Spero Therapeutics, Inc. - SPRO
All tracked SEC files for this issuer. Showing up to 200 latest records.
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Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 9
Latest filed: Mar 26, 2026
| Form | Count |
|---|---|
| 4 | 5 |
| 8-K | 4 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| Mar 26, 2026 | 8-K | Mar 26, 2026 | 0001193125-26-126244 | View |
| Feb 09, 2026 | 4 | Feb 06, 2026 | 0001193125-26-043315 | View |
| Feb 09, 2026 | 4 | Feb 06, 2026 | 0001193125-26-043336 | View |
| Feb 05, 2026 | 4 | Feb 02, 2026 | 0001193125-26-038441 | View |
| Feb 04, 2026 | 4 | Feb 02, 2026 | 0001193125-26-038184 | View |
| Jan 30, 2026 | 8-K | Jan 30, 2026 | 0001193125-26-032004 | View |
| Dec 19, 2025 | 8-K | Dec 19, 2025 | 0001193125-25-325821 | View |
| Nov 13, 2025 | 8-K | Nov 13, 2025 | 0001193125-25-280518 | View |
| Nov 12, 2025 | 4 | Nov 07, 2025 | 0001193125-25-278370 | View |