Summary
Updated Aug 30, 2026
Xudong Feng is Director of Koppers Holdings Inc. (KOP). 6 SEC Form 4 filings on record going back to 2024, most recently on 17 June 2026.
Recent Transactions
2Every recent SEC Form 4 transaction Xudong Feng has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Xudong Feng 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.
- James A. Sullivan - $4.38M of KOP open-market activity in the last 12 months
- M. Leroy Ball - $897K of KOP open-market activity in the last 12 months
- Bradley A. Pearce - $102K of KOP open-market activity in the last 12 months
- Stephen G. Lucas - $58K of KOP 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 Xudong Feng?
Xudong Feng is a corporate insider, tracked as Director of Koppers Holdings Inc. (KOP). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Xudong Feng submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Where can I see all of Xudong Feng'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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