GENELUX (GNLX) CTO sells 605 shares to cover RSU tax obligations

Rhea-AI Filing Summary

GENELUX Corp Chief Technical Officer Joseph Cappello reported a small sale of 605 shares of Common Stock. The shares were sold at a weighted average price of $2.9742 per share, with individual prices ranging between $2.96 and $3.01.

According to the disclosure, this sale was made to cover estimated taxes related to the vesting of restricted stock units, making it a tax-driven, compensation-related transaction rather than a discretionary portfolio decision. After this transaction, Cappello directly holds 154,549 shares of GENELUX Corp common stock.

Insider Trade Summary

Net Seller: 605 shares ($1,799)

Net Sell 1 txn

Insider Cappello Joseph

Role Chief Technical Officer

Sold 605 shs ($2K)

Type	Security	Shares	Price	Value
Sale	Common Stock	605	$2.9742	$2K

Holdings After Transaction: Common Stock — 154,549 shares (Direct, null)

Footnotes (1)

1. Represents shares sold by the Reporting Person to cover estimated taxes to be paid by the Reporting Person in connection with the vesting of restricted stock units. The weighted average sale price for the transaction reported was $2.9742, and the range of prices were between $2.96 and $3.01. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

Key Figures

Shares sold: 605 shares Weighted average sale price: $2.9742 per share Price range: $2.96 to $3.01 +1 more

4 metrics

Shares sold 605 shares Open-market sale on 2026-05-11

Weighted average sale price $2.9742 per share Common Stock sale on 2026-05-11

Price range $2.96 to $3.01 Range of prices for reported sale

Shares owned after transaction 154,549 shares Direct ownership following sale

Key Terms

restricted stock units, weighted average sale price, open-market sale, estimated taxes

4 terms

restricted stock units financial

"in connection with the vesting of restricted stock units."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

weighted average sale price financial

"The weighted average sale price for the transaction reported was $2.9742"

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

estimated taxes financial

"to cover estimated taxes to be paid by the Reporting Person"

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Cappello Joseph

(Last) (First) (Middle)

C/O GENELUX CORPORATION

2625 TOWNSGATE ROAD, SUITE 230

(Street)

WESTLAKE VILLAGE CALIFORNIA 91361

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
GENELUX Corp [ GNLX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Technical Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/11/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/11/2026		S(1)		605	D	$2.9742(2)	154,549	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents shares sold by the Reporting Person to cover estimated taxes to be paid by the Reporting Person in connection with the vesting of restricted stock units.

2. The weighted average sale price for the transaction reported was $2.9742, and the range of prices were between $2.96 and $3.01. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

	/s/ Thomas Zindrick, J.D., Attorney-in-Fact	05/12/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did GENELUX Corp (GNLX) report for Joseph Cappello?

GENELUX Corp reported that Chief Technical Officer Joseph Cappello sold 605 shares of common stock. The filing states the sale was made to cover estimated taxes arising from the vesting of restricted stock units, rather than a discretionary open-market sale.

How many GENELUX Corp (GNLX) shares did Joseph Cappello sell and at what price?

Joseph Cappello sold 605 GENELUX Corp common shares. The filing reports a weighted average sale price of $2.9742 per share, with individual trade prices ranging between $2.96 and $3.01 during the transaction.

Why did GENELUX Corp (GNLX) CTO Joseph Cappello sell shares in this Form 4?

The Form 4 explains that Joseph Cappello sold shares to cover estimated taxes tied to the vesting of restricted stock units. This makes the transaction part of compensation-related tax management, not a purely discretionary trade in GENELUX Corp stock.

How many GENELUX Corp (GNLX) shares does Joseph Cappello hold after the reported sale?

After selling 605 shares, the Form 4 shows Joseph Cappello directly owns 154,549 GENELUX Corp common shares. This post-transaction holding indicates the sale represents a small portion of his disclosed equity position in the company.

Was Joseph Cappello’s GENELUX Corp (GNLX) share sale a routine tax-related transaction?

Yes. The footnote states the 605 shares were sold to cover estimated taxes linked to restricted stock unit vesting. Such tax-cover sales are typically routine compensation-related events rather than signals of a changed view on GENELUX Corp.