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 - $1.02M in NTHI purchases and sales in the last 12 months
Keithly Garnett - $19K in NTHI purchases and sales in the last 12 months
Thomas C. Chen is a corporate insider, tracked as CEO, Director, 10% Owner of NEONC TECHNOLOGIES HOLDINGS, INC. (NTHI). InsiderAlpha holds 3 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?
3 primary Form 4 filings in the last 90 days, covering 1 company.
Has Thomas C. Chen been buying or selling stock?
Recorded transactions: 8 open-market purchases ($373K) and 0 open-market sales across all tracked filings.
Thomas C. Chen is CEO, Director, 10% Owner of NEONC TECHNOLOGIES HOLDINGS, INC. (NTHI). 3 SEC Form 4 filings on record, most recently on 16 September 2026. Most recent open-market trade: bought $20K of NTHI on 16 September 2026. Lifetime open-market purchases: $373K.
Recent transactions
8
The latest 8 SEC Form 4 transactions reported by Thomas C. Chen.
InsiderAlpha's records for Thomas C. Chen go back to 2026: 3 primary Form 4 filings, an average of 3.0 per year. The typical open-market purchase is $47K (8 buys totaling $373K). The largest single buy on record is $130K of NTHI in 2026. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
