Common Stock, Shares, Outstanding of Generation Bio Co. from 31 Dec 2019 to 30 Sep 2025

Taxonomy & unit
us-gaap: shares
Description
Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.
Summary
Generation Bio Co. quarterly Common Stock, Shares, Outstanding in shares history and change rate from 31 Dec 2019 to 30 Sep 2025.
  • Generation Bio Co. Common Stock, Shares, Outstanding for the quarter ending 30 Sep 2025 was 6,735,676, a 90% decline year-over-year.
Source SEC data
View on sec.gov
Common Stock, Shares, Outstanding, Quarterly (shares)
Common Stock, Shares, Outstanding, YoY Quarterly Change (%)

Generation Bio Co. Quarterly Common Stock, Shares, Outstanding (shares)

Period Value YoY Chg Change % Date Report Filed Fiscal Year Fiscal Period
Q3 2025 6,735,676 -60,017,832 -90% 30 Sep 2025 10-Q 05 Nov 2025 2025 Q3
Q2 2025 6,733,413 -59,969,321 -90% 30 Jun 2025 10-Q 12 Aug 2025 2025 Q2
Q1 2025 67,008,511 +529,411 +0.8% 31 Mar 2025 10-Q 07 May 2025 2025 Q1
Q4 2024 6,697,197 -59,508,353 -90% 31 Dec 2024 10-Q 05 Nov 2025 2025 Q3
Q3 2024 66,753,508 +825,552 +1.3% 30 Sep 2024 10-Q 06 Nov 2024 2024 Q3
Q2 2024 66,702,734 +918,484 +1.4% 30 Jun 2024 10-Q 07 Aug 2024 2024 Q2
Q1 2024 66,479,100 +943,437 +1.4% 31 Mar 2024 10-Q 13 May 2024 2024 Q1
Q4 2023 66,205,550 +6,700,113 +11% 31 Dec 2023 10-K 13 Mar 2025 2024 FY
Q3 2023 65,927,956 +6,652,787 +11% 30 Sep 2023 10-Q 09 Nov 2023 2023 Q3
Q2 2023 65,784,250 +8,187,109 +14% 30 Jun 2023 10-Q 02 Aug 2023 2023 Q2
Q1 2023 65,535,663 +8,531,535 +15% 31 Mar 2023 10-Q 10 May 2023 2023 Q1
Q4 2022 59,505,437 +2,535,819 +4.5% 31 Dec 2022 10-K 06 Mar 2024 2023 FY
Q3 2022 59,275,169 +2,542,704 +4.5% 30 Sep 2022 10-Q 03 Nov 2022 2022 Q3
Q2 2022 57,597,141 +1,165,628 +2.1% 30 Jun 2022 10-Q 04 Aug 2022 2022 Q2
Q1 2022 57,004,128 +909,599 +1.6% 31 Mar 2022 10-Q 05 May 2022 2022 Q1
Q4 2021 56,969,618 +10,677,741 +23% 31 Dec 2021 10-K 23 Feb 2023 2022 FY
Q3 2021 56,732,465 +11,172,708 +25% 30 Sep 2021 10-Q 10 Nov 2021 2021 Q3
Q2 2021 56,431,513 +11,403,489 +25% 30 Jun 2021 10-Q 11 Aug 2021 2021 Q2
Q1 2021 56,094,529 31 Mar 2021 10-Q 12 May 2021 2021 Q1
Q4 2020 46,291,877 +41,020,988 +778% 31 Dec 2020 10-K 24 Feb 2022 2021 FY
Q3 2020 45,559,757 30 Sep 2020 10-Q 10 Nov 2020 2020 Q3
Q2 2020 45,028,024 30 Jun 2020 10-Q 11 Aug 2020 2020 Q2
Q4 2019 5,270,889 31 Dec 2019 10-K 18 Mar 2021 2020 FY
* An asterisk sign (*) next to the value indicates that the value is likely invalid.