Summary
Updated Aug 30, 2026
Cong Claire Xu is SVP, Clinical Development of NovaBridge Biosciences (NBP). 2 SEC Form 4 filings on record, most recently on 7 July 2026. Most recent open-market trade: sold $4K of NBP on 7 July 2026. Lifetime open-market sales: $18K.
Recent Transactions
4Every recent SEC Form 4 transaction Cong Claire Xu 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 Cong Claire Xu 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.
- Mark Arnold Hagler - $577K of NBP open-market activity in the last 12 months
- Sean Wuxiong Cao - $43K of NBP open-market activity in the last 12 months
- Phillip Andrew Dennis - $6K of NBP 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 Cong Claire Xu?
Cong Claire Xu is a corporate insider, tracked as SVP, Clinical Development of NovaBridge Biosciences (NBP). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Cong Claire Xu submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Cong Claire Xu been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($18K) across all tracked filings.
Where can I see all of Cong Claire Xu'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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