Shares Outstanding (Quarterly) Chart

View Shares Outstanding (Quarterly) for INSM.
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Sep '18
Jan '19
May '19
 
285.00
270.00
255.00
240.00
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Historical Shares Outstanding (Quarterly) Data

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Date Value
June 30, 2026 218.28M
March 31, 2026 216.52M
December 31, 2025 214.26M
September 30, 2025 212.58M
June 30, 2025 211.11M
March 31, 2025 181.90M
December 31, 2024 179.38M
September 30, 2024 178.85M
June 30, 2024 166.67M
March 31, 2024 148.56M
December 31, 2023 147.98M
September 30, 2023 143.05M
June 30, 2023 142.75M
March 31, 2023 136.43M
December 31, 2022 135.65M
September 30, 2022 121.73M
June 30, 2022 119.86M
March 31, 2022 119.35M
December 31, 2021 118.74M
September 30, 2021 118.36M
June 30, 2021 115.24M
March 31, 2021 103.28M
December 31, 2020 102.76M
September 30, 2020 101.80M
June 30, 2020 101.43M
Date Value
March 31, 2020 89.86M
December 31, 2019 89.68M
September 30, 2019 89.31M
June 30, 2019 89.21M
March 31, 2019 77.60M
December 31, 2018 77.31M
September 30, 2018 77.09M
June 30, 2018 77.04M
March 31, 2018 76.62M
December 31, 2017 76.61M
September 30, 2017 76.57M
June 30, 2017 62.38M
March 31, 2017 62.09M
December 31, 2016 62.02M
September 30, 2016 61.88M
June 30, 2016 61.88M
March 31, 2016 61.87M
December 31, 2015 61.81M
September 30, 2015 61.80M
June 30, 2015 61.74M
March 31, 2015 50.00M
December 31, 2014 49.81M
September 30, 2014 49.61M
June 30, 2014 39.28M
March 31, 2014 39.27M

Shares Outstanding Definition

The volume of stock shares issued by the company and in the hands of the public. This number entails how much is being traded in the open market. A decreasing shares outstanding over time may be the result of company buybacks. Companies frequently make stock buybacks and retire those buybacks as treasury stock.

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Shares Outstanding (Quarterly) Range, Past 5 Years

View Shares Outstanding (Quarterly) Range, Past 5 Years
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Median

Shares Outstanding (Quarterly) Benchmarks

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ACADIA Pharmaceuticals, Inc. 172.13M
Alnylam Pharmaceuticals, Inc. 133.73M
Biogen, Inc. 147.70M
Gilead Sciences, Inc. 1.241B
Agios Pharmaceuticals, Inc. 59.60M