Item 5. Other Information
Item 5. Other Information
None of our officers or directors adopted , modified or terminated a “Rule 10b5-1 trading arrangement” or “ non-Rule 10b5-1 trading arrangement” as defined in Item 408(c) of Regulation S-K during the three months ended March 31, 2026.
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Item 6. Exhibits
Exhibit Index
Exhibit No.
Description
1.1
Underwriting Agreement, dated April 22, 2026, by and between by and between the Company, Leerink Partners LLC and Barclays Capital Inc., as representatives of the several underwriters named therein (incorporated by reference to Exhibit 1.1 to the Registrant’s Form 8-K filed on April 24, 2026)
3.1
Amended and Restated Certificate of Incorporation, dated October 17, 2017 (incorporated by reference to Exhibit 3.1 to the Registrant’s Form 8-K filed on October 18, 2017)
3.2
Certificate of Amendment to Amended and Restated Certificate of Incorporation regarding a reverse stock split (incorporated by reference to Exhibit 3.1 to the Registrant’s Form 8-K filed on September 13, 2018)
3.3
Certificate of Amendment to Amended and Restated Certificate of Incorporation regarding an increase in authorized shares (incorporated by reference to Exhibit 3.2 to the Registrant’s Form 8-K filed on September 13, 2018)
3.4
Certificate of Amendment to Amended and Restated Certificate of Incorporation regarding an increase in authorized shares (incorporated by reference to Exhibit 3.1 to the Registrant’s Form 8-K filed on April 16, 2026)
3.5
Amended and Restated Bylaws of Altimmune, Inc. (incorporated by reference to Exhibit 3.2 to the Registrant’s Form 8-K filed on October 18, 2017)
4.1
Form of Pre-Funded Warrant (incorporated by reference to Exhibit 4.1 to the Registrant’s Form 8-K filed on January 28, 2026)
4.2
Form of Common Stock Warrant (incorporated by reference to Exhibit 4.1 to the Registrant’s Form 8-K filed on April 24, 2026)
4.3
Form of Pre-Funded Warrant (incorporated by reference to Exhibit 4.2 to the Registrant’s Form 8-K filed on April 24, 2026)
10.1
Form of Securities Purchase Agreement, dated January 27, 2026 (incorporated by (reference to Exhibit 10.1 to the Registrant’s Form 8-K filed on January 28, 2026)
10.2
Placement Agency Agreement, dated January 27, 2026 (incorporated by (reference to Exhibit 10.2 to the Registrant’s Form 8-K filed on January 28, 2026)
31.1 †
Certification of Principal Executive Officer Pursuant to SEC Rule 13a-14(a)/15d-14(a)
31.2 †
Certification of Principal Financial Officer Pursuant to SEC Rule 13a-14(a)/15d-14(a)
32.1 †
Certification Pursuant to Section 1350 of Chapter 63 of Title 18 of the United States Code
32.2 †
Certification Pursuant to Section 1350 of Chapter 63 of Title 18 of the United States Code
101.INS
Inline XBRL Instance Document (the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document)
101.SCH
Inline XBRL Taxonomy Extension Schema Document
101.CAL
Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF
Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB
Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE
Inline XBRL Taxonomy Extension Presentation Linkbase Document
104
Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)
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*
Filed herewith.
†
This certification will not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section. Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except to the extent specifically incorporated by reference into such filing.
§
Certain portions of this exhibit have been omitted in accordance with Item 601(b)(10)(iv) of Regulation S-K.
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SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused the report to be signed on its behalf by the undersigned, thereunto duly authorized.
ALTIMMUNE, INC.
Dated: May 13, 2026
By:
/s/ Jerome Durso
Name:
Jerome Durso
Title:
President and Chief Executive Officer (Principal Executive Officer)
Dated: May 13, 2026
By:
/s/ Gregory Weaver
Name:
Gregory Weaver
Title:
Chief Financial Officer (Principal Financial and Accounting Officer)
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Text extracted from the filing as submitted to EDGAR. Formatting, tables and exhibits are simplified for reading; the original document is authoritative for anything you rely on.