GNLX Insider Trading & Form 4 Activity

GENELUX Corp
Last filing: Mar 26, 2026·1mo ago· Data may be outdated
BEARISH · LAST 90 DAYS
0%
buyers
$0
0 buys
$14K
5 sells
-$14K
net selling
4
insiders
ACTIVE SELLING CLUSTER

4 insiders sold a combined $14K of GNLX between Mar 24, 2026 and Mar 25, 2026.

Cappello Joseph, Smalling Ralph, Yu Yong, Zindrick Thomas

Net flow — last 12 months

Monthly net of insider buys minus sells. Green months indicate net buying; red months indicate net selling.

Most active insiders

Ranked by total transaction value over the last 90 days.

INSIDERBOUGHTSOLDNET
Thomas John
Insider
$29K
-$29K
Zindrick Thomas
President and CEO
$9K
-$9K
Cappello Joseph
Chief Technical Officer
$2K
-$2K
Yu Yong
SVP, Clinical Development
$2K
-$2K
Smalling Ralph
Head of Regulatory
$1K
-$1K

Recent transactions

Every Form 4 transaction for GNLX, newest first.

SELL
Smalling Ralph · Head of Regulatory
Tx Mar 25·Filed Mar 26·EDGAR ↗
240 sh @ $2.51
$602
SELL
Smalling Ralph · Head of Regulatory
Tx Mar 24·Filed Mar 26·EDGAR ↗
345 sh @ $2.42
$835
SELL
Cappello Joseph · Chief Technical Officer
Tx Mar 24·Filed Mar 26·EDGAR ↗
906 sh @ $2.42
$2K
SELL
Yu Yong · SVP, Clinical Development
Tx Mar 24·Filed Mar 26·EDGAR ↗
906 sh @ $2.42
$2K
SELL
Zindrick Thomas · President and CEO
Tx Mar 24·Filed Mar 26·EDGAR ↗
3,582 sh @ $2.42
$9K
SELL10b5-1
Thomas John · Insider
Tx Mar 2·Filed Mar 3·EDGAR ↗
10,000 sh @ $2.90
$29K
SELL
Cappello Joseph · Chief Technical Officer
Tx Nov 17·Filed Dec 11·EDGAR ↗
973 sh @ $5.37
$5K
SELL
Yu Yong · SVP, Clinical Development
Tx Nov 17·Filed Dec 11·EDGAR ↗
973 sh @ $5.37
$5K
SELL
Zindrick Thomas · President and CEO
Tx Nov 17·Filed Dec 11·EDGAR ↗
4,509 sh @ $5.37
$24K
SELL
Zindrick Thomas · President and CEO
Tx Aug 21·Filed Dec 11·EDGAR ↗
12,673 sh @ $3.33
$42K
SELL
Cappello Joseph · Chief Technical Officer
Tx Aug 21·Filed Dec 11·EDGAR ↗
1,270 sh @ $3.33
$4K
SELL
Cappello Joseph · Chief Technical Officer
Tx Aug 21·Filed Dec 11·EDGAR ↗
1,463 sh @ $3.36
$5K
SELL
Yu Yong · SVP, Clinical Development
Tx Aug 21·Filed Dec 11·EDGAR ↗
3,219 sh @ $3.36
$11K
SELL
Smalling Ralph · Head of Regulatory
Tx Dec 5·Filed Dec 9·EDGAR ↗
165 sh @ $4.69
$774
SELL
Smalling Ralph · Head of Regulatory
Tx Nov 17·Filed Dec 9·EDGAR ↗
343 sh @ $5.37
$2K
SELL
Smalling Ralph · Head of Regulatory
Tx Sep 3·Filed Dec 9·EDGAR ↗
580 sh @ $3.36
$2K
SELL
Smalling Ralph · Head of Regulatory
Tx Aug 21·Filed Dec 9·EDGAR ↗
1,244 sh @ $3.36
$4K
SELL10b5-1
Thomas John · Insider
Tx Dec 1·Filed Dec 2·EDGAR ↗
10,000 sh @ $5.00
$50K
AWARD
Smalling Ralph · Head of Regulatory
Tx Sep 1·Filed Sep 3·EDGAR ↗
10,000 sh
AWARD
Thomas John · Insider
Tx Aug 27·Filed Aug 29·EDGAR ↗
22,283 sh
AWARD
Zindrick Thomas · President and CEO
Tx Aug 27·Filed Aug 29·EDGAR ↗
361,200 sh
AWARD
Smalling Ralph · Head of Regulatory
Tx Aug 27·Filed Aug 29·EDGAR ↗
26,230 sh
AWARD
Smither John W · Insider
Tx Aug 27·Filed Aug 29·EDGAR ↗
22,283 sh
AWARD
Yu Yong · SVP, Clinical Development
Tx Aug 27·Filed Aug 29·EDGAR ↗
101,480 sh

Track GNLX insider activity

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About GNLX insider trading data

Form 4 is the SEC filing required when an officer, director, or 10% owner of a public company buys or sells the company's stock. By law, these filings must be submitted within two business days of the trade. Tracenotes pulls every Form 4 filing for GNLX from EDGAR, parses it, and surfaces the activity on this page.

What insider buying tells you. Open-market purchases by insiders are widely studied as a meaningful signal. Unlike stock awards (which are compensation, not conviction), an executive spending their own money to buy shares of the company they run is a vote of confidence. Studies have found insider-buying clusters — three or more insiders buying within a short window — outperform the broader market over the following year.

What insider selling tells you. Selling is noisier. Many sales are pre-scheduled under SEC Rule 10b5-1 plans, which let insiders sell on a fixed schedule regardless of company news. We label these "10b5-1" so you can see them. Discretionary sales — sales not tied to a plan — are more meaningful, especially when multiple insiders sell in quick succession.

Tracenotes methodology. We scan EDGAR daily for new Form 4 filings, parse them into individual transactions, and detect clusters when three or more distinct insiders buy or sell within a 14-day window. The data on this page covers the last 12 months. For deeper analysis, Tracenotes also runs language-change detection on 10-K and 10-Q filings — that's our core product.

Frequently asked questions

What is a Form 4 filing?

Form 4 is the SEC disclosure required when a company insider — an officer, director, or 10% owner — buys or sells the company's stock. By law these filings must be submitted within two business days of the trade.

Is insider buying GNLX always bullish?

Open-market purchases by insiders are widely viewed as a bullish signal because executives are spending their own money. Stock awards and option exercises are part of compensation and don't carry the same weight, which is why we treat them separately on this page.

What is a 10b5-1 trade?

A trade made under SEC Rule 10b5-1, which lets insiders pre-schedule sales weeks or months in advance. These sales execute on a fixed plan regardless of company news, so they're a weaker signal than discretionary sales. We label them with a "10b5-1" tag.

What is an insider cluster?

A cluster is when three or more distinct insiders buy or sell within a 14-day window. Clusters are studied as stronger signals than single trades because multiple people independently reach the same view. We surface active clusters on GENELUX Corp (GNLX) when they form.

Where does GNLX insider trading data come from?

Every Form 4 filing for GNLX is sourced directly from SEC EDGAR. Tracenotes scans EDGAR daily, parses each Form 4 into individual transactions, and updates this page within hours of new filings.

Other tickers with active clusters

Insider clusters detected elsewhere in the last 30 days.

JPMSELLING
$55.3M
8 insiders

Nothing on this page constitutes investment advice. Form 4 data is sourced from SEC EDGAR and provided for research purposes only.

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