Reporting owner · CIK 0001998682
Chen Thomas C
Visual SEC Form 4 history across 1 companies, 7 transactions and 3 filings.
CEOCEONEONC TECHNOLOGIES HOLDINGS, INC.
Open-market mix
100%buys
Open-market buy performance
90-day forward return on this insider's open-market purchases
For every open-market buy (Form 4 code P, acquisition A) in the selected window, we take the closing price on the transaction date and 90 calendar days later, then compute the percentage change. The figures shown are the simple average and median of those per-buy returns.
- Window follows the rest of the summary (all-history or last 3 months).
- Only buys with a resolved price context are counted.
- Includes both positive and negative outcomes; gains and losses net out at the per-buy level.
Monthly open-market activity
Reported purchase and sale transaction counts
Buys Sells
Net value flow
Buys minus sells
Apr 26
$52.9K
Aug 26
$350K
Transaction texture
Ownership and ticket size
Average P/S size$57.6K
Median P/S size$48K
Direct4
Indirect3
Aug 18, 2026buy
Filing-only signals
Deterministic matches in this insider's history
Latest Form 4 facts
Quick context from source filings
Latest transaction
buy at NEONC TECHNOLOGIES HOLDINGS, INC. on Aug 18, 2026 valued at $69,998.
Review SEC filingLatest buy
buy at NEONC TECHNOLOGIES HOLDINGS, INC. on Aug 18, 2026 valued at $69,998.
Review SEC filingLatest sale
No open-market insider sale is available.
Associated companies
Visual map of known reporting history
Latest insider transactions
Form 4 filings from the last 7 days. Click any column to sort; click it again to flip the order.
| ID | Ticker | Insider | Role | Type | Shares | Value | Code | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|
| #15657 | NTHI | Chen Thomas C | CEO | buy | 12.7k | $6.99M | P | 08/21 | 08/18 |
| #15656 | NTHI | Chen Thomas C | CSO | buy | 2.47k | $999k | P | 08/21 | 08/17 |
| #15655 | NTHI | Chen Thomas C | CSO | buy | 33.7k | $13.0M | P | 08/21 | 08/14 |
| #15654 | NTHI | Chen Thomas C | CSO | buy | 10.0k | $4.80M | P | 08/21 | 04/24 |
| #15653 | NTHI | Chen Thomas C | CSO | buy | 948 | $489k | P | 08/21 | 04/10 |
| #2138 | NTHI | Chen Thomas C | CEO | buy | 2.47k | $999k | P | 08/18 | 08/17 |
| #2137 | NTHI | Chen Thomas C | CEO | buy | 33.7k | $13.0M | P | 08/18 | 08/14 |
Chen Thomas C Insider Activity FAQ
SEC Form 4 context
Who is Chen Thomas C?
Chen Thomas C is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001998682.
Which companies has Chen Thomas C reported transactions for?
NEONC TECHNOLOGIES HOLDINGS, INC.
When was Chen Thomas C's latest insider buy?
buy at NEONC TECHNOLOGIES HOLDINGS, INC. on Aug 18, 2026 valued at $69,998.
When was Chen Thomas C's latest insider sale?
No open-market insider sale is available for this period.
Where can I see the original SEC filings?
Each transaction row links directly to the source SEC filing so the reported Form 4 details can be reviewed.
Are performance metrics included?
This version does not calculate win rates, forward returns, benchmark-adjusted returns, or high-conviction scores.