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Altimmune, Inc.

For the period ended Dec 31, 2025. Filed Mar 6, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Mar 6, 2026

ALT$2.12+1.9%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Contents

16. Subsequent Events

The Company evaluated subsequent events through the issuance date of the financial statements. During January and February 2026, the Company raised $8.2 million in net proceeds through the issuance of 1,874,597 shares of common stock from the Company’s at-the-market offerings program under the November 2025 Agreement.

On January 27, 2026, the Company entered into a securities purchase agreement with a new fundamental institutional investor pursuant to a registered direct offering under the November 2025 Shelf for the purchase and sale of 12,397,920 shares of its common stock and 4,647,534 pre-funded warrants for net proceeds of approximately $70.4

million. The pre-funded warrants were fully exercised on February 13, 2026, resulting in the issuance of 4,647,534 shares of the Company’s common stock.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.