TickerFacts.

Insmed Inc (INSM): 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 2012-12-31 (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.

214.26M
As of 2025-12-31
218.28M
As of 2026-06-30
+16.5%
3-year compound annual growth
+15.8%
5-year compound annual growth
+13.2%
10-year compound annual growth
2010-12-31: 15.65M2011-12-31: 24.83M2012-12-31: 31.49M2013-12-31: 39.14M2014-12-31: 49.81M2015-12-31: 61.81M2016-12-31: 62.02M2017-12-31: 76.61M2018-12-31: 77.31M2019-12-31: 89.68M2020-12-31: 102.76M2021-12-31: 118.74M2022-12-31: 135.65M2023-12-31: 147.98M2024-12-31: 179.38M2025-12-31: 214.26M214.26M
2010-12-31 Shares Outstanding (shares) 2025-12-31
Period endedShares OutstandingChange YoYSource filing
2025-12-31214.26M+19.4%2026-02-19, Balance as of period end
2024-12-31179.38M+21.2%2026-02-19, Balance as of period end
2023-12-31147.98M+9.1%2025-02-20, Balance as of period end
2022-12-31135.65M+14.2%2024-02-22, Balance as of period end
2021-12-31118.74M+15.5%2023-02-23, Balance as of period end
2020-12-31102.76M+14.6%2022-02-17, Balance as of period end
2019-12-3189.68M+16.0%2021-02-25, Balance as of period end
2018-12-3177.31M+0.9%2020-02-25, Balance as of period end
2017-12-3176.61M+23.5%2019-02-22, Balance as of period end
2016-12-3162.02M+0.3%2018-02-23, Balance as of period end
2015-12-3161.81M+24.1%2017-02-23, Balance as of period end
2014-12-3149.81M+27.3%2016-02-25, Balance as of period end
2013-12-3139.14M+24.3%2015-02-27, Balance as of period end
2012-12-3131.49Mn/c2014-03-06, Balance as of period end
2011-12-3124.83M+58.6%2013-03-18, Balance as of period end
2010-12-3115.65Mn/a2012-03-13, Balance as of period end