Grade: F — Major Red Flags
Framework: Schilit *Financial Shenanigans* + Beneish M-Score + forensic accounting principles
Data: SEC EDGAR 10-K (Filed 2026-02-27, FY ended December 31, 2025) + Yahoo Finance
Auditor: KPMG (Dublin, Ireland, PCAOB ID 1116) — Unqualified opinion (1 critical audit matter)
One-line verdict: Smurfit WestRock is a newly combined entity — formed from the July 2024 merger of Smurfit Kappa and WestRock — reporting its first full fiscal year as a combined company. Revenue surged 47.7% to approximately $34B (reflecting the combination, not organic growth), but the balance sheet carries $13.8 billion in debt against only $892 million in cash (6% coverage), and goodwill of $7.2 billion plus intangibles of $1.1 billion represent 45% of equity. The Z-Score of 1.67 sits in the grey zone, reflecting merger-driven leverage. CFFO/NI of 4.85 is unusually high, driven by massive depreciation add-backs on the combined asset base. The M-Score of -2.58 is clean.
| Metric | Result |
|---|---|
| :x: Red Flags | **2** (Cash-to-Debt, Leverage risk) |
| :warning: Watch Items | **1** (Goodwill 45% of equity) |
| Checks Completed | **18/18** |
| Beneish M-Score | **-2.58** (clean) |
| Altman Z-Score | **1.67** (grey zone) |
| Auditor | KPMG — Unqualified opinion |
The Mega-Merger: Smurfit Kappa + WestRock
Smurfit WestRock was "incorporated and registered in Ireland on July 6, 2017" and completed the combination with WestRock on July 5, 2024. Per the filing: "one of the leaders in North America in corrugated and consumer packaging solutions and a multinational provider of sustainable fiber-based paper and packaging solutions."
The company is now "a global leader in sustainable, paper-based packaging with extensive scale, quality products and geographic reach and diversity." North America accounted for 58.5% of net sales to external customers in FY2025.
Per the filing, Smurfit WestRock is "one of the largest integrated producers of linerboard, white-top linerboard and containerboard and kraft paper in North America" and "one of the largest producers of paperboard in North America."
Year-over-year comparisons are inherently distorted: FY2024 included only six months of the combined entity (July through December), while FY2025 reflects the full year.
Profitability: Merger-Distorted Numbers
| Metric | FY2022 | FY2023 | FY2024 | FY2025 | Trend |
|---|---|---|---|---|---|
| Revenue | n/a | n/a | $23.0B* | $34.0B | +47.7% (combination) |
| Net Income | n/a | n/a | $478M* | $695M | Growing |
| Gross Margin | 24.2% | 25.3% | 19.9% | 19.4% | Compressing |
| Net Margin | n/a | n/a | 2.1%* | 2.0% | Thin |
| ROE | n/a | n/a | n/a | n/a | Distorted |
*FY2024 represents partial-year combined entity.
Gross margin of 19.4% is thin for a packaging company and has compressed from the pre-merger Smurfit Kappa standalone levels. Net margin of 2.0% is extremely thin — $695M of net income on $34B in revenue, reflecting the integration costs, amortization of acquired intangibles, and heavy interest expense.
CFFO/NI of 4.85 is distorted upward because net income is burdened by non-cash amortization charges on the massive acquired asset base, while operating cash flow adds these back.
Cash Flow: Integration Phase
| Metric | FY2023 | FY2024 | FY2025 |
|---|---|---|---|
| Operating Cash Flow | n/a | $2.2B* | $3.4B |
| Net Income | n/a | $478M* | $695M |
| CFFO / NI | 1.89 | 4.65 | 4.85 |
| CapEx | n/a | $1.5B* | $2.2B |
| Free Cash Flow | n/a | $742M* | $1.2B |
Operating cash flow of $3.4B and free cash flow of $1.2B are healthy for a company of this scale. FCF/NI of 1.72 shows the company generates far more cash than reported earnings — the gap is almost entirely depreciation and amortization of the combined asset base.
Per the filing, cash flow was used for "long-term debt" servicing, and the company's "contractual obligations primarily consist of items such as long-term debt, including current portion, lease obligations, purchase obligations and other obligations."
The 18-Point Screening
Revenue Quality
| # | Check | Result | Detail |
|---|---|---|---|
| A1 | DSO Change | :white_check_mark: | DSO 50 days, -21 days YoY |
| A2 | AR vs Revenue Growth | :white_check_mark: | AR +3.7% vs revenue +47.7% |
| A3 | Revenue vs CFFO | :white_check_mark: | Revenue +47.7%, CFFO +128.7% |
Revenue quality metrics are distorted by the combination but directionally positive. Cash flow grew faster than revenue, and receivables grew far slower than revenue — reflecting efficient working capital management of the combined entity.
Expense Quality
| # | Check | Result | Detail |
|---|---|---|---|
| B1 | Inventory vs COGS | :white_check_mark: | Inventory +4.0% vs COGS +48.6% |
| B2 | CapEx vs Revenue | :white_check_mark: | CapEx +49.5% vs revenue +47.7% |
| B3 | SG&A Ratio | :white_check_mark: | SG&A/Gross Profit = 63.2% |
| B4 | Gross Margin | :white_check_mark: | 19.4%, -0.5pp, stable |
All clean. CapEx and revenue grew at nearly identical rates, reflecting scaled-up operations. Inventory grew minimally relative to the massive COGS increase — good working capital discipline.
Cash Flow Quality
| # | Check | Result | Detail |
|---|---|---|---|
| C1 | CFFO vs Net Income | :white_check_mark: | CFFO/NI = 4.85, D&A driven |
| C2 | Free Cash Flow | :white_check_mark: | FCF $1.2B, FCF/NI = 1.72 |
| C3 | Accruals Ratio | :white_check_mark: | -6.0%, low accruals |
| C4 | Cash vs Debt | :x: | Cash $892M covers only 6% of debt $13.8B |
C4 critical failure. Total debt of $13.8B includes non-current debt of $13.4B and current portion of $346M. Cash of $892M provides minimal coverage. This debt load is the direct legacy of the WestRock combination — acquiring a company of similar scale requires enormous financing.
Balance Sheet
| # | Check | Result | Detail |
|---|---|---|---|
| D1 | Goodwill + Intangibles | :warning: | $8.3B = 45% of equity |
| D2 | Leverage | :white_check_mark: | Debt/EBITDA = 3.2x, manageable |
| D3 | Soft Asset Growth | :white_check_mark: | Normal |
| D4 | Asset Impairment | :white_check_mark: | Write-offs normal |
D1 watch. Goodwill of $7.2B and intangibles of $1.1B reflect the WestRock acquisition purchase price allocation. Total assets of $45.2B make this a very large balance sheet. Interest coverage at 2.6x is tight — closer to the 2.0x concern threshold than most companies in this batch.
Acquisition Risk
| # | Check | Result | Detail |
|---|---|---|---|
| E1 | Serial Acquirer FCF | :white_check_mark: | FCF after acquisitions positive |
| E2 | Goodwill Surge | :white_check_mark: | Normal post-combination |
Manipulation Score
| # | Check | Result | Detail |
|---|---|---|---|
| F1 | Beneish M-Score | :white_check_mark: | -2.58 (clean) |
The SGI (Sales Growth Index) at 1.477 is elevated due to the combination-driven revenue surge, but the model correctly interprets this in context. DSRI at 0.702 is actually favorable (DSO improved).
Key Risks from the 10-K
1. Integration Execution Risk
Per the filing, the company expects benefits from the "completed Combination of Smurfit Kappa and WestRock Company (including, but not limited to, synergies as well as our scale, geographic reach and product portfolio, or impact of announced closures)." Merging two packaging giants across multiple continents is complex. Any failure to capture synergies would leave the company with merger-level debt on pre-synergy earnings.
2. $13.8 Billion Debt Load
This is the largest debt burden in this screening batch. With interest coverage at only 2.6x, a recession-driven earnings decline would quickly stress debt service. The filing warns the company's "decision or ability to pay dividends in respect of our shares or conduct share repurchases is subject to a number of factors."
3. Asbestos and Environmental Liabilities
The filing references "AsbestosIssueMember" and "EnvironmentalIssueMember" as contingent liabilities — legacy WestRock exposures from historical operations. These are long-tail liabilities that could produce material charges.
4. Italian Competition Authority Investigation
The filing mentions "ItalianCompetitionAuthorityInvestigationMember" dating to 2019, with developments in 2021 and 2024. Antitrust investigations in packaging markets can result in material fines.
5. International Arbitration Against Venezuela
The filing references an "InternationalArbitrationAgainstVenezuelaMember" with a 2024 filing date. The outcome is uncertain and the recovery prospects in Venezuela are inherently risky.
Summary
Grade: F. Two failures driven by mega-merger balance sheet leverage.
Smurfit WestRock's F grade is a direct consequence of its July 2024 combination — $13.8B in debt with only $892M in cash, and interest coverage of 2.6x. The Z-Score of 1.67 reflects this structural leverage. Operationally, the combined entity is performing adequately: $1.2B in free cash flow, clean revenue quality, and an M-Score of -2.58.
The key question is whether synergies materialize. The filing promises scale benefits from combining the leading European (Smurfit Kappa) and North American (WestRock) packaging companies. If they do, Debt/EBITDA of 3.2x should decline as EBITDA grows. If they don't, the company faces a long slog of debt reduction on thin margins.
Year-over-year comparisons will normalize in FY2026 (the first full year vs. full year comparison), which will provide a clearer picture of underlying performance.
**Disclaimer**: This report is based on Smurfit WestRock's FY2025 10-K filed with SEC EDGAR on February 27, 2026. This is NOT investment advice.
Data: SEC EDGAR 10-K + Yahoo Finance
Auditor: KPMG (Dublin, Ireland; Unqualified opinion, 1 critical audit matter)
Fiscal year ended: December 31, 2025