Are insiders buying NTHI stock?

Yes — 8 distinct insiders have bought NTHI (NEONC TECHNOLOGIES HOLDINGS, INC.) on the open market, including 6 cluster buys where two or more insiders bought within a rolling window. The most recent qualifying activity was Sep 16, 2026.

How much NTHI stock have insiders bought?

Insiders have bought a combined $1.2M of NTHI across 33 open-market purchases, based on SEC Form 4 filings.

What is an insider cluster buy in NTHI?

A cluster buy is two or more distinct NEONC TECHNOLOGIES HOLDINGS, INC. insiders — officers, directors, or 10% owners — each buying NTHI on the open market within a rolling window. NTHI has 6 detected cluster buys to date.

Where does this NTHI insider trading data come from?

Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

NTHI insider buying

6 cluster buys

NEONC TECHNOLOGIES HOLDINGS, INC.

When two or more insiders at NEONC TECHNOLOGIES HOLDINGS, INC. buy NTHI on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in NTHI plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.

Clusters

Distinct insiders

Total bought

$1.2M

Market cap

Unknown

Detected clusters

Aug 14 – Sep 15, 2026
Detected Sep 16, 2026
High conviction3 insiders
Total bought
$669.9K
Market cap
Unknown
Aug 14 – Sep 14, 2026
Detected Sep 16, 2026
High conviction3 insiders
Total bought
$495.1K
Market cap
Unknown
Aug 14 – Sep 11, 2026
Detected Sep 14, 2026
High conviction2 insiders
Total bought
$454.1K
Market cap
Unknown

3 more clusters in NTHI

All notable open-market buys in NTHI

Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.

Date	Insider	Shares	Price	Value	Filing
Sep 15, 2026	Heshmatpour Amir Fcluster Director, CEO, President, 10% Owner	35,000	$3.30	$115.4K	SEC ↗
Sep 14, 2026	Heshmatpour Amir Fcluster Director, CEO, President, 10% Owner	15,000	$3.96	$59.4K	SEC ↗
Sep 14, 2026	CHEN THOMAS Ccluster Director, CEO, 10% Owner	5,242	$3.82	$20.0K	SEC ↗
Sep 14, 2026	GARNETT KEITHLYcluster CFO	257	$3.89	$1.0K	SEC ↗
Sep 11, 2026	Heshmatpour Amir Fcluster Director, CEO, President, 10% Owner	37,000	$3.67	$135.6K	SEC ↗
Sep 11, 2026	CHEN THOMAS Ccluster Director, CEO, 10% Owner	5,556	$3.60	$20.0K	SEC ↗
Aug 18, 2026	CHEN THOMAS Ccluster Director, CEO, 10% Owner	12,757	$5.49	$70.0K	SEC ↗
Aug 18, 2026	Heshmatpour Amir Fcluster Director, CEO, President, 10% Owner	9,000	$5.54	$49.9K	SEC ↗
Aug 17, 2026	Heshmatpour Amir Fcluster Director, CEO, President, 10% Owner	3,000	$4.37	$13.1K	SEC ↗
Aug 17, 2026	CHEN THOMAS Ccluster Director, Chief Scientific Officer, 10% Owner	2,472	$4.04	$10.0K	SEC ↗
Aug 14, 2026	CHEN THOMAS Ccluster Director, Chief Scientific Officer, 10% Owner	33,787	$3.85	$130.0K	SEC ↗
Aug 14, 2026	Heshmatpour Amir Fcluster Director, CEO, President, 10% Owner	12,000	$3.79	$45.5K	SEC ↗
Apr 24, 2026	CHEN THOMAS C Director, Chief Scientific Officer, 10% Owner	10,000	$4.80	$48.0K	SEC ↗
Apr 10, 2026	CHEN THOMAS C Director, Chief Scientific Officer, 10% Owner	948	$5.17	$4.9K	SEC ↗
Apr 2, 2026	Heshmatpour Amir F Director, President, 10% Owner	20,000	$6.09	$121.8K	SEC ↗
Nov 21, 2025	Heshmatpour Amir Fcluster Director, President, 10% Owner	20,000	$5.98	$119.6K	SEC ↗
Nov 20, 2025	Neman-Ebrahim Youshacluster Chief Clinical Officer	1,100	$6.69	$7.4K	SEC ↗
May 23, 2025	Heshmatpour Amir Fcluster Director, President	2,000	$7.39	$14.8K	SEC ↗
May 22, 2025	CHEN THOMAS Ccluster Director, CEO, 10% Owner	2,709	$7.38	$20.0K	SEC ↗
May 22, 2025	GARNETT KEITHLYcluster CFO	675	$7.29	$4.9K	SEC ↗
May 21, 2025	CHEN THOMAS Ccluster Director, CEO, 10% Owner	2,759	$7.25	$20.0K	SEC ↗
May 19, 2025	GARNETT KEITHLYcluster CFO	135	$7.23	$976.1	SEC ↗
May 16, 2025	Heshmatpour Amir Fcluster Director, President	3,510	$16.87	$59.2K	SEC ↗
May 15, 2025	Heshmatpour Amir Fcluster Director, President	1,500	$7.30	$11.0K	SEC ↗
May 14, 2025	Heshmatpour Amir Fcluster Director, President	1,000	$7.27	$7.3K	SEC ↗

8 earlier buys hidden — sign in free to see the full history.

NTHI insider buying — FAQ

Are insiders buying NTHI stock?: Yes — 8 distinct insiders have bought NTHI (NEONC TECHNOLOGIES HOLDINGS, INC.) on the open market, including 6 cluster buys where two or more insiders bought within a rolling window. The most recent qualifying activity was Sep 16, 2026.
How much NTHI stock have insiders bought?: Insiders have bought a combined $1.2M of NTHI across 33 open-market purchases, based on SEC Form 4 filings.
What is an insider cluster buy in NTHI?: A cluster buy is two or more distinct NEONC TECHNOLOGIES HOLDINGS, INC. insiders — officers, directors, or 10% owners — each buying NTHI on the open market within a rolling window. NTHI has 6 detected cluster buys to date.
Where does this NTHI insider trading data come from?: Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

How we track insider buying in NTHI

We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy NTHI within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?

This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding NTHI.