SIGA TECHNOLOGIES INC — Proxy Solicitation & Information Statement 2025

Apr 28, 2025

DEFA14A 1 ny20044196x3_defa14a.htm DEFA14A Licensed to: Broadridge Financial Solution Inc. Document created using Broadridge PROfile 25.3.2.5298 Copyright 1995 - 2025 Broadridge Begin Page 1

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE

SECURITIES EXCHANGE ACT OF 1934

Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐	​	​	Preliminary Proxy Statement
☐	​	​	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☐	​	​	Definitive Proxy Statement
☒	​	​	Definitive Additional Materials
☐	​	​	Soliciting Material under §240.14a-2

SIGA Technologies, Inc.

(Name of Registrant as Specified In Its Charter)

Payment of Filing Fee (Check all boxes that apply):

☒	​	​	No fee required
☐	​	​	Fee paid previously with preliminary materials
☐	​	​	Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

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