| Date | Press Release |
| 11/05/2020 | SIGA Reports Financial Results for Three and Nine Months Ended September 30, 2020 |
| 08/06/2020 | SIGA Technologies, Inc. Reports Financial Results for Three and Six Months Ended June 30, 2020 |
| 05/06/2020 | SIGA Technologies, Inc. Reports Financial Results for the First Quarter of 2020 |
| 03/05/2020 | SIGA Technologies, Inc. Reports Financial Results for Fiscal Year 2019 |
| 03/20/2018 | SIGA Technologies Announces Relisting on Nasdaq |
| 03/06/2018 | Siga Files latest 10-K for the period ended December 31, 2017 |
| 11/07/2017 | Siga Files latest 10-Q for the period ended September 30, 2017 |
| 08/03/2017 | Siga Files latest 10-Q dated August 3, 2017 |
| 05/04/2017 | Siga Files latest 10-Q dated May 4, 2017 |
| 03/07/2017 | Siga Files latest 10-K dated March 7, 2017 |
| 11/02/2016 | SIGA TECHNOLOGIES INC Files SEC form 10-Q, Quarterly Report - 11/02/2016 |
| 08/08/2016 | SIGA TECHNOLOGIES INC Files SEC form 10-Q, Quarterly Report |
| 05/04/2016 | SIGA TECHNOLOGIES INC Files SEC form 10-Q, Quarterly Report |
| 04/12/2016 | SIGA Emerges from Chapter 11 Bankruptcy Protection |
| 07/31/2014 | Reports Financial Results for the Second Quarter 2014 |
| 05/01/2014 | Reports Financial Results for the First Quarter 2014 |
| 04/29/2014 | To Host Quarterly Business Update Call on May 1, 2014 |
| 11/06/2013 | Reports Financial Results for the Third Quarter 2013 |
| 11/04/2013 | To Host Third Quarter Business Update Call on November 6, 2013 |
| 08/05/2013 | Reports Financial Results for the Second Quarter 2013 |
| 05/15/2013 | Reports Financial Results for the First Quarter 2013 |
| 05/10/2013 | Restatement of Certain Historical Financial Results to Reflect Reclassification of Warrants as a Liability |
| 04/30/2013 | To Host First Quarter Business Update Call on May 6, 2013 |
| 03/06/2013 | Reports Financial Results for the Fourth Quarter and Year Ended 2012 |
| 03/01/2013 | To Host Fourth Quarter and Year End Business Update Call on March 6, 2013 |
| 11/05/2012 | Reports Financial Results for the Third Quarter of 2012 |
| 10/29/2012 | To Host Third Quarter Business Update Call on November 5, 2012 |
| 08/06/2012 | Reports Financial Results for the Second Quarter of 2012 |
| 07/30/2012 | To Host Second Quarter Business Update Call on August 6, 2012 |
| 05/07/2012 | Reports Financial Results for the First Quarter 2012 |
| 04/30/2012 | To Host First Quarter Business Update Call on May 7, 2012 |
| 03/01/2012 | Reports Financial Results for the Fourth Quarter and Year Ended 2011 |
| 02/28/2012 | To Host Fourth Quarter and Year End Business Update Call on March 1, 2012 |
| 11/08/2011 | Reports Financial Results for the Third Quarter of 2011 |
| 11/03/2011 | To Host Quarterly Business Update Call on November 17, 2011 |
| 08/24/2011 | Awarded a $7.7 Million Grant for the Development of Antiviral Drugs for Arenaviruses |
| 07/12/2011 | To Discuss Second Quarter 2011 Results of Operations on August 1, 2011 |
| 05/13/2011 | Awarded U.S. Government Contract Valued at Up to $2.8 Billion |
| 05/05/2011 | Reports Financial Results for the First Quarter 2011 |
| 04/29/2011 | To Discuss First Quarter 2011 Results of Operations on May 5, 2011 |
| 03/09/2011 | Reports Financial Results for the Fourth Quarter and Year Ended 2010 |
| 11/02/2010 | Reports Financial Results for the Third Quarter of 2010 |
| 10/29/2010 | To Discuss Third Quarter Results of Operations on November 2, 2010 |
| 08/05/2010 | Reports Financial Results for the Second Quarter and First Half of 2010 |
| 08/02/2010 | To Discuss Second Quarter Results of Operations on August 5, 2010 |
| 05/04/2010 | Reports Operating Results for the First Quarter of 2010 |
| 03/10/2010 | Reports Financial Results for the Fourth Quarter and Full Year of 2009 |
| 03/05/2010 | To Discuss Fourth Quarter and Year-End 2009 Results of Operations on March 10, 2010 |
| 03/01/2010 | To Participate at RBC Capital Markets and Cowen & Company Healthcare Conferences |
| 02/25/2010 | Awarded a $2.8 Million DoD Contract With Additional Options for the Development of a Broad Spectrum Antiviral Drug |
| 12/14/2009 | Announces Close of $20 Million Common Stock Offering |
| 12/11/2009 | To Hold Conference Call on Monday, December 14 |
| 12/10/2009 | Raises $20.0 Million in a Common Stock Offering |
| 11/09/2009 | Reports Operating Results for the Third Quarter of 2009 |
| 11/02/2009 | To Discuss Third Quarter 2009 Results of Operations on November 9, 2009 |
| 09/03/2009 | Approved for NASDAQ Global Market Listing |
| 08/06/2009 | Reports Operating Results for the Second Quarter of 2009 |
| 07/27/2009 | To Announce Second Quarter 2009 Results of Operations August 6, 2009 |
| 06/26/2009 | To be Added to the Russell 3000(r) and Russell Global(r) Indices |
| 06/05/2009 | To Present At the 2009 Noble Financial Fifth Annual Equity Conference |
| 05/14/2009 | Reports Operating Results for the First Quarter of 2009 |
| 05/08/2009 | To Announce First Quarter 2009 Financial Results May 14, 2009 |
| 03/09/2009 | To Discuss Year-End 2008 Results of Operations On March 12, 2009 |
| 11/10/2008 | Reports Operating Results for the Third Quarter of 2008 |
| 09/03/2008 | Awarded $55 Million by Federal Government to Develop Broader Applications for Its Lead Drug Candidate ST-246 |
| 08/12/2008 | Reports Operating Results for the Second Quarter of 2008 |
| 08/05/2008 | To Announce Second Quarter 2008 Results of Operations on August 12, 2008 |
| 06/23/2008 | Receives $8 Million in Financing Support from MacAndrews & Forbes |
| 05/12/2008 | Reports Operating Results for the First Quarter of 2008 |
| 05/06/2008 | To Announce First Quarter 2008 Results of Operations on May 12, 2008 |
| 02/29/2008 | To Present at Susquehanna's SIGnificant Options in Healthcare Conference |
| 01/07/2008 | To Present at the Annual JPMorgan Healthcare Conference |
| 11/14/2007 | Reports Third Quarter 2007 Results of Operations |
| 11/08/2007 | To Announce Third Quarter 2007 Results of Operations |
| 08/16/2007 | Reports Second Quarter 2007 Results of Operations |
| 08/15/2007 | To Present at the Noble Financial Small Cap Conference |
| 08/13/2007 | To Announce Second Quarter 2007 Results of Operations |
| 06/19/2007 | Selected to Join the Russell Microcap Index |
| 05/08/2007 | Reports First Quarter 2007 Financial Results |
| 04/23/2007 | To Announce First Quarter 2007 Results of Operations |
| 11/10/2006 | Announces $2.3 Million in New Contracts with the U.S. Air Force |
| 10/19/2006 | Announces $9.0 Million Private Placement |
| 10/04/2006 | Terminates Merger Agreement with PharmAthene, Inc. |
| 09/12/2006 | Announces $6.0 Million Grant to Support Its Lassa Fever Antiviral Program |
| 08/28/2006 | Reports on Correspondence from Nasdaq |
| 07/25/2006 | Reports on Correspondence from NASDAQ |
| 06/09/2006 | Signs Definitive Merger Agreement with PharmAthene to Establish Premier Biodefense Company |
| 04/03/2006 | Reports Resignation of Chief Executive Officer |
| 03/14/2006 | PharmAthene and SIGA Announce Plans to Merge to Establish Premier Biodefense Company |
| 02/03/2006 | Reports on Correspondence from NASDAQ |
| 01/05/2006 | Reports on Correspondence With Nasdaq |
| 11/07/2005 | To Present at the Rodman & Renshaw Techvest Healthcare Conference |
| 11/03/2005 | Announces a $2.0 Million Private Placement |
| 11/24/2004 | To Present at The Wall Street Analyst Forum in New York City |
| 08/25/2004 | Announces Receipt of $12 Million in NIH Funding for Biodefense |
| 07/06/2004 | Announces Bernard L. Kasten, M.D. as Chief Executive Officer |
| 06/09/2004 | Announces Agreement with ViroPharma to Purchase Biodefense Assets |