Persistent free cash flow deficits, including a -28.4% FCF margin in 2026Q3, highlight a structural challenge in converting revenue into cash during the current industry downturn.
| Metric | TTM | May'25 | May'24 | May'23 | May'22 | May'21 | May'20 | May'19 | May'18 | May'17 | May'16 | May'15 | May'14 | May'13 | May'12 | May'11 | May'10 | May'09 | May'08 | May'07 | May'06 | May'05 | May'04 | May'03 | May'02 | May'01 | May'00 | May'99 | May'98 | May'97 |
|---|
| Cash from Operations | -6.82M | -7.4M | 1.76M | 10.01M | 1.51M | -2.7M | -2.02M | -5.64M | -1.35M | -4.5M | -6.28M | -2.26M | -607K | -310K | -4.88M | -4.14M | 3.25M | -11.04M | 3.62M | -1.11M | 1.5M | -2.54M | -800K | -3.81M | -226K | 1.01M | -5.96M | 342K | -664K | 3M |
| Operating CF Margin % | - | -12.55% | 2.65% | 15.41% | 2.97% | -16.27% | -9.08% | -26.77% | -4.57% | -23.79% | -43.31% | -22.52% | -3.08% | -1.88% | -31.41% | -30.15% | 27.81% | -51.55% | 9.28% | -4.05% | 6.31% | -15.81% | -5.06% | -25.28% | -1.8% | 3.26% | -24.31% | 1.88% | -1.63% | 7.14% |
| Operating CF Growth % | -401.28% | -521.41% | -82.46% | 563.86% | 155.83% | -33.45% | 64.09% | -317.25% | 69.94% | 28.43% | -178.41% | -271.66% | -95.81% | 93.64% | -17.7% | -227.56% | 129.42% | -404.53% | 426.78% | -173.88% | 159.02% | -217.88% | 79.03% | -1588.05% | -122.35% | 116.97% | -1841.52% | 151.51% | -122.13% | - |
| Net Income | -11.42M | -3.91M | 33.16M | 14.56M | 9.45M | -2.03M | -2.8M | -5.24M | 528K | -5.65M | -6.79M | -6.65M | 422K | -3.42M | -3.39M | -3.37M | -481K | -29.97M | 10.57M | 2.43M | 810K | -4.87M | -3.96M | -4.54M | -5.27M | -141K | -2.6M | -2.33M | 2.4M | 3.3M |
| Depreciation & Amortization | 3.67M | 3.39M | 1.36M | 450K | 307K | 310K | 384K | 431K | 417K | 271K | 203K | 135K | 141K | 322K | 491K | 573K | 690K | 644K | 474K | 323K | 340K | 323K | 384K | 582K | 662K | 651K | 703K | 453K | 479K | 600K |
| Stock-Based Compensation | 6.32M | 5.16M | 2.52M | 0 | 3.01M | 0 | 910K | 905K | 996K | 999K | 1.02M | 997K | 829K | 601K | 709K | 0 | 1.73M | 1.27M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Deferred Taxes | -2.9M | -421K | -20.77M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.94M | -4.94M | 0 | 0 | 0 | 0 | 0 | 1.61M | 0 | 0 | -456K | -102K | -1M |
| Other Non-Cash Items | 1.1M | 584K | -130K | 2.28M | -1.7M | -1.3M | 45K | -3K | -58K | 201K | 166K | 1K | -26K | 0 | -973K | 963K | 360K | 13.94M | 990K | 758K | 74K | 226K | 160K | 380K | 15K | 1.64M | 33K | -140K | 142K | 100K |
| Working Capital Changes | -3.6M | -12.2M | -14.38M | -7.28M | -9.56M | 316K | -561K | -1.74M | -3.23M | -313K | -881K | 3.26M | -1.97M | 2.19M | -1.71M | -2.31M | 945K | -1.86M | -3.47M | -4.62M | 277K | 1.78M | 2.62M | -233K | 2.75M | -1.14M | -4.09M | 2.81M | -3.59M | 5M |
| Change in Receivables | 312K | -3.04M | 6.79M | -3.79M | -7.83M | -1.37M | 1.16M | -2.04M | 1.26M | -3.51M | 887K | 1.77M | -720K | -206K | -1.28M | -501K | 267K | -3.61M | -4.45M | -2.09M | -2.02M | 1.72M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Change in Inventory | -27K | -2.44M | -13.73M | -9.47M | -6.67M | -972K | 1.16M | -112K | -2.07M | 430K | 70K | -1.01M | -740K | 702K | -1.11M | -1.32M | 837K | 5.72M | -492K | -2.45M | -37K | 849K | 1.28M | -64K | 1.5M | 1.09M | -1.89M | 2.74M | -1.63M | -2.9M |
| Change in Payables | -4.33M | -714K | -3.89M | 5.04M | 1.36M | 1.88M | -1.02M | 210K | -1.09M | 1.69M | 564K | -850K | 707K | 243K | 570K | -353K | -446K | -1.99M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Cash from Investing | -6.55M | -16.07M | 17.25M | -18.66M | -416K | -227K | -163K | -173K | -572K | -477K | -919K | -118K | -289K | -127K | 1.33M | -15K | -69K | -1.11M | 1.93M | -2.49M | 2.48M | 3.26M | -3.91M | 4.62M | -2.96M | 1.04M | 8.55M | -1.41M | -16.75M | -200K |
| Capital Expenditures | -4.75M | -4.99M | -749K | -1.36M | -416K | -227K | -163K | -173K | -572K | -477K | -919K | -118K | -339K | -127K | -45K | -15K | -69K | -1.11M | -1.06M | -1.1M | -149K | -296K | -159K | -261K | -954K | -122K | -1.36M | -755K | -315K | -600K |
| CapEx % of Revenue | 10.5% | 8.47% | 1.13% | 2.1% | 0.82% | 1.37% | 0.73% | 0.82% | 1.94% | 2.52% | 6.34% | 1.18% | 1.72% | 0.77% | 0.29% | 0.11% | 0.59% | 5.2% | 2.7% | 4.03% | 0.63% | 1.84% | 1.01% | 1.73% | 7.59% | 0.39% | 5.54% | 4.16% | 0.77% | 1.43% |
| Acquisitions | -1.8M | -11.07M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 50K | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Investments | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Other Investing | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -5K | -4K | -5K | 416K | -87K | -19K | -787K | -274K | 9K | -213K | 400K |
| Cash from Financing | 19.7M | 625K | 139K | 7.32M | 25.76M | 1.96M | 2.17M | -5.55M | 925K | 21.84M | 2.51M | 6.41M | 391K | 1.06M | 1.58M | 343K | 176K | 503K | 2.34M | 766K | 514K | 247K | 960K | -23K | 338K | 301K | 356K | -356K | 22.86M | -2.1M |
| Debt Issued (Net) | 0 | 0 | 0 | 0 | -1.4M | 1.4M | 1.68M | -6.11M | 0 | 0 | 1.99M | 2.98M | -324K | -307K | 1.41M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -419K | -170K | 306K | -4.55M | -2.13M |
| Equity Issued (Net) | 18.63M | 625K | 139K | 7.32M | 27.16M | 560K | 493K | 559K | 925K | 21.84M | 512K | 3.43M | 715K | 1.37M | 168K | 343K | 176K | 503K | 2.34M | 766K | 514K | 247K | 960K | -23K | 254K | 804K | 526K | -662K | 27.41M | -9K |
| Dividends Paid | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Share Repurchases | -1.54M | -784K | -1.6M | -2.06M | -429K | -20K | -10K | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -182K | -141K | -468K | -136K | -1.15M | -1K | -9K |
| Other Financing | 1.07M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 84K | -84K | 0 | 0 | 0 | 0 |
| Net Change in Cash | 8.7M | -23.93M | 19.11M | -1.43M | 26.9M | -851K | 5K | -11.42M | -955K | 16.86M | -4.59M | 3.72M | -515K | 251K | -1.95M | -3.75M | 3.41M | -11.29M | 9.08M | -2.84M | 9.4M | 4.95M | -3.72M | 877K | -2.91M | 2.07M | 2.99M | -1.41M | 5.57M | -2.1M |
| Free Cash Flow | -11.57M | -12.39M | 1.01M | 8.65M | 1.09M | -2.93M | -2.19M | -5.81M | -1.92M | -4.97M | -7.2M | -2.37M | -946K | -437K | -4.92M | -4.16M | 3.18M | -12.15M | 2.57M | -2.21M | 1.35M | -2.84M | -959K | -4.08M | -1.18M | 889K | -7.31M | -413K | -979K | 2.4M |
| FCF Margin % | -25.57% | -21.01% | 1.52% | 13.31% | 2.15% | -17.64% | -9.81% | -27.59% | -6.51% | -26.31% | -49.65% | -23.7% | -4.81% | -2.65% | -31.7% | -30.26% | 27.22% | -56.75% | 6.58% | -8.09% | 5.68% | -17.66% | -6.07% | -27.01% | -9.39% | 2.86% | -29.84% | -2.28% | -2.4% | 5.71% |
| FCF Growth % | -89.91% | -1330.59% | -88.36% | 692.03% | 137.3% | -33.88% | 62.36% | -202.13% | 61.32% | 30.94% | -203.29% | -150.95% | -116.48% | 91.12% | -18.35% | -230.81% | 126.16% | -573.09% | 216.09% | -263.61% | 147.62% | -196.04% | 76.47% | -245.42% | -232.73% | 112.16% | -1670.7% | 57.81% | -140.79% | - |
| FCF per Share | -0.38 | -0.42 | 0.03 | 0.30 | 0.04 | -0.12 | -0.10 | -0.26 | -0.08 | -0.31 | -0.55 | -0.20 | -0.08 | -0.05 | -0.55 | -0.47 | 0.37 | -1.44 | 0.30 | -0.27 | 0.18 | -0.38 | -0.13 | -0.57 | -0.17 | 0.12 | -1.07 | -0.06 | -0.14 | 0.53 |
| FCF Conversion (FCF/Net Income) | 1.01x | 1.89x | 0.05x | 0.69x | 0.16x | 1.33x | 0.72x | 1.08x | -2.56x | 0.80x | 0.93x | 0.34x | -1.44x | 0.09x | 1.44x | 1.23x | -6.75x | 0.37x | 0.34x | -0.46x | 1.85x | 0.52x | 0.20x | 0.84x | 0.04x | -7.17x | 2.29x | -0.15x | -0.28x | 0.91x |
| Interest Paid | 0 | 0 | 0 | 15K | 12K | 6K | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Taxes Paid | 0 | 100K | 90K | 21K | 4K | 15K | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Customer concentration and EV cyclicality
According to reported financial data, the relationship between net income and operating cash flow remains highly volatile, with OCF/NI ratios frequently exceeding 1.0 or turning negative, suggesting that accrual-based accounting significantly obscures the underlying cash-generating capacity of the business during this period of operational contraction.
The frequent divergence between net income and operating cash flow indicates that non-cash items and working capital swings are the primary drivers of reported results rather than core operational efficiency. Investors should monitor this disconnect, as it suggests that the company's reported earnings may not be a reliable proxy for its actual ability to fund operations internally.
As evidenced by the trailing ten-quarter data, AEHR has struggled to maintain positive free cash flow, with FCF margins reaching as low as -46.0% in 2025Q2, highlighting a structural inability to cover capital requirements through internal operations during the current industry-wide semiconductor equipment downturn.
The consistent negative FCF trajectory suggests that the company's capital-intensive business model is currently outstripping its ability to generate cash from sales. This trend warrants investigation into whether the current level of R&D and infrastructure spending is sustainable without further external financing or a significant rebound in system-level demand.
Based on the provided cash flow statements, working capital changes have frequently acted as a significant drag on cash, with a notable $6.6M outflow in 2025Q2, indicating that the company's cash cycle is highly sensitive to the timing of customer acceptances and inventory management.
The erratic nature of working capital suggests that the company is struggling to manage its cash conversion cycle effectively amidst lumpy revenue recognition. This volatility may indicate that inventory is building up faster than it can be converted into cash, potentially signaling a mismatch between production schedules and actual customer demand.
Data from recent filings shows that despite persistent operating losses, the company has continued to allocate cash toward share repurchases, with $454,000 utilized in 2026Q3, a decision that appears counterintuitive given the current need to preserve liquidity during a period of negative cash flow.
The decision to prioritize share buybacks while the core business is burning cash may suggest a management focus on supporting the stock price rather than prioritizing balance sheet resilience. Investors should monitor whether this capital allocation strategy remains viable if the current negative cash flow trend continues into future quarters.
Quick answers to the most common questions about buying AEHR stock.
Aehr Test Systems (AEHR) generated $-7.4M in net cash from operating activities in 2025. This reflects the cash generated directly from core business operations.
Aehr Test Systems (AEHR) reported negative free cash flow of $12.4M in 2025, indicating capital requirements exceeded cash from operations.
Aehr Test Systems (AEHR) spent $5.0M on capital expenditures in 2025. CapEx represents the cash invested in physical assets like property, plant, and equipment to maintain or grow the business.
In 2025, Aehr Test Systems (AEHR) spent $0.8M on share repurchases. This shows the company's commitment to returning capital to its equity investors.