4
Changes in Ownership
Spero Therapeutics, Inc. Filed Acc 0001807743-26-000007
Chief Medical Officer acquired 162,311 shares (grant or award)
- Traded under a Rule 10b5-1 plan
From the SEC's structured data for this filing
Trades in this filing
| Insider | Date | Transaction | Shares | Price | Value | Owned after | D/I |
|---|---|---|---|---|---|---|---|
| Zack Debra Chief Medical Officer | 2026-08-03 | Grant or award 10b5-1 | +162,311 | 162,311 | D | ||
| Derivatives | |||||||
| Zack Debra Chief Medical Officer | 2026-08-03 | Grant or award · Stock option (right to buy) 10b5-1 | +324,675 | 324,675 | D | ||
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