4//SEC Filing
THOMAS FRANK E 4
Accession 0000950170-25-087009
CIK 0001701108other
Filed
Jun 15, 8:00 PM ET
Accepted
Jun 16, 8:24 PM ET
Size
4.9 KB
Accession
0000950170-25-087009
Insider Transaction Report
Form 4
THOMAS FRANK E
Director
Transactions
- Award
Common Stock
2025-06-12+20,000→ 75,000 total
Footnotes (1)
- [F1]Consists of restricted stock units ("RSUs"). Each RSU represents the right to receive one share of common stock upon vesting. The RSUs vest on June 12, 2026, subject to the Reporting Person's continued service through the applicable vesting date.
Documents
Issuer
Spero Therapeutics, Inc.
CIK 0001701108
Entity typeother
Related Parties
1- filerCIK 0001242616
Filing Metadata
- Form type
- 4
- Filed
- Jun 15, 8:00 PM ET
- Accepted
- Jun 16, 8:24 PM ET
- Size
- 4.9 KB