Insider · CIK 0001807743
Debra Zack
Files at: SPRO. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 3, 2026 AForm 4 → | Aug 6, 6:49 pm EDT | Spero Therapeutics, Inc.SPRO | 162,311 | — | — | 162,311 | — | 10b5-1 late |
Reported trades — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 3, 2026 AForm 4 → | Aug 6, 6:49 pm EDT | Spero Therapeutics, Inc.SPRO | 324,675 | — | — | 324,675 | — | 10b5-1 late |