Summary
Updated Aug 31, 2026
Matthew P. Young files SEC Form 4 reports at CytomX Therapeutics, Inc. (CTMX). 1 SEC Form 4 filing on record, dated 22 June 2026.
Trading Pattern
InsiderAlpha's records for Matthew P. Young go back to 2026: 1 primary Form 4 filing, an average of 1.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Matthew P. Young 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 of CTMX open-market activity in the last 12 months
- Marcia Belvin - $202K of CTMX open-market activity in the last 12 months
- Yu-Waye Chu - $137K of CTMX open-market activity in the last 12 months
- Christopher Ogden - $129K of CTMX open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Matthew P. Young?
Matthew P. Young is a corporate insider of CytomX Therapeutics, Inc. (CTMX). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Matthew P. Young submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Matthew P. Young's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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