Free cash flow generation remains erratic, evidenced by a wide margin variance ranging from a low of 3.6% in 2024Q1 to a peak of 44.2% in 2025Q4.
| 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 | Mar'13 | Mar'12 | Mar'11 | Mar'10 | Mar'09 | Mar'08 | Mar'07 | Mar'06 | Mar'05 | Mar'04 | Mar'03 | Mar'02 | Mar'01 | Mar'00 | Mar'99 | Mar'98 | Mar'97 | Mar'96 |
|---|
| Cash from Operations | 421.94M | 520.75M | 439.12M | 401.35M | 21.04M | 101.72M | 82.84M | 72.08M | 99.28M | 19.19M | -63.8M | -40.36M | 11.14M | 126.55M | -2.48M | -5.91M | -12.25M | 34.59M | 42.42M | 83.73M | 116.53M | -74.25M | -98.25M | -48.75M | -42.68M | -17.99M | -33.03M | -14.25M | -1.14M | -17.18M | -5.5M |
| Operating CF Margin % | - | 35.28% | 28.19% | 24.13% | 1.89% | 8.67% | 7.98% | 6.16% | 9.07% | 2.12% | -8.56% | -6.42% | 1.8% | 21.99% | -0.43% | -1.51% | -6.56% | 19.4% | 12.98% | 34.78% | 48.56% | -44.57% | -129.06% | -124.82% | -90.3% | -33.25% | -58.95% | -62.17% | -3.35% | -54.76% | -27.74% |
| Operating CF Growth % | -83.2% | 18.59% | 9.41% | 1807.21% | -79.31% | 22.78% | 14.94% | -27.4% | 417.36% | 130.08% | -58.08% | -462.33% | -91.2% | 5198.75% | 57.97% | 51.78% | -135.41% | -18.47% | -49.33% | -28.15% | 256.93% | 24.42% | -101.55% | -14.21% | -137.27% | 45.54% | -131.8% | -1153.59% | 93.38% | -212.27% | 39.56% |
| Net Income | 152.72M | 241.66M | 367.07M | 355.76M | -158.27M | -48.17M | -110.86M | -196.62M | -139.31M | -157.94M | -208.44M | -227.16M | -30.06M | 24.98M | -113.68M | -45.54M | -39.63M | 130.5M | 166.98M | 9.45M | 3.82M | -73.92M | -102.38M | -106.9M | -61.35M | -16.87M | -68.05M | -41.06M | -9.77M | -18.8M | -13.7M |
| Depreciation & Amortization | 19.74M | 27.16M | 28.53M | 74.93M | 77.86M | 78.65M | 81.85M | 80.41M | 103.66M | 98.52M | 94.26M | 85.6M | 98.09M | 73.75M | 93.68M | 8.65M | 25.03M | 10.27M | 12.14M | 11.99M | 10.88M | 10.62M | 10.91M | 9.32M | 10.5M | 7.7M | 6.43M | 21.62M | 2.65M | 2.57M | 2.4M |
| Stock-Based Compensation | -22.81M | 0 | 96.64M | 100.91M | 94.25M | 87.62M | 90.16M | 100.98M | 105.36M | 83.92M | 94.4M | 97.34M | 59.58M | 41.29M | 0 | 28.83M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Deferred Taxes | -2.51M | 28.77M | 40.52M | -99.9M | -32.8M | 5.08M | 9.98M | -319K | 10.62M | 7.23M | -9.69M | -37.58M | -19.19M | -2.11M | -14.56M | 841K | 94K | 3.71M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Other Non-Cash Items | 132.53M | 104.03M | 4.51M | 6.33M | 27.28M | 4.08M | -1.43M | 22.22M | 26.37M | -7.66M | -7.12M | -40.53M | -108.13M | 10.66M | 4.34M | 1.86M | 3.74M | -1.73M | -138.25M | 31.68M | 5.95M | 13.15M | 3.73M | 21.31M | 5.82M | -1.67M | 29.96M | 245.13K | -507.6K | 14.5K | 0 |
| Working Capital Changes | 75.79M | 119.12M | -98.15M | -36.66M | 12.71M | -25.55M | 13.13M | 65.41M | -7.42M | -4.88M | -27.2M | 81.98M | 10.86M | -15.44M | -1.1M | 8.45M | -15.4M | -122.96M | 1.56M | 30.61M | 95.89M | -24.11M | -10.51M | 27.51M | 2.35M | -7.15M | -1.38M | 4.94M | 6.49M | -958.33K | 5.8M |
| Change in Receivables | -14.94M | 30.17M | -56.34M | -44.51M | 25.25M | -38.01M | -18.05M | 29.98M | -58.63M | -42.49M | -35.62M | -16.45M | -17.4M | -14.32M | 0 | -14.01M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Change in Inventory | -12.31M | -14.06M | 3.09M | -2.71M | -31.02M | -24.77M | -22.93M | -13.08M | -2.67M | -30.19M | -26.38M | 19.62M | -31.24M | -6.58M | -4.88M | 5.21M | -4.04M | -5.14M | -1.45M | -12.14M | -3.78M | -3.07M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Change in Payables | 102.57M | 100.89M | -57.97M | 23.01M | 15.53M | 43.31M | 59.04M | 34.85M | 46.74M | 72.66M | 45.87M | 76.16M | 56.9M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Cash from Investing | 286.39M | 295.5M | -111.31M | 53.36M | -64.54M | -66.2M | -11.48M | -141.83M | -22.2M | -18.36M | 127.24M | -43.49M | -263.4M | -68.15M | -417.16M | 5.63M | 28.01M | 45.36M | 61.97M | -30.08M | -137.87M | -38.78M | -80.88M | 31.8M | 42.07M | 21.19M | -194.51M | 4.54M | -113.05M | -56.8M | -11.9M |
| Capital Expenditures | -30.31M | -40.42M | -33.48M | -48.05M | -38.26M | -29.02M | -42.22M | -90.94M | -69.43M | -51.3M | -43.66M | -52.88M | -33.65M | -22.22M | -16.99M | -9.4M | -15.79M | -5.5M | -21.89M | -36.3M | -28.66M | -17.82M | -15.1M | -46.27M | -33.38M | -10.02M | -5.76M | -24.06M | -7.99M | -2.24M | -5.6M |
| CapEx % of Revenue | 1.94% | 2.74% | 2.15% | 2.89% | 3.44% | 2.47% | 4.06% | 7.77% | 6.34% | 5.68% | 5.85% | 8.42% | 5.44% | 3.86% | 2.95% | 2.41% | 8.46% | 3.09% | 6.7% | 15.08% | 11.94% | 10.69% | 19.84% | 118.48% | 70.63% | 18.52% | 10.27% | 104.99% | 23.58% | 7.15% | 28.24% |
| Acquisitions | 1.08M | 2.79M | 97.98M | 0 | 485K | -713K | 2.75M | -7.97M | 507K | 162K | -15M | 50.5M | 27.19M | 193K | -494.77M | 0 | -8M | 0 | 0 | 12.57M | 122K | 252K | 784.24K | 6.06M | 371.38K | 0 | 0 | 5.38K | 1.08M | 0 | 0 |
| Investments | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Other Investing | 0 | 0 | 461K | 354K | 1.27M | 8.94M | 4.53M | 10M | 507K | 162K | 194K | 50.5M | 44.37M | -1.12M | 35K | 395K | 248K | 7.72M | 0 | -98K | 176K | 30K | -98.49K | -118.94K | -100.31M | -521.46K | -131.82K | -2.64M | -17.32K | 10.5K | 2.4M |
| Cash from Financing | 11.63M | 12.38M | -494.14M | -289.71M | -1.57M | 29.07M | -2.17M | 6.76M | -1.62M | 4.08M | -58.17M | 40.89M | 308.76M | -45.04M | 464.85M | -40.65M | -23.33M | -94.3M | -83.65M | -6.73M | 7.43M | 150.62M | 116.6M | 73.37M | 10.74M | -3.3M | 224.54M | 15.16M | 114.87M | 76.31M | 16.8M |
| Debt Issued (Net) | 0 | 0 | -291.79M | -3M | -3M | 20.32M | -2.84M | -2.84M | -743K | 0 | -65.81M | -6.75M | -6.75M | -83.46M | -83.46M | 443.32M | -45.4M | -23.49M | -83.44M | -1.58M | -1.78M | -1.12M | 147.59M | 113.19M | 41.47M | 5.02M | -5.63M | -7.2M | 15.6M | 3.08M | 1.66M |
| Equity Issued (Net) | -17.15M | 12.38M | -200.28M | -11.71M | 1.43M | 8.75M | 672K | 9.61M | 0 | 0 | 0 | 0 | 248.41M | -11.67M | 0 | 0 | 4.74M | -2.68M | -10.94M | -82.19M | -4.95M | 8.56M | 3.03M | 3.41M | 31.9M | 5.72M | 9.59M | 247.5M | 7M | 112.8M | 74.65M |
| 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 | 0 |
| Share Repurchases | -31.03M | -31.03M | -200.28M | -28.47M | -18.2M | -16.57M | -7.7M | -9.32M | -19.62M | -16.43M | -13.47M | -25.9M | -12.84M | -11.67M | 0 | -3.68M | 0 | -2.68M | -18M | -93.35M | -12.49M | 0 | 0 | 0 | 0 | 0 | -24.88K | 0 | 0 | 0 | 0 |
| Other Financing | 28.78M | 0 | -2.06M | -275M | 0 | 0 | 0 | 0 | -877K | 4.08M | 7.64M | 47.64M | 67.1M | 50.09M | 38.42M | 21.52M | 17.32M | 2.84M | 80K | 122K | 0 | 0 | 0 | -43.23M | -62.63M | -14.04M | -7.27M | -6.53M | 99.77M | -39.56M | -59.51M |
| Net Change in Cash | -399.81M | 828.63M | -166.32M | 165M | -45.07M | 64.58M | 69.19M | -62.99M | 75.47M | 4.92M | 5.27M | -42.95M | 56.5M | 13.36M | 45.21M | -40.93M | -7.57M | -14.35M | 20.74M | 46.92M | -13.91M | 37.59M | -62.58M | 56.46M | 10.1M | -177.36K | -3.01M | 5.42M | 696.25K | 2.35M | -600K |
| Free Cash Flow | 391.63M | 480.33M | 405.64M | 353.31M | -17.21M | 72.69M | 40.62M | -18.86M | 29.85M | -32.11M | -107.46M | -93.24M | -22.51M | 104.33M | -19.47M | -15.31M | -28.03M | 29.09M | 20.53M | 47.42M | 87.87M | -92.07M | -113.35M | -95.02M | -76.07M | -28.01M | -38.79M | -38.31M | -9.13M | -19.42M | -11.1M |
| FCF Margin % | 25.07% | 32.55% | 26.04% | 21.24% | -1.55% | 6.19% | 3.91% | -1.61% | 2.73% | -3.55% | -14.41% | -14.84% | -3.64% | 18.13% | -3.38% | -3.93% | -15.02% | 16.32% | 6.28% | 19.7% | 36.62% | -55.27% | -148.9% | -243.3% | -160.93% | -51.77% | -69.23% | -167.16% | -26.93% | -61.91% | -55.98% |
| FCF Growth % | -18.68% | 18.41% | 14.81% | 2152.79% | -123.68% | 78.95% | 315.34% | -163.2% | 192.96% | 70.12% | -15.25% | -314.17% | -121.58% | 635.87% | -27.2% | 45.4% | -196.38% | 41.66% | -56.7% | -46.03% | 195.44% | 18.77% | -19.29% | -24.92% | -171.59% | 27.79% | -1.23% | -319.6% | 52.98% | -74.94% | -14.43% |
| FCF per Share | 2.36 | 2.85 | 2.40 | 2.08 | -0.11 | 0.45 | 0.26 | -0.12 | 0.19 | -0.21 | -0.71 | -0.62 | -0.15 | 0.76 | -0.14 | -0.13 | -0.29 | 0.31 | 0.21 | 0.46 | 0.85 | -0.95 | -1.26 | -1.16 | -1.18 | -0.44 | -0.65 | -0.75 | -0.19 | -0.42 | -0.30 |
| FCF Conversion (FCF/Net Income) | 2.56x | 2.15x | 1.20x | 1.13x | -0.13x | -2.11x | -0.75x | -0.37x | -0.71x | -0.12x | 0.31x | 0.18x | -0.37x | 5.07x | -0.10x | 0.05x | 0.27x | -0.87x | 0.33x | 0.50x | 12.34x | -19.45x | 1.31x | 0.48x | 0.40x | 0.29x | 1.96x | 0.21x | 0.03x | 1.37x | 0.29x |
| Interest Paid | 0 | 0 | 23.01M | 22.75M | 13.56M | 6.9M | 8.29M | 0 | 12.53M | 11.14M | 12.46M | 12.32M | 12.49M | 0 | 7.66M | 21.66M | 1.68M | 4.92M | 15.34M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Taxes Paid | 0 | 0 | 2.59M | 44.24M | 20.75M | 1.89M | 620K | 0 | 754K | 2.99M | 5.53M | 705K | 2.8M | 0 | 5.92M | 10.07M | 60K | 114K | 860K | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Royalty stream arbitration uncertainty
As reported in recent financial statements, ALKS exhibits significant variance in cash conversion, with the OCF/NI ratio reaching an extreme 4.40 in 2025Q1, suggesting that reported net income frequently fails to capture the underlying cash-generating capacity of the company's core CNS and royalty business segments.
The wide divergence between net income and operating cash flow indicates that non-cash items and working capital swings are heavily distorting the bottom line. Investors should monitor whether this disconnect reflects genuine operational efficiency or merely the timing of milestone payments and royalty receipts.
Based on the provided cash flow data, ALKS's free cash flow margins have fluctuated wildly, ranging from a low of 3.6% in 2024Q1 to a peak of 44.2% in 2025Q4, highlighting a lack of consistent cash generation despite the company's high-margin royalty-heavy business model.
This erratic trajectory suggests that the company's cash flow is highly sensitive to the timing of revenue recognition and potential arbitration outcomes. The inability to maintain a stable FCF margin complicates long-term valuation and suggests that cash flow predictability remains a significant hurdle for the firm.
According to historical cash flow filings, working capital changes have been a primary driver of quarterly cash flow, with a notable $91.4M inflow in 2025Q4 contrasting sharply with the $66.3M outflow observed in 2024Q1, indicating significant volatility in the company's cash conversion cycle.
These large swings suggest that the company's cash position is heavily influenced by the timing of accounts receivable collections and inventory management. Such fluctuations may indicate that the business is susceptible to payment delays from partners or shifts in channel inventory levels.
As evidenced by recent financial disclosures, ALKS has prioritized share repurchases, including a $115.6M outlay in 2024Q3, while simultaneously navigating the spin-off of its oncology business, which appears to be a strategic pivot toward returning capital to shareholders rather than reinvesting in internal R&D.
The aggressive use of cash for buybacks during periods of earnings volatility warrants further investigation into management's long-term capital allocation strategy. Investors should consider whether these repurchases are intended to offset dilution or if they signal a lack of high-return internal investment opportunities.
Quick answers to the most common questions about buying ALKS stock.
Alkermes plc (ALKS) generated $520.8M in net cash from operating activities in 2025. This reflects the cash generated directly from core business operations.
Alkermes plc (ALKS) generated $480.3M 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.
Alkermes plc (ALKS) spent $40.4M 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, Alkermes plc (ALKS) spent $31.0M on share repurchases. This shows the company's commitment to returning capital to its equity investors.