Entity Common Stock, Shares Outstanding of Spero Therapeutics, Inc. from 30 Nov 2017 to 06 Nov 2025

Taxonomy & unit
dei: shares
Description
Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.
Summary
Spero Therapeutics, Inc. quarterly Entity Common Stock, Shares Outstanding in shares history and change rate from 30 Nov 2017 to 06 Nov 2025.
  • Spero Therapeutics, Inc. Entity Common Stock, Shares Outstanding for the quarter ending 06 Nov 2025 was 56,339,295, a 3.3% increase year-over-year.
Source SEC data
View on sec.gov
Entity Common Stock, Shares Outstanding, Quarterly (shares)
Entity Common Stock, Shares Outstanding, YoY Quarterly Change (%)

Spero Therapeutics, Inc. Quarterly Entity Common Stock, Shares Outstanding (shares)

Period Value YoY Chg Change % Date Report Filed Fiscal Year Fiscal Period
Q3 2025 56,339,295 +1,821,130 +3.3% 06 Nov 2025 10-Q 13 Nov 2025 2025 Q3
Q2 2025 56,275,225 +2,226,086 +4.1% 05 Aug 2025 10-Q 12 Aug 2025 2025 Q2
Q1 2025 55,900,641 +2,031,502 +3.8% 21 Mar 2025 10-K 27 Mar 2025 2024 FY
Q3 2024 54,518,165 +1,518,848 +2.9% 06 Nov 2024 10-Q 14 Nov 2024 2024 Q3
Q2 2024 54,049,139 +1,352,850 +2.6% 01 Aug 2024 10-Q 05 Aug 2024 2024 Q2
Q1 2024 53,869,139 +1,297,326 +2.5% 08 Mar 2024 10-K 13 Mar 2024 2023 FY
Q3 2023 52,999,317 +1,223,264 +2.4% 06 Nov 2023 10-Q 13 Nov 2023 2023 Q3
Q2 2023 52,696,289 +17,628,812 +50% 04 Aug 2023 10-Q 10 Aug 2023 2023 Q2
Q1 2023 52,571,813 +19,816,254 +60% 01 Mar 2023 10-K 30 Mar 2023 2022 FY
Q3 2022 51,776,053 +19,452,436 +60% 10 Nov 2022 10-Q 14 Nov 2022 2022 Q3
Q2 2022 35,067,477 +2,920,630 +9.1% 05 Aug 2022 10-Q 10 Aug 2022 2022 Q2
Q1 2022 32,755,559 +3,251,302 +11% 25 Mar 2022 10-K 31 Mar 2022 2021 FY
Q3 2021 32,323,617 +5,136,128 +19% 05 Nov 2021 10-Q 10 Nov 2021 2021 Q3
Q2 2021 32,146,847 +10,994,306 +52% 29 Jul 2021 10-Q 05 Aug 2021 2021 Q2
Q1 2021 29,504,257 +9,175,917 +45% 08 Mar 2021 10-K 11 Mar 2021 2020 FY
Q3 2020 27,187,489 +8,059,343 +42% 29 Oct 2020 10-Q 05 Nov 2020 2020 Q3
Q2 2020 21,152,541 +2,496,341 +13% 30 Jul 2020 10-Q 06 Aug 2020 2020 Q2
Q1 2020 20,328,340 +3,112,364 +18% 09 Mar 2020 10-K 16 Mar 2020 2019 FY
Q3 2019 19,128,146 +940,658 +5.2% 31 Oct 2019 10-Q 04 Nov 2019 2019 Q3
Q2 2019 18,656,200 +487,771 +2.7% 05 Aug 2019 10-Q 08 Aug 2019 2019 Q2
Q1 2019 17,215,976 +2,846,794 +20% 08 Mar 2019 10-K 14 Mar 2019 2018 FY
Q3 2018 18,187,488 05 Nov 2018 10-Q 08 Nov 2018 2018 Q3
Q2 2018 18,168,429 06 Aug 2018 10-Q 09 Aug 2018 2018 Q2
Q1 2018 14,369,182 28 Mar 2018 10-K 02 Apr 2018 2017 FY
Q4 2017 14,369,182 30 Nov 2017 10-Q 14 Dec 2017 2017 Q3
* An asterisk sign (*) next to the value indicates that the value is likely invalid.