Timothy Mark Dyer - 18 Mar 2026 Form 3 Insider Report for Addex Therapeutics Ltd. (ADXN)

Role: Chief Executive Officer, Director, 10%+ Owner
Signature: /s/ Timothy Mark Dyer
Issuer symbol: ADXN
Transactions as of: 18 Mar 2026
Net transactions value: $0
Form type: 3
Filing time: 18 Mar 2026, 11:07:06 UTC
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Dyer Timothy Mark	Chief Executive Officer, Director, 10%+ Owner	CHEMIN DES MINES 9, GENEVA, SWITZERLAND	/s/ Timothy Mark Dyer	18 Mar 2026	0001830908

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	ADXN	Common stock						16,848,979	18 Mar 2026	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	ADXN	Stock-Option (Right to Buy)							18 Mar 2026	Common stock	3,369,796	$0.0640	Direct	F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents 16,848,979 shares of Common Stock listed on SIX Swiss Exchange.
F2	The stock-options vest on equal monthly installments over a 4-year period beginning at the exercisable date. Each stock-option grants the right to purchase one ADXN share listed on SIX Swiss Exchange.
F3	The exercise price is reported in U.S. dollars and reflects the conversion from CHF to USD at an exchange rate of $ 1.2769 per CHF 1.00 as of March 12, 2026.