| | | | | | | | | | | | | | | | | | | | | | |
Ownership Document
|
| Schema Version: X0305 |
| Document Type: 4 |
| Period of Report: 5/23/12 |
| Not Subject to Section 16: 0 |
| Issuer: |
| Issuer CIK: 1010086 |
| Issuer Name: SIGA TECHNOLOGIES INC |
| Issuer Trading Symbol: SIGA |
| Reporting Owner: |
| Reporting Owner ID: |
| | Owner CIK: 1494422 |
| | Owner Name: STERN ANDREW L |
| Reporting Owner Address: |
| | Owner Street 1: C/O SIGA TECHNOLOGIES, INC. |
| | Owner Street 2: 35 EAST 62ND STREET |
| | Owner City: NEW YORK |
| | Owner State: NY |
| | Owner ZIP Code: 10065 |
| | Owner State Description: |
| Reporting Owner Relationship: |
| | Is Director? Yes |
| | Is Officer? No |
| | Is Ten Percent Owner? No |
| | Is Other? No |
| | Officer Title: |
| | Other Text: |
| Derivative Table: |
| Derivative Transaction: |
| | Security Title: |
| | | Value: Restricted Stock Units |
| | Conversion or Exercise Price: |
| | | Footnote ID: F1 |
| | Transaction Date: |
| | | Value: 5/23/12 |
| | Deemed Execution Date: |
| | Transaction Coding: |
| | | Transaction Form Type: 4 |
| | | Transaction Code: A |
| | | Equity Swap Involved? No |
| | Transaction Timeliness: |
| | Transaction Amounts: |
| | | Transaction Shares: |
| Value: 15,000 |
| | | Transaction Price Per Share: |
| Value: 0 |
| | | Transaction Acquired-Disposed Code: |
| Value: A |
| | Exercise Date: |
| | | Footnote ID: F2 |
| | Expiration Date: |
| | | Footnote ID: F2 |
| | Underlying Security: |
| | | Underlying Security Title: |
| Value: Common Stock, par value $.0001 per share |
| | | Underlying Security Shares: |
| Value: 15,000 |
| | Post-Transaction Amounts: |
| | | Shares Owned Following Transaction: |
| Value: 15,000 |
| | Ownership Nature: |
| | | Direct or Indirect Ownership: |
| Value: D |
| Footnotes: |
| Footnote - F1: Each restricted stock unit ("RSU") converts into one share of common stock of SIGA Technologies, Inc. on a one for one basis. |
| Footnote - F2: The RSUs vest on the first anniversary of the grant date. |
| Owner Signature: |
| Signature Name: /s/ Andrew L. Stern |
| Signature Date: 5/25/12 |
