# EDGAR Filing Document

**Accession Number:** 0001301548
**File Stem:** 0000950170-25-093464
**Filing Date:** 2025-7
**Character Count:** 12364
**Document Hash:** d2ed7038d99a590962415f03b88b3a02
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950170-25-093464.hdr.sgml**: 20250702

**ACCESSION NUMBER**: 0000950170-25-093464

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250701

**FILED AS OF DATE**: 20250702

**DATE AS OF CHANGE**: 20250702

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Hruby Dennis E
- **CENTRAL INDEX KEY:** 0001301548

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38436
- **FILM NUMBER:** 251103536

**MAIL ADDRESS:**
- **STREET 1:** C/O SIGA TECHNOLOGIES, INC.
- **STREET 2:** 31 EAST 62ND STREET
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10065
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** SIGA TECHNOLOGIES INC
- **CENTRAL INDEX KEY:** 0001010086
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 133864870
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 31 EAST 62ND STREET
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10065
- **BUSINESS PHONE:** 212-672-9100

**MAIL ADDRESS:**
- **STREET 1:** 31 EAST 62ND STREET
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10065

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SIGA PHARMACEUTICALS INC
- **DATE OF NAME CHANGE:** 19961108

## Ex-24

&nbsp;&nbsp;&nbsp;&nbsp; <br>

#### &nbsp;&nbsp;&nbsp;&nbsp; POWER OF ATTORNEY
&nbsp;&nbsp;&nbsp;&nbsp; Know all by these presents, that the undersigned hereby constitutes and appoints each of Daniel Luckshire, Kevin Buckley and Larry Miller with full power of substitution and re-substitution, signing singly, as the undersigned's true and lawful attorney-in-fact to:

<sup>(1)</sup> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; obtain credentials (including codes or passwords) to enable the undersigned to submit and file documents, forms and information required by Section 16(a) of the Securities Exchange Act of 1934, as amended (the "<u>Exchange Act</u>"), or any rule or regulation of the U.S. Securities and Exchange Commission ("<u>SEC</u>") via the Electronic Data Gathering and Retrieval ("<u>EDGAR</u>") system, including: (i) preparing, executing in the undersigned's name and on the undersigned's behalf and submitting to the SEC a Form ID (and any amendments thereto) or any other documents necessary or appropriate to obtain such credentials and legally binding the undersigned for purpose of the Form ID or such other documents; and (ii) enrolling the undersigned in EDGAR Next or any successor filing system; <br>

<sup>(2)</sup> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; act as an account administrator, in addition to Alexa Calcagnini, for the undersigned's EDGAR account, including: (i) appointing, removing and replacing account administrators, technical administrators, account users and delegated entities; (ii) maintaining the security of the undersigned's EDGAR account, including modification of access codes; (iii) maintaining, modifying and certifying the accuracy of information on the undersigned's EDGAR account dashboard; and (iv) taking any other actions contemplated by Rule 10 of Regulation S-T; <br>

<sup>(3)</sup> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; cause SIGA Technologies, Inc. (the "<u>Company</u>") to accept a delegation of authority from the undersigned's EDGAR account administrators and authorize the Company's EDGAR account administrators pursuant to that delegated entity designation to appoint, remove or replace users for the undersigned's EDGAR account; <br>

<sup>(4)</sup> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; execute for, and on behalf of, the undersigned, in the undersigned's capacity as an officer and/or director of the Company, Form 3, 4 or 5 relating to the Company in accordance with Section 16(a) of the Exchange Act and the rules and regulations promulgated thereunder and Form 144 in accordance with Rule 144 under the Securities Act of 1933, as amended (the "<u>Securities Act</u>"); <br>

<sup>(5)</sup> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; do and perform any and all acts for, and on behalf of, the undersigned that may be necessary or desirable to prepare, complete and execute any such Form 3, 4 or 5 or Form 144 and any amendments thereto or other required reports and timely file such forms or reports with the SEC and any stock exchange or similar authority as considered necessary or advisable under Section 16(a) of the Exchange Act or Rule 144 under the Securities Act; and <br>

------

&nbsp;&nbsp;&nbsp;&nbsp; <br>

<sup>(6)</sup> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; take any other action of any type whatsoever in connection with the foregoing that, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by such attorney-in-fact on behalf of the undersigned, pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may approve in his or her discretion. <br>

&nbsp;&nbsp;&nbsp;&nbsp; The undersigned hereby grants to each such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be done by virtue of this Power of Attorney and the rights and powers herein granted. The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not assuming, nor is the Company assuming, any of the undersigned's responsibilities to comply with Section 16 of the Securities Exchange Act of 1934.

&nbsp;&nbsp;&nbsp;&nbsp; This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file such documents with respect to holdings of and transactions in securities issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to the foregoing attorneys-in-fact.

&nbsp;&nbsp;&nbsp;&nbsp; IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 24th day of June, 2025.

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; By:  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <u>/s/ Dennis Hruby</u>  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Name: <br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Dennis Hruby  |

---

&nbsp;&nbsp;&nbsp;&nbsp; <br>

&nbsp;&nbsp;&nbsp;&nbsp; <br>

&nbsp;&nbsp;&nbsp;&nbsp; <br>

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Hruby Dennis E<br><sub>(Last) (First) (Middle)</sub><br>C/O SIGA TECHNOLOGIES, INC.<br>31 EAST 62ND STREET<br><sub>(Street)</sub><br>NEW YORK, NY 10065<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-07-01 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_EVP & Chief Scientific Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>SIGA TECHNOLOGIES INC [ SIGA ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock, par value $.0001 per share | 2025-07-01 |  | M |  | 32258 | A | $0 | 201514 | D |  |
| Common Stock, par value $.0001 per share | 2025-07-01 |  | F |  | 10467<sup>(1)</sup> | D | $6.49 | 191047 | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Restricted Stock Units | <sup>(2)</sup> | 2025-07-01 |  | M |  |  | 32258 | <sup>(2)</sup> | <sup>(2)</sup> | Common Stock, par value $.0001 per share | 32258 | $0 | 0 | D |  |

---

### Footnotes:

(1) Represents the withholding by SIGA Technologies, Inc. of shares of Common Stock (based on $6.49 per share, the closing stock price on July 1, 2025) to satisfy tax withholding obligations associated with the vesting of restricted stock units ("RSUs") and the consequent issuance of Common Stock.

(2) RSUs represent contingent rights to receive Common Stock on a one-for-one basis. The RSUs were granted on May 11, 2023 and vested over two years, with the first 1/2 of such RSUs vesting on July 1, 2024 and the remaining 1/2 of such RSUs vesting on July 1, 2025.

**Signature:** /s/ Larry R. Miller, as Attorney-in-Fact  
**Date:** 2025-07-02

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**