Grade: F — Major Red Flags
Framework: Schilit *Financial Shenanigans* + Beneish M-Score + forensic accounting principles
Data: SEC EDGAR 10-K (Filed 2025-08-19) + Yahoo Finance
Auditor: Deloitte & Touche LLP — Clean opinion (auditor since 2016)
One-line verdict: Lumentum barely returned to profitability with $25.9M in net income on $1.6B in revenue (+21%), but five red flags fire simultaneously: leverage at 24.4x Debt/EBITDA with interest coverage of -8.7x, cash of $877M covering only 34% of $2.6B in debt (mostly convertible notes), goodwill at 134% of equity from the Cloud Light acquisition, negative free cash flow for three consecutive years, and AR outpacing revenue for two years. The company is in the early stages of an AI-driven recovery after a brutal fiscal 2024 loss of $546.5M, but the balance sheet remains severely stressed.
| Metric | Result |
|---|---|
| Red Flags | **5** |
| Watch Items | **4** |
| Checks Completed | **17/18** (1 N/A) |
| Beneish M-Score | **-2.50** (safe -- below -2.22 threshold) |
| F-Score (Fraud Probability) | **1.07** (0.39% probability) |
| Altman Z-Score | **1.54** (grey zone) |
| Auditor | Deloitte & Touche LLP -- Unqualified opinion |
| Fiscal Year | 2025 (ended June 28, 2025) |
| Report Date | 2026-04-05 |
The AI Photonics Recovery Story
Lumentum operates in two segments: Cloud & Networking (optical components for AI/cloud) and Industrial Tech (3D sensing, industrial lasers). Per the filing: "Net revenue increased by $285.8 million, or 21.0%, during fiscal year 2025 as compared to fiscal year 2024, due to a $325.9 million increase in Cloud & Networking net revenue offset by a $40.1 million decrease in Industrial Tech net revenue."
The Cloud & Networking increase was "primarily due to higher unit sales from cloud and AI/ML customers, which increased by $193.2 million, in part due to a full year of revenue from Cloud Light." Revenue from network equipment manufacturers also increased $132.7M "as a result of higher unit sales from the market recovery."
Revenue is recovering but remains below FY2023's $1.77B. The filing warns this is a market with "high customer concentrations" that is "highly competitive" and "price sensitive."
Profitability: From $546M Loss to Barely Profitable
| Metric | FY2022 | FY2023 | FY2024 | FY2025 | Trend |
|---|---|---|---|---|---|
| Revenue | $1.7B | $1.8B | $1.4B | $1.6B | +21% YoY |
| Gross Profit | $789M | $569M | $252M | $460M | +83% |
| Gross Margin | 46.0% | 32.2% | 18.5% | 28.0% | Recovering |
| Net Income | $199M | -$132M | -$547M | $26M | Turnaround |
| Net Margin | 11.6% | -7.4% | -40.2% | 1.6% | Barely positive |
Per the filing: "Gross margin in fiscal year 2025 increased to 28.0% from 18.5% in fiscal year 2024. The increase was driven by a $20.8 million reduction in excess and obsolete inventory charges during fiscal year 2025, primarily as a result of the U.S. trade restrictions imposed during fiscal year 2024 whereby we were no longer able to sell certain products to one of our customers."
The gross margin improvement is partly attributable to lower charges for products that Lumentum can no longer sell due to U.S. export restrictions (likely related to Huawei). Additionally, "costs incurred related to the acquisition of Cloud Light, including integration costs and amortization of inventory fair value adjustments were $23.5 million lower."
Cash Flow: Negative FCF for Three Straight Years
| Metric | FY2023 | FY2024 | FY2025 |
|---|---|---|---|
| Operating Cash Flow | $180M | $25M | $126M |
| Net Income | -$132M | -$547M | $26M |
| **CFFO / Net Income** | **-1.37** | **-0.05** | **4.88** |
| CapEx | -$129M | -$137M | -$231M |
| Free Cash Flow | $51M | -$112M | -$105M |
CFFO of $126.3M was "the net income of $25.9 million and non-cash items of $414.9 million, partially offset by $314.5 million of changes in our operating assets and liabilities." The massive non-cash items include $177.2M stock-based compensation, $152.4M intangible amortization, and $104.3M depreciation.
CapEx surged to $231M -- a 68.6% increase -- while the company was generating negative FCF. The filing explains "an increase in inventories of $71.3 million primarily due to inventory builds to support market demand." The company is investing heavily in capacity for expected AI demand while still bleeding cash.
The $2.6B Debt Load
Lumentum's debt is predominantly convertible notes. The 2029 Notes have an aggregate principal balance of $603.7M "maturing in 2029." The filing states: "If the closing price of our stock exceeds $90.40 (130% of the conversion price of $69.54) for 20 of the last 30 trading days of any future quarter, the 2029 Notes would become convertible at the option of the holders."
Additionally, the company has SMBC and Mizuho term loans totaling approximately $67M. Total debt of $2.6B against cash of $877M means cash covers only 34% of debt. Debt/EBITDA at 24.4x and interest coverage at -8.7x are extreme -- these trigger our D2 leverage fail.
Inventory and Working Capital
Per the filing: "Raw materials $253.2M (up from $196.9M), Work in process $159.1M (up from $101.6M), Finished goods $57.8M (down from $99.9M)." Raw materials and WIP are building for anticipated demand while finished goods are depleting -- a pattern consistent with genuine production ramp rather than channel stuffing.
The allowance for credit losses jumped from $0.2M to $3.5M, a 17.5x increase, indicating growing customer payment risk.
The 18-Point Screening
| # | Check | Result | Detail |
|---|---|---|---|
| A1 | DSO Change | PASS | DSO 55 days, +3 days YoY |
| A2 | AR vs Revenue Growth | **FAIL** | **AR outpaced revenue for 2 consecutive years** |
| A3 | Revenue vs CFFO | PASS | Revenue +21.0%, CFFO +411.3% |
| B1 | Inventory vs COGS | PASS | Inventory +18.0% vs COGS +7.0% |
| B2 | CapEx vs Revenue | WATCH | CapEx +68.6% is >2x revenue growth |
| B3 | SG&A Ratio | WATCH | SG&A/Gross Profit = 75.7%, exceeds 70% |
| B4 | Gross Margin | WATCH | Gross margin swung +9.5pp (18.5% to 28.0%) |
| C1 | CFFO vs Net Income | PASS | CFFO/NI = 4.88 |
| C2 | Free Cash Flow | WATCH | FCF is negative (-$105M) |
| C3 | Accruals Ratio | PASS | -2.4%. Low accruals |
| C4 | Cash vs Debt | **FAIL** | **Cash $877M covers only 34% of $2.6B debt** |
| D1 | Goodwill + Intangibles | **FAIL** | **$1.5B = 134% of equity** |
| D2 | Leverage | **FAIL** | **Debt/EBITDA = 24.4x, Interest coverage = -8.7x** |
| D3 | Soft Asset Growth | PASS | Other assets -13.6% vs revenue +21.0% |
| D4 | Asset Impairment | N/A | No write-off data |
| E1 | Serial Acquirer FCF | **FAIL** | **FCF after acquisitions negative for 3 years** |
| E2 | Goodwill Surge | PASS | Goodwill+Intangibles -9% YoY (amortization) |
| F1 | Beneish M-Score | PASS | M-Score = -2.50 |
Key Risks from the 10-K
1. U.S. Export Restrictions
Lumentum explicitly lost a major customer to trade restrictions. The excess and obsolete inventory charges in FY2024 were "primarily as a result of the U.S. trade restrictions imposed during fiscal year 2024 whereby we were no longer able to sell certain products to one of our customers." This is a structural revenue loss.
2. Convertible Debt Dilution
The $603.7M in 2029 Notes convert at $69.54 per share. If triggered, this would dilute existing shareholders substantially. The conversion feature creates a complex interplay between stock price and capital structure.
3. Three Years of Negative FCF
Negative FCF in FY2023 ($51M was briefly positive, then -$112M in FY2024 and -$105M in FY2025) while simultaneously ramping CapEx to $231M suggests the company is betting heavily on AI-driven demand that has not yet materialized in sufficient scale.
4. Cloud Light Integration
The Cloud Light acquisition for $728.5M added $365.8M of goodwill. The filing notes IPR&D write-offs of $2.7M "for projects we will no longer pursue, which includes $2.0 million from the NeoPhotonics acquisition and $0.6 million from the Cloud Light acquisition." Additionally, the company "discontinued our in-house development of coherent DSPs and RFICs" with a $29.1M write-off.
Key Financial Trends (4-Year)
| Metric | FY2022 | FY2023 | FY2024 | FY2025 |
|---|---|---|---|---|
| Revenue | $1.7B | $1.8B | $1.4B | $1.6B |
| Net Income | $199M | -$132M | -$547M | $26M |
| Gross Margin | 46.0% | 32.2% | 18.5% | 28.0% |
| Net Margin | 11.6% | -7.4% | -40.2% | 1.6% |
| CFFO | $459M | $180M | $25M | $126M |
| FCF | $368M | $51M | -$112M | -$105M |
| Cash | $2.5B | $2.0B | $887M | $877M |
| Total Debt | $1.9B | $2.9B | $2.6B | $2.6B |
Summary
Grade: F. Five red flags fire across leverage, debt coverage, goodwill, serial negative FCF, and AR quality.
Lumentum is a company in transition -- from the wreckage of a $547M loss in FY2024 to barely break-even profitability of $26M in FY2025. The AI-driven recovery in Cloud & Networking is real ($193M in additional revenue from cloud and AI/ML customers), but the balance sheet carries the scars of the NeoPhotonics and Cloud Light acquisitions, convertible debt, and U.S. trade restrictions that permanently destroyed a customer relationship.
The M-Score of -2.50 is safely in the clean zone -- there are no manipulation signals. The problems are structural: too much debt, too little cash flow, too much goodwill relative to equity. If the AI photonics demand continues to accelerate, Lumentum could grow into its balance sheet. If demand stalls, the leverage becomes existential.
What to watch: (1) whether FCF turns positive as revenue scales, (2) the 2029 convertible note conversion risk, (3) CapEx efficiency -- $231M in spending must generate returns, and (4) further write-offs of acquired intangible assets.
**Disclaimer**: This report is based on Lumentum's fiscal year 2025 10-K filed with the SEC on August 19, 2025. This is NOT investment advice.
**About EarningsGrade**: We screen earnings reports for financial red flags using an 18-point forensic framework. Grade F means major red flags were detected that warrant thorough investigation.