David Alexander Fergusson - 25 Sep 2026 Form 4 Insider Report for SEALSQ Corp (LAES)

Reporting relationship: Director
Issuer ticker: LAES
Reported as of: 25 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 06 Oct 2026, 08:20:07 UTC
Prior SEC filing: 18 Mar 2026
Next SEC filing: 09 Oct 2026
Source filing: View source filing
Reporting owner signature: /s/ John O'Hara, Attorney-in-Fact

Filing notes and source

Key filing fact

David Alexander Fergusson filed Form 4 for SEALSQ Corp (LAES) on 06 Oct 2026.

Key facts

This page summarizes David Alexander Fergusson's Form 4 filing for SEALSQ Corp (LAES).
2 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 06 Oct 2026, 08:20.

Change

Previous filing in this sequence was filed on 18 Mar 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002114937 Primary reporting owner

Fergusson David Alexander

Relationship: Director
Address: C/O SEALSQ CORP, AVENUE LOUIS-CASAI 58, COINTRIN, SWITZERLAND
Signature: /s/ John O'Hara, Attorney-in-Fact
Signature date: 05 Oct 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

LAES transaction Derivative

Employee Stock Option Plan (right to buy)

Award

Transaction value
Shares: +3,424
Change %
Price: $0.000000^*
Shares after: 3,424
Date: 25 Sep 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 3,424
Exercise price: $0.0100

LAES transaction Derivative

Employee Stock Option Plan (right to buy)

Award

Transaction value
Shares: +14,063
Change %
Price: $0.000000^*
Shares after: 14,063
Date: 25 Sep 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 14,063
Exercise price: $0.0100

^* marks a reported price that did not pass the local price check.

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