SEALSQ CFO reports initial share holdings

SEALSQ Corp filed an initial insider ownership report for Chief Financial Officer John Charles O'Hara.

Accepted by SEC EDGAR 03/18/2026 - 09:05 AM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

SEALSQ Corp filed an initial insider ownership report for Chief Financial Officer John Charles O'Hara. The filing shows direct holdings of 4 Class F Shares and 215,183 Ordinary Shares. This Form 3 reflects existing ownership positions and does not report any new buy or sell transactions.

Insider Trade Summary

Holdings reported, no transactions

Holdings

Insider O'Hara John Charles

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Holding	Class F Shares	--	--	--
Holding	Ordinary Shares	--	--	--

Holdings: Class F Shares — 4 shares (Direct); Ordinary Shares — 215,183 shares (Direct)

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does SEALSQ Corp (LAES) Form 3 for John Charles O'Hara show?

The Form 3 shows John Charles O'Hara’s existing ownership in SEALSQ Corp. He directly holds 4 Class F Shares and 215,183 Ordinary Shares. This filing records his initial beneficial ownership as a company insider.

Did SEALSQ Corp CFO John Charles O'Hara buy or sell LAES shares in this Form 3?

No, the Form 3 does not report any new purchases or sales. It only lists John Charles O'Hara’s existing direct holdings of Class F Shares and Ordinary Shares as his initial beneficial ownership disclosure.

How many Ordinary Shares of SEALSQ Corp does John Charles O'Hara hold?

John Charles O'Hara directly holds 215,183 Ordinary Shares of SEALSQ Corp. This number represents his reported beneficial ownership following the Form 3 filing and reflects an existing position rather than a new transaction.

What insider role does John Charles O'Hara have at SEALSQ Corp (LAES)?

John Charles O'Hara is reported as both a director and an officer of SEALSQ Corp, serving as Chief Financial Officer. His Form 3 ownership disclosure reflects his status as a company insider subject to reporting rules.

What types of SEALSQ securities are reported in John Charles O'Hara’s Form 3?

The Form 3 reports John Charles O'Hara’s direct holdings of Class F Shares and Ordinary Shares. He holds 4 Class F Shares and 215,183 Ordinary Shares, providing a detailed breakdown of his equity exposure in SEALSQ Corp.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

O'Hara John Charles

(Last) (First) (Middle)

C/O SEALSQ CORP

AVENUE LOUIS-CASAI 58

(Street)

COINTRIN 1216

(City) (State) (Zip)

SWITZERLAND

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
SEALSQ Corp [ LAES ]

3a. Foreign Trading Symbol

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

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

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

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

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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Class F Shares	4	D
Ordinary Shares	215,183	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ John O'Hara	03/18/2026
	** 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 5 (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 3: SEC 1473 (03-26)