Franck Jean Buonanno - 27 Mar 2026 Form 4 Insider Report for SEALSQ Corp (LAES)

Reporting relationship: Vice-President, Global Sales
Issuer ticker: LAES
Reported as of: 27 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 27 Mar 2026, 16:15:16 UTC
Prior SEC filing: 18 Mar 2026
Next SEC filing: 01 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ John O'Hara, Attorney-in-Fact

Key filing fact

Franck Jean Buonanno filed Form 4 for SEALSQ Corp (LAES) on 27 Mar 2026.

Key facts

This page summarizes Franck Jean Buonanno's Form 4 filing for SEALSQ Corp (LAES).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 27 Mar 2026, 16:15.

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 0002115431 Primary reporting owner

Buonanno Franck Jean

Relationship: Vice-President, Global Sales
Address: C/O SEALSQ CORP, AVENUE LOUIS-CASAI 58, COINTRIN, SWITZERLAND
Signature: /s/ John O'Hara, Attorney-in-Fact
Signature date: 27 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

LAES transaction

Ordinary Shares

Options Exercise

Transaction value
Shares: +15,000
Change %: +300%
Price: $0.0100^*
Shares after: 20,000
Date: 27 Mar 2026
Ownership: Direct

Reported derivative securities

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

LAES transaction Derivative

Employee Stock Option (right to buy)

Options Exercise

Transaction value
Shares: -15,000
Change %: -43%
Price: $0.000000^*
Shares after: 20,000
Date: 27 Mar 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 15,000
Exercise price: $0.0100

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

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