Grade: F — Major Red Flags
Framework: Schilit *Financial Shenanigans* + Beneish M-Score + forensic accounting principles
Data: SEC EDGAR 10-K (Filed 2026-02-26, FY ended December 31, 2025) + Yahoo Finance
Auditor: Deloitte & Touche LLP — Unqualified opinion
One-line verdict: Marathon Petroleum passes the manipulation screen with an M-Score of -2.84, and its refining cash flows remain robust at 2.0x net income. However, two structural issues trigger the F grade: goodwill and intangibles of $12.1B represent 70% of equity — overwhelmingly from MPLX — and cash of $3.7B covers only 11% of $34.4B total debt, a ratio that leaves no margin for a refining downturn. With crack spreads already compressing (gross margin fell from 12.7% in FY2022 to 7.5% in FY2025) and $4.7B in capital expenditures deployed while revenue declined 4.4%, MPC is a capital-intensive business betting on its midstream MLP to carry the balance sheet through the next cycle.
| Metric | Result |
|---|---|
| ❌ Red Flags | **2** (Goodwill/intangibles 70% of equity, cash covers 11% of debt) |
| ⚠️ Watch Items | **1** (CapEx surging 37.6% while revenue declined) |
| Checks Completed | **17/18** (1 N/A: impairment data) |
| Beneish M-Score | **-2.84** (clean; well below -2.22 threshold) |
| Auditor | Deloitte & Touche LLP — Unqualified opinion |
The Refining Machine and Its Midstream Shield
MPC operates in two segments: Refining & Marketing and Midstream (primarily MPLX LP, its master limited partnership). Per the 10-K, "crack spread is a measure of the difference between market prices for refined products and crude oil, commonly used by the industry as a proxy for the refining margin. Crack spreads can fluctuate significantly." This is the fundamental risk: MPC's profitability swings violently with crack spreads.
During FY2025, MPC's refineries processed 2,787 mbpd of crude oil and 202 mbpd of other charge and blendstocks, compared to 2,714 mbpd and 208 mbpd in FY2024 — a 2.7% throughput increase even as revenue declined 4.4%, confirming that lower commodity prices, not lower volumes, drove the revenue decline.
Key Financials
| Metric | FY2022 | FY2023 | FY2024 | FY2025 | Trend |
|---|---|---|---|---|---|
| Revenue | $177.5B | $148.4B | $138.9B | $132.7B | Declining with crack spreads |
| Net Income | $14.5B | $9.7B | $3.4B | $4.0B | Stabilizing off lows |
| Gross Margin | 12.7% | 11.1% | 6.7% | 7.5% | Compressed vs. 2022 peak |
| Net Margin | 8.2% | 6.5% | 2.5% | 3.0% | Anemic |
| ROE | 52.4% | 39.7% | 19.4% | 23.4% | Buybacks inflate denominator |
| CFFO/NI | 1.13x | 1.46x | 2.52x | 2.04x | Cash flow exceeds earnings |
Cash Flow: Still Generating, But Allocation Raises Questions
| Metric | FY2022 | FY2023 | FY2024 | FY2025 |
|---|---|---|---|---|
| Operating Cash Flow | $16.4B | $14.1B | $8.7B | $8.3B |
| CapEx | $2.4B | $1.9B | $2.5B | $3.5B |
| Free Cash Flow | $13.9B | $12.2B | $6.1B | $4.8B |
| Share Repurchases | $11.6B | $9.1B | $3.4B | — |
| Dividends | $1.3B | $1.2B | $1.1B | $1.1B |
Per the 10-K: "dividend payments totaled $1.14 billion in 2025... Dividends per share were $3.73 in 2025, $3.39 in 2024 and $3.08 in 2023." The per-share increase while total dividends declined reflects share count reduction from aggressive buybacks — $11.6B in FY2022 alone. Capital expenditures surged to $4.7B (including MPLX) in 2025 from $3.1B in 2024, driven by MPLX's Northwind Midstream Acquisition and BANGL LLC acquisition ("MPLX purchased the remaining 55 percent interest in BANGL for $703 million cash, plus an earnout provision of up to $275 million based on targeted EBITDA growth from 2026 to 2029").
The 18-Point Screening
Revenue Quality
| # | Check | Result | Detail |
|---|---|---|---|
| A1 | DSO Change | ✅ Pass | DSO 28 days, -1 day YoY — tight collections |
| A2 | AR vs Revenue Growth | ✅ Pass | AR -7.4% vs revenue -4.4% — AR shrinking faster |
| A3 | Revenue vs CFFO | ✅ Pass | Revenue -4.4%, CFFO -4.8% — cash tracks revenue |
Expense Quality
| # | Check | Result | Detail |
|---|---|---|---|
| B1 | Inventory vs COGS | ✅ Pass | Inventory +5.9% vs COGS -5.3% — normal for refiner managing feedstock |
| B2 | CapEx vs Revenue | ⚠️ Watch | CapEx surged 37.6% while revenue declined 4.4% — MPLX acquisitions |
| B3 | SG&A Ratio | ✅ Pass | SG&A/Gross Profit 33.5% — normal for scale |
| B4 | Gross Margin | ✅ Pass | Gross margin 7.5%, +0.8pp YoY — slight recovery |
Cash Flow Quality
| # | Check | Result | Detail |
|---|---|---|---|
| C1 | CFFO vs Net Income | ✅ Pass | CFFO/NI 2.04x — cash flow substantially exceeds net income |
| C2 | Free Cash Flow | ✅ Pass | FCF $4.8B, FCF/NI 1.18x — healthy |
| C3 | Accruals Ratio | ✅ Pass | Accruals ratio -5.0% — low accruals, clean |
| C4 | Cash vs Debt | ❌ Fail | Cash $3.7B covers only 11% of $34.4B debt |
The debt pile is primarily at MPLX. Per the 10-K, MPC repaid "$1.250 billion aggregate principal amount of 4.700 percent senior notes at maturity on May 1, 2025." Total consolidated debt of $34.4B (up from $28.8B in FY2024) increased due to MPLX's senior notes issuance to fund the Northwind acquisition. While MPLX's fee-based cash flows service this debt, the consolidated picture is heavily leveraged.
Balance Sheet Quality
| # | Check | Result | Detail |
|---|---|---|---|
| D1 | Goodwill + Intangibles | ❌ Fail | $12.1B (goodwill $9.4B + intangibles $2.7B) = 70% of equity |
| D2 | Leverage | ✅ Pass | Debt/EBITDA 2.9x, interest coverage 4.1x — manageable |
| D3 | Soft Asset Growth | ✅ Pass | Other assets +17.7% vs revenue -4.4% — within range |
| D4 | Asset Impairment | N/A | No write-off data available |
The goodwill concentration is MPLX-related, carried from historical acquisitions. The 10-K notes that "impairment can be based on several indicators, including a significant reduction in prices of or demand for products produced, a weakened outlook for profitability, a significant reduction in pipeline throughput volumes."
Acquisition Risk
| # | Check | Result | Detail |
|---|---|---|---|
| E1 | Serial Acquirer FCF | ✅ Pass | FCF after acquisitions positive |
| E2 | Goodwill Surge | ✅ Pass | Goodwill +20% YoY — from BANGL and Northwind |
Manipulation Score
| # | Check | Result | Detail |
|---|---|---|---|
| F1 | Beneish M-Score | ✅ Pass | M-Score -2.84 (threshold -2.22) — unlikely manipulator |
Altman Z-Score: 2.92 (safe zone) | F-Score: 0.72 (low manipulation probability 0.27%)
Key Risks from the 10-K
Summary
MPC's F grade reflects structural balance sheet risks rather than earnings manipulation. Cash flow quality is actually strong — CFFO consistently exceeds net income by 2x, accruals are negative, and the M-Score clears comfortably. The twin failures are the goodwill/intangibles burden from MPLX (70% of equity) and dangerously thin cash coverage of consolidated debt (11%). The CapEx surge is explained by MPLX's acquisitions, not reckless spending. For investors, the key question is whether MPLX's fee-based midstream earnings can reliably service $34.4B of debt through a full refining cycle — because at 7.5% gross margins, the refining segment alone cannot.