Cash conversion efficiency remains inconsistent, as evidenced by an OCF/NI ratio that swung to -0.92 in 2026Q1, reflecting the impact of lumpy $8.8 billion acquisition outlays on liquidity.
| 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 | Dec'97 | Dec'96 |
|---|
| Cash from Operations | 17.89B | 16.47B | 21.47B | 13.01B | 19.09B | 14.11B | 10.25B | 13.44B | 10.92B | 6.45B | 10.38B | 12.42B | 7.86B | 11.65B | 10.02B | 12.38B | 10.82B | 3.39B | 6.57B | 7B | 6.77B | 7.61B | 8.8B | 9.86B | 9.53B | 9.08B | 7.69B | 6.13B | 5.33B | 6.32B | 5.43B |
| Operating CF Margin % | - | 25.37% | 33.46% | 21.64% | 32.21% | 28.97% | 24.7% | 34.36% | 25.82% | 16.07% | 26.07% | 31.45% | 18.61% | 26.47% | 21.2% | 25.77% | 23.53% | 12.37% | 27.55% | 28.93% | 29.89% | 34.57% | 38.3% | 43.86% | 44.43% | 42.83% | 19.05% | 18.74% | 19.81% | 26.72% | 27.37% |
| Operating CF Growth % | -17.86% | -23.27% | 65.06% | -31.89% | 35.34% | 37.61% | -23.71% | 23.05% | 69.41% | -37.87% | -16.46% | 58.03% | -32.56% | 16.28% | -19.07% | 14.42% | 219.04% | -48.38% | -6.11% | 3.46% | -11.08% | -13.53% | -10.78% | 3.5% | 4.94% | 18.12% | 25.39% | 15.06% | -15.65% | 16.38% | 84.35% |
| Net Income | 8.94B | 18.25B | 17.13B | 365M | 14.53B | 12.36B | 7.08B | 9.78B | 6.19B | 2.42B | 3.94B | 4.46B | 11.93B | 4.52B | 6.3B | 6.39B | 982M | 13.02B | 7.81B | 3.28B | 4.43B | 4.63B | 5.81B | 6.83B | 7.15B | 7.28B | 6.82B | 5.89B | 5.25B | 4.61B | 3.88B |
| Depreciation & Amortization | 6.25B | 5.84B | 4.5B | 3.87B | 3.91B | 3.21B | 3.63B | 3.65B | 4.52B | 4.64B | 5.44B | 6.38B | 6.69B | 6.99B | 6.98B | 7.43B | 7.38B | 2.58B | 1.63B | 1.99B | 2.27B | 1.71B | 1.45B | 1.31B | 1.49B | 1.46B | 1.28B | 1.14B | 1.02B | 1.03B | 927.1M |
| Stock-Based Compensation | 605M | 0 | 761M | 645M | 541M | 479M | 441M | 417M | 348M | 312M | 300M | 299M | 278M | 276M | 335M | 369M | 509M | 415.5M | 219M | 211M | 168M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Deferred Taxes | -1.8B | -1.67B | -1.25B | -1.9B | -1.57B | 187M | -668M | -556M | -509M | -2.62B | -1.52B | -764M | -2.6B | -330M | 669M | -1.54B | -1.09B | 1.82B | 530.1M | -1.78B | -530.2M | 9M | 48.9M | 131.7M | 444.8M | 0 | 0 | 0 | 0 | 0 | 0 |
| Other Non-Cash Items | 8.78B | 1.03B | 3.99B | 12.23B | 4.47B | 1.71B | 4.36B | 2.22B | 1.92B | 6.72B | 4.82B | 2.32B | -10.27B | 997M | -123M | 498M | 2.11B | -11.74B | 367M | 1.95B | 562.6M | 79.6M | -35.4M | 1.1B | -100.9M | 458M | 611.9M | 2.55B | -193.3M | 651.2M | 554.4M |
| Working Capital Changes | -4.88B | -6.98B | -3.67B | -2.21B | -2.78B | -3.84B | -4.59B | -2.07B | -1.55B | -5.02B | -2.6B | -268M | 1.82B | -794M | -4.14B | -766M | 930M | -2.71B | -3.98B | 1.36B | -137.4M | 1.18B | 1.52B | 489.1M | 547M | -123.7M | -1.02B | -3.45B | -741.7M | 17M | 64.9M |
| Change in Receivables | 0 | -1.09B | -244M | -1.15B | -644M | -2.03B | -1B | 294M | -418M | 297M | -619M | -480M | -554M | 436M | 349M | -1.17B | -1.09B | 165.2M | -83M | 21M | -241M | -209M | -7M | 603M | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Change in Inventory | 0 | -1.18B | -835M | -816M | -161M | -674M | -855M | -508M | -911M | -145M | 206M | 805M | 79M | -365M | -482M | -678M | 1.99B | 1.21B | -452.1M | -40.7M | 226.5M | 125.6M | 331.9M | -435.3M | 166.4M | -557.5M | -210.1M | -223M | -409.5M | -53.5M | -267.6M |
| Change in Payables | 0 | 110M | 182M | -380M | -289M | 405M | 724M | 399M | 230M | 254M | 278M | -37M | 593M | 522M | -302M | 182M | 124M | -45.2M | 170M | -259M | 395M | 241M | 174M | -509M | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Cash from Investing | -22.46B | -13.74B | -7.73B | -14.08B | -4.96B | -16.55B | -9.44B | -2.63B | 4.31B | 2.68B | -3.21B | -4.76B | -374M | -3.15B | -6.8B | -2.89B | -3.5B | 3.16B | -1.83B | -2.81B | -4.88B | 2.27B | -1.64B | -4.23B | -4.01B | -4.31B | -3.64B | -2.82B | -11.4M | -1.6B | -1.98B |
| Capital Expenditures | -3.77B | -4.11B | -3.37B | -3.86B | -4.39B | -4.45B | -4.68B | -3.47B | -2.62B | -1.89B | -1.61B | -1.28B | -2.32B | -1.55B | -1.95B | -1.72B | -1.68B | -1.46B | -1.3B | -1.01B | -980.2M | -1.4B | -1.73B | -1.92B | -2.37B | -2.72B | -2.73B | -2.56B | -1.97B | -1.45B | -1.2B |
| CapEx % of Revenue | 5.76% | 6.33% | 5.25% | 6.43% | 7.4% | 9.13% | 11.28% | 8.88% | 6.18% | 4.71% | 4.05% | 3.25% | 5.49% | 3.52% | 4.13% | 3.59% | 3.65% | 5.33% | 5.44% | 4.18% | 4.33% | 6.37% | 7.51% | 8.52% | 11.05% | 12.85% | 6.76% | 7.83% | 7.34% | 6.13% | 6.04% |
| Acquisitions | -18.82B | -10.04B | -4.09B | -12.03B | -121M | -12.91B | -6.61B | -4.95B | -431M | -396M | -780M | -7.43B | 11.24B | -200M | 1.95B | -50M | 391M | -8.97B | 0 | -1.14B | 0 | 0 | -12.8M | -1.53B | 0 | 0 | 0 | 0 | 2.59B | 910M | 0 |
| Investments | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Other Investing | 369M | -58M | -127M | 1.11B | 32M | -225M | 130M | 378M | 102M | 38M | 482M | 221M | 115M | 293M | -1.75B | -116M | 426M | 5.72B | 365.4M | -1.39B | -3M | -3.1M | -6.6M | -25M | -100K | -190.2M | 56.1M | 1.65B | 432.3M | -152.6M | -142.7M |
| Cash from Financing | 852M | -1.92B | -7.03B | -4.81B | -9.12B | 2.59B | -2.83B | -8.86B | -13.16B | -10.01B | -9.04B | -5.39B | -15.11B | -5.99B | -3.27B | -6.9B | -5.44B | -1.64B | -5.52B | -4.87B | -5.6B | -3.04B | -5.59B | -6.83B | -5.53B | -5.07B | -3.45B | -3.87B | -3.92B | -4.86B | -3.84B |
| Debt Issued (Net) | 13.8B | 11.38B | 2.31B | 4.18B | -2.25B | 1.63B | 5.01B | 1.25B | 837M | -1.13B | -1.31B | 3.49B | -3.47B | 4.53B | 3.16B | -471M | 748M | 1.78B | 468M | -1.18B | -1.27B | 1.28B | 115.4M | -1.78B | -394.8M | 1.94B | 904.5M | 2.13B | 1.58B | 494.4M | -21.3M |
| Equity Issued (Net) | -777M | -4.99B | -1.31B | -1.35B | 384M | -840M | -1.28B | -4.78B | -9.09B | -4.01B | -3.43B | -4.19B | -7.7B | -6.52B | -2.59B | -1.6B | -1.23B | 0 | -2.73B | -531.1M | -632.4M | -878.8M | -2.23B | -1.65B | -1.77B | -3.59B | -1.4B | -3.26B | -3.14B | -3.16B | -2.05B |
| Dividends Paid | -8.23B | -8.18B | -7.84B | -7.45B | -7.01B | -6.61B | -6.21B | -5.7B | -5.17B | -5.17B | -5.12B | -5.12B | -5.25B | -5.28B | -5.24B | -4.81B | -4.85B | -3.48B | -3.28B | -3.31B | -3.32B | -3.35B | -3.31B | -3.25B | -3.19B | -3.15B | -2.8B | -2.59B | -2.25B | -2.04B | -1.73B |
| Share Repurchases | -981M | -5.08B | -1.31B | -1.35B | 0 | -840M | -1.28B | -4.78B | -9.09B | -4.01B | -3.43B | -4.19B | -7.7B | -6.52B | -2.59B | -1.92B | -1.59B | 0 | -2.73B | -1.43B | -1B | -1.02B | -2.47B | -2.03B | -2.09B | -3.89B | -3.55B | -3.58B | -3.63B | -3.57B | -2.49B |
| Other Financing | -3.94B | -131M | -195M | -203M | -240M | 8.41B | -347M | 366M | 266M | 304M | 821M | 424M | 1.18B | 1.15B | 1.4B | -22M | -106M | 59.7M | 13M | 156.2M | -375.3M | -93.1M | -161.8M | -148.5M | -172.5M | 41.4M | -149.2M | -152.5M | -114.1M | -153.9M | -36M |
| Net Change in Cash | -3.28B | 1.37B | 6.41B | -5.86B | 4.61B | 14M | -1.77B | 1.97B | 1.87B | -423M | -2.01B | 1.08B | -8.18B | 2.17B | -80M | 2.63B | 1.59B | 4.94B | -967.8M | -578.6M | -3.67B | 6.71B | 1.68B | -1.04B | 99M | -392.8M | 514.9M | -584.3M | 1.48B | -227.3M | -495M |
| Free Cash Flow | 14.12B | 12.36B | 18.1B | 9.14B | 14.71B | 9.66B | 5.82B | 9.97B | 8.31B | 4.56B | 8.76B | 11.26B | 6.54B | 10.11B | 8.07B | 10.66B | 9.79B | 1.93B | 7.17B | 5.99B | 5.79B | 6.21B | 7.07B | 7.95B | 7.16B | 6.36B | 4.96B | 3.57B | 3.35B | 4.87B | 4.23B |
| FCF Margin % | 21.52% | 19.04% | 28.2% | 15.21% | 24.81% | 19.84% | 14.03% | 25.48% | 19.64% | 11.37% | 22.01% | 28.5% | 15.49% | 22.95% | 17.07% | 22.19% | 21.29% | 7.04% | 30.07% | 24.75% | 25.56% | 28.19% | 30.79% | 35.34% | 33.38% | 29.98% | 12.29% | 10.91% | 12.47% | 20.59% | 21.34% |
| FCF Growth % | -17.16% | -31.7% | 97.92% | -37.83% | 52.23% | 65.88% | -41.57% | 19.98% | 82.05% | -47.92% | -22.15% | 72.02% | -35.26% | 25.26% | -24.32% | 8.88% | 406.94% | -73.07% | 19.78% | 3.51% | -6.78% | -12.26% | -10.99% | 11% | 12.65% | 28.14% | 38.91% | 6.42% | -31.08% | 15.05% | 118.24% |
| FCF per Share | 5.71 | 4.93 | 7.12 | 3.59 | 5.79 | 3.81 | 2.29 | 3.86 | 3.10 | 1.66 | 3.14 | 3.96 | 2.23 | 3.37 | 2.62 | 3.45 | 3.14 | 0.85 | 3.35 | 2.73 | 2.64 | 2.82 | 3.18 | 3.53 | 3.14 | 2.74 | 2.11 | 1.48 | 1.37 | 1.97 | 1.70 |
| FCF Conversion (FCF/Net Income) | 1.58x | 0.90x | 1.25x | 35.63x | 1.32x | 1.08x | 1.45x | 1.37x | 1.76x | 2.69x | 2.65x | 2.80x | 0.66x | 2.65x | 1.62x | 1.97x | 12.57x | 0.26x | 0.84x | 2.14x | 1.53x | 1.64x | 1.51x | 1.44x | 1.33x | 1.25x | 1.13x | 1.04x | 1.02x | 1.37x | 1.40x |
| Interest 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 | 0 |
| Taxes 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 | 0 |
Keytruda patent cliff exposure
As reported in financial statements, Merck's OCF/NI ratio has fluctuated wildly, reaching a low of -0.92 in 2026Q1 and a high of 2.94 in 2024Q3, illustrating a significant disconnect between accounting net income and the actual cash generated by core pharmaceutical operations.
The extreme variance in the conversion ratio suggests that non-cash charges and aggressive R&D accounting are heavily distorting the relationship between reported profitability and cash flow. Investors should monitor this divergence, as it indicates that net income is an unreliable proxy for the company's true ability to fund its capital-intensive pipeline.
Based on recent SEC filings, Merck's free cash flow margin has been highly inconsistent, swinging from a negative 5.1% in 2023Q4 to a peak of 51.1% in 2024Q3, which highlights the impact of lumpy acquisition costs and irregular R&D spending on cash generation.
The erratic FCF trajectory appears to be a direct consequence of management's strategy to prioritize long-term asset acquisition over consistent quarterly cash flow. This volatility warrants further investigation into whether the current cash generation profile can sustain both dividend commitments and the necessary R&D investment required to offset future patent cliffs.
According to the provided cash flow data, Merck has experienced persistent negative working capital changes in seven of the last ten quarters, with a significant outflow of $3.7 billion in 2025Q1, suggesting inefficient management of inventory and receivables relative to sales growth.
The recurring negative working capital adjustments indicate that the company is tying up significant cash in its supply chain, potentially due to inventory stocking for new product launches or extended collection cycles. This trend appears to be a structural headwind that consistently suppresses operating cash flow regardless of top-line performance.
As indicated by the financial data, Merck has deployed substantial capital toward acquisitions, including an $8.8 billion outlay in 2026Q1, while simultaneously maintaining consistent dividend payments of approximately $2.0 billion per quarter, signaling a high-stakes approach to replacing aging revenue streams.
The heavy reliance on large-scale acquisitions to drive growth suggests that management is attempting to buy its way out of future patent expirations. Investors should monitor the return on these investments, as the current pace of cash deployment may eventually strain the balance sheet if the acquired assets fail to deliver expected synergies.
Quick answers to the most common questions about buying MRK stock.
Merck & Co., Inc. (MRK) generated $16.47B in net cash from operating activities in 2025. This reflects the cash generated directly from core business operations.
Merck & Co., Inc. (MRK) generated $12.36B 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.
Merck & Co., Inc. (MRK) spent $4.11B 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, Merck & Co., Inc. (MRK) returned $8.18B to shareholders via cash dividends and spent $5.08B on share repurchases. This shows the company's commitment to returning capital to its equity investors.