Grade: F — Major Red Flags
Framework: Schilit *Financial Shenanigans* + Beneish M-Score + forensic accounting principles
Data: SEC EDGAR 10-K (Filed 2025-08-15) + Yahoo Finance
Auditor: Ernst & Young LLP — Clean opinion
One-line verdict: Coherent earns an F grade with two fails and two watch items. Cash of $909M covers only 23% of $3.9B in debt, and goodwill plus intangibles at $7.7B represent 94% of equity — a direct legacy of the 2022 II-VI/Coherent merger. Adding a Debt/EBITDA of 4.4x and CFFO/NI at 12.8x (driven by $160M in restructuring charges and two years of net losses prior), the financial profile is strained. Revenue surged 23% to $5.8B on AI datacenter demand, with networking revenues up $1.1B, and gross margin improved 4.2pp to 35.2%. The M-Score at -2.56 passes cleanly. The company is executing a turnaround from the merger, but the balance sheet remains heavily leveraged. Note: Coherent has a June 30 fiscal year-end.
| Metric | Result |
|---|---|
| Red Flags | **2** (cash covers 23% of debt, goodwill+intangibles at 94% of equity) |
| Watch Items | **2** (CFFO/NI at 12.8x, Debt/EBITDA 4.4x) |
| Checks Completed | **18/18** |
| Beneish M-Score | **-2.56** (safe zone) |
| Auditor | Ernst & Young LLP — Unqualified opinion |
Post-Merger Transformation in Photonics
Coherent Corp. was formed from the 2022 merger of II-VI Incorporated and Coherent Inc. The combined company is a global leader in engineered materials, optoelectronic components, and laser systems.
From the 10-K: The company operates in three segments: "(i) Networking, (ii) Materials, and (iii) Lasers." The Networking segment "leverages our compound semiconductor technology platforms and deep knowledge of end-user applications." The Materials segment "is a market leader in engineered materials and optoelectronic devices." The Lasers segment serves "industrial customers in both semiconductor and display capital equipment and precision manufacturing."
| Metric | FY2022 | FY2023 | FY2024 | FY2025 | Trend |
|---|---|---|---|---|---|
| Revenue | $3.3B | $5.2B | $4.7B | $5.8B | +23% |
| Net Income | $235M | ($259M) | ($156M) | $49M | Turnaround |
| Gross Margin | 38.2% | 31.4% | 30.9% | 35.2% | +4.2pp |
| Net Margin | 7.1% | -5.0% | -3.3% | 0.8% | Turning positive |
| ROE | 5.4% | -3.6% | -2.1% | 0.6% | Turning positive |
Revenue surged 23%, driven by AI datacenter demand. Net income returned to positive territory at $49M after two consecutive years of losses, though the margin is razor-thin at 0.8%.
Revenue by Segment
From the 10-K: "Networking revenues increased $1,126 million year-over-year, due to strong AI datacenter demand in our communications market and the growth in telecom. Lasers revenue increased $40 million year-over-year reflecting higher volumes of annealing lasers in our display capital equipment market partially offset by continued soft demand in precision manufacturing. Materials decreased $63 million year-over-year, primarily due to softness in the Silicon Carbide business."
Customer Concentration
From the 10-K: "We had two customers who each contributed more than 10% of total revenues in fiscal 2025." This concentration creates revenue volatility risk.
Restructuring Charges
From the 10-K: "Restructuring charges for the year ended June 30, 2025 were $160 million, or 3% of revenues. The restructuring charges consisted primarily of asset write-offs, employee termination costs, move costs, contract termination costs and accelerated depreciation due to the consolidation and closure of certain manufacturing sites as well as impairment losses associated with the sale of our Newton Aycliffe business." This compares to $27M in the prior year — a 6x increase.
Cash Flow: Positive but Strained
| Metric | FY2023 | FY2024 | FY2025 |
|---|---|---|---|
| Operating Cash Flow | $634M | $546M | $634M |
| Free Cash Flow | $198M | $199M | $193M |
| CFFO / Net Income | -2.44 | -3.49 | 12.84 |
CFFO of $634M is positive and stable, but FCF of $193M is thin after significant CapEx spending. The extreme CFFO/NI ratio of 12.84 reflects the massive gap between cash earnings (strong) and GAAP net income (depressed by restructuring and amortization).
The 18-Point Screening
Revenue Quality
| # | Check | Result | Detail |
|---|---|---|---|
| A1 | DSO | Pass | DSO 61 days, change -5 days YoY |
| A2 | AR vs Revenue | Pass | AR growth 13.6% vs revenue growth 23.4% |
| A3 | Revenue vs CFFO | Pass | Revenue +23.4%, CFFO +16.1%. Cash follows revenue |
All three revenue quality checks pass. DSO improved by 5 days, AR growth lagged revenue growth, and CFFO grew in line with revenue. No signs of revenue manipulation.
Expense Quality
| # | Check | Result | Detail |
|---|---|---|---|
| B1 | Inventory | Pass | Inventory +11.8% vs COGS +15.8%. Normal |
| B2 | CapEx | Pass | CapEx growth 27.1% vs revenue 23.4%. Normal |
| B3 | SG&A Ratio | Pass | SG&A/Gross Profit = 45.3%. Normal |
| B4 | Gross Margin | Pass | Gross margin 35.2%, +4.2pp. Improving |
The 4.2 percentage point gross margin improvement is significant, reflecting the revenue mix shift toward higher-margin AI networking products and operational efficiencies from post-merger integration. From the 10-K, SG&A "decreased as a percentage of revenue for fiscal 2025 compared to fiscal 2024...primarily the result of higher sales volumes and lower executive transition costs."
Cash Flow Quality
| # | Check | Result | Detail |
|---|---|---|---|
| C1 | CFFO vs NI | Watch | CFFO far exceeds NI (12.8x). Non-cash charges depressing profits |
| C2 | FCF | Pass | FCF $193M, FCF/NI = 3.90 |
| C3 | Accruals | Pass | Accruals ratio = -3.9%. Low |
| C4 | Cash vs Debt | Fail | Cash $909M covers only 23% of debt $3.9B |
C1: CFFO/NI at 12.8x is a watch item. The extreme ratio reflects $160M in restructuring charges, significant depreciation and amortization from acquired assets, and stock-based compensation that depress GAAP earnings but do not affect cash flow. This is a structural feature of a post-merger company working through integration, not a manipulation signal.
C4: Cash of $909M covers only 23% of $3.9B in total debt. The debt burden is a direct legacy of the II-VI/Coherent merger financing. From the 10-K balance sheet: current portion of long-term debt is $188M and long-term debt is $3.5B. With FCF of only $193M, deleveraging will be slow.
Balance Sheet
| # | Check | Result | Detail |
|---|---|---|---|
| D1 | Goodwill + Intangibles | Fail | $7.7B = 94% of equity |
| D2 | Leverage | Watch | Debt/EBITDA = 4.4x. Financial stress |
| D3 | Soft Asset Growth | Pass | Other assets 37.3% vs revenue 23.4%. Normal |
| D4 | Impairment | Pass | Write-offs normal |
D1: Goodwill of $4.5B and intangibles of $3.2B total $7.7B, representing 94% of equity. This is primarily from the II-VI/Coherent merger. The intangibles of $3.2B will amortize over time, but goodwill is subject to impairment testing. With the company barely profitable at 0.8% net margin, any revenue downturn could trigger impairment charges.
D2: Debt/EBITDA at 4.4x and interest coverage at only 2.2x signals financial stress. An interest coverage of 2.2x means Coherent's operating income barely covers interest payments twice over — leaving minimal margin for error.
M&A Risk
| # | Check | Result | Detail |
|---|---|---|---|
| E1 | Post-Acquisition FCF | Pass | FCF after acquisitions positive |
| E2 | Goodwill Surge | Pass | Goodwill+Intangibles change -4% YoY. Normal |
Goodwill+intangibles declined 4% as acquired intangibles amortize — a positive trend showing the balance sheet is gradually de-risking.
Beneish M-Score
| # | Check | Result | Detail |
|---|---|---|---|
| F1 | M-Score | Pass | -2.56 (< -2.22). Safe zone |
M-Score at -2.56 passes cleanly. The GMI (Gross Margin Index) at 0.879 reflects improving gross margin — a positive signal.
Key Risks from Item 1A
1. Customer concentration. Two customers each contributed more than 10% of revenue. A reduction from either would materially impact results.
2. AI datacenter demand cyclicality. Networking revenue surged $1.1B on AI demand, but this spending could be lumpy and cyclical. From the 10-K: "We may encounter increased competition, and we may fail to accurately estimate our competitors."
3. Post-merger integration ongoing. The $160M in restructuring charges indicates the II-VI/Coherent integration is still in progress three years post-merger. From the 10-K: Charges included "consolidation and closure of certain manufacturing sites as well as impairment losses associated with the sale of our Newton Aycliffe business."
Altman Z-Score and F-Score
| Model | Score | Interpretation |
|---|---|---|
| Altman Z-Score | **2.55** | Grey zone (1.81-2.99) |
| F-Score (Dechow) | **1.52** | Low fraud probability (0.56%) |
Z-Score at 2.55 in the grey zone reflects the elevated debt and thin profitability. F-Score probability is low at 0.56%.
Summary
| # | Check | Result |
|---|---|---|
| A1-A3 | Revenue Quality | Pass-Pass-Pass |
| B1-B4 | Expense Quality | Pass-Pass-Pass-Pass |
| C1-C4 | Cash Flow Quality | Watch-Pass-Pass-Fail |
| D1-D4 | Balance Sheet | Fail-Watch-Pass-Pass |
| E1-E2 | M&A Risk | Pass-Pass |
| F1 | Beneish M-Score | Pass |
Grade: F. Post-merger balance sheet strain with low cash coverage, elevated leverage, and interest coverage of only 2.2x.
Coherent's financial profile tells a turnaround story under financial pressure:
The F grade is driven by merger-legacy balance sheet risk, not earnings quality. The critical questions: (1) can Coherent accelerate FCF to deleverage faster, (2) will AI networking demand sustain the revenue trajectory, and (3) will restructuring charges finally normalize. Interest coverage of 2.2x leaves almost no room for a revenue downturn.
**Disclaimer**: This report is based on Coherent's FY2025 10-K (SEC EDGAR) and public financial data. This is NOT investment advice.
Data: SEC EDGAR 10-K (Filed 2025-08-15) + Yahoo Finance
Auditor: Ernst & Young LLP (Unqualified opinion)