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US INSIDER PROFILE · NON-SCORING RESEARCH

CHEN THOMAS C

Chief Executive Officer | Officer

Identity: SEC reporting-owner CIK · Reporting-owner CIK: 0001998682

Purchase history

Companies traded
1
Purchases · 12M
4
Purchases · 24M
6
Average purchase
$81.0K
Median purchase
$55.0K
Gross purchase value
$485.9K

Companies: NEONC TECHNOLOGIES HOLDINGS, INC.

6 SEC accession(s) · 0 joint-owner event(s). Values are reported Form 4 transaction values in USD.

Qualifying purchase disclosures

PublishedCompanyTickerRoleReported valueSEC source
2026-09-15NEONC TECHNOLOGIES HOLDINGS, INC.NTHIChief Executive Officer$40.0KOpen filing
2026-08-20NEONC TECHNOLOGIES HOLDINGS, INC.NTHIOfficer$193.0KOpen filing
2026-08-20NEONC TECHNOLOGIES HOLDINGS, INC.NTHIChief Executive Officer$70.0KOpen filing
2026-08-18NEONC TECHNOLOGIES HOLDINGS, INC.NTHIChief Executive Officer$140.1KOpen filing
2025-05-23NEONC TECHNOLOGIES HOLDINGS, INC.NTHIChief Executive Officer$40.0KOpen filing
2025-05-19NEONC TECHNOLOGIES HOLDINGS, INC.NTHIChief Executive Officer$2.8KOpen filing

Post-purchase outcomes

Excess return = stock return − S&P 500 ETF (SPY adjusted close) return. Returns start on the first shared trading session on or after publication.

PeriodCompleted eventsPrice coverageHit rateMedian excess returnAverage excess returnWorst excess return
5D6Developing100.0% (6/6)33.3% (2/6)-0.1%-2.1%-14.6%
20D6Developing100.0% (6/6)0.0% (0/6)-28.9%-34.8%-53.8%
60D2Small Sample100.0% (2/2)0.0% (0/2)-37.8%-37.8%-38.9%
120D2Small Sample100.0% (2/2)100.0% (2/2)+15.2%+15.2%+7.7%

Research patterns

First purchase in 12M
1/5
Large purchase ≥ $100k
2/6
Cluster buying · 15D
6/6
Buying the dip
4/4

Routine / opportunistic: Not classifiable. These labels never affect the score or ranking.

Small samples remain visible but are not scored. This research enrichment never affects US-v1.1.