Spero Therapeutics, Inc. - SPRO
All tracked SEC files for this issuer. Showing up to 200 latest records.
Need parsed ownership details (13D/13G with shares/percent)?
Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 16
Latest filed: Aug 28, 2026
| Form | Count |
|---|---|
| 4 | 9 |
| 8-K | 7 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| Aug 28, 2026 | 8-K | Aug 28, 2026 | 0001193125-26-374788 | View |
| Aug 12, 2026 | 8-K | Aug 12, 2026 | 0001193125-26-346855 | View |
| Aug 06, 2026 | 4 | Aug 03, 2026 | 0001807743-26-000007 | View |
| Jul 14, 2026 | 8-K | Jul 08, 2026 | 0001193125-26-302473 | View |
| Jun 25, 2026 | 4 | Jun 23, 2026 | 0001193125-26-283245 | View |
| Jun 25, 2026 | 4 | Jun 23, 2026 | 0001193125-26-283238 | View |
| Jun 25, 2026 | 4 | Jun 23, 2026 | 0001193125-26-283198 | View |
| Jun 25, 2026 | 4 | Jun 23, 2026 | 0001193125-26-283202 | View |
| Jun 25, 2026 | 4 | Jun 23, 2026 | 0001193125-26-283209 | View |
| Jun 25, 2026 | 4 | Jun 23, 2026 | 0001193125-26-283226 | View |
| Jun 25, 2026 | 4 | Jun 23, 2026 | 0001193125-26-283230 | View |
| Jun 25, 2026 | 8-K | Jun 23, 2026 | 0001193125-26-283033 | View |
| Jun 22, 2026 | 8-K | Jun 17, 2026 | 0001193125-26-277506 | View |
| May 13, 2026 | 8-K | May 13, 2026 | 0001193125-26-221567 | View |
| May 06, 2026 | 4 | May 04, 2026 | 0001193125-26-209884 | View |
| Mar 26, 2026 | 8-K | Mar 26, 2026 | 0001193125-26-126244 | View |