Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Zhen Su 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.
- Sean A. McCarthy - $1.23M in CTMX purchases and sales in the last 12 months
- Marcia Belvin - $202K in CTMX purchases and sales in the last 12 months
- Richard A. Paulson - $137K in KPTI purchases and sales in the last 12 months
- Yu-Waye Chu - $137K in CTMX purchases and sales in the last 12 months
- Christopher Ogden - $129K in CTMX purchases and sales in the last 12 months
- Stuart Poulton - $56K in KPTI purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Frequently asked questions
Who is Zhen Su?
Zhen Su is a corporate insider of CytomX Therapeutics, Inc. (CTMX). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Zhen Su last file a Form 4?
The most recent primary Form 4 on record is dated 22 June 2026, one of 2 filings going back to 2026.
