Common Stock, Shares, Issued of Spero Therapeutics, Inc. from 31 Dec 2016 to 30 Sep 2025

Taxonomy & unit
us-gaap: shares
Description
Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.
Summary
Spero Therapeutics, Inc. quarterly Common Stock, Shares, Issued in shares history and change rate from 31 Dec 2016 to 30 Sep 2025.
  • Spero Therapeutics, Inc. Common Stock, Shares, Issued for the quarter ending 30 Sep 2025 was 56,311,795, a 3.7% increase year-over-year.
Source SEC data
View on sec.gov
Common Stock, Shares, Issued, Quarterly (shares)
Common Stock, Shares, Issued, YoY Quarterly Change (%)

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

Period Value YoY Chg Change % Date Report Filed Fiscal Year Fiscal Period
Q3 2025 56,311,795 +1,997,380 +3.7% 30 Sep 2025 10-Q 13 Nov 2025 2025 Q3
Q2 2025 56,187,308 +2,178,169 +4% 30 Jun 2025 10-Q 12 Aug 2025 2025 Q2
Q1 2025 55,900,641 +2,031,502 +3.8% 31 Mar 2025 10-Q 13 May 2025 2025 Q1
Q4 2024 54,593,527 +1,593,847 +3% 31 Dec 2024 10-Q 13 Nov 2025 2025 Q3
Q3 2024 54,314,415 +1,315,098 +2.5% 30 Sep 2024 10-Q 14 Nov 2024 2024 Q3
Q2 2024 54,009,139 +1,437,326 +2.7% 30 Jun 2024 10-Q 05 Aug 2024 2024 Q2
Q1 2024 53,869,139 +1,297,326 +2.5% 31 Mar 2024 10-Q 15 May 2024 2024 Q1
Q4 2023 52,999,680 +543,485 +1% 31 Dec 2023 10-K 27 Mar 2025 2024 FY
Q3 2023 52,999,317 +10,142,694 +24% 30 Sep 2023 10-Q 13 Nov 2023 2023 Q3
Q2 2023 52,571,813 +17,504,336 +50% 30 Jun 2023 10-Q 10 Aug 2023 2023 Q2
Q1 2023 52,571,813 31 Mar 2023 10-Q 11 May 2023 2023 Q1
Q4 2022 52,456,195 +20,062,457 +62% 31 Dec 2022 10-K 13 Mar 2024 2023 FY
Q3 2022 42,856,623 +10,636,272 +33% 30 Sep 2022 10-Q 14 Nov 2022 2022 Q3
Q2 2022 35,067,477 +5,368,330 +18% 30 Jun 2022 10-Q 10 Aug 2022 2022 Q2
Q4 2021 32,393,738 +3,133,491 +11% 31 Dec 2021 10-K 30 Mar 2023 2022 FY
Q3 2021 32,220,351 +6,250,246 +24% 30 Sep 2021 10-Q 10 Nov 2021 2021 Q3
Q2 2021 29,699,147 +8,685,052 +41% 30 Jun 2021 10-Q 05 Aug 2021 2021 Q2
Q1 2021 29,663,946 +9,335,606 +46% 31 Mar 2021 10-Q 06 May 2021 2021 Q1
Q4 2020 29,260,247 +10,069,552 +52% 31 Dec 2020 10-K 31 Mar 2022 2021 FY
Q3 2020 25,970,105 +7,307,075 +39% 30 Sep 2020 10-Q 05 Nov 2020 2020 Q3
Q2 2020 21,014,095 +2,363,720 +13% 30 Jun 2020 10-Q 06 Aug 2020 2020 Q2
Q1 2020 20,328,340 +2,993,274 +17% 31 Mar 2020 10-Q 08 May 2020 2020 Q1
Q4 2019 19,190,695 +1,984,733 +12% 31 Dec 2019 10-K 11 Mar 2021 2020 FY
Q3 2019 18,663,030 +480,536 +2.6% 30 Sep 2019 10-Q 04 Nov 2019 2019 Q3
Q2 2019 18,650,375 +4,272,622 +30% 30 Jun 2019 10-Q 08 Aug 2019 2019 Q2
Q1 2019 17,335,066 +2,965,884 +21% 31 Mar 2019 10-Q 09 May 2019 2019 Q1
Q4 2018 17,205,962 +2,836,780 +20% 31 Dec 2018 10-K 16 Mar 2020 2019 FY
Q3 2018 18,182,494 +17,847,213 +5323% 30 Sep 2018 10-Q 08 Nov 2018 2018 Q3
Q2 2018 14,377,753 30 Jun 2018 10-Q 09 Aug 2018 2018 Q2
Q1 2018 14,369,182 31 Mar 2018 10-Q 10 May 2018 2018 Q1
Q4 2017 14,369,182 +14,369,182 31 Dec 2017 10-K 14 Mar 2019 2018 FY
Q3 2017 335,281 30 Sep 2017 10-Q 14 Dec 2017 2017 Q3
Q4 2016 0 31 Dec 2016 10-K 02 Apr 2018 2017 FY
* An asterisk sign (*) next to the value indicates that the value is likely invalid.