Was the SEALSQ Corp (LAES) CEO’s share sale under a Rule 10b5-1 trading plan?

Yes. The Form 4 states the sales were effected under a Rule 10b5-1 trading plan adopted on October 12, 2025. Such plans allow pre-scheduled trades, reducing the significance of the specific timing of this transaction.

SEALSQ Corp (LAES) CEO sells 300 shares in open-market trade under 10b5-1 plan

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

SEALSQ Corp Chief Executive Officer Carlos Moreira reported an open-market sale of Ordinary Shares. On June 5, 2026, he sold 300 shares of SEALSQ Corp at $3.51 per share and held 696,215 shares afterward. The sale was made under a Rule 10b5-1 trading plan adopted on October 12, 2025, indicating it was pre-arranged rather than a discretionary trade.

Insider Trade Summary 10b5-1

Net Seller: 300 shares ($1,053)

Net Sell 1 txn

Insider Moreira Carlos

Role Chief Executive Officer

Sold 300 shs ($1K)

Type	Security	Shares	Price	Value
Sale	Ordinary Shares	300	$3.51	$1K

Holdings After Transaction: Ordinary Shares — 696,215 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares sold: 300 shares Sale price: $3.51 per share Shares held after: 696,215 shares +2 more

5 metrics

Shares sold 300 shares Ordinary Shares sold on June 5, 2026

Sale price $3.51 per share Open-market sale price on June 5, 2026

Shares held after 696,215 shares Direct ownership following the transaction

Transaction code S Sale in open market or private transaction

Trading plan adoption date October 12, 2025 Rule 10b5-1 plan used for this sale

Key Terms

Rule 10b5-1 trading plan, open-market sale, Ordinary Shares, Form 4

4 terms

Rule 10b5-1 trading plan regulatory

"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted"

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.

open-market sale financial

"transaction_action": "open-market sale","transaction_code_description": "Sale in open market"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Ordinary Shares financial

""security_title": "Ordinary Shares","transaction_date""

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.

Form 4 regulatory

"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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Form 4 Insider Transactions: What Each Field Means →

06/05/2026 - 05:20 PM

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).

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^*

Moreira Carlos

(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)

X	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/05/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Ordinary Shares	06/05/2026⁽¹⁾		S		300	D	$3.51	696,215	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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 12, 2025.

	/s/ John O'Hara, Attorney-in-Fact	06/05/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What did SEALSQ Corp (LAES) CEO Carlos Moreira report in this Form 4?

Carlos Moreira reported an open-market sale of SEALSQ Corp Ordinary Shares. He sold 300 shares at $3.51 per share on June 5, 2026 and held 696,215 shares immediately after the transaction.

How many SEALSQ Corp (LAES) shares did the CEO sell and at what price?

The CEO sold 300 Ordinary Shares of SEALSQ Corp at a price of $3.51 per share. This was a single reported open-market transaction on June 5, 2026, under a pre-arranged trading plan.

How many SEALSQ Corp (LAES) shares does the CEO hold after this sale?

After the reported sale, the CEO directly holds 696,215 Ordinary Shares of SEALSQ Corp. This figure reflects his position immediately following the June 5, 2026 open-market transaction disclosed in the Form 4 filing.

What type of transaction did SEALSQ Corp (LAES) disclose for its CEO in this filing?

The filing discloses an open-market sale of Ordinary Shares by the CEO. The transaction code is “S,” described as a sale in open market or private transaction, with 300 shares sold at $3.51 per share.