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  4. [Form 4] SEALSQ Corp Insider Trading Activity

SEALSQ insider sells 15K shares after $0.01 option

A SEALSQ Corp vice president exercised 15,000 options at $0.01 and sold 15,000 shares around $2.40 under a pre-arranged Rule 10b5-1 plan.

Filing Impact
(Neutral)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

SEALSQ Corp (LAES) insider Enguent Jean-Pierre, Vice President, R&DSS, reported option-related trades in Ordinary Shares. On September 1, 2026 he exercised options for 15,000 shares at an exercise price of $0.01 per share, and on September 3, 2026 he sold 15,000 shares at a weighted average price of $2.402 per share in multiple transactions between $2.38 and $2.4253. Both the option exercise and the subsequent sales were effected under a Rule 10b5-1 trading plan adopted on October 13, 2025.

Positive

  • None.

Negative

  • None.
Insider Enguent Jean-Pierre
Role Vice President, R&DSS
Sold 15,000 shs ($36K)
Approx. gross sale proceeds $36K
Approx. exercise cost $150.00
Type Security Shares Price Value
Sale Ordinary Shares F1, F2 15,000 $2.402 $36K
Exercise Employee Stock Option Plan (right to buy) F3 15,000 $0.00 $0.00
Exercise Ordinary Shares 15,000 $0.01 $150.00
Holdings After Transaction: Employee Stock Option Plan (right to buy) — 0 contracts (Direct); Ordinary Shares — 0 shares (Direct)
Footnotes (3)
  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 $2.38 to $2.4253, 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 option 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.
Shares sold 15,000 shares Ordinary Shares sold on September 3, 2026
Weighted average sale price $2.402 per share Ordinary Shares sold on September 3, 2026 in multiple trades
Sale price range $2.38–$2.4253 per share Price range for the 15,000 shares sold on September 3, 2026
Options exercised 15,000 options Options for Ordinary Shares exercised on September 1, 2026
Option exercise price $0.01 per share Exercise price for 15,000 options exercised on September 1, 2026
Option expiration date April 30, 2032 Scheduled expiration for the exercised options before exercise
Rule 10b5-1 plan adoption date October 13, 2025 Date the reporting person adopted the trading plan used for these transactions
Rule 10b5-1 trading plan regulatory
"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."
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 financial
"Employee Stock Option Plan (right to buy)"

FAQ

What insider transaction did SEALSQ Corp (LAES) report for Enguent Jean-Pierre?
SEALSQ Corp reported that Enguent Jean-Pierre exercised options for 15,000 Ordinary Shares on September 1, 2026 at $0.01 per share and then sold 15,000 shares on September 3, 2026 at a weighted average price of $2.402 per share.

At what prices were the SEALSQ (LAES) insider’s shares sold?
The filing states a weighted average sale price of $2.402 per share. The 15,000 shares were sold in multiple transactions at prices ranging from $2.38 to $2.4253 per share.

Were the recent SEALSQ (LAES) insider transactions under a Rule 10b5-1 plan?
Yes. Both the sale of 15,000 Ordinary Shares on September 3, 2026 and the option exercise for 15,000 shares on September 1, 2026 were effected under a Rule 10b5-1 trading plan adopted on October 13, 2025.

What options did the SEALSQ (LAES) insider exercise in this Form 4?
Enguent Jean-Pierre exercised 15,000 options for Ordinary Shares on September 1, 2026 at an exercise price of $0.01 per share. These options were part of an Employee Stock Option Plan and were scheduled to expire on April 30, 2032.

How many SEALSQ (LAES) shares did the insider sell in the reported transaction?
The insider sold 15,000 Ordinary Shares on September 3, 2026. The filing notes a weighted average sale price of $2.402 per share, with individual trade prices ranging between $2.38 and $2.4253.

What is the relation between the option exercise and the share sale at SEALSQ (LAES)?
The insider exercised 15,000 options for Ordinary Shares at $0.01 per share on September 1, 2026, and then sold 15,000 shares on September 3, 2026 at a weighted average of $2.402, indicating an exercise-and-sell sequence.

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 4UNITED 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)
COINTRIN1216
(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
Vice President, R&DSS
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
09/01/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Ordinary Shares09/01/2026M15,000A$0.0115,000D
Ordinary Shares09/03/2026(1)S15,000D$2.402(2)0D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Employee Stock Option Plan (right to buy)$0.0109/01/2026(3)M15,00005/01/202604/30/2032Ordinary Shares15,000$00D
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 $2.38 to $2.4253, 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 option 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-Fact09/03/2026
** Signature of Reporting PersonDate
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