401(k) · DOL Form 5500 · 2024
Marathon Petroleum Company LP 401(k) Plan
Data updated 2026-08-25
- $8.3B
- Total assets Very large vs avg
- 18,199
- Participants Very large workforce
- 100th
- Percentile by assets National rank
- $457,450
- Avg per participant High balance/head
Official DOL plan name: Marathon Petroleum Thrift Plan · Sponsored by Marathon Petroleum Company LP · Ohio · Manufacturing
$8.3B in assets, 18,199 participants
Marathon Petroleum Company LP's Marathon Petroleum Thrift Plan reported $8.3B in total assets and 18,199 participants in its 2024 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.
- #17,703 in Manufacturing (17,777 peers)
Coverage in Ohio
Marathon Petroleum Thrift Plan covers 18,199 participants in Ohio, 24x the typical Ohio plan (state average ~765 per filing). Assets: $8.3B.
- #17,703
- in Manufacturing (17,777 peers)
- +10.8%
- assets growth YoY
- 84×
- vs typical plan assets (national mean)
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 2024 · DOL Form 5500
$8,325,133,144 Highest reported value at or above every one of 123,620 filed plans
Dashed line + filled bar = this entry, among filed plans.
Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2024
Marathon Petroleum Thrift Plan's mega-plan peer group by participant headcount
Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Marathon Petroleum Thrift Plan is a mega filing (18,199 participants), the rightmost band on the breakdown.
What changed between DOL Form 5500 filings
plan year 2023 → plan year 2024
- Marathon Petroleum Thrift Plan reported net income fell from $1.1B in the plan year 2023 filing to $811M in the plan year 2024 filing.
- Marathon Petroleum Thrift Plan end-of-year assets rose from $7.5B in the plan year 2023 filing to $8.3B in the plan year 2024 filing.
- Marathon Petroleum Thrift Plan reported participants rose from 17,818 in the plan year 2023 filing to 18,199 in the plan year 2024 filing.
EBSA filing schedule strip
Filing strip 311537655 · Marathon Petroleum Company LP PY 2024 · 401(k)
Marathon Petroleum Thrift Plan · $8.3B · 18,199 · 100th
- IND $8.3B
- EOY 18,199
- 5500 100th
- ASSETS 401(k)
- PCT near Metlife 401(k) Plan
- EIN ind #17703
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) | $7.5B |
|---|---|
| Net Assets (End of Year) | $8.3B |
| Net Income | $811M |
| 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.
- GE Aerospace Retirement Savings Plan $14.7B · 45,620
- The Kroger Co. 401(k) Retirement Savings Account Plan $11.8B · 135,373
- The Progressive 401(k) Plan $11.5B · 62,521
- The Sherwin-Williams Company 401(k) Plan $10.6B · 47,459
- Parker Retirement Savings Plan $9.0B · 26,315
Scale composition for Marathon Petroleum Thrift Plan
Marathon Petroleum Thrift Plan reports $8.3B in end-of-year assets across 18,199 participants (0.068% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.019% of 93,925,755 covered participants) - about $457,450 per participant (3.3x the national average assets-per-participant) . Net income for plan year 2024 was $811M.
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 | Open filing |
| 2023 | 17,818 | $7.5B | Open filing |
| 2024 · index core | 18,199 | $8.3B | This page |
The same sponsor also keeps 2 other index-core plans on PlainRetire:
- 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 Metlife 401(k) Plan in NJ ($8.3B); by covered participants it is Warner Bros. Discovery 401(k) Savings Plan in NY (18,233 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($8.3B here).
- Metlife 401(k) Plan (NJ) $8.3B · 14,717
- Ford Motor Co. Tax-Efficient Savings Plan for Hourly Employees (MI) $8.3B · 60,497
- Bp Employee Savings Plan (TX) $8.3B · 9,303
- GE Vernova Retirement Savings Plan (NY) $8.2B · N/A
Similar participant headcount
Nearest other-state filings by covered participants (18,199 participants); asset peers above are excluded.
- Warner Bros. Discovery 401(k) Savings Plan (NY) 18,233 · 34 off
- Amn Healthcare 401(k) Retirement Savings Plan (TX) 18,267 · 68 off
- Nextep 401(k) Retirement Savings Plan (OK) 18,274 · 75 off
- Ufcw Local 152 Savings Plan (NJ) 18,121 · 78 off
DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.