401(k) · DOL Form 5500 · 2022
Marathon Petroleum Company LP 401(k) Plan
Data updated 2026-08-25
- $6.4B
- Total assets Very large vs avg
- 17,666
- Participants Very large workforce
- 100th
- Percentile by assets National rank
- $360,663
- Avg per participant High balance/head
Official DOL plan name: Marathon Petroleum Thrift Plan · Sponsored by Marathon Petroleum Company LP · Ohio · Manufacturing
$6.4B in assets, 17,666 participants
Marathon Petroleum Company LP's Marathon Petroleum Thrift Plan reported $6.4B in total assets and 17,666 participants in its 2022 DOL Form 5500 filing, ranking in the 100th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.
- #20,524 in Manufacturing (20,602 peers)
Coverage in Ohio
Marathon Petroleum Thrift Plan covers 17,666 participants in Ohio, 23x the typical Ohio plan (state average ~765 per filing). Assets: $6.4B.
- #20,524
- in Manufacturing (20,602 peers)
- -11.0%
- assets change YoY
- 64×
- vs typical plan assets (national mean)
The plan reported a net loss of $791M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.
Marathon Petroleum Thrift Plan's outsized position by total assets
Marathon Petroleum Thrift Plan vs every filed plan by assets
End-of-year total assets · plan year 2022 · DOL Form 5500
$6,371,480,588 Highest reported value at or above every one of 139,123 filed plans
Dashed line + filled bar = this entry, among filed plans.
Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2022
Marathon Petroleum Thrift Plan's mega-plan peer group by participant headcount
Plan-year 2022 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Marathon Petroleum Thrift Plan is a mega filing (17,666 participants), the rightmost band on the breakdown.
DOL schedule card
Filing strip 311537655 · Marathon Petroleum Company LP PY 2022 · 401(k)
Marathon Petroleum Thrift Plan · $6.4B · 17,666 · 100th
- 5500 $6.4B
- ASSETS 17,666
- PCT 100th
- EIN 401(k)
- RANK near Sap America, Inc. 401(k) Plan
- PHOTO ind #20524
Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Manufacturing retirement plans → · Plans in Ohio →
Marathon Petroleum Thrift Plan in the asset neighbourhood
Ohio filing particulars
| Total Assets (Beginning of Year) | $7.2B |
|---|---|
| Net Assets (End of Year) | $6.4B |
| Net Income | -$791M |
| Employer EIN | 311537655 |
| Plan Effective Date | 2011-07-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Marathon Petroleum Company LP)
Sponsor-wide plan assets over time
All Marathon Petroleum Company LP plans reported in each filing year
- Latest sponsor-wide plan assets
- $10.7B 25.710409990260658% vs 2022
- 2024 filing year
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 3 | 35,136 | $8.5B |
| 2023 | 3 | 35,428 | $9.7B |
| 2024 | 3 | 36,178 | $10.7B |
Nearby 401(k) Plans in Ohio
Peer 401(k) plans, same state, same plan type, ranked by total assets.
- The Sherwin-Williams Company 401(k) Plan $8.3B · 44,890
- The Progressive 401(k) Plan $7.6B · 50,299
- The Kroger Co. 401(k) Retirement Savings Account Plan $7.3B · 116,133
- Nationwide Savings Plan $6.7B · 24,278
- Eaton Savings Plan $6.1B · 21,882
Scale composition for Marathon Petroleum Thrift Plan
Marathon Petroleum Thrift Plan reports $6.4B in end-of-year assets across 17,666 participants (0.052% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.019% of 93,925,755 covered participants) - about $360,663 per participant (2.6x the national average assets-per-participant) . Net income for plan year 2022 was -$791M.
This plan identity (EIN 311537655, plan #010) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $6.4B to $8.3B (+30.7%) while covered participants moved from 17,666 to 18,199 . Single-year sparse filers cannot show that trail.
| Plan year | Participants | EOY assets | Filing |
|---|---|---|---|
| 2022 | 17,666 | $6.4B | This page |
| 2023 | 17,818 | $7.5B | Open filing |
| 2024 · index core | 18,199 | $8.3B | Open filing |
The same sponsor also keeps 3 other index-core plans on PlainRetire:
- Marathon Petroleum Thrift Plan (401(k), $8.3B, 18,199 participants)
- Marathon Petroleum Retirement Plan (Defined Benefit (Pension), $2.2B, 17,916 participants)
- Speedway Retirement Plan (Defined Benefit (Pension), $124M, 63 participants)
Marathon Petroleum Thrift Plan's out-of-state 401(k) peers by assets and headcount
Outside Ohio, the nearest 401(k) by assets is Sap America, Inc. 401(k) Plan in PA ($6.4B); by covered participants it is Southern Glazer's 401(k) Plan in FL (17,622 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($6.4B here).
- Sap America, Inc. 401(k) Plan (PA) $6.4B · 18,910
- General Dynamics Corporation 401(k) Plan 4.0 (VA) $6.4B · 25,696
- Insperity 401(k) Plan (TX) $6.4B · 148,363
- Broadcom U.S. 401(k) Plan (CA) $6.3B · 10,258
Similar participant headcount
Nearest other-state filings by covered participants (17,666 participants); asset peers above are excluded.
- Southern Glazer's 401(k) Plan (FL) 17,622 · 44 off
- The Hartford Investment and Savings Plan (CT) 17,724 · 58 off
- Pruitthealth, Inc. Employees 401(k) Plan and Hero Fund (GA) 17,581 · 85 off
- The Prudential Employee Savings Plan (NJ) 17,761 · 95 off
DOL Form 5500 plan year 2022. Asset totals can differ widely at the same headcount; neither axis is a quality rating.