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Ionis Pharmaceuticals Financials

IONS
Source SEC Filings (10-K/10-Q) Data as of Mar 31, 2026 Currency USD FYE December

This page shows Ionis Pharmaceuticals (IONS) financial statements, including the income statement, balance sheet, cash flow statement, and key financial ratios. View 18 years of annual fundamentals and quarterly data, with year-over-year growth rates and compound annual growth rates (CAGR). All figures are derived from SEC filings (10-K and 10-Q reports).

Rhea AI IONS FY2025

Ionis shows a research-heavy, asset-light revenue model where cash burn and external financing matter more than production costs.

From FY2024 to FY2025, cash burn improved faster than reported losses: operating cash outflow narrowed from -$500.9M to -$268.6M, a bigger shift than the net-loss improvement shown on the income statement. Yet financing inflow of $675.8M alongside 2.7x debt-to-equity shows FY2025 was still funded externally rather than by self-sustaining operations.

Gross margin near pure revenue at 98.3% says the business is not constrained by manufacturing or delivery cost. The economic drag sits in R&D intensity: FY2025 research spending of $915.6M almost matched revenue, so added sales still have to outrun a development budget that is running at near-revenue scale.

Short-term liquidity still exceeded near-term obligations, but the cushion thinned as the current ratio fell from 8.5x to 3.8x in one year. With $3.03B of liabilities and only $489.1M of equity, the balance sheet now has a much smaller equity buffer against continued losses, which helps explain why financing remains a recurring part of the model.

[ NOT FINANCIAL ADVICE ]

Financial Health Signals

Cash Runway Dilution R&D Intensity Revenue Progress Burn Trend Balance Sheet 56 / 100
Financial Health Score 56/100
Scored as: Emerging companies peer group

Scored against emerging companies for FY2025. Each of the six dimensions is a percentile rank within that peer group; the overall is their average, with missing dimensions counted as zero out of six. A high score means strong standing among peers, not absolute cross-industry strength. How this score is calculated →

Health score ≠ stock price. This rates the quality of Ionis Pharmaceuticals's business: profitability, growth, balance sheet strength. It doesn't tell you whether the stock is a good buy at today's price. Not financial advice. Use it alongside valuation analysis and your own research.

Cash Runway
50
Dilution
56
R&D Intensity
91
Revenue Progress
60
Burn Trend
49
Balance Sheet
27
Altman Z-Score Distress
1.72

Ionis Pharmaceuticals scores 1.72, below the 1.81 distress threshold. The score is driven primarily by a large market capitalization ($10.6B) relative to total liabilities ($3.0B). This indicates elevated financial distress risk and warrants close attention to liquidity and debt levels.

Distress-screening estimate for non-financial companies. Not computed for banks or insurers, where the Altman model does not apply.

Piotroski F-Score Neutral
4/9

Ionis Pharmaceuticals passes 4 of 9 financial strength tests. 2 of 4 profitability signals pass, 1 of 3 leverage/liquidity signals pass, 1 of 2 efficiency signals pass.

Earnings Quality Low Quality
0.70x

For every $1 of reported earnings, Ionis Pharmaceuticals generates $0.70 in operating cash flow (-$268.6M OCF vs -$381.4M net income). This low ratio suggests earnings are primarily driven by accounting accruals rather than cash generation, which may not be sustainable.

Interest Coverage At Risk
-22.1x

Ionis Pharmaceuticals earns $-22.1 in operating income for every $1 of interest expense (-$381.7M vs $17.3M). This narrow margin raises concern about the company's ability to service its debt if operating income declines.

Key Financial Metrics

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Earnings & Revenue

Revenue
$943.7M
YoY+33.8%
5Y CAGR+5.3%
10Y CAGR+12.8%

Ionis Pharmaceuticals generated $943.7M in revenue in fiscal year 2025. This represents an increase of 33.8% from the prior year.

EBITDA
-$369.2M
YoY+20.3%

Ionis Pharmaceuticals's EBITDA was -$369.2M in fiscal year 2025, measuring earnings before interest, taxes, depreciation, and amortization. This represents an increase of 20.3% from the prior year.

Net Income
-$381.4M
YoY+16.0%

Ionis Pharmaceuticals reported -$381.4M in net income in fiscal year 2025. This represents an increase of 16.0% from the prior year.

EPS (Diluted)
$-2.38
YoY+21.7%

Ionis Pharmaceuticals earned $-2.38 per diluted share (EPS) in fiscal year 2025. This represents an increase of 21.7% from the prior year.

Cash & Balance Sheet

Free Cash Flow
-$320.0M
YoY+41.4%

Ionis Pharmaceuticals generated -$320.0M in free cash flow in fiscal year 2025, representing cash available after capex. This represents an increase of 41.4% from the prior year.

Cash & Debt
$372.3M
YoY+53.8%
5Y CAGR-1.3%
10Y CAGR+11.2%

Ionis Pharmaceuticals held $372.3M in cash against $1.3B in long-term debt as of fiscal year 2025.

Dividends Per Share
N/A
Shares Outstanding
163M
YoY+2.7%
5Y CAGR+3.1%
10Y CAGR+3.1%

Ionis Pharmaceuticals had 163M shares outstanding in fiscal year 2025. This represents an increase of 2.7% from the prior year.

Margins & Returns

Gross Margin
98.3%
YoY-0.1pp
5Y CAGR-0.1pp

Ionis Pharmaceuticals's gross margin was 98.3% in fiscal year 2025, indicating the percentage of revenue retained after direct costs. This is down 0.1 percentage points from the prior year.

Operating Margin
-40.5%
YoY+26.9pp
5Y CAGR-16.9pp
10Y CAGR-13.8pp

Ionis Pharmaceuticals's operating margin was -40.5% in fiscal year 2025, reflecting core business profitability. This is up 26.9 percentage points from the prior year.

Net Margin
-40.4%
YoY+24.0pp
5Y CAGR+20.5pp
10Y CAGR-9.3pp

Ionis Pharmaceuticals's net profit margin was -40.4% in fiscal year 2025, showing the share of revenue converted to profit. This is up 24.0 percentage points from the prior year.

Return on Equity
-78.0%
YoY-0.8pp
5Y CAGR-18.2pp
10Y CAGR-34.0pp

Ionis Pharmaceuticals's ROE was -78.0% in fiscal year 2025, measuring profit generated per dollar of shareholder equity. This is down 0.8 percentage points from the prior year.

Capital Allocation

R&D Spending
$915.6M
YoY+1.6%
5Y CAGR+11.5%
10Y CAGR+11.1%

Ionis Pharmaceuticals invested $915.6M in research and development in fiscal year 2025. This represents an increase of 1.6% from the prior year.

Share Buybacks
N/A
Capital Expenditures
$51.4M
YoY+13.6%
5Y CAGR+7.9%
10Y CAGR+20.9%

Ionis Pharmaceuticals invested $51.4M in capex in fiscal year 2025, funding long-term assets and infrastructure. This represents an increase of 13.6% from the prior year.

IONS Income Statement

Metric Q1'26 Q4'25 Q3'25 Q2'25 Q1'25 Q4'24 Q3'24 Q2'24
Revenue $246.1M+21.0% $203.3M+29.7% $156.7M-65.3% $452.0M+243.5% $131.6M-41.9% $226.6M+69.3% $133.8M-40.6% $225.3M
Cost of Revenue $3.0M N/A $2.3M-43.7% $4.2M+183.7% $1.5M N/A $1.1M-74.3% $4.2M
Gross Profit $243.1M N/A $154.4M-65.5% $447.9M+244.1% $130.1M N/A $132.7M-40.0% $221.1M
R&D Expenses N/A N/A N/A N/A N/A N/A N/A N/A
SG&A Expenses $150.4M N/A $96.8M+6.8% $90.6M+18.8% $76.3M N/A $61.6M-5.3% $65.1M
Operating Income -$117.4M+45.2% -$214.5M-33.9% -$160.2M-214.6% $139.8M+195.2% -$146.9M-32.5% -$110.8M+25.5% -$148.7M-124.9% -$66.1M
Interest Expense $5.2M N/A $4.2M+2.4% $4.1M+0.1% $4.1M N/A $4.2M-7.3% $4.5M
Income Tax $218K N/A $213K+1165.0% -$20K-117.2% $116K N/A -$3.6M-5757.8% $64K
Net Income -$92.5M+59.7% -$229.4M-78.4% -$128.6M-204.1% $123.6M+184.1% -$146.9M-40.8% -$104.3M+25.7% -$140.5M-112.0% -$66.3M
EPS (Diluted) $-0.56+60.3% $-1.41-76.2% $-0.80-214.3% $0.70+175.3% $-0.93-40.9% $-0.66+30.5% $-0.95-111.1% $-0.45

IONS Balance Sheet

Metric Q1'26 Q4'25 Q3'25 Q2'25 Q1'25 Q4'24 Q3'24 Q2'24
Total Assets $3.4B-2.1% $3.5B+16.2% $3.0B+1.6% $3.0B+6.1% $2.8B-6.3% $3.0B-2.5% $3.1B+14.5% $2.7B
Current Assets $2.9B-1.8% $3.0B+18.7% $2.5B-2.3% $2.6B+6.5% $2.4B-7.7% $2.6B-3.4% $2.7B+16.5% $2.3B
Cash & Equivalents $173.4M-53.4% $372.3M+10.0% $338.3M+13.8% $297.3M+12.5% $264.2M+9.1% $242.1M-27.7% $334.6M+13.8% $294.0M
Inventory $5.6M-44.7% $10.0M-4.0% $10.5M+23.5% $8.5M-26.3% $11.5M-8.1% $12.5M-56.0% $28.5M-0.9% $28.7M
Accounts Receivable N/A N/A N/A N/A N/A N/A N/A N/A
Goodwill N/A N/A N/A N/A N/A N/A N/A N/A
Total Liabilities $3.0B-2.5% $3.0B+25.7% $2.4B+2.6% $2.4B+0.7% $2.3B-3.2% $2.4B-0.1% $2.4B-0.4% $2.4B
Current Liabilities $716.6M-8.3% $781.6M-13.5% $903.5M+0.7% $897.2M+258.5% $250.3M-19.1% $309.3M+1.6% $304.6M-0.5% $306.2M
Long-Term Debt N/A $1.3B N/A N/A N/A $1.2B N/A N/A
Total Equity $491.4M+0.5% $489.1M-20.9% $618.0M-2.2% $631.7M+32.8% $475.7M-19.1% $588.4M-11.2% $662.5M+151.2% $263.7M
Retained Earnings -$2.7B-3.5% -$2.6B-9.6% -$2.4B-5.7% -$2.3B+5.2% -$2.4B-6.5% -$2.2B-4.9% -$2.1B-7.0% -$2.0B

IONS Cash Flow Statement

Metric Q1'26 Q4'25 Q3'25 Q2'25 Q1'25 Q4'24 Q3'24 Q2'24
Operating Cash Flow -$792.8M-475.7% -$137.7M-4.8% -$131.4M-186.8% $151.3M+200.4% -$150.8M-29.8% -$116.1M-1.0% -$115.0M+4.1% -$119.9M
Capital Expenditures $21.8M+2.2% $21.3M+304.0% $5.3M-57.2% $12.3M-2.2% $12.6M-50.7% $25.5M+181.5% $9.1M+45.3% $6.2M
Free Cash Flow -$814.6M-412.3% -$159.0M-16.3% -$136.7M-198.3% $139.0M+185.1% -$163.4M-15.3% -$141.6M-14.2% -$124.0M+1.6% -$126.1M
Investing Cash Flow $536.8M+228.0% -$419.5M-559.3% $91.3M+176.1% -$120.1M-170.4% $170.5M+149.9% $68.2M+120.0% -$340.8M-645.7% $62.5M
Financing Cash Flow $57.3M-90.3% $591.2M+627.9% $81.2M+6413.1% $1.2M-43.3% $2.2M+105.0% -$44.1M-108.9% $496.0M+19299.6% $2.6M
Dividends Paid N/A N/A N/A N/A N/A N/A N/A N/A
Share Buybacks N/A N/A N/A N/A N/A N/A N/A N/A

IONS Financial Ratios

Metric Q1'26 Q4'25 Q3'25 Q2'25 Q1'25 Q4'24 Q3'24 Q2'24
Gross Margin 98.8% N/A 98.5%-0.6pp 99.1%+0.2pp 98.9% N/A 99.2%+1.0pp 98.2%
Operating Margin -47.7%+57.7pp -105.5%-3.3pp -102.2%-133.1pp 30.9%+142.5pp -111.6%-62.7pp -48.9%+62.2pp -111.1%-81.8pp -29.3%
Net Margin -37.6%+75.2pp -112.8%-30.8pp -82.1%-109.4pp 27.3%+139.0pp -111.6%-65.6pp -46.1%+58.9pp -105.0%-75.6pp -29.4%
Return on Equity -18.8%+28.1pp -46.9%-26.1pp -20.8%-40.4pp 19.6%+50.4pp -30.9%-13.2pp -17.7%+3.5pp -21.2%+3.9pp -25.1%
Return on Assets -2.7%+3.8pp -6.5%-2.3pp -4.2%-8.4pp 4.1%+9.4pp -5.2%-1.8pp -3.5%+1.1pp -4.6%-2.1pp -2.5%
Current Ratio 4.10+0.3 3.83+1.0 2.79-0.1 2.87-6.8 9.66+1.2 8.47-0.4 8.91+1.3 7.61
Debt-to-Equity 6.02+3.3 2.72-1.2 3.91+0.2 3.73-1.2 4.91+2.9 2.04-1.6 3.65-5.6 9.21
FCF Margin -331.0%-252.8pp -78.2%+9.0pp -87.2%-118.0pp 30.8%+154.9pp -124.1%-61.6pp -62.5%+30.2pp -92.7%-36.7pp -56.0%

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Frequently Asked Questions

Ionis Pharmaceuticals (IONS) reported $943.7M in total revenue for fiscal year 2025. This represents a 33.8% change compared to the previous fiscal year. Revenue measures the total income earned from the company's primary business operations before any expenses are deducted.

Ionis Pharmaceuticals (IONS) revenue grew by 33.8% year-over-year, from $705.1M to $943.7M in fiscal year 2025.

No, Ionis Pharmaceuticals (IONS) reported a net income of -$381.4M in fiscal year 2025, with a net profit margin of -40.4%.

Ionis Pharmaceuticals (IONS) reported diluted earnings per share of $-2.38 for fiscal year 2025. This represents a 21.7% change compared to the previous fiscal year. EPS represents the portion of a company's net income allocated to each outstanding share of common stock and is widely used to evaluate profitability on a per-share basis.

Ionis Pharmaceuticals (IONS) had EBITDA of -$369.2M in fiscal year 2025, measuring earnings before interest, taxes, depreciation, and amortization.

As of fiscal year 2025, Ionis Pharmaceuticals (IONS) had $372.3M in cash and equivalents against $1.3B in long-term debt.

Ionis Pharmaceuticals (IONS) had a gross margin of 98.3% in fiscal year 2025, indicating the percentage of revenue retained after direct costs of goods sold.

Ionis Pharmaceuticals (IONS) had an operating margin of -40.5% in fiscal year 2025, reflecting the profitability of core business operations before interest and taxes.

Ionis Pharmaceuticals (IONS) had a net profit margin of -40.4% in fiscal year 2025, representing the share of revenue converted into profit after all expenses.

Ionis Pharmaceuticals (IONS) has a return on equity of -78.0% for fiscal year 2025, measuring how efficiently the company generates profit from shareholder equity.

Ionis Pharmaceuticals (IONS) generated -$320.0M in free cash flow during fiscal year 2025. This represents a 41.4% change compared to the previous fiscal year. Free cash flow represents the cash a company generates after accounting for capital expenditures, and is widely used to assess financial flexibility and shareholder value.

Ionis Pharmaceuticals (IONS) generated -$268.6M in operating cash flow during fiscal year 2025, representing cash generated from core business activities.

Ionis Pharmaceuticals (IONS) had $3.5B in total assets as of fiscal year 2025, including both current and long-term assets.

Ionis Pharmaceuticals (IONS) invested $51.4M in capital expenditures during fiscal year 2025, funding long-term assets and infrastructure.

Ionis Pharmaceuticals (IONS) invested $915.6M in research and development during fiscal year 2025.

Ionis Pharmaceuticals (IONS) had 163M shares outstanding as of fiscal year 2025.

Ionis Pharmaceuticals (IONS) had a current ratio of 3.83 as of fiscal year 2025, which is generally considered healthy.

Ionis Pharmaceuticals (IONS) had a debt-to-equity ratio of 2.72 as of fiscal year 2025, measuring the company's financial leverage by comparing total debt to shareholder equity.

Ionis Pharmaceuticals (IONS) had a return on assets of -10.8% for fiscal year 2025, measuring how efficiently the company uses its assets to generate profit.

Based on fiscal year 2025 data, Ionis Pharmaceuticals (IONS) had $372.3M in cash against an annual operating cash burn of $268.6M. This gives an estimated cash runway of approximately 17 months at the current burn rate. Cash runway measures how long a company can continue operating before running out of cash, assuming no additional funding.

Ionis Pharmaceuticals (IONS) has an Altman Z-Score of 1.72, placing it in the Distress Zone (elevated bankruptcy risk). The Z-Score combines five financial ratios (working capital, retained earnings, EBIT, market capitalization, and revenue relative to total assets) to predict the likelihood of bankruptcy. Scores above 2.99 indicate financial safety while scores below 1.81 suggest financial distress. Learn more in our complete guide to financial health indicators.

Ionis Pharmaceuticals (IONS) has a Piotroski F-Score of 4 out of 9, indicating neutral financial health. The F-Score evaluates nine binary signals across profitability (positive ROA, positive cash flow, improving ROA, earnings quality), leverage (decreasing debt, improving liquidity, no share dilution), and operating efficiency (improving gross margin, improving asset turnover). Scores of 7 to 9 indicate strong and improving fundamentals. Learn more in our complete guide to financial health indicators.

Ionis Pharmaceuticals (IONS) has an earnings quality ratio of 0.70x, considered low quality (accrual-driven). This ratio compares operating cash flow to net income. A ratio above 1.0x means the company generates more cash than its reported earnings, indicating sustainable, cash-backed profits. Ratios below 1.0x suggest earnings rely on accounting accruals rather than actual cash generation. Learn more in our complete guide to financial health indicators.

Ionis Pharmaceuticals (IONS) has an interest coverage ratio of -22.1x, meaning it can struggle to cover its interest obligations. This ratio divides operating income by interest expense. Ratios above 5x indicate strong debt-servicing ability, while ratios below 2x suggest the company may face difficulty meeting interest payments if earnings decline. Learn more in our complete guide to financial health indicators.

Ionis Pharmaceuticals (IONS) scores 56 out of 100 on our Financial Health Score, indicating moderate standing within its emerging companies peer group. The score is a 0-100 composite of six dimensions (Cash Runway, Dilution, R&D Intensity, Revenue Progress, Burn Trend, Balance Sheet), each ranked as a percentile relative to companies in the same scoring family (banks against banks, REITs against REITs, and so on) rather than across all industries. It rates the quality of the business, not whether the stock is fairly priced, and is not financial advice. Learn more in our complete guide to financial health indicators.

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