Summary
Updated Aug 31, 2026
Thomas C. Chen is Chief Scientific Officer, Director, 10% Owner of NEONC TECHNOLOGIES HOLDINGS, INC. (NTHI). 2 SEC Form 4 filings on record, most recently on 21 August 2026. Most recent open-market trade: bought $10K of NTHI on 21 August 2026. Lifetime open-market purchases: $333K.
Recent Transactions
6Every recent SEC Form 4 transaction Thomas C. Chen has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Thomas C. Chen go back to 2026: 2 primary Form 4 filings, an average of 2.0 per year. The typical open-market purchase is $55K (6 buys totaling $333K). The largest single buy on record is $130K of NTHI in 2026. 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 Thomas C. Chen 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.
- Amir F. Heshmatpour - $713K of NTHI open-market activity in the last 12 months
- Yousha Neman-Ebrahim - $10K of NTHI open-market activity in the last 12 months
- Keithly Garnett - $2K of NTHI open-market activity in the last 12 months
- David Suh, Jr. - $1K of NTHI 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 Thomas C. Chen?
Thomas C. Chen is a corporate insider, tracked as Chief Scientific Officer, Director, 10% Owner of NEONC TECHNOLOGIES HOLDINGS, INC. (NTHI). 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 Thomas C. Chen submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Thomas C. Chen been buying or selling stock?
Recorded transactions: 6 open-market purchases ($333K) and 0 open-market sales across all tracked filings.
Where can I see all of Thomas C. Chen'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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