TickerFacts.

Siga Technologies Inc (SIGA): Shares Outstanding

Annual figures by period end, from SEC filings.

Restated years: each year's figure is from the latest filing that reports it. The company later restated the year ended 2015-12-31 (for example after a spin-off or a discontinued operation), while the year before it was last reported on the old basis. Changes across those points are marked n/c (not comparable), and growth rates are not computed across them.

71.61M
As of 2025-12-31
71.84M
As of 2026-06-30
-0.5%
3-year compound annual growth
-1.5%
5-year compound annual growth
-0.9%
10-year compound annual growth
81.27M2010-12-31: 49.02M2011-12-31: 51.64M2012-12-31: 51.64M2013-12-31: 53.11M2014-12-31: 53.50M2015-12-31: 78.69M2016-12-31: 79.04M2017-12-31: 80.76M2018-12-31: 80.76M2019-12-31: 81.27M2020-12-31: 77.20M2021-12-31: 73.54M2022-12-31: 72.68M2023-12-31: 71.09M2024-12-31: 71.40M2025-12-31: 71.61M71.61M
2010-12-31 Shares Outstanding (shares) 2025-12-31
Period endedShares OutstandingChange YoYSource filing
2025-12-3171.61M+0.3%2026-03-10, Balance as of period end
2024-12-3171.40M+0.4%2026-03-10, Balance as of period end
2023-12-3171.09M-2.2%2025-03-11, Balance as of period end
2022-12-3172.68M-1.2%2024-03-12, Balance as of period end
2021-12-3173.54M-4.7%2023-03-02, Balance as of period end
2020-12-3177.20M-5.0%2022-03-03, Balance as of period end
2019-12-3181.27M+0.6%2021-03-04, Balance as of period end
2018-12-3180.76M0.0%2019-03-06, Balance as of period end
2017-12-3180.76M+2.2%2020-03-05, Balance as of period end
2016-12-3179.04M+0.4%2019-03-06, Balance as of period end
2015-12-3178.69Mn/c2018-03-06, Balance as of period end
2014-12-3153.50M+0.7%2016-03-04, Balance as of period end
2013-12-3153.11M+2.8%2015-03-06, Balance as of period end
2012-12-3151.64M0.0%2014-03-10, Balance as of period end
2011-12-3151.64M+5.3%2013-05-15, Balance as of period end
2010-12-3149.02Mn/a2012-03-01, Balance as of period end