28704,358$42,789,749None
Formuepleje A/S2019-06-302026-08-28694,688$38,819,165None
AFFINITY WEALTH LLC2025-06-302026-08-2719$3,156None
Principia Wealth Advisory, LLC2026-06-302026-08-2716$4,091None
Principia Wealth Advisory, LLC2026-03-312026-08-2714$3,419None
Advisors Asset Management, Inc.2024-03-312026-08-2715,158$3,054,337None
Advisors Asset Management, Inc.2025-03-312026-08-2711,125$1,620,801None
Advisors Asset Management, Inc.2022-09-302026-08-2713,916$1,382,000None
Advisors Asset Management, Inc.2020-12-312026-08-2717,522$725,000None
Advisors Asset Management, Inc.2022-03-312026-08-278,593$734,702None
Advisors Asset Management, Inc.2023-06-302026-08-2718,487$2,155,584None
Advisors Asset Management, Inc.2023-09-302026-08-2718,609$2,816,286None
Advisors Asset Management, Inc.2023-03-312026-08-2717,391$2,344,829None
Advisors Asset Management, Inc.2021-03-312026-08-2711,323$605,667None
Advisors Asset Management, Inc.2021-06-302026-08-275,956$360,000None
Advisors Asset Management, Inc.2020-09-302026-08-2734,221$1,004,044None
Advisors Asset Management, Inc.2025-09-302026-08-2711,597$2,235,206None
Advisors Asset Management, Inc.2023-12-312026-08-2714,263$2,116,059None
Dakota Wealth Management2025-09-302026-08-2719,197$3,699,967None
Dakota Wealth Management2025-12-312026-08-2723,711$3,856,199None
Dakota Wealth Management2026-03-312026-08-2722,729$5,549,852None
Redwood Investment Management, LLC2025-06-302026-08-2729,151$4,842,000None
Redwood Investment Management, LLC2025-09-302026-08-2716,773$3,233,000None
Redwood Investment Management, LLC2025-12-312026-08-277,815$1,271,000None
Advus Financial Partners, LLC2026-06-302026-08-261,109$283,538None
Advus Financial Partners, LLC2026-03-312026-08-261,114$272,017None
Advus Financial Partners, LLC2025-09-302026-08-261,935$372,952None
Advus Financial Partners, LLC2025-06-302026-08-261,935$321,423None
Advus Financial Partners, LLC2025-03-312026-08-262,072$301,920None
Advus Financial Partners, LLC2024-12-312026-08-262,597$362,329None
Advus Financial Partners, LLC2024-09-302026-08-262,464$401,466None
Advus Financial Partners, LLC2024-06-302026-08-262,496$433,065None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗B. Riley Wealth Advisors, Inc. ↗OPTIMIZE FINANCIAL INC. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗

Recent Congressional disclosures

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David J. Taylor2026-10-292026-10-15sale$1,001 - $15,000
David J. Taylor2026-10-292026-10-15sale$1,001 - $15,000

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.