SEALSQ CEO corrects Form 3 share holdings

SEALSQ Corp Chief Executive Officer Carlos Moreira filed an amended Form 3 to correct his reported holdings of Ordinary Shares.

Rhea-AI Filing Summary

SEALSQ Corp Chief Executive Officer Carlos Moreira filed an amended Form 3 to correct his reported holdings of Ordinary Shares. The amendment shows he directly holds 727,659 Ordinary Shares, including 120,262 shares that were inadvertently omitted from his original Form 3.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Moreira Carlos

Role Chief Executive Officer

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

Holdings After Transaction: Ordinary Shares — 727,659 shares (Direct)

Footnotes (1)

1. F1. 120,262 Ordinary Shares were inadvertently omitted from the reporting person's original Form 3.

Key Figures

Directly held Ordinary Shares: 727,659 shares Previously omitted shares: 120,262 shares

2 metrics

Directly held Ordinary Shares 727,659 shares Beneficial ownership after Form 3/A amendment

Previously omitted shares 120,262 shares Ordinary Shares omitted from original Form 3

Key Terms

Form 3/A, Ordinary Shares, beneficial ownership

3 terms

Form 3/A regulatory

"120,262 Ordinary Shares were inadvertently omitted from the reporting person's original Form 3."

An amended Form 3 (Form 3/A) is a corrected or updated disclosure filed with regulators that revises an insider’s initial report of their ownership in a public company — typically for officers, directors or large shareholders. Investors use it like a corrected inventory list: it clarifies who owns how many shares and whether earlier reports had errors, helping assess insider confidence, possible conflicts and the accuracy of ownership records that can affect stock valuation and trust.

Ordinary Shares financial

"120,262 Ordinary Shares were inadvertently omitted from the reporting person's original Form 3."

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

beneficial ownership financial

"120,262 Ordinary Shares were inadvertently omitted from the reporting person's original Form 3."

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

FAQ

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

What does the SEALSQ Corp (LAES) Form 3/A filing report for Carlos Moreira?

The Form 3/A shows that CEO Carlos Moreira directly holds 727,659 Ordinary Shares of SEALSQ Corp. This amended filing corrects his initial ownership report and updates investors on his current beneficial holdings in the company.

Why did SEALSQ Corp (LAES) CEO amend his original Form 3?

The amendment was filed because 120,262 Ordinary Shares were inadvertently omitted from Carlos Moreira’s original Form 3. The Form 3/A corrects this error so his disclosed ownership accurately reflects all shares he beneficially holds.

How many SEALSQ Corp (LAES) shares does Carlos Moreira now report owning?

Carlos Moreira now reports direct ownership of 727,659 Ordinary Shares of SEALSQ Corp. This figure includes the previously omitted 120,262 shares and represents his corrected beneficial ownership position as disclosed in the amended Form 3.

Does the SEALSQ Corp (LAES) Form 3/A show any new insider buying or selling?

The Form 3/A reflects a correction of reported holdings rather than new trades. It updates Carlos Moreira’s beneficial ownership to 727,659 Ordinary Shares, including 120,262 shares that were unintentionally left out of the original filing.

What type of security is disclosed in the SEALSQ Corp (LAES) Form 3/A?

The amended Form 3 covers Ordinary Shares of SEALSQ Corp held by CEO Carlos Moreira. It clarifies his total direct ownership, ensuring the company’s insider ownership records align with actual Ordinary Share holdings reported to regulators.

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

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Accepted by SEC EDGAR 03/30/2026 - 05:33 PM 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^*

Moreira Carlos

(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)
03/18/2026

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

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive 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)
Ordinary Shares	727,659(1)	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:

1. 120,262 Ordinary Shares were inadvertently omitted from the reporting person's original Form 3.

	/s/ John O'Hara, Attorney-in-Fact	03/30/2026
	** 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)