SEALSQ director Fergusson reports share holdings

SEALSQ Corp director David Alexander Fergusson filed an initial ownership report showing his stake in the company.

Rhea-AI Filing Summary

SEALSQ Corp director David Alexander Fergusson filed an initial ownership report showing his stake in the company. He reports 1,000 Ordinary Shares held directly and an additional 581 Ordinary Shares held indirectly, attributed to his son. The filing does not indicate any recent purchases or sales, only current holdings.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Fergusson David Alexander

Role Director

Type	Security	Shares	Price	Value
holding	Ordinary Shares	--	--	--
holding	Ordinary Shares	--	--	--

Holdings After Transaction: Ordinary Shares — 1,000 shares (Direct); Ordinary Shares — 581 shares (Indirect, By son)

FAQ

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

What does the SEALSQ Corp (LAES) Form 3 filing by David Fergusson show?

The Form 3 shows director David Alexander Fergusson’s existing holdings in SEALSQ Corp. He reports 1,000 Ordinary Shares held directly and 581 Ordinary Shares held indirectly through his son, with no new buy or sell transactions disclosed.

How many SEALSQ Corp (LAES) shares does David Fergusson hold directly and indirectly?

David Alexander Fergusson reports 1,000 SEALSQ Corp Ordinary Shares held directly in his name. He also reports 581 Ordinary Shares held indirectly, identified in the filing as being held by his son, reflecting beneficial ownership across both positions.

Does the SEALSQ Corp (LAES) Form 3 indicate that David Fergusson bought or sold shares?

The Form 3 does not show any explicit purchases or sales by David Alexander Fergusson. It classifies both entries as holdings, with transaction codes and directions marked as unknown, indicating only current ownership levels rather than recent trading activity.

What is the significance of the indirect ownership ‘By son’ in the SEALSQ Corp (LAES) Form 3?

The filing notes 581 Ordinary Shares as indirectly owned, described as “By son.” This means the shares are held in the son’s name, but David Alexander Fergusson reports beneficial ownership, which can reflect familial or economic interest in those shares.

Is the SEALSQ Corp (LAES) Form 3 for David Fergusson a routine insider ownership filing?

Yes. The Form 3 is a routine disclosure of insider ownership, showing David Alexander Fergusson’s direct and indirect Ordinary Share positions. It records 1,000 direct shares and 581 indirect shares, with no indication of recent market transactions or option exercises.

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

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Accepted by SEC EDGAR 03/18/2026 - 09:07 AM EDT Learn about SEC filing dates

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^*

Fergusson David Alexander

(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
	Officer (give title below)		Other (specify below)

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)
Ordinary Shares	1,000	D
Ordinary Shares	581	I	By son

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, Attorney-in-Fact	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)