Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Cynthia Smith files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Sarah Gheuens - $1.55M in AGIO purchases and sales in the last 12 months
- Brian Goff - $1.18M in AGIO purchases and sales in the last 12 months
- John P. Butler - $561K in AKBA purchases and sales in the last 12 months
- Esther Rajavelu - $407K in SPRO purchases and sales in the last 12 months
- James William Burns - $265K in AGIO purchases and sales in the last 12 months
- Cecilia Jones - $255K in AGIO purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Frequently asked questions
Who is Cynthia Smith?
Cynthia Smith is a corporate insider of Spero Therapeutics, Inc. (SPRO). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Cynthia Smith last file a Form 4?
The most recent primary Form 4 on record is dated 25 June 2026, one of 6 filings going back to 2025.
