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SPRO   Spero Therapeutics, Inc.   |  1701108

Available Fillings Total Fillings:440
Form Type Form Count
8-K 98
UPLOAD 2
10-Q 21
S-8 14
CORRESP 5
8-A12B 1
SC 13D/A 9
CT ORDER 5
SC 13D 2
8-K/A 3
SC 13G 11
DRS 2
DRSLTR 1
ARS 3
10-K 7
S-1/A 2
144 2
SC 13G/A 23
DEFA14A 3
424B5 5
424B4 2
DRS/A 2
4 161
3 30
DEF 14A 8
EFFECT 5
10-K/A 1
S-1 2
PRE 14A 2
D 3
S-3 3
CERTNAS 1
SCHEDULE 13D/A 1
Financials Total:130
Form Type Act Filing Date Report Date Action
8-K 34 04/28/2025 04/22/2025 |    |  
8-K 34 03/27/2025 03/27/2025 |    |  
8-K 34 01/10/2025 01/07/2025 |    |  
8-K 34 10/29/2024 10/29/2024 |    |  
8-K 34 09/10/2024 09/09/2024 |    |  
10-Q 34 08/05/2024 06/30/2024 |    |  
8-K 34 08/05/2024 08/05/2024 |    |  
8-K 34 06/03/2024 05/29/2024 |    |  
10-Q 34 05/15/2024 03/31/2024 |    |  
8-K 34 03/29/2024 03/29/2024 |    |  
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Ipos Total:12
Form Type Act Filing Date Report Date Action
S-3 33 03/15/2024 05/09/2025
CORRESP 03/24/2021 05/09/2025
UPLOAD 03/17/2021 05/09/2025
S-3 33 03/11/2021 05/09/2025
CORRESP 12/07/2018 05/09/2025
S-3 33 12/03/2018 05/09/2025
S-1 33 07/09/2018 05/09/2025
UPLOAD 11/06/2017 05/09/2025
CORRESP 10/30/2017 05/09/2025
CORRESP 10/30/2017 05/09/2025
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Form Type Act Filing Date Report Date Action
4 02/05/2025 02/03/2025
4 02/05/2025 02/03/2025
4 02/05/2025 02/03/2025
4 02/05/2025 02/05/2025
4 11/12/2024 11/07/2024
4 08/06/2024 08/02/2024
4 02/05/2024 02/01/2024
4 02/05/2024 02/02/2024
4 02/05/2024 02/01/2024
4 02/05/2024 02/01/2024
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Form Type Act Filing Date Report Date Action
DEF 14A 34 04/28/2025 06/12/2025
DEF 14A 34 04/16/2024 05/29/2024
SC 13G 34 02/14/2024 05/09/2025
DEF 14A 34 09/01/2023 10/05/2023
DEF 14A 34 08/05/2022 09/15/2022
SC 13G 34 07/08/2022 05/09/2025
SC 13G 34 07/09/2021 05/09/2025
DEF 14A 34 07/06/2021 08/17/2021
SC 13G 34 02/02/2021 05/09/2025
DEF 14A 34 09/30/2020 10/27/2020
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Form Type Act Filing Date Report Date Action
8-K 34 04/28/2025 04/22/2025 |    |  
8-K 34 03/27/2025 03/27/2025 |    |  
8-K 34 01/10/2025 01/07/2025 |    |  
8-K 34 10/29/2024 10/29/2024 |    |  
8-K 34 09/10/2024 09/09/2024 |    |  
8-K 34 08/05/2024 08/05/2024 |    |  
8-K 34 06/03/2024 05/29/2024 |    |  
8-K 34 03/29/2024 03/29/2024 |    |  
8-K 34 03/13/2024 03/13/2024 |    |  
8-K 34 02/09/2024 02/05/2024 |    |  
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Form Type Act Filing Date Report Date Action
DEF 14A 34 04/28/2025 06/12/2025
DEF 14A 34 04/16/2024 05/29/2024
DEF 14A 34 09/01/2023 10/05/2023
PRE 14A 34 08/22/2023 10/05/2023
DEF 14A 34 08/05/2022 09/15/2022
DEF 14A 34 07/06/2021 08/17/2021
PRE 14A 34 06/25/2021 08/17/2021
DEF 14A 34 09/30/2020 10/27/2020
DEF 14A 34 04/26/2019 06/05/2019
DEF 14A 34 04/27/2018 06/05/2018
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Form Type Act Filing Date Report Date Action
S-1/A 33 07/11/2018 05/09/2025
S-1 33 07/09/2018 05/09/2025
S-1/A 33 10/23/2017 05/09/2025
S-1 33 10/06/2017 05/09/2025