Free cash flow generation remains inconsistent, with margins compressing to 2.6% in 2026Q1, largely due to a $134 million outflow related to working capital changes.
| Metric | TTM | Dec'25 | Dec'24 | Dec'23 | Dec'22 | Dec'21 | Dec'20 | Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | Dec'14 | Dec'13 | Dec'12 | Dec'11 | Dec'10 | Dec'09 | Dec'08 | Dec'07 | Dec'06 | Dec'05 | Dec'04 | Dec'03 | Dec'02 | Dec'01 | Dec'00 | Dec'99 | Dec'98 |
|---|
| Cash from Operations | 557M | 645M | 528M | 319M | 529M | 639.5M | 513M | 244.5M | 413.78M | 355.22M | 180.1M | 138.29M | 101.91M | 76.09M | 137.17M | 156.04M | 163.47M | 7.37M | 89.78M | 119.12M | 78.21M | 64.16M | 66.4M | -185K | 13.85M | 20.11M | 34.03M | 17.1M | 23M |
| Operating CF Margin % | - | 16.41% | 14.72% | 8.81% | 14.91% | 21.68% | 22.02% | 12.87% | 19.94% | 18.54% | 13.9% | 17% | 13.05% | 11.37% | 21.32% | 18.97% | 19.16% | 1.79% | 13.88% | 15.26% | 9.99% | 12.6% | 11.96% | -0.05% | 4.4% | 7.01% | 10.41% | 9.14% | 16.45% |
| Operating CF Growth % | 5.05% | 22.16% | 65.52% | -39.7% | -17.28% | 24.66% | 109.82% | -40.91% | 16.49% | 97.24% | 30.23% | 35.7% | 33.94% | -44.53% | -12.09% | -4.55% | 2118.65% | -91.79% | -24.63% | 52.3% | 21.9% | -3.37% | 35991.35% | -101.34% | -31.13% | -40.92% | 99.03% | -25.65% | - |
| Net Income | 327M | 295M | 190M | -1.84B | 333M | 551.4M | 350M | 140.4M | 392.9M | 339.13M | 104.81M | 122.3M | 115.78M | 35.78M | 48.03M | 129.73M | 142.59M | -212.66M | 30.12M | 86.36M | 94.23M | 34.56M | 69.84M | -16.39M | -39.54M | -31.04M | 46.23M | 24M | 5M |
| Depreciation & Amortization | 350M | 370M | 348M | 397M | 216M | 104.1M | 99M | 110M | 79.85M | 82.56M | 65.93M | 22.1M | 20.51M | 17.1M | 14.44M | 12.98M | 13.82M | 18.76M | 23.52M | 30.64M | 31.35M | 26.21M | 27.84M | 28.2M | 28.73M | 26.7M | 10.52M | 6.2M | 6.2M |
| Stock-Based Compensation | 51M | 55M | 48M | 54M | 45M | 37M | 30M | 49.2M | 27.26M | 24.38M | 25.23M | 13.01M | 11.31M | 13.99M | 13.03M | 11.22M | 5.69M | 6.6M | 15.27M | 12.92M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Deferred Taxes | -183M | -196M | -226M | -234M | -46M | 1.2M | -7M | -4.21M | -19.4M | -4.83M | -38.82M | 410K | 5.26M | -3.09M | 3.82M | 7.55M | 10.1M | -7.2M | -4.97M | -10.28M | -11.52M | 303K | -10.23M | 716K | 250K | -11.45M | -3.14M | -300K | 0 |
| Other Non-Cash Items | 61M | 46M | 164M | 2.04B | 138M | 17.8M | 31M | 37.47M | 30.97M | -35.58M | 45.29M | 12.72M | 12.49M | 21.57M | 13.85M | 10.09M | 11.04M | 234.54M | 4.34M | 5.37M | 13.85M | 1.57M | -5.47M | 151K | 14.8M | 4.84M | 603K | -3.3M | 1.2M |
| Working Capital Changes | -50M | 75M | 4M | -99M | -157M | -72M | 10M | -88.35M | -97.8M | -50.44M | -22.33M | -32.25M | -63.45M | -9.26M | 43.99M | -15.54M | -19.77M | -32.67M | 21.49M | -5.89M | -49.7M | 1.51M | -15.58M | -12.87M | 9.61M | 31.06M | -20.19M | -9.5M | 10.6M |
| Change in Receivables | 43M | 0 | -36M | 114M | -4M | -52.7M | -45M | -93K | -546K | -44.08M | -58.11M | 2.33M | 6.1M | -36.15M | 38.29M | 17.92M | 2.79M | 2.57M | 23.57M | 18.26M | -33.55M | -4.7M | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Change in Inventory | -42M | 0 | 20M | -76M | -236M | -91.7M | -52M | -29.29M | -73.78M | -72.47M | -13.8M | -14.5M | 15.02M | -29.8M | 5.34M | -11.7M | 17.12M | 19.61M | 18.49M | 1.21M | -46.01M | -1.83M | -15.92M | -6.66M | 6.6M | 16.22M | -18.4M | -2.9M | 6.5M |
| Change in Payables | 51M | 0 | 21M | -99M | 61M | 55.5M | 21M | -24.15M | 2.02M | 11.4M | 16.18M | -10.63M | -5.48M | 23.17M | -8.28M | -11.65M | 11.22M | 6.1M | -9.18M | -18.86M | 5.73M | 6.36M | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Cash from Investing | -152M | -145M | -117M | -84M | -4.55B | -204.6M | -202M | -947.2M | 72.75M | 22.64M | -726.99M | -167.37M | -24.81M | -36.53M | -117.87M | -6.08M | -105.62M | -9.63M | -74.05M | -60.95M | -114.25M | 20.05M | -44.24M | -21.35M | -51.93M | -18.13M | -19.63M | -33.4M | -2.1M |
| Capital Expenditures | -156M | -148M | -118M | -87M | -164M | -86.7M | -85M | -63.9M | -62.94M | -31.29M | -19.12M | -12.41M | -13.18M | -12.41M | -17.7M | -15.57M | -15.82M | -4.18M | -13.46M | -15.09M | -10.69M | -10.28M | -18.27M | -6.35M | -7.95M | -14.64M | -11M | -5.5M | -3.1M |
| CapEx % of Revenue | 3.83% | 3.76% | 3.29% | 2.4% | 4.62% | 2.94% | 3.65% | 3.36% | 3.03% | 1.63% | 1.48% | 1.53% | 1.69% | 1.85% | 2.75% | 1.89% | 1.85% | 1.02% | 2.08% | 1.93% | 1.37% | 2.02% | 3.29% | 1.88% | 2.53% | 5.1% | 3.36% | 2.94% | 2.22% |
| Acquisitions | 1M | 3M | 0 | 0 | -4.47B | -268.4M | 0 | -988.6M | 0 | 72.51M | -939.59M | -9.91M | -86.95M | -2.33M | -22.61M | 7K | 15.58M | 128K | 0 | -24.02M | -98.67M | 241K | 1.62M | -2.15M | -17.7M | -7.12M | 65K | 300K | 0 |
| Investments | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Other Investing | 3M | 0 | 1M | 3M | 9M | 0 | 0 | 42.11M | 0 | 66K | 273K | 8K | 1.59M | -216K | -1.45M | -448K | -1.33M | 333K | 63K | 1.82M | -249K | 901K | 6.46M | 1.1M | 2.43M | 5.11M | -17.95M | -900K | 1M |
| Cash from Financing | -519M | -562M | -549M | -259M | 3.97B | -65M | -122M | 476.2M | -178.01M | -279.69M | 560.12M | -47.1M | -52.72M | -37.15M | -46.97M | 2.39M | -5.03M | -5.56M | -114.79M | -58.72M | 30.47M | 921K | 39.72M | 5.29M | 5.46M | -4.26M | -5.04M | 41.2M | -11.8M |
| Debt Issued (Net) | -442M | -451M | -266M | -187M | 4.28B | -14M | -57M | 530.7M | -49.5M | -229.3M | 598.48M | 0 | 0 | 0 | -6.45M | 1.89M | -13.66M | -5.45M | -11.18M | -5.52M | 2.75M | -5.14M | 1.14M | -3.31M | -2.98M | -6.8M | -6.97M | -2M | -5.8M |
| Equity Issued (Net) | -1M | -45M | 0 | 0 | 0 | 0 | 0 | 0 | -75M | 0 | -1.54M | -13.29M | -20.81M | -2.88M | -9.94M | -2.01M | 0 | -114K | -115.72M | -101.16M | 23.25M | 6.06M | 38.58M | 8.6M | 8.92M | 6.39M | 3.34M | 83.3M | 0 |
| Dividends Paid | -61M | -59M | -59M | -59M | -52M | -47.6M | -44M | -43.53M | -42.41M | -38.18M | -36.36M | -35.97M | -34.85M | -33.98M | -32.69M | -31.37M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -1.42M | -40M | -6.2M |
| Share Repurchases | 0 | -45M | 0 | 0 | 0 | 0 | 0 | 0 | -75M | 0 | -1.54M | -13.29M | -20.81M | -2.88M | -11.5M | -2.01M | 0 | 0 | -115.72M | -101.16M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Other Financing | -15M | -7M | -224M | -13M | -252M | -3.4M | -21M | -10.97M | -11.1M | -12.22M | -454K | 2.17M | 2.94M | -299K | 2.1M | 33.88M | 8.64M | 5K | 12.11M | 47.95M | 4.47M | 0 | 0 | 0 | -481K | -3.85M | 0 | -100K | 200K |
| Net Change in Cash | -86M | -39M | -161M | -34M | -57M | 358M | 193M | -229.7M | 310.46M | 99.98M | 6.34M | -77.86M | 16.54M | 1.31M | -25.33M | 150.44M | 51.47M | -8.25M | -104.71M | 8.76M | -5.37M | 82.18M | 63.73M | -14.16M | -32.05M | -2.21M | 8.96M | 24.5M | 8.7M |
| Free Cash Flow | 401M | 497M | 410M | 232M | 365M | 552.8M | 428M | 180.6M | 350.84M | 323.94M | 160.97M | 125.88M | 88.73M | 63.68M | 119.46M | 140.47M | 147.65M | 3.19M | 76.32M | 104.03M | 67.52M | 53.88M | 48.13M | -6.53M | 5.9M | 5.47M | 23.04M | 11.6M | 19.9M |
| FCF Margin % | 9.85% | 12.64% | 11.43% | 6.41% | 10.29% | 18.74% | 18.37% | 9.51% | 16.91% | 16.91% | 12.43% | 15.47% | 11.36% | 9.51% | 18.56% | 17.08% | 17.31% | 0.78% | 11.8% | 13.33% | 8.63% | 10.58% | 8.67% | -1.94% | 1.87% | 1.91% | 7.05% | 6.2% | 14.23% |
| FCF Growth % | -11.09% | 21.22% | 76.72% | -36.44% | -33.97% | 29.16% | 136.99% | -48.52% | 8.31% | 101.23% | 27.88% | 41.87% | 39.35% | -46.7% | -14.95% | -4.86% | 4530.01% | -95.82% | -26.64% | 54.07% | 25.32% | 11.95% | 836.71% | -210.71% | 7.88% | -76.26% | 98.6% | -41.71% | - |
| FCF per Share | 5.64 | 7.34 | 6.07 | 3.47 | 6.09 | 9.92 | 7.74 | 3.28 | 6.38 | 5.88 | 2.98 | 2.35 | 1.66 | 1.19 | 2.24 | 2.66 | 2.90 | 0.06 | 1.50 | 1.82 | 1.21 | 0.99 | 0.88 | -0.13 | 0.12 | 0.15 | 0.64 | 0.48 | 1.06 |
| FCF Conversion (FCF/Net Income) | 1.23x | 2.19x | 2.78x | -0.17x | 1.59x | 1.16x | 1.47x | 1.74x | 1.05x | 1.05x | 1.72x | 1.13x | 0.88x | 2.13x | 2.86x | 1.20x | 1.15x | -0.03x | 2.98x | 1.38x | 0.83x | 1.86x | 0.95x | 0.01x | -0.35x | -0.65x | 0.56x | 0.71x | 3.19x |
| Interest Paid | 0 | 0 | 268M | 305M | 110M | 23M | 26M | 39.9M | 14.6M | 20.47M | 20.84M | 34K | 44K | 60K | 212K | 19K | 78K | 187K | 649K | 830K | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Taxes Paid | 0 | 0 | 145M | 180M | 133M | 110M | 66M | 35.5M | 91.8M | 104.69M | 44.97M | -43.24M | 47.95M | 11.88M | 18.34M | 52.56M | 47.45M | 10.04M | 11.63M | 27.12M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
High Debt Leverage Sensitivity
According to recent SEC filings, MKSI's operating cash flow to net income ratio has exhibited extreme volatility, ranging from a negative 2.62 in 2023Q4 to a high of 5.30 in 2024Q2, suggesting that GAAP earnings are frequently decoupled from the company's actual cash-generating capacity.
The significant divergence between net income and operating cash flow appears largely driven by heavy non-cash charges, specifically the amortization of intangible assets from the Atotech and Newport acquisitions. Investors should monitor this gap closely, as it indicates that reported profitability may not fully capture the underlying cash requirements of the business model.
As reported in financial statements, free cash flow margins have fluctuated significantly over the last ten quarters, peaking at 16.5% in 2023Q4 before compressing to 2.6% in 2026Q1, which highlights the company's sensitivity to semiconductor capital equipment cycles and integration-related cash outflows.
The sharp contraction in FCF margin during the most recent quarter suggests that the company's cash generation is highly susceptible to shifts in working capital and operational scaling. This trend warrants further investigation into whether the current FCF profile is sufficient to support both debt service obligations and necessary R&D investments.
Based on MKSI's reported figures, working capital changes have been highly erratic, swinging from a $134 million cash outflow in 2026Q1 to a $91 million inflow in 2023Q4, indicating that inventory management and collection cycles remain primary drivers of short-term liquidity fluctuations.
These dramatic swings in working capital suggest that the company may be struggling to optimize its inventory levels in response to volatile demand from semiconductor OEMs. Such instability in cash conversion cycles may indicate potential inefficiencies in supply chain management that could exacerbate liquidity pressures during industry downturns.
Data from recent filings indicates that MKSI has prioritized debt management and consistent dividend payments, with share repurchases largely absent since 2025Q1, reflecting a shift toward balance sheet preservation following the significant capital outlays required for recent large-scale strategic acquisitions.
The cessation of buybacks suggests that management is focused on deleveraging, which appears prudent given the high debt burden associated with the Atotech integration. Investors should monitor whether this conservative capital allocation strategy persists, as it may limit the company's ability to return excess cash to shareholders in the near term.
Quick answers to the most common questions about buying MKSI stock.
MKS Inc. (MKSI) generated $645.0M in net cash from operating activities in 2025. This reflects the cash generated directly from core business operations.
MKS Inc. (MKSI) generated $497.0M in free cash flow in 2025. Free cash flow is the cash left over after capital expenditures, which can be used to pay dividends, repurchase shares, or pay down debt.
MKS Inc. (MKSI) spent $148.0M 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, MKS Inc. (MKSI) returned $59.0M to shareholders via cash dividends and spent $45.0M on share repurchases. This shows the company's commitment to returning capital to its equity investors.