Form 4 filings across 1 company. Net figures count open-market buys and sales only. EDGAR profile ↗
Lifetime net: -$406.8K
Reported holding is the most recent post-transaction share count on a Table I row.
How quickly this filer reports. Section 16 allows two business days from the transaction.
All 5 filings we hold were filed within the two-business-day deadline.
Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings
The 8 most recent Form 4 transactions.
| Feb 6 | SPRO | Spero Therapeutics, Inc. | SSELL | 37,101 | $2.36 | $87.6K | -3.4% | Open the original filing on SEC.gov |
| Feb 2 | SPRO | Spero Therapeutics, Inc. | AGRANT◆ | 498,000 | — | — | — | Open the original filing on SEC.gov |
| Feb 2 | SPRO | Spero Therapeutics, Inc. | SSELL | 18,442 | $2.20 | $40.6K | -1.7% | Open the original filing on SEC.gov |
| Feb 2 | SPRO | Spero Therapeutics, Inc. | AGRANT | 249,000 | — | — | +28.6% | Open the original filing on SEC.gov |
| Nov 7, 2025 | SPRO | Spero Therapeutics, Inc. | SSELL | 40,270 | $2.37 | $95.4K | -4.4% | Open the original filing on SEC.gov |
| May 2, 2025 | SPRO | Spero Therapeutics, Inc. | AGRANT | 185,000 | — | — | +25.5% | Open the original filing on SEC.gov |