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Altimmune Financials

ALT
Source SEC Filings (10-K/10-Q) Updated Dec 31, 2025 Currency USD FYE December

This page shows Altimmune (ALT) financial statements, including the income statement, balance sheet, cash flow statement, and key financial ratios. View 16 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).

Financial Health Signals

Profitability Growth Leverage Liquidity Cash Flow Returns 50 / 100
Financial Profile 50/100

Based on FY2025 annual data. Scores normalized against common benchmarks. How we calculate these scores

Profitability
0

Altimmune has an operating margin of -230461.0%, meaning the company retains $-230461 of operating profit per $100 of revenue. This below-average margin results in a low score of 0/100, suggesting thin profitability after operating expenses. This is up from -515860.0% the prior year.

Growth
100

Altimmune's revenue surged 105.0% year-over-year to $41K, reflecting rapid business expansion. This strong growth earns a score of 100/100.

Leverage
99

Altimmune carries a low D/E ratio of 0.15, meaning only $0.15 of long-term debt for every $1 of shareholders' equity. This conservative leverage earns a score of 99/100, indicating a strong balance sheet with room for future borrowing.

Liquidity
100

With a current ratio of 18.55, Altimmune holds $18.55 in current assets for every $1 of short-term obligations. This comfortable liquidity earns a score of 100/100.

Cash Flow
0

While Altimmune generated -$67.5M in operating cash flow, capex of $11K consumed most of it, leaving -$67.5M in free cash flow. This results in a low score of 0/100, reflecting heavy capital investment rather than weak cash generation.

Returns
0

Altimmune generates a -39.2% ROE, indicating limited profit relative to shareholders' investment. This results in a returns score of 0/100. This is up from -77.0% the prior year.

Piotroski F-Score Neutral
4/9

Altimmune passes 4 of 9 financial strength tests. 2 of 4 profitability signals pass, 1 of 3 leverage/liquidity signals pass, both operating efficiency signals pass.

Earnings Quality Low Quality
0.77x

For every $1 of reported earnings, Altimmune generates $0.77 in operating cash flow (-$67.5M OCF vs -$88.1M 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
-57.8x

Altimmune earns $-57.8 in operating income for every $1 of interest expense (-$94.5M vs $1.6M). 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
$41K
YoY+105.0%
5Y CAGR-65.3%

Altimmune generated $41K in revenue in fiscal year 2025. This represents an increase of 105.0% from the prior year.

EBITDA
-$94.4M
YoY+8.3%

Altimmune's EBITDA was -$94.4M in fiscal year 2025, measuring earnings before interest, taxes, depreciation, and amortization. This represents an increase of 8.3% from the prior year.

Net Income
-$88.1M
YoY+7.3%

Altimmune reported -$88.1M in net income in fiscal year 2025. This represents an increase of 7.3% from the prior year.

EPS (Diluted)
$-1.00
YoY+25.4%

Altimmune earned $-1.00 per diluted share (EPS) in fiscal year 2025. This represents an increase of 25.4% from the prior year.

Cash & Balance Sheet

Free Cash Flow
-$67.5M

Altimmune generated -$67.5M in free cash flow in fiscal year 2025, representing cash available after capex.

Cash & Debt
$43.8M
YoY+18.5%
5Y CAGR-17.7%
10Y CAGR+10.9%

Altimmune held $43.8M in cash against $34.3M in long-term debt as of fiscal year 2025.

Dividends Per Share
N/A
Shares Outstanding
111M
YoY+53.3%
5Y CAGR+24.5%

Altimmune had 111M shares outstanding in fiscal year 2025. This represents an increase of 53.3% from the prior year.

Margins & Returns

Gross Margin
N/A
Operating Margin
-230461.0%
YoY+285399.0pp
5Y CAGR-229791.5pp

Altimmune's operating margin was -230461.0% in fiscal year 2025, reflecting core business profitability. This is up 285399.0 percentage points from the prior year.

Net Margin
-214861.0%
YoY+260434.0pp
5Y CAGR-214261.8pp

Altimmune's net profit margin was -214861.0% in fiscal year 2025, showing the share of revenue converted to profit. This is up 260434.0 percentage points from the prior year.

Return on Equity
-39.2%
YoY+37.8pp
5Y CAGR-17.5pp
10Y CAGR-31.2pp

Altimmune's ROE was -39.2% in fiscal year 2025, measuring profit generated per dollar of shareholder equity. This is up 37.8 percentage points from the prior year.

Capital Allocation

R&D Spending
$66.4M
YoY-19.2%
5Y CAGR+5.9%
10Y CAGR+29.2%

Altimmune invested $66.4M in research and development in fiscal year 2025. This represents a decrease of 19.2% from the prior year.

Share Buybacks
N/A
Capital Expenditures
$11K
5Y CAGR-44.2%
10Y CAGR-18.6%

Altimmune invested $11K in capex in fiscal year 2025, funding long-term assets and infrastructure.

ALT Income Statement

Metric Q4'25 Q3'25 Q2'25 Q1'25 Q4'24 Q3'24 Q2'24 Q1'24
Revenue $26K+420.0% $5K0.0% $5K0.0% $5K0.0% $5K0.0% $5K0.0% $5K0.0% $5K
Cost of Revenue N/A N/A N/A N/A N/A N/A N/A N/A
Gross Profit N/A N/A N/A N/A N/A N/A N/A N/A
R&D Expenses $18.4M+23.1% $15.0M-13.2% $17.2M+8.9% $15.8M-20.0% $19.8M-0.1% $19.8M-6.4% $21.2M-1.5% $21.5M
SG&A Expenses $10.5M+78.0% $5.9M+3.7% $5.7M-5.0% $6.0M+17.7% $5.1M+2.4% $5.0M-11.2% $5.6M+5.3% $5.3M
Operating Income -$28.9M-38.5% -$20.9M+9.0% -$22.9M-5.1% -$21.8M+12.3% -$24.9M-0.4% -$24.8M+7.4% -$26.7M+0.2% -$26.8M
Interest Expense $876K+77.0% $495K+87.5% $264K+26300.0% $1K0.0% $1K-83.3% $6K+500.0% $1K0.0% $1K
Income Tax N/A N/A N/A -$681K N/A $0 $0 $0
Net Income -$27.4M-43.9% -$19.0M+14.1% -$22.1M-13.1% -$19.6M+15.6% -$23.2M-1.5% -$22.8M+7.3% -$24.6M-1.0% -$24.4M
EPS (Diluted) N/A $-0.21+22.2% $-0.27-3.8% $-0.26 N/A $-0.32+8.6% $-0.35-2.9% $-0.34

ALT Balance Sheet

Metric Q4'25 Q3'25 Q2'25 Q1'25 Q4'24 Q3'24 Q2'24 Q1'24
Total Assets $279.9M+28.1% $218.4M+14.8% $190.3M+21.0% $157.3M+12.9% $139.3M-5.8% $147.9M-14.7% $173.3M-8.0% $188.4M
Current Assets $278.2M+28.4% $216.6M+15.0% $188.4M+21.4% $155.3M+13.1% $137.3M-5.8% $145.8M-14.9% $171.2M-8.7% $187.5M
Cash & Equivalents $43.8M-28.5% $61.2M-66.6% $183.1M+272.9% $49.1M+33.0% $36.9M+17.3% $31.5M-44.9% $57.1M-27.7% $79.0M
Inventory N/A N/A N/A N/A N/A N/A N/A N/A
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 $55.0M+67.6% $32.8M+13.3% $29.0M+91.9% $15.1M-4.4% $15.8M+9.0% $14.5M-30.4% $20.8M+35.0% $15.4M
Current Liabilities $15.0M+19.0% $12.6M+36.7% $9.2M-5.9% $9.8M-6.4% $10.5M+21.2% $8.6M-43.0% $15.2M+33.7% $11.3M
Long-Term Debt $34.3M+137.4% $14.4M+0.8% $14.3M N/A N/A N/A N/A N/A
Total Equity $224.9M+21.2% $185.6M+15.0% $161.4M+13.5% $142.2M+15.1% $123.5M-7.4% $133.4M-12.6% $152.5M-11.8% $172.9M
Retained Earnings -$649.5M-4.4% -$622.1M-3.2% -$603.1M-3.8% -$581.0M-3.5% -$561.4M-4.3% -$538.2M-4.4% -$515.4M-5.0% -$490.7M

ALT Cash Flow Statement

Metric Q4'25 Q3'25 Q2'25 Q1'25 Q4'24 Q3'24 Q2'24 Q1'24
Operating Cash Flow -$19.4M-63.5% -$11.9M+38.5% -$19.4M-14.9% -$16.8M+7.8% -$18.3M+32.6% -$27.1M-49.8% -$18.1M-10.7% -$16.4M
Capital Expenditures $1K $0 N/A N/A N/A N/A N/A N/A
Free Cash Flow -$19.4M-63.5% -$11.9M N/A N/A N/A N/A N/A N/A
Investing Cash Flow -$79.2M+47.0% -$149.3M-247.7% $101.1M+2082.1% -$5.1M-137.4% $13.6M+1036.9% $1.2M+132.4% -$3.7M+90.6% -$39.5M
Financing Cash Flow $81.1M+106.2% $39.3M-24.7% $52.2M+53.1% $34.1M+238.3% $10.1M+3691.4% $266K+678.3% -$46K+82.4% -$261K
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

ALT Financial Ratios

Metric Q4'25 Q3'25 Q2'25 Q1'25 Q4'24 Q3'24 Q2'24 Q1'24
Gross Margin N/A N/A N/A N/A N/A N/A N/A N/A
Operating Margin -111126.9%+306053.1pp -417180.0%+41260.0pp -458440.0%-22140.0pp -436300.0%+61020.0pp -497320.0%-1980.0pp -495340.0%+39560.0pp -534900.0%+980.0pp -535880.0%
Net Margin -105223.1%+275056.9pp -380280.0%+62640.0pp -442920.0%-51420.0pp -391500.0%+72100.0pp -463600.0%-6700.0pp -456900.0%+35900.0pp -492800.0%-4920.0pp -487880.0%
Return on Equity -12.2%-1.9pp -10.2%+3.5pp -13.7%+0.1pp -13.8%+5.0pp -18.8%-1.6pp -17.1%-1.0pp -16.2%-2.0pp -14.1%
Return on Assets -9.8%-1.1pp -8.7%+2.9pp -11.6%+0.8pp -12.4%+4.2pp -16.6%-1.2pp -15.4%-1.2pp -14.2%-1.3pp -13.0%
Current Ratio 18.55+1.4 17.18-3.3 20.44+4.6 15.85+2.7 13.11-3.8 16.87+5.6 11.30-5.3 16.55
Debt-to-Equity 0.15+0.1 0.08-0.0 0.09-0.0 0.11-0.0 0.13+0.0 0.11-0.0 0.14+0.0 0.09
FCF Margin -74803.9%+163136.1pp -237940.0% N/A N/A N/A N/A N/A N/A

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Frequently Asked Questions

Altimmune (ALT) reported $41K in total revenue for fiscal year 2025. This represents a 105.0% 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.

Altimmune (ALT) revenue grew by 105% year-over-year, from $20K to $41K in fiscal year 2025.

No, Altimmune (ALT) reported a net income of -$88.1M in fiscal year 2025, with a net profit margin of -214861.0%.

Altimmune (ALT) reported diluted earnings per share of $-1.00 for fiscal year 2025. This represents a 25.4% 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.

Altimmune (ALT) had EBITDA of -$94.4M in fiscal year 2025, measuring earnings before interest, taxes, depreciation, and amortization.

As of fiscal year 2025, Altimmune (ALT) had $43.8M in cash and equivalents against $34.3M in long-term debt.

Altimmune (ALT) had an operating margin of -230461.0% in fiscal year 2025, reflecting the profitability of core business operations before interest and taxes.

Altimmune (ALT) had a net profit margin of -214861.0% in fiscal year 2025, representing the share of revenue converted into profit after all expenses.

Altimmune (ALT) has a return on equity of -39.2% for fiscal year 2025, measuring how efficiently the company generates profit from shareholder equity.

Altimmune (ALT) generated -$67.5M in free cash flow during fiscal year 2025. 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.

Altimmune (ALT) generated -$67.5M in operating cash flow during fiscal year 2025, representing cash generated from core business activities.

Altimmune (ALT) had $279.9M in total assets as of fiscal year 2025, including both current and long-term assets.

Altimmune (ALT) invested $11K in capital expenditures during fiscal year 2025, funding long-term assets and infrastructure.

Altimmune (ALT) invested $66.4M in research and development during fiscal year 2025.

Altimmune (ALT) had 111M shares outstanding as of fiscal year 2025.

Altimmune (ALT) had a current ratio of 18.55 as of fiscal year 2025, which is generally considered healthy.

Altimmune (ALT) had a debt-to-equity ratio of 0.15 as of fiscal year 2025, measuring the company's financial leverage by comparing total debt to shareholder equity.

Altimmune (ALT) had a return on assets of -31.5% for fiscal year 2025, measuring how efficiently the company uses its assets to generate profit.

Based on fiscal year 2025 data, Altimmune (ALT) had $43.8M in cash against an annual operating cash burn of $67.5M. This gives an estimated cash runway of approximately 8 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.

Altimmune (ALT) 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 7–9 indicate strong and improving fundamentals. Learn more in our complete guide to financial health indicators.

Altimmune (ALT) has an earnings quality ratio of 0.77x, 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.

Altimmune (ALT) has an interest coverage ratio of -57.8x, 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.

Altimmune (ALT) scores 50 out of 100 on our Financial Profile, indicating moderate overall financial health. This composite score evaluates six dimensions: profitability (operating margin), revenue growth, leverage (debt-to-equity), liquidity (current ratio), cash flow quality (free cash flow margin), and shareholder returns (return on equity). Each dimension is normalized against standard financial benchmarks. Learn more in our complete guide to financial health indicators.

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