What is Altimmune's shares (basic)?

Altimmune (ALT) reported shares (basic) of 124.5M in Q1 2026.

How has Altimmune's shares (basic) changed year-over-year?

Altimmune's shares (basic) increased by 64.7% year-over-year, from 75.5M to 124.5M.

What is the long-term trend for Altimmune's shares (basic)?

Over 4 years (2021 to 2025), Altimmune's shares (basic) has grown at a 19.7% compound annual growth rate (CAGR), from 162.9M to 334.5M.

What does shares (basic) mean?

The time-weighted average number of common shares outstanding during the period, used as the denominator for basic EPS calculations.

Altimmune ALT Shares (Basic)

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29M+3.4%

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81.3M+2.9%

Other financials

Income statement

See full

Revenue$26.0K+420%

Operating income-$24.2M-11.1%

Net income-$22.6M-15.3%

EPS (diluted)-$0.18+30.8%

Balance sheet

See full

Cash & equivalents$97.6M+98.7%

Total debt$34.8M+14,092%

Total equity$284.0M+99.8%

Total assets$335.6M+113%

Cash flow

See full

Operating cash flow-$20.9M-24.4%

CapEx$21.0K—

Free cash flow-$21.0M—

Valuation

See full

Market cap$558.14M-2.1%

Enterprise value$495.27M-5.0%

P/S13,613.2×-24,380×

Profitability

See full

Operating margin-230,461%-82,087pp

Net margin-214,861%-76,057pp

FCF margin-17,806.8%-110,030pp

Returns & leverage

See full

Return on equity-42.7%-8.7pp

Debt / equity0.1×+0.1×

Current ratio29.6×+13.7×

Where this comes from

Reported directly by Altimmune in its filing.

Tagged under the XBRL concept us-gaap:WeightedAverageNumberOfSharesOutstandingBasic.

The official record: Altimmune’s 10-Q, filed May 13, 2026, on SEC EDGAR. View the filing →

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Questions, answered.

What is Altimmune's shares (basic)?: Altimmune (ALT) reported shares (basic) of 124.5M in Q1 2026.
How has Altimmune's shares (basic) changed year-over-year?: Altimmune's shares (basic) increased by 64.7% year-over-year, from 75.5M to 124.5M.
What is the long-term trend for Altimmune's shares (basic)?: Over 4 years (2021 to 2025), Altimmune's shares (basic) has grown at a 19.7% compound annual growth rate (CAGR), from 162.9M to 334.5M.
What does shares (basic) mean?: The time-weighted average number of common shares outstanding during the period, used as the denominator for basic EPS calculations.