Company · CIK 1701108
Spero Therapeutics, Inc.
| CIK | 1701108 (SEC EDGAR) |
|---|---|
| Industry (SIC) | 2834 — Pharmaceutical Preparations |
| Incorporated in | DE |
| Business address | MA |
| Listed | SPRO (Nasdaq) |
| First annual or quarterly report | 2017-12-14 |
Offerings
6 registrations| Registration | Label and status | First filed | Last event | Filings |
|---|---|---|---|---|
| 333-298641 | 2026-08-28 | 2026-09-10 | 2 | |
| 333-277998 | 2024-03-15 | 2024-03-22 | 2 | |
| 333-254170 | 2021-03-11 | 2021-03-29 | 2 | |
| 333-228661 | 2018-12-03 | 2020-11-13 | 7 | |
| 333-226093 | 2018-07-09 | 2018-07-13 | 4 | |
| 333-220858 | 2017-10-06 | 2017-11-02 | 4 |
Filings
23| Filed | Filing | Registration | Accession |
|---|---|---|---|
| 2026-09-10 | EFFECTDeclared effective | 333-298641 | 9999999995-26-002937 |
| 2026-08-28 | S-3Shelf registered | 333-298641 | 0001193125-26-374702 |
| 2024-03-22 | EFFECTDeclared effective | 333-277998 | 9999999995-24-000719 |
| 2024-03-15 | S-3Shelf registered | 333-277998 | 0001193125-24-069196 |
| 2021-03-29 | EFFECTDeclared effective | 333-254170 | 9999999995-21-001188 |
| 2021-03-11 | S-3Shelf registered | 333-254170 | 0001193125-21-077926 |
| 2020-11-13 | 424B5Shelf takedown | 333-228661 | 0001193125-20-292384 |
| 2020-09-14 | 424B5Shelf takedown | 333-228661 | 0001193125-20-244773 |
| 2020-09-09 | 424B5Shelf takedown | 333-228661 | 0001193125-20-242277 |
| 2020-02-11 | 424B5Shelf takedown | 333-228661 | 0001193125-20-030568 |
| 2019-06-14 | 424B5Shelf takedown | 333-228661 | 0001193125-19-172777 |
| 2018-12-11 | EFFECTDeclared effective | 333-228661 | 9999999995-18-003105 |
| 2018-12-03 | S-3Shelf registered | 333-228661 | 0001193125-18-341227 |
| 2018-07-13 | 424B4Final prospectus | 333-226093 | 0001193125-18-217909 |
| 2018-07-12 | EFFECTDeclared effective | 333-226093 | 9999999995-18-001785 |
| 2018-07-11 | S-1/AAmendment | 333-226093 | 0001193125-18-216210 |
| 2018-07-09 | S-1Registration filed | 333-226093 | 0001193125-18-214717 |
| 2018-05-25 | DRSDraft made public | 377-02085 | 0000950123-18-005976 |
| 2017-11-02 | 424B4Final prospectus | 333-220858 | 0001193125-17-331186 |
| 2017-11-01 | EFFECTDeclared effective | 333-220858 | 9999999995-17-002842 |
| 2017-10-23 | S-1/AAmendment | 333-220858 | 0001193125-17-315961 |
| 2017-10-06 | S-1Registration filed | 333-220858 | 0001193125-17-305888 |
| 2017-08-25 | DRSDraft made public | 377-01690 | 0000950123-17-008253 |