Debra Zack
CIK: 0001807743
Transaction Breakdown
Open Market Buys (P)0 (0.0%)
High conviction signal
Open Market Sales (S)0 (0.0%)
Position reduction
Option Exercises (M)0 (0.0%)
Derivative conversions
Awards (A)1 (100.0%)
Compensation grants
Other (G, F, J, C, D, …)0 (0.0%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
SPRO
Spero Therapeutics, Inc.
Officer
Discretionary Trading P&L
Holdings
About Zack Debra
Zack Debra (SEC CIK 0001807743) files insider reports with the SEC as Chief Medical Officer of Spero Therapeutics, Inc. (SPRO).
Signal8 holds 2 ownership filings by Zack Debra (1 Form 3, 1 Form 4), filed on Aug 6, 2026. Those filings report 1 transaction, the latest on Aug 3, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Zack Debra's filings is in CAMBRIDGE, MA.
Recent filings by Zack Debra
- Aug 3, 2026: Grant or award of SPRO shares (Form 4, code A).
Other insiders filing for Spero Therapeutics, Inc. (SPRO)
- Deshpande Milind, Director
- Tregoning Kathleen, Director
- Smith Cynthia, Director
- VINK PATRICK V.J.J., Director
- THOMAS FRANK E, Director
- Jackson Scott Thomas, Director