SEALSQ VP Jean-Pierre Enguent sells 35,000 shares

The sale and both option exercises were reported under a Rule 10b5-1 plan adopted October 13, 2025; a separate award covered 50,000 options.

Available on EDGAR 11/03/2026 - 05:30 PM EST Accepted by SEC EDGAR 11/03/2026 - 05:30 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

SEALSQ Corp Vice President, R&DSS Jean-Pierre Enguent sold 35,000 ordinary shares on November 3, 2026, at a weighted average of $1.3808 per share; reported sale prices ranged from $1.3615 to $1.412. The sale was made under a Rule 10b5-1 trading plan adopted October 13, 2025. On November 2, he reported option exercises for 15,000 and 20,000 ordinary shares at $0.01 per share, also under that plan. Corresponding ordinary-share entries report acquisitions of those amounts. He was also granted 50,000 options with a $0.01 exercise price and an expiration date of April 30, 2032.

Insider Trade Summary 10b5-1

Exercise and sale activity reported; no spread calculated

Exercise and Sale 6 txns

Insider Enguent Jean-Pierre

Role Vice President, R&DSS

Sold 35,000 shs ($48K)

Approx. gross sale proceeds $48K

Approx. exercise cost $350.00

Share of Position Sold 100%

Type	Security	Shares	Price	Value
Sale	Ordinary Shares F1, F2	35,000	$1.3808	$48K
Exercise	Employee Stock Option Plan (right to buy) F3	15,000	$0.00	$0.00
Grant/Award	Employee Stock Option Plan (right to buy)	50,000	$0.00	$0.00
Exercise	Employee Stock Option Plan (right to buy) F4	20,000	$0.00	$0.00
Exercise	Ordinary Shares	15,000	$0.01	$150.00
Exercise	Ordinary Shares	20,000	$0.01	$200.00

Holdings After Transaction: Employee Stock Option Plan (right to buy) — 30,000 contracts (Direct); Ordinary Shares — 0 shares (Direct)

Holdings Before and After: Employee Stock Option Plan (right to buy), 15,000 to 30,000 contracts (Direct); Ordinary Shares, 0 to 0 shares (Direct)

Footnotes (4)

1. F1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 13, 2025.
2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.3615 to $1.412, inclusive. The reporting person undertakes to provide to SEALSQ Corp, any security holder of SEALSQ Corp, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4.
3. F3. The options exercise reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 13, 2025.
4. F4. The options exercise reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 13, 2025.

Key Figures

Shares sold: 35,000 ordinary shares Weighted average sale price: $1.3808 per share Sale price range: $1.3615 to $1.412 per share +4 more

7 metrics

Shares sold 35,000 ordinary shares November 3, 2026

Weighted average sale price $1.3808 per share 35,000 shares sold November 3, 2026

Sale price range $1.3615 to $1.412 per share Prices for the November 3, 2026 sales

Options exercised 15,000 shares November 2, 2026; $0.01 exercise price per share

Options exercised 20,000 shares November 2, 2026; $0.01 exercise price per share

Options granted 50,000 options $0.01 exercise price; expiration April 30, 2032

Exercise price $0.01 per share Reported option exercises and option grant

Key Terms

Rule 10b5-1 trading plan, weighted average price, Employee Stock Option Plan (right to buy), exercise price

4 terms

Rule 10b5-1 trading plan regulatory

"pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price financial

"The price reported in Column 4 is a weighted average price"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Employee Stock Option Plan (right to buy) financial

"Employee Stock Option Plan (right to buy)"

exercise price financial

"options with a $0.01 exercise price"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

FAQ

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

How many LAES shares did Jean-Pierre Enguent sell?

Jean-Pierre Enguent sold 35,000 ordinary shares on November 3, 2026, at a weighted average of $1.3808 per share. Individual sale prices ranged from $1.3615 to $1.412. The sale was made under a Rule 10b5-1 trading plan adopted October 13, 2025.

What option grants and exercises did Jean-Pierre Enguent report for LAES?

He reported option exercises for 15,000 and 20,000 ordinary shares at an exercise price of $0.01 per share, plus a grant of 50,000 options with a $0.01 exercise price and an expiration date of April 30, 2032. The two option exercises were reported under a plan adopted October 13, 2025.

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

Form 4 Insider Transactions: What Each Field Means →

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SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Enguent Jean-Pierre

(Last) (First) (Middle)

C/O SEALSQ CORP

AVENUE LOUIS-CASAI 58

(Street)

COINTRIN 1216

(City) (State) (Zip)

SWITZERLAND

(Country)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Vice President, R&DSS

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/02/2026

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

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

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

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Ordinary Shares	11/02/2026		M		15,000	A	$0.01	15,000	D
Ordinary Shares	11/02/2026		M		20,000	A	$0.01	35,000	D
Ordinary Shares	11/03/2026(1)		S		35,000	D	$1.3808(2)	0	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option Plan (right to buy)	$0.01	11/02/2026(3)		M			15,000	10/05/2026	04/30/2032	Ordinary Shares	15,000	$0	0	D
Employee Stock Option Plan (right to buy)	$0.01	11/02/2026		A		50,000		11/02/2026	04/30/2032	Ordinary Shares	50,000	$0	50,000	D
Employee Stock Option Plan (right to buy)	$0.01	11/02/2026(4)		M			20,000	11/02/2026	04/30/2032	Ordinary Shares	20,000	$0	30,000	D

Explanation of Responses:

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 13, 2025.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.3615 to $1.412, inclusive. The reporting person undertakes to provide to SEALSQ Corp, any security holder of SEALSQ Corp, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4.

3. The options exercise reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 13, 2025.

4. The options exercise reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 13, 2025.

	/s/ John O'Hara, Attorney-in-Fact	11/03/2026
	** 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 4 (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 4: SEC 1474 (03-26)