Addex Pharmaceuticals Annual Report 2023

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FY2023 Annual Report · Addex Pharmaceuticals

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Allosteric Modulators for
Human Health

Annual Report 2023

Addex Therapeutics Annual Report 2023

Contents

Letter to Shareholders

Financial Review

Corporate Governance Report

Compensation Report

Consolidated Financial Statements

Statutory Financial Statements

Key Facts / Addex Therapeutics

Focus:

Disease area:

Programs:

Oral small molecule allosteric modulation-based drug discovery and
development against diseases with high unmet medical needs.

Central Nervous System (‘‘CNS’’)

ADX71149 for epilepsy (licensed to Janssen Pharmaceuticals Inc.)
Dipraglurant for Parkinson’s disease levodopa-induced dyskinesia
Dipraglurant for post-stroke / traumatic brain injury (TBI) recovery
GABAB PAM for substance use disorders (licensed to Indivior PLC)
GABAB PAM for chronic cough

Total full-time equivalent employees and
consultants as of December 31, 2023:

Stock symbol / exchange:

ADXN (ISIN:CH0029850754) / SIX Swiss Exchange

ADXN (American Depositary Shares) / Nasdaq Stock Market

Shares issued as of December 31, 2023:

184,354,496

Cash as of December 31, 2023:

3,865,481

Headquarter:

Geneva, Switzerland

Page 2 of 71

Addex Therapeutics Annual Report 2023

Letter to Shareholders

Dear Shareholders,

In 2023, we focused our efforts on advancing our collaboration with Indivior and securing the financial resources to advance our
portfolio of preclinical and clinical stage programs, while our partner, Janssen Pharmaceuticals Inc., advanced the development of
ADX71149 through a phase 2a clinical study in epilepsy patients.

As a result of these efforts we strengthened our balance sheet in April 2023 with an offering raising gross proceeds of $5.0 million
from the sale of new shares in the form of American Depository Shares on the Nasdaq Stock Market and in April 2024 secured USD
63 million from a syndicate of investors led by Perceptive Advisors. The financing transaction led by Perceptive Advisors has been
structured as a carve-out of our allosteric modulation discovery platform and the majority of our preclinical programs into a new private
company, Neurosterix in which we have retained a 20% equity interest. Neurosterix has been capitalized with USD 63 million in equity
financing. As part of the transaction, we received CHF 5.0 million and have transferred the majority of our staff and facilities to
Neurosterix and entered into a service agreement with Neurosterix to secure the resources necessary for us to continue to implement
our business strategy.

We have retained our partnerships with Janssen Pharmaceuticals, Inc. and Indivior PLC, as well as unpartnered clinical stage assets
including dipraglurant for Parkinson’s disease and post-stroke / traumatic brain injury (“TBI”) recovery and our preclinical gamma-
aminobutyric acid subtype B receptor (“GABAB”) positive allosteric modulators (“PAMs”) program for chronic cough.

Our partner, Janssen Pharmaceuticals Inc., made excellent progress in advancing the ADX71149 phase 2a proof of concept clinical
study in epilepsy patients with the completion of enrollment of 60 patients in cohort 1 and 50 patients in cohort 2. We anticipate data
from this study in the second quarter of 2024.

In addition, we made substantial progress in our collaboration with our partner, Indivior, in advancing our GABAB PAM program
towards selection of development candidates for substance use disorder and chronic cough. During 2023, we extended our research
collaboration with Indivior and they agreed additional research funding of CHF 2.7 million, bringing total research funding since 2018
to more than CHF 16.5 million, demonstrating their strong commitment to our partnership.

Furthermore, we made excellent progress in our unpartnered preclinical portfolio which was subsequently transferred in April 2024 to
Neurosterix:

 Our muscarinic acetylcholine receptor subtype 4 (“M4”) PAM program for the treatment of schizophrenia and other
psychoses has rapidly advanced multiple differentiated novel chemical series through lead optimization. As a result, we have
selected a clinical candidate which is being prepared to enter investigational new drug (“IND”) enabling studies and have
multiple novel back up series of compounds in late lead optimization.

 We secured a grant from Eurostars/Innosuisse to advance our metabotropic glutamate receptor subtype 2 (“mGlu2”)
negative allosteric modulators (“NAM”) program for mild neurocognitive disorders and as a result have made solid progress
in advancing multiple novel lead series of compounds in lead optimization.

 We were forced to slow down the development of our metabotropic glutamate receptor subtype 7 (“mGlu7”) NAM program
for stress related disorders, which had delivered a drug candidate ready for IND enabling studies, due to limited financial
resources.

We continue to prepare dipraglurant for further development in dyskinesia associated with Parkinson’s disease and post stroke / TBI
recovery as well as pursue discussions with potential partners to secure the financial resources necessary to advance development.

We have made significant progress in a difficult year and would like to acknowledge and thank our employees and collaboration
partners for their dedication, loyalty and perseverance. We would also like to thank our shareholders for their continued support.

Vincent Lawton
Chairman of the Board

Tim Dyer
Chief Executive Officer

Page 3 of 71

Addex Therapeutics Annual Report 2023│Financial Review

Financial Review

The following review and discussion of the financial results for 2023 should be read in conjunction with the consolidated financial
statements and related notes, which have been prepared in accordance with International Financial Reporting Standards and are
presented in this Annual Report.

We are a clinical development-stage biopharmaceutical company focused on building a sustainable pharmaceutical business around
our expertise in the discovery and development of oral small molecule allosteric modulators of G-protein coupled receptors. As a
result, commercialization is currently limited to licensing, and research and development services related to selected discovery and
development stage programs.

During 2023, our financial results are driven primarily by discovery activities related to M4 PAM for the treatment of schizophrenia
and other psychosis, as well as related to our GABAB PAM partnership with Indivior PLC (“Indivior”). In addition, we were engaged
in a number of business development and financing activities related to securing resources to advance our portfolio, including entering
into collaborations with patient advocacy groups, academic institutions and governmental organizations to characterize our portfolio
of drug candidates and access expertise to complement our internal resources. At December 31, 2023, our headcount was 23 full
time equivalents (FTEs) compared to 24 FTEs at December 31, 2022. Our average headcount was 24 in 2023 (compared to 25 in
2022). In addition to our headcount, we engaged a number of consultants and service providers to complement our internal resources.

Research and development expenditure decreased to CHF 6.9 million and general and administrative expenses decreased to CHF
5.0 million. CHF 1.6 million has been recognized as income in the year and our net loss decreased to CHF 10.6 million. We ended
the year with a cash position of CHF 3.9 million.

Results of operations

The following table presents our consolidated results of operations for the fiscal years 2023 and 2022:

For the years
ended December 31

Amounts in millions of Swiss francs

Revenue from contract with customer…..
Other income……………………………...
Total Income……………………………...
Research and development expenses....
General and administrative expenses.....
Total operating costs……………………
Operating loss…………………………...
Finance result, net………………………...
Net loss for the year………………….....

2023

1.6
-
1.6
(6.9)
(5.0)
(11.9)
(10.3)
(0.3)
(10.6)

2022

1.4
-
1.4
(14.6)
(7.3)
(21.9)
(20.5)
(0.3)
(20.8)

Income
Income increased by CHF 0.2 million in 2023 compared to 2022 primarily due to increased research funding from Indivior which is
recognized in income as related costs are incurred.

Research and development expenses
R&D expenses decreased by CHF 7.7 million to CHF 6.9 million in 2023, compared to CHF 14.6 million in 2022. The decrease
primarily relates to outsourced R&D costs for CHF 7.3 million mostly driven by our dipraglurant clinical development activities
terminated on June 17, 2022. R&D expenses consist primarily of costs associated with research, preclinical and clinical testing and
related staff costs. They also include depreciation of laboratory equipment, costs of materials used in research, costs associated with
renting and operating facilities and equipment, as well as fees paid to consultants, patent costs, other outside service fees and
overhead costs. These expenses include costs for proprietary and third-party R&D.

General and administrative expenses
G&A expenses decreased by CHF 2.3 million to CHF 5.0 million in 2023, compared to CHF 7.3 million in 2022, primarily due to
decreased D&O insurance costs of CHF 1.0 million and decreased staff costs primarily driven by reduced share-based service costs
of CHF 1.1 million.

Finance Result, net
Finance loss net remained stable at CHF 0.3 million in 2023 and 2022 mainly due to currency exchange differences on U.S dollar
cash deposits following the strengthening of the Swiss franc.

Net loss for the year
The net loss for the 2023 financial year was CHF 10.6 million compared to CHF 20.8 million for 2022. The decrease in the net loss of
CHF 10.2 million is primarily due to decreased outsourced R&D costs for CHF 7.3 million and to a lesser extent to decreased G&A

Page 4 of 71

Addex Therapeutics Annual Report 2023│Financial Review

expenses for CHF 2.3 million related to the D&O insurance and share-based service costs. Basic and diluted loss per share decreased
to CHF 0.14 for 2023, compared to CHF 0.46 for 2022.This decrease is due to a decrease in the loss and an increase in the weighted
average number of shares issued.

Balance sheet & cash flows

Cash and cash equivalents decreased by CHF 3.1 million to CHF 3.9 million at December 31, 2023, compared to CHF 7.0 million at
December 31, 2022. During the same period, total shareholders’ equity decreased by CHF 3.8 million and amounted to CHF 1.1
million at December 31, 2023 compared to CHF 4.9 million at December 31, 2022. Decreases in both cash and cash equivalents and
total shareholders’ equity are primarily due to the net loss of CHF 10.6 million adjusted for CHF 1.8 million of share-based
compensation expense, partially offset by the net proceeds of CHF 4.3 million from the offering executed on April 3, 2023 and
CHF 1.2 million from the sale of treasury shares under the sale agency agreement with Kepler Cheuvreux.

Post balance sheet event

The Group sold 3,050,665 treasury shares for a gross amount of CHF 0.2 million under the sale agency agreement with Kepler
Cheuvreux, between the closing date and the approval of these consolidated financial statements by the board of directors.

The divestment of the discovery platform includes the transfer of the associated research and development staff, with the provision
of a service agreement to allow key members of staff to support us in achieving our business strategy. As of the date of the
Transaction, all employees of Addex, other than our Head of Finance, became employees of Neurosterix. Pursuant to the service
agreement, certain former Addex employees, including our Chief Executive Officer, will dedicate a portion of their time to Addex.

Shares and shareholders’ information

At December 31, 2023, the Company had 184,354,496 (2022: 115,348,311) issued shares and a free float of approximately 58.14%.
Of the issued shares at December 31, 2023, 59,159,103 shares (at December 31, 2022: 38,214,291 shares) are held by Addex
Pharma SA and recorded as treasury shares. The closing share price was CHF 0.046 at December 31, 2023 compared to CHF 0.10
at December 31, 2022 and the market capitalization was CHF 8.5 million compared to CHF 11.7 million, respectively.

2024 Outlook

We anticipate reporting data from the ADX71149 phase 2a epilepsy clinical study being executed by our partner Janssen
Pharmaceuticals Inc in the second quarter of 2024.

We are also continuing discussions with potential strategic partners to reinitiate Phase 2 development of dipraglurant in PD-LID or
post-stroke/ TBI recovery. Furthermore, we expect our partner, Indivior, to advance a GABAB PAM clinical candidate into IND enabling
studies in late 2024.

Page 5 of 71

Addex Therapeutics Annual Report 2023│Corporate Governance Report

Corporate Governance Report

General information

Addex Therapeutics Ltd’s articles of association (the “Articles”), organizational rules (the “Organizational Rules”) and policies provide
the principles of Corporate Governance. These documents are available on Addex’s website at
the basis
https://www.addextherapeutics.com/en/investors/corporate-governance/. This report has been prepared in accordance with the SIX
Swiss Exchange Directive on Information Relating to Corporate Governance dated June 29, 2022.

for

1. Group structure and shareholders

1.1. Group structure

1.1.1. Description of Addex’ operational group structure

Addex Therapeutics Ltd (“Addex” or the “Company”; CHE-113.514.094) is the holding and finance company of the Group. Addex
Pharma SA (CHE-109.561.624), based in Geneva, Switzerland, a 100% subsidiary of the Company, is in charge of research,
development, registration, commercialization, and holds the Group’s intellectual property. Addex Pharma SA, with registered office
at Chemin des Aulx 12, P.O. Box 68, CH-1228 Plan-les-Ouates, has a share capital of CHF 3,987,492 divided into 3,987,492
registered shares with a nominal value of CHF 1 each. Addex Pharmaceuticals France SAS, based in Archamps, France, with
registered office at 72, Rue Georges de Mestral, Athena 1, Archamps Technopole, 74160 Archamps, France, has a share capital of
EUR 37,000 divided into 37,000 registered shares with a nominal value of EUR 1 each, fully-owned by the Company. Addex
Pharmaceuticals Inc, a company incorporated on May 29, 2019, registered in Delaware with its principal registered office at 1968 S
Coast HWY #1915, Laguna Beach, CA 92651, USA, has a share capital of USD 1 divided into 1,000 shares fully owned by the
Company.

1.1.2. Listed company

Addex has its registered office c/o Addex Pharma SA, Chemin des Aulx 12, P.O. Box 68, CH-1228 Plan-les-Ouates, Geneva,
Switzerland. Its shares have been listed on the SIX Swiss Exchange (SIX) since May 21, 2007 under the Swiss security number
(Valorennummer) 2985075. The ISIN is CH0029850754, the common code is 030039254 and the ticker symbol is ADXN. Since
January 29, 2020, its shares have been listed on the Nasdaq Stock Market (Nasdaq) under the symbol “ADXN” in the form of
American Depositary Shares, or ADSs. On October 23, 2023, we changed our ratio of ordinary shares to ADS from six to one
to the new ADS ratio of one hundred and twenty to one (the “ADS Ratio Change"). Except as otherwise indicated, all information
in this annual report reflects the ADS Ratio Change. As of December 31, 2023, Addex' market capitalization was approximately
CHF 8.5 million.

1.1.3. Non-listed company

For an overview of the operational non-listed consolidated entities please refer to section 1.1.1 above and page 62 in the section
financial statements of this Annual Report.

1.2. Significant shareholders

As far as can be ascertained from the information available, the following shareholders owned 3% or more of the Company’s voting
rights as at December 31, 2023, based on disclosure notifications published to SIX, or information otherwise available to the Company:

% of voting rights2 % of capital2

Shareholder
Addex Pharma SA3
Lock-up group4
Growth Equity Opportunities Fund IV, LLC5
Tim Dyer

33.19%
9.77%
3.17%
4.12%
1 This table presents the number of shares held by the shareholders listed therein. The derivative holdings held by such shareholders are not included.
2 Based on the share capital registered in the commercial register as of December 31, 2023 (i.e. CHF 1,782,344.96 divided into 178,234,496 registered shares excluding 6,120,000
shares issued out of conditional capital from December 12, 2023 to December 31, 2023 and registered in the commercial register on February 20, 2024 in accordance with Swiss
corporate law).
3 The beneficial owner is Addex Therapeutics Ltd, Chemin des Aulx 12, CH-1228 Plan-les-Ouates, Switzerland. The number of treasury shares held by Addex Pharma SA indicated
above differs from the information published in the latest SIX notification published on December 19, 2023 and is based on the information from our share register as of December 31,
2023.
4 Lock-up group established by a lock-up agreement among the following beneficial owners following the exercise of options granted to Board Members, Executive Managers and
employees: Tim Dyer, who owns 5.34% of the voting rights, and 24 other shareholders, who individually hold less than 3% of the voting rights. The lock-up agreement will terminate on
May 11, 2027.
5 The beneficial owner is New Enterprise Associates Timonium MD 21093, USA.

Shares held1
59,159,103
17,417,140
5,648,690
7,340,097

33.19%
9.77%
3.17%
4.12%

For a comprehensive list of notifications of shareholdings received during 2023 pursuant to article 120 of the Swiss Federal Act on
Financial Market Infrastructures and Market Conduct in Securities and Derivatives Trading (FMIA) and its implementing ordinances,
refer to the SIX website (https://www.ser-ag.com/en/resources/notifications-market-participants/significant-shareholders.html#/).

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Addex Therapeutics Annual Report 2023│Corporate Governance Report

1.3. Cross-shareholdings

There are no cross-shareholdings in terms of capital shareholdings or voting rights in excess of 5%.

2. Capital structure

There were 2,432 shareholders registered in the share register on December 31, 2023. The distribution of shareholdings is divided
as follows:

Number of shares
1 to 100
101 to 1,000
1,001 to 10,000
10,001 to 100,000
100,001 to 1,000,000
1,000,001 to 10,000,000
Above 10,000,000
Total

Number of registered shareholders on December 31, 2023
203
775
963
420
64
5
2
2,432

The shareholder base on December 31, 2023 was constituted as follows:

Shareholder structure according to category of investors
(weighted by number of shares)
31.69%
Private persons
4.06%
Institutional shareholders
Treasury shares held by the Group
32.09%
Holder of ADSs listed on Nasdaq not registered in the share register 17.59%
14.57%
Non-identified
100.00%
Total

Shareholder structure by country
(weighted by number of shares)
3.14%
United States
27.44%
Switzerland
Treasury shares held by the Group
32.09%
Holder of ADSs listed on Nasdaq not registered in the share register 17.59%
Other countries
Non-identified
Total

5.17%
14.57%
100.00%

2.1. Capital

As of December 31, 2023, the share capital amounted to CHF 1,782,344.96 consisting of 178,234,496 issued shares with a nominal
value of CHF 0.01 per share. As of December 31, 2023, the Company, indirectly, held 59,159,103 of its own shares. These shares
are recorded as treasury shares.

2.2. Capital band and conditional capital

Capital band

As of December 31, 2023, and according to article 3b of the Articles, the Company has a capital band ranging from CHF 1,782,344.96
(lower limit) to CHF 2,673,517.44 (upper limit), authorizing the Board to increase the share capital within the capital band, once or
several times and in any amounts, until December 18, 2028 or until an earlier expiry of the capital range. The capital increase may
be effected by issuing up to 89,117,248 fully paid-in registered shares with a par value of CHF 0.01 each or by increasing the par
value of the existing shares within the limit of the capital range. The capital band does not authorize the Board to reduce the share
capital. If the share capital increases as a result of an increase from conditional capital pursuant to Article 3c A) and B), the Board
shall increase the lower and upper limits of the capital band accordingly.

In the event of an issue of shares, the subscription and acquisition of the new shares as well as any subsequent transfer of the
shares shall be subject to the restrictions pursuant to Article 5 of the Articles.

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Addex Therapeutics Annual Report 2023│Corporate Governance Report

Conditional share capital

As of December 31, 2023 and according to article 3c(A) of the Articles, the share capital of the Company may be increased by a
maximum aggregate amount of CHF 413,349.92 through the issuance of a maximum of 41,334,992 registered shares, which shall
be fully paid-in, with a par value of CHF 0.01 per share by the exercise of option rights or subscription rights attached to bons de
jouissance which the employees, directors, contractors and/or consultants of the Company or a group company are granted according
to respective regulations of the Board. The pre-emptive rights of the shareholders are excluded. The acquisition of registered shares
through the exercise of option rights or subscription rights granted to the holders of bons de jouissance and the subsequent transfer
of the registered shares shall be subject to the transfer restrictions provided in article 5 of the Articles.

According to article 3c(B) of the Articles, the share capital of the Company may be increased by a maximum aggregate amount of
CHF 477,822.56 through the issuance of a maximum of 47,782,256 registered shares, which shall be fully paid-in, with a par value
of CHF 0.01 per share by the exercise of option and/or conversion rights which are granted to shareholders of the Company and/or
in connection with the issue of convertible debt instruments ,bonds, loans, options, warrants or similar obligations or other financial
instruments by the Company or another group company. In the case of such grants of option and/or conversion rights, the advanced
subscription right of shareholders is excluded. The holders of option and/or conversion rights are entitled to receive the new shares.
The Board shall determine the terms of the option and/or conversion rights. The acquisition of registered shares through the exercise
of option or conversion rights and the subsequent transfer of the registered shares shall be subject to the transfer restrictions provided
in article 5 of the Articles.

2.3. Changes in capital

Nominal share capital
December 31, 2021
December 31, 2022
December 31, 2023(1)
(1) The amount of CHF 1,782,345 corresponds to the share capital effectively registered in the commercial register as of December 31, 2023. From December 12, 2023 to
December 31, 2023, additional shares were issued out of conditional capital at a nominal value of CHF 0.01 each for a total amount of CHF 61,200. The 6,120,000 new
issued shares were registered in the commercial register on February 20, 2024.

CHF 49,272,952
CHF 1,153,483
CHF 1,782,345

Conditional share capital
December 31, 2021
December 31, 2022
December 31, 2023(2)

CHF 24,636,476
CHF 151,976
CHF 891,173

(2) The amount of CHF 891,173 corresponds to the amount of conditional share capital stated in the articles of association as of December 31, 2023. From December 12, 2023
to December 31, 2023, 6,120,000 shares were issued out of the conditional capital, all of which were registered in the commercial register on February 20, 2024.

Authorized share capital (3)
December 31, 2021
December 31, 2022

CHF 24,636,476
-

(3) Under the new Swiss corporate law, which became effective on January 1, 2023, the instrument of the authorized share capital has been replaced with that of
the capital band.

Capital band
December 31, 2023

CHF 891,173

Changes in capital in 2021

On June 16, 2021, the shareholders increased the authorized capital from CHF 9,524,317 to CHF 24,636,476 expiring on June 16,
2023, and the conditional capital from CHF 16,424,317 to CHF 24,636,476.

On April 23, 2021, the Company increased its capital from CHF 39,748,635 to CHF 49,272,952 through the issue of 9,524,317 new
registered shares at nominal value of CHF 1 each out of the authorized capital.

On January 8, 2021, the Company increased its capital from CHF 32,848,635 to CHF 39,748,635 through the issue of 6,900,000 new
registered shares at nominal value of CHF 1 each, in connection with a global offering of shares.

Changes in capital in 2022

On December 15, 2022, the Company increased its share capital from CHF 979,094 to CHF 1,153,483 through the issuance of
17,438,883 new registered shares at a nominal value of CHF 0.01 each out of the conditional capital following the exercise of
17,438,883 equity incentive units at a strike price of CHF 0.13 by Board Members, Executive Managers and other employees on
October 26, 2022.

On October 31, 2022, the Company increased its share capital from CHF 652,730 to CHF 979,094 through the issuance of 32,636,476
new registered shares at nominal value of CHF 0.01 each out of the authorized capital.

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Addex Therapeutics Annual Report 2023│Corporate Governance Report

On May 9, 2022, the shareholders (i) increased the authorized capital from CHF 8,636,476 to CHF 32,636,476 and extended its term
to May 9, 2024 and (ii) increased the conditional capital from CHF 24,636,476 to CHF 32,636,476. On the same date, the shareholders
approved the reduction of the nominal value from CHF 1 to CHF 0.01 of all 65,272,952 issued shares, and of all shares issuable from
the authorized capital and conditional capital. The approved reduction was registered by the Geneva’s commercial registry on July
19, 2022 and published on July 22, 2022, after the expiration of a period of two months from the publication in the Swiss Gazette of
Commerce of three calls to creditors. The Company's share capital was thus reduced by a total amount of CHF 64,602,222.48 from
CHF 65,272,952 to CHF 652,729.52, and its authorized capital and conditional capital were each reduced by a total amount of
CHF 32,310,111.24 from CHF 32,636,476 to CHF 326,634.76. The Company's total number of issued shares (i.e. 65,272,952) as
well as its total number of issuable shares out of the authorized capital and conditional capital were not affected by the reduction. The
amount corresponding to the nominal reduction of the Company's issued capital was allocated to capital contributions reserves and
there was no distribution to shareholders.

On February 2, 2022, the Company increased its share capital from CHF 49,272,952 to CHF 65,272,952 through the issuance of
16,000,000 new registered shares at nominal value of CHF 1 each out of the authorized capital.

Changes in capital in 2023

On December 19, 2023, the shareholders increased (i) the upper limit of the capital band allowing the Board of Directors to
increase the share capital up to CHF 2,673,517.44 at any time until December 18,2028 by issuing 89,117,248 shares at a
nominal value of CHF 0.01 each, and (ii) the conditional capital from CHF 276,879.70 to CHF 891,172.48. As of December
31, 2023, the conditional share capital decreased to CHF 829,972.48 following the issuance of 6,120,000 shares at a
nominal value of CHF0.01 through the exercise of pre-funded warrants by one investor from December 12, 2023 to
December 31, 2023. As a consequence, the share capital increased by CHF 61,200 and the upper limit of the capital
band increased to CHF 2,734,717.44. The 6,120,000 new issued shares have been registered in the commercial register
on February 20, 2024 in accordance with Swiss corporate law.

On December 13, 2023, the Company increased (i) its share capital by CHF 153,000 through the issuance of 15,300,000
new registered shares from its capital band to its fully owned subsidiary, Addex Pharma SA, at CHF 0.01 per share and
(ii) registered into commercial register a total of 29,986,185 new registered shares issued from its conditional capital. Of
these 29,986,185 shares, 17,458,950 were issued following the exercise of pre-funded warrants by one investor and
12,527,235 were issued following the exercise of equity incentive units by Board Members, Executive Managers and
employees.

On June 14, 2023, the Company increased its share capital by CHF 176,000 through the issuance of 17,600,000 new
registered shares from its capital band to its fully owned subsidiary, Addex Pharma SA, at CHF 0.01 per share.

On May 31, 2023, the shareholders (i) replaced the authorized capital with a capital band, as introduced under the new
Swiss corporate law, under a new article 3b in the Articles, thereby allowing the Board to increase the share capital up to
CHF 1,730,224.66 at any time until May 30, 2028 by issuing 57,674,155 shares at a nominal value of CHF 0.01 each, and (ii)
increased the conditional capital from CHF 151,975.93 to CHF 576,741.55.

For further information on changes in capital including changes in reserves, refer to the consolidated statements of changes in equity
as well as note 13 of the consolidated financial statements included in this Annual Report.

2.4. Shares and participation certificates

Addex has one class of shares, i.e. registered shares with a nominal value of CHF 0.01 per share. Each share is fully paid up and
carries one vote and equal dividend rights, with no privileges. The Company has no participation certificates (bons de participation /
Partizipationsscheine).

2.5. Dividend-right certificates

Equity sharing certificates are available for granting to employees and/or directors and/or consultants of the Company or any Group
company under the Group’s equity incentive plan. Equity sharing certificates do not form part of the share capital, have no nominal
value, and do not grant any right to vote nor to attend meetings of shareholders. The Company has 1,700 issued equity sharing
certificates (bons de jouissance/Genussscheine). Each equity sharing certificate grants the right to subscribe for 1,000 shares of the
Company and a right to liquidation proceeds of the Company calculated in accordance with article 34 of the Articles. The Company’s
shares and equity sharing certificates are not certificated. Shareholders and equity sharing certificate holders are not entitled to
request printing and delivery of certificates, however, any shareholder or equity sharing certificate holder may at any time request the
Company to issue a confirmation of their holdings.

2.6. Limitations on transferability of shares and nominee registration

A transfer of uncertified shares is affected by a corresponding entry in the books of a bank or depository institution following an
assignment in writing by the selling shareholder and notification of such assignment to Addex by the bank or the depository institution.
If following a transfer of shares a shareholder wishes to vote at or participate in a shareholders’ meeting, such shareholder must file
a share registration form in order to be registered in the share register with voting rights. Failing such registration, a shareholder may

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Addex Therapeutics Annual Report 2023│Corporate Governance Report

not vote at or participate in a shareholders meeting. The shares in the form of American Depository Shares or ADSs are held by
Citibank acting as depositary and voted at the shareholders’ meeting according to the instructions received from the ADS holders.

A purchaser of shares will be recorded in Addex’ share register as a shareholder with voting rights if the purchaser discloses its name,
citizenship or registered office and address and declares that it has acquired the shares in its own name and for its own account.

Article 5 of the Articles provides that a person or entity not explicitly stating in its registration request that it will hold the shares for its
own account (Nominee) may be entered as a shareholder in the share register with voting rights for shares up to a maximum of 5%
of the share capital as set forth in the commercial register. Shares held by a Nominee that exceed this limit are only registered in the
share register with voting rights if such Nominee discloses the name, address and shareholding of any person or legal entity for whose
account it is holding 1% or more of the share capital as set forth in the commercial register. The limit of 1% shall apply correspondingly
to Nominees who are related to one another through capital ownership or voting rights or have a common management or are
otherwise interrelated. A share being indivisible, hence only one representative of each share will be recognized. Furthermore, shares
may only be pledged in favor of the bank that administers the bank entries of such shares for the account of the pledging shareholders.
If the registration of shareholdings with voting rights was effected based on false information, the Board may cancel such registration
with retroactive effect.

There are no further rules in the Articles for granting exceptions and no exceptions were granted in 2023. The Articles do not contain
any provisions on the procedure and conditions for cancelling privileges and limitations on transferability.

2.7. Convertible bonds and options

As of December 31, 2023, the Company has no convertible or exchangeable bonds or loans outstanding. As of December 31, 2023,
the Company has a total of 63,246,964 options outstanding, divided into 61,676,618 warrants (“the Warrants”), and 1,570,346 shares
reserved for our employee incentive plans (the “ESOP Shares”).

The ESOP Shares are granted to non-executive directors, members of the executive management, employees or consultants in
accordance with our employee incentive plans. They vest over a four-year period and have a 1:1 subscription ratio, a ten-year
expiration term and an exercise price between CHF 0.043 to CHF 3.00.

5,866,898 of the Warrants have been granted to various investors in connection with the capital increase of March 28, 2018. Each of
the Warrants entitles the investors to subscribe without any specific conditions one registered share at an exercise price of CHF 3.43
until March 28, 2025.

The remaining 55,809,720 Warrants have been granted to the same institutional investor (the “Institutional Investor”) through three
offerings, on December 21, 2021, July 26, 2022 and April 5, 2023, respectively. Each of the Warrants entitles the Institutional Investor
to subscribe without any specific conditions one ADS representing 120 shares at an exercise price of USD 20.00 per ADS (CHF 0.15
per share equivalent) until April 5, 2028.

For information on equity incentive plans, refer to notes 13 and 14 of the consolidated financial statements included in this Annual
Report.

3. Board of Directors

3.1. Members of the Board of Directors

The following table sets forth the name, year joined the Board, position and directorship term of each member of the Board, followed
by a short description of each member’s business experience, education and activities. Except for Tim Dyer and Roger Mills, all Board
members are non-executive and none of them were members of the management of the Company or one of its subsidiaries in the
three financial years before 2023 or has significant business connections with the Company or one of its subsidiaries.

Name
Vincent Lawton
Raymond Hill
Tim Dyer
Roger Mills
Jake Nunn
Isaac Manke

Year of birth
1949
1945
1968
1957
1970
1977

Nationality
UK
UK
Swiss/UK
US/UK
US
US

First elected
2009
2015
2015
2017
2018
2018

Elected until
2024
2024
2024
2024
2024
2024

Board
Chairman
Member
Member
Member
Member
Member

Vincent Lawton
Chairman of the Board of Directors
Dr. Lawton was Vice President Merck Europe and Managing Director of MSD UK until he stepped down in 2006, after 26 years’ service
internationally for Merck & Co Inc. He was appointed CBE (Commander of the British Empire) by the Queen of England for services to
the Pharmaceutical Industry. During his tenure, MSD UK achieved sustained commercial success, launching many new medicines to
the market in a wide range of therapeutic areas, becoming the fastest growing company in the market over a number of years. He
worked in commercial, research and senior management roles in France, the US and Canada, Spain and throughout Europe. As

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President of the UK Industry Association, the ABPI, he negotiated industry pricing, worked with Government bodies to help establish
the UK globally as a leading center of clinical research. He served on the board of the UK regulatory authority (MHRA) from 2008 to
2015. He was a Senior Strategy Advisor for Imperial College Department of Medicine, University of London and serves as a consultant
to a number of leading healthcare organizations. He studied Psychology at the University of London and holds an undergraduate
degree and PhD.

Raymond Hill
Member of the Board of Directors
Dr. Hill was previously a member of the Board of Directors from the Annual General Meetings of 2008 until 2012. Currently Visiting
Professor of Pharmacology at Imperial College in London, and Chairman/Non-Executive Director of Avilex (Denmark), Chair of SAB
Asceneuron (Switzerland) and was NED of Orexo AB (Sweden) from 2008 to 2019. Prior to his retirement, he was Executive Director,
Licensing and External Research at Merck/MSD in Europe (2002 - 2008); Executive Director, Pharmacology (1990-2002) at the Merck
Neuroscience Research Centre and had oversight responsibility for Neuroscience research at the Banyu Research Labs in Tsukuba,
Japan (1997-2002). At Merck, he chaired a number of discovery project teams including those responsible for the marketed products
Maxalt® and Emend®. Dr. Hill received his academic training (BPharm PhD) at the University of London. He was awarded an Honorary
DSc by the University of Bradford in 2004 and was elected to Fellowship of the Academy of Medical Sciences in 2005. He was a
lecturer in Pharmacology at the University of Bristol School of Medicine from 1974 to 1983 and supervisor in Pharmacology at Downing
College, University of Cambridge from 1983 to 1988. He joined the pharmaceutical industry in 1983 as Head of Biology and founder
member of the Park Davis Research Unit at Cambridge. In 1988, he joined SK&F (United Kingdom) as Group Director of Pharmacology
and in 1990 moved to Merck. He is a past Council Member of the UK Academy of Medical Sciences and President Emeritus of the
British Pharmacological Society. He is a Visiting Professor at the University of Bristol and was a member of the UK Government
Advisory Council on the Misuse of Drugs from 2010 to 2019.

Tim Dyer
Member of the Board of Directors and Chief Executive Officer
Since co-founding Addex in 2002, Mr. Dyer has played a pivotal role in building the Addex Group, raising significant capital, including
Addex IPO and negotiating licensing agreements with pharmaceutical industry partners. Prior to founding Addex, he spent 10 years
with Price Waterhouse, or PW & PricewaterhouseCoopers, or PwC in the UK and Switzerland as part of the audit and business advisory
group. At PwC in Switzerland, Mr. Dyer’s responsibilities included managing the service delivery to a diverse portfolio of clients including
high growth start-up companies, international financial institutions and venture capital and investment companies. Mr. Dyer has
extensive experience in finance, corporate development, business operations and the building of start-up companies. He is a UK
Chartered Accountant and holds a BSc (Hons) in Biochemistry and Pharmacology from the University of Southampton, UK.

Roger Mills
Member of the Board of Directors and Chief Medical Officer
Dr. Mills brings more than 30 years of biopharmaceutical industry experience at both large global pharmaceutical companies and
smaller biotechnology companies, including Acadia Pharmaceuticals, Pfizer, Gilead Sciences, Abbott Laboratories and The Wellcome
Foundation, across a spectrum of disease areas. His extensive track record includes managing drug development programs, including
IND’s and NDAs as well as post-marketing and OTC products. Most recently, Dr. Mills was with Acadia Pharmaceuticals for nine years,
serving as Executive Vice President, Development and Chief Medical Officer. In this role, he oversaw the largest ever international
Phase 3 program in Parkinson’s Disease Psychosis and led its NDA submission to the FDA for NUPLAZID, which was subsequently
approved and remains the first and only medication approved in this indication. Dr. Mills currently serves as an Honorary Professor at
the University of Exeter, UK. He is a member of the Board of Directors of Enterin Inc, a US biopharmaceutical company. He received
his medical degree from Imperial College, Charing Cross Hospital Medical School, London, United Kingdom.

Jake Nunn
Member of the Board of Directors
Mr. Nunn has more than 25 years of experience in the life science industry as an investor, independent director, research analyst and
investment banker. He is currently an independent advisor to life science companies and a venture partner at SR One Capital
Management. Mr. Nunn was previously a venture advisor at New Enterprise Associates, or NEA, where he was a partner from 2006
to 2018, focusing on later-stage specialty pharmaceuticals, biotechnology and medical device investments and managing a number of
NEA’s public investments in healthcare. Mr. Nunn is a Director of Regulus Therapeutics (Nasdaq: RGLS) and Trevena, Inc. (Nasdaq:
TRVN). He previously was a Director of Dermira Inc. (acquired by Eli Lilly), Hyperion Therapeutics (acquired by Horizon Pharma PLC),
TriVascular (acquired by Endologix), Aciex Therapeutics (acquired by Nicox SA), Transcept Pharmaceuticals (merged with Paratek)
and a board observer at Vertiflex, Inc. (acquired by Boston Scientific). Prior to NEA, Mr. Nunn worked at MPM Capital as a Partner with
the MPM BioEquities Fund, where he specialized in public, PIPE and mezzanine-stage life sciences investing. Previously, he was a
healthcare research analyst and portfolio manager at Franklin Templeton Investments. Mr. Nunn was also an investment banker with
Alex. Brown & Sons. He received an MBA from the Stanford Graduate School of Business and an AB in Economics from Dartmouth
College. Mr. Nunn holds the Chartered Financial Analyst designation, is a member of the CFA Society of San Francisco, and recently
completed the Stanford GSB Directors’ Consortium executive education program.

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Isaac Manke
Member of the Board of Directors
Dr. Manke has more than 15 years of experience in the life science industry as an investor, research analyst, consultant and scientist.
Isaac is currently a General Partner at Acorn Bioventures, where he focuses on investing in small-cap public and private biotechnology
companies. Prior to Acorn, Isaac spent 11 years at New Leaf Venture Partners (NLV). In addition to private venture investments, during
his time at NLV, he also led the firm’s public investment activities initially with the public portfolio within NLV-II, and from 2014 through
2019, had day-to-day management and oversight responsibility for the NLV Biopharma Opportunities Funds. Isaac has been a board
member or observer for several companies, including the boards of True North Therapeutics (acquired by Bioverativ) and Karos
Pharmaceuticals (acquired by an undisclosed company). Previously, Isaac was an Associate in the Global Biotechnology Equity
Research group at Sanford C. Bernstein. Isaac was also an Associate in the Biotechnology Equity Research group at Deutsche Bank
and was a Senior Analyst at Health Advances, a biopharmaceutical and medical device strategy consulting firm. Isaac received a B.A.
in Biology and a B.A. in Chemistry at Minnesota State University (Moorhead), and a Ph.D. in Biophysical Chemistry and Molecular
Structure at the Massachusetts Institute of Technology, or MIT. Isaac’s discoveries led to several publications in top journals, including
Science and Cell, and were selected by Science as one of the “2003: Signaling Breakthroughs of the Year”. These discoveries also
resulted in four issued patents.

3.2. Other activities and vested interests

Apart from the information given above, none of the members of the Board has had other activities or holds any positions:
–

in governing and supervisory bodies of important Swiss and foreign organizations, institutions and foundations under private and
public law;

– of permanent management and consultancy functions for important Swiss and foreign interest groups; or
– of official government functions and political posts.

3.3. Rules in the articles of incorporation regarding the number of permitted mandates outside the Company

Article 31 of the Articles provides certain restrictions to the number of mandates that members of the Board may have in the supreme
governing bodies of legal entities registered in the Swiss commercial register or similar foreign register as follows:
– no member of the Board may hold more than fourteen additional mandates of which no more than four mandates in listed entities;
– mandates in companies controlled by Addex or which control Addex are not subject to restrictions;
– mandates that are held by order and on behalf of Addex or companies under Addex control are restricted to ten; and
– mandates in associations, charitable organizations, family trusts and foundations relating to post-retirement benefits and other

not-for-profit organizations are restricted to twenty-five.

Multiple mandates in different legal entities which are under common control or same beneficial ownership are deemed to be one
mandate.

3.4. Elections and terms of office

In accordance with articles 15, 16 and 17 of the Articles:
– The Board shall consist of between one and eleven members. The Company currently has six Board members.
–

In accordance with the Swiss Federal Code of Obligations, members of the Board including the Chairman are appointed and
removed exclusively by shareholders’ resolution for a term of one year until completion of the next annual general meeting of
shareholders.

– The members of the Board and the Chairman of the Board may be re-elected without limitation.
–

If the office of the Chairman of the Board is vacant, the Board shall appoint a Chairman from among its members for a term of
office extending until completion of the next annual general meeting of shareholders.

– Subject to mandatory law and the provisions of these Articles, the Board determines its own internal organization and the

modalities for the passing of resolutions in its Organizational Rules.

3.5. Internal organization

Except for the election of the Chairman of the Board and the members of the Compensation Committee (which are to be elected by
the general meeting of shareholders), the Board determines the Company’s internal organization. It shall elect the members of the
Audit Committee and of the Nomination Committee and appoint a Secretary who does not need to be a member of the Board. The
committees may designate their own secretaries.

3.5.1. Allocation of tasks within the Board of Directors

The Articles and Organizational Rules define the Company’s internal organization and areas of responsibility of the Board, Chairman,
Chief Executive Officer ("CEO") and the Executive Management. In accordance with article 17 of the Articles, the Board may appoint
from amongst its members standing or ad hoc committees entrusted with the preparation and execution of its decisions or the
supervision of specific parts of business of the Company.

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3.5.2. Committees of the Board of Directors

As of December 31, 2023, the Company had two committees: The Audit Committee and the Compensation Committee. These
Committees are assisting the Board in fulfilling its duties and also have decision authority to the extent described below.

The Board Committees as of December 31, 2023

Members of the
Board of Directors

Vincent Lawton
Raymond Hill
Tim Dyer
Roger Mills
Jake Nunn
Isaac Manke

Audit Committee

Board of
Directors

Chairman
Member
Member
Member
Member
Member

Audit Committee

Compensation
Committee

Chairman
–
–
–
Member
Member

Member
Chairman
–
–
–
–

Members as of December 31, 2023: The Audit Committee consists of Vincent Lawton (Chairman Audit Committee), Jake Nunn and
Isaac Manke.

In accordance with the Organization Rules, the Audit Committee consists of up to three non-executive and independent Directors.
The members have to be financially literate.

Pursuant to the Organizational Rules, a "non-executive" Director is a Director who does not perform any line management function
within the Company; an "independent" Director is a non-executive Director and a Director who never was or was more than three
years ago a member of the Executive Management and who has no or comparatively minor business relations with the Company.
The members shall be appointed, as a rule, for the entire duration of their mandate as Board members and be re-eligible.

The Audit Committee assists the Board in fulfilling its duties of supervision of management. The Audit Committee has following powers
and duties:
–

to review and assess the effectiveness of the statutory auditors and the group auditors, in particular their independence from the
Company. In connection therewith, it reviews in particular additional assignments given by the Company or its subsidiaries. It may
issue binding regulations or directives in connection with such additional assignments;
to review and assess the scope and plan of the audit, the examination process and the results of the audit and to examine whether
the recommendations issued by the auditors have been implemented by management;
to review the auditors' reports, to discuss their contents with the auditors and with the management;
to approve the terms and conditions of the engagement of the auditors;
to assess the risk assessment established by the management and the proposed measures to reduce risks;
to assess the state of compliance with norms within the Company;
to review in cooperation with the auditors, the CEO and Head of Finance whether the accounting principles and the financial
control mechanism of the Company and its subsidiaries are appropriate in view of the size and complexity of the Group;
to review the annual and interim statutory and consolidated financial statements intended for publication. It should discuss these
with the CEO and the Head of Finance and, separately, with the head of external audit; and
to make a proposal to the Board with respect to these annual and interim statutory and consolidated financial statements; the
responsibility for approving the annual financial statements remains with the Board.

–

–
–
–
–
–

–

Should an internal audit function be established, the Audit Committee would have the power and duties:
–

to review the effectiveness of the internal audit function, its professional qualifications, resources and independence and its
cooperation with external audit;
to approve the annual internal audit concept and the annual internal audit report, including the responses of the management
thereto;

–

The Audit Committee regularly reports to the Board on its decisions, assessments, findings and proposes appropriate actions.

Nomination Committee

In accordance with the Organization Rules, should the Board elect to constitute a Nomination Committee then the Nomination
Committee shall consist of up to three Directors, the majority of which shall be non-executive and independent. The Board did not
constitute a Nomination Committee in 2023.

Compensation Committee

Members as of December 31, 2023: Raymond Hill (Chairman Compensation Committee) and Vincent Lawton.

In accordance with the Organization Rules, the Compensation Committee consists of two non-executive and independent Directors.

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Pursuant to the Organizational Rules, a "non-executive" Director is a Director who does not perform any line management function
within the Company; an "independent" Director is a non-executive Director and a Director who never was or was more than three
years ago a member of the Executive Management and who has no or comparatively minor business relations with the Company.
The members shall be appointed by the shareholder's meeting until the next ordinary general meeting of shareholders and be re-
eligible.

The Compensation Committee assists the Board in fulfilling its remuneration related matters. The Compensation Committee has the
following powers and duties:
–

to review and assess on a regular basis the remuneration system of the Company and the Group (including the management
incentive plans) and to make proposals in connection thereto to the Board;
to recommend the terms of employment, in particular the remuneration package, of the CEO and to make proposals in relation to
the remuneration of Directors;
to recommend upon proposal of the CEO the terms of employment, in particular the remuneration package, of employees reporting
directly to the CEO as well as review matters related to the compensation of other top managers, as well as the general employee
compensation, benefit policies and HR practices of the Company; and
to make recommendations on the grant of options or other securities under any management incentive plan of the Company.

–

The Compensation Committee regularly reports to the Board on its decisions, assessments, findings and proposes appropriate
actions.

The Compensation Committee meets as often as business requires. The Compensation Committee held two meetings in 2023 to
review the 2022 achievements versus the planned corporate objectives, determine the performance related bonus pool, review the
annual salary review process and 2023 corporate objectives as well as to review the remuneration of the members of the Board, and
amend the grant conditions relating to the strike price (See Compensation report of the Group).

3.5.3. Working methods of the Board of Directors and its committees

In 2023, the Board held four virtual meetings with average duration of half a day. In addition to formal Board meetings, the Board
holds additional ad hoc meetings or telephone conferences to discuss specific matters. The CEO and Chief Medical Officer (“CMO”)
are entitled to attend every Board meeting and to participate in its debates and deliberations with the exception of non-executive
sessions.

During Board meetings, each member of the Board may request information from the other members of the Board, as well as from
the members of the Executive Management present on all affairs of the Company. The CEO reports at each meeting of the Board on
the course of business of the Company in a manner agreed upon from time to time between the Board and the CEO. The Board also
engages specific advisors to address specific matters when required.

In addition to reporting at Board meetings, the CEO reports immediately any extraordinary event and any significant change within
the Company to the Chairman. Outside of Board meetings, each member of the Board may request from the CEO information
concerning the course of business of the Company.

3.6. Definition of areas of responsibility

The Board is the ultimate corporate body of the Company. It further represents the Company towards third parties and shall manage
all matters which by law, Articles or Organizational Rules have not been delegated to another body of the Company.

In Accordance with article 19 of the Articles, the Board has delegated all areas of management of the Group’s business to the CEO
and the Executive Management, and has granted the CEO the power to appoint the members of the Executive Management. The
Board carries out the responsibilities and duties reserved to it by law, the Articles and the Organizational Rules. The following
responsibilities remain with the Board:
–
–
–
–

the ultimate direction of the Company and the Group and the issuance of the necessary instructions;
the determination of the organization of the Company, including the adoption and revision of the Organizational Rules;
the organization of the accounting system, the financial control and the financial planning;
the appointment, remuneration and dismissal of the CEO of the company and of managers directly reporting to the CEO, as well
as the determination of their signatory power;
the ultimate supervision of the persons entrusted with management of the Company, specifically in view of their compliance with
the law, the Articles, the Organizational Rules and directives given from time to time by the Board;
the preparation of the business report, the preparation for the meetings of shareholders and the implementation of the resolutions
adopted by the meeting of shareholders;
the filing of a request for a debt restructuring moratorium and the notification of the judge if liabilities exceed assets;
the preparation of the compensation report;
the passing of resolutions regarding the supplementary contribution for shares not fully paid-in;
the passing of resolutions concerning an increase in share capital to the extent that such power is vested in the Board, and of
resolutions concerning the confirmation of capital increases and corresponding amendments to the Articles, as well as making
the required report on the capital increase;
the non-delegable and inalienable duties and powers of the Board pursuant to the Swiss Merger Act and any other law;
the examination of the necessary qualifications of the auditors;

–

–
–
–
–

–
–

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Addex Therapeutics Annual Report 2023│Corporate Governance Report

–

the adoption of, and any amendments or modifications (except for immaterial changes) to, any equity incentive plan, stock option
agreement, restricted stock purchase agreement, etc.;
the decisions regarding entering into any financing arrangement in excess of CHF 2,000,000 including loan agreements, credit
lines, letters of credit or capitalized leases;
the issuance of convertible debentures, debentures with option rights or other financial market instruments;
–
–
the approval of the business strategy and the approval and adoption of the budget of the Company;
– decisions or actions in excess of CHF 1,000,000 which are not in accordance with the budget; and
–

the approval of any recommendation made by any of the Committees.

According to the current Organizational Rules enacted by the Board, resolutions of the Board are passed by way of simple majority
vote. To validly pass a resolution, more than half of the members of the Board have to attend the meeting. No quorum is required for
confirmation resolutions and adaptations of the Articles in connection with capital increases pursuant to articles 634a, 651a, 652g
and 653g of the Swiss Federal Code of Obligations.

Except for Vincent Lawton (Chairman) and Tim Dyer, who have single signature authority, the members of the Board have joint
signatory authority.

3.7. Information and control instruments vis-à-vis the Executive Management

The Board ensures that it receives sufficient information from the CEO and Executive Management to perform its supervisory duty
and to make the decisions that are reserved to the Board. At each Board meeting the Board receives reports from the CEO and
selected members of the Executive Management on the status of finance, business, research and development. These reports focus
on the main risks and opportunities related to the Group. In addition, the Board is provided with a status report prior to each board
meeting, a monthly finance report and other ad hoc reports on significant matters related to the Group’s operations.

Furthermore, the Board receives unaudited annual and interim financial statements for all Group companies including consolidated
financial statements for the Company. The Board receives a written report from the auditors on the results of the audit which includes
any findings with respect to internal control risks arising as a result of their audit procedures. The auditors held two meetings with the
Chairman during the 2023 audit process. Addex does not have an independent internal audit function. For further information on the
risk management and the financial risks factors inherent to the Group’s activities, refer to note 3 of the consolidated financial
statements.

4. Executive Management

4.1. Members of the Executive Management

In accordance with the Articles and the Organizational Rules, the Board has delegated the operational management to the CEO. The
CEO together with the Executive Management and under the control of the Board conducts the operational management of the
Company pursuant to the Organizational Rules and reports to the Board on a regular basis.

The following table sets forth the name, year of birth and principal position of those individuals who currently are part of the Executive
Management followed by a short description of each member’s business experience, education and activities:

Name

Year of Birth

Position

Nationality

Member since

Tim Dyer
Roger Mills
Robert Lütjens
Jean-Philippe Rocher
Mikhail Kalinichev

1968
1957
1968
1959
1967

Chief Executive Officer

Chief Medical Officer
Head of Discovery - Biology
Head of Discovery - Chemistry
Head of Translational Science

Swiss / British
USA / British
Swiss
French
French / British

2002
2016
2015
2018
2021

Tim Dyer
Chief Executive Officer – Refer to page 11

Roger Mills
Chief Medical Officer – Refer to page 11

Robert Lütjens
Co-Head of Discovery - Biology
Dr. Lütjens is responsible for all biology activities and has extensive experience in drug discovery. He established the biology
capabilities and built the Company’s small molecule allosteric modulator biology platform. He played a pivotal role in the success of
both internal and partnered programs, including the discovery of dipraglurant and ADX71149, both of which progressed into Phase II
clinical development. Prior to joining Addex at inception in 2002, Dr. Lütjens completed a postdoctoral fellowship in the Department
of Neuropharmacology at the Scripps Research Institute, in La Jolla, CA, where he focused on understanding molecular changes
involved in addiction disorders. Dr. Lütjens obtained his degrees in Biology from the University of Geneva, his master’s at the Swiss

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Institute for Experimental Cancer Research and his Ph.D. thesis at the Glaxo Institute for Molecular Biology in Geneva and the
Institute for Cellular Biology and Morphology in Lausanne. Dr. Lütjens is co-author of over 30 peer-reviewed publications and patents.

Jean-Philippe Rocher
Co-Head of Discovery - Chemistry
Dr. Rocher is responsible for IP and for all chemistry activities including CMC, scale-up and formulation, medicinal chemistry,
computational chemistry, compound library management and activities linked to developability. He has extensive experience in drug
discovery and returns to Addex from Pierre Fabre where he was Director of CNS Programs from March 2014 to May 2018. Joining
Addex at its inception in 2002, Dr. Rocher established the Company’s chemistry capabilities and built its small molecule allosteric
modulator chemistry platform. He played a pivotal role in the success of both internal and partnered programs, including the discovery
of dipraglurant and ADX71149, both of which progressed into Phase 2 clinical development. Prior to joining Addex, Dr. Rocher was
Director of Chemistry at Devgen NV (Gent, Belgium), Senior Research Scientist for GlaxoSmithKline KK (Tsukuba, Japan), Scientific
Project Leader in CNS at Mitsubishi Tanabe (Yokohama, Japan) and Head of Drug Discovery Unit for Battelle (Geneva, Switzerland).
He started his career as a Research Scientist in the Dermatology Research Center of Galderma (Sophia-Antipolis, France) following
a PhD in Medicinal Chemistry and Pharm D at the Faculty of Pharmacy of Lyon (France). He is a co-author of more than 40 research
publications and patents.

Mikhail Kalinichev
Head of translational science
This is the second time Dr. Kalinichev is a part of Addex team, as previously, he spent 4 years in the company in several positions,
including Associate Director and Group Leader, Behavioral Neuroscience. Immediately before his second appointment at Addex,
Dr. Kalinichev spent 6 years as Director of in vivo neurology at Ipsen, France. In this role, he helped define the neuroscience
therapeutic strategy, led operational activities and initiated several industrial and academic collaborations in the area of
neuromuscular disorders and pain. Before Ipsen, he was a section head at Lundbeck, Denmark where he helped drive translational
studies in schizophrenia, cognitive impairment and pain. His first role in pharmaceutical industry was as a principal scientist at
Psychiatry Center of Excellence of GlaxoSmithKline, UK. Dr. Kalinichev’s post-doctoral training was at the Department of
Pharmacology, Emory University School of Medicine (USA). Dr. Kalinichev has been awarded several prestigious awards, including
the Vernalis Prize of the British Association for Psychopharmacology and the GlaxoSmithKline Exceptional Science Award. He is
inventor on several patents and co-authored more than 50 papers. Dr. Kalinichev earned his PhD in behavioral neuroscience at
Rutgers University (USA).

4.2. Other activities and vested interests

Apart from the information given above, none of the members of the Executive Management has had other activities or holds any
positions in:
– governing and supervisory bodies of important Swiss and foreign organizations, institutions and foundations under private and

public law;

– permanent management and consultancy functions for important Swiss and foreign interest groups; or
– official government functions and political posts.

4.3. Rules in the articles of association on the number of permitted mandates outside the Company

Article 31 of the Articles provide certain restrictions to the number of mandates that members of the Executive Management may
have in the supreme governing bodies of legal entities registered in the Swiss commercial register or similar foreign register as follows:
– no member of the Executive Management may hold more than five board of director mandates with no more than two mandates

in listed entities;

– mandates in companies controlled by Addex or which control Addex are not subject to restrictions;
– mandates that are held by order and on behalf of Addex or companies under Addex control are restricted to ten; and
– mandates in associations, charitable organizations, family trusts and foundations relating to post-retirement benefits and other

not-for-profit organizations are restricted to twenty-five.

Multiple mandates in different legal entities which are under common control or same beneficial ownership are deemed to be one
mandate.

4.4. Management contracts

There are no management contracts between Addex and third parties.

5. Compensation, shareholdings and loans

5.1. Content and method of determining the compensation and the shareholding programs

Detailed information about content and method of determining compensation and shareholder programs of the members of the Board
and Executive Management is included in the Compensation Report of the Group. Information about shareholdings of the members
of the Board and Executive Management is included in note 15 of the statutory financial statements of the Company.

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Addex Therapeutics Annual Report 2023│Corporate Governance Report

5.2. Disclosure of rules in the articles of incorporation regarding compensation of the Board of Directors and of the

Executive Management

For rules in the Articles regarding the approval of compensation by the meeting of shareholders, the supplementary amount for
changes in the Executive Management as well as the general compensation principles, please refer to articles 26–28 of the Articles.
For rules in the Articles regarding agreements with members of the Board and of the Executive Management in terms of duration and
termination, please refer to article 29 of the Articles. Article 30 of the Articles indicates the rules regarding credits and loans for the
members of the Board and of the Executive Management.

6. Shareholders’ participation rights

6.1. Voting rights restrictions and representation

Voting rights may be exercised only after a shareholder has been recorded in the Company’s share register as a shareholder or
usufructuary with voting rights, subject further the restrictions on transferability set forth in article 5 of the Articles. No exceptions from
these restrictions were granted in 2023. A shareholder may be represented by his legal representative, the independent proxy or by
a duly authorized person who does not need to be a shareholder. Subject to the registration of shares in the share register within the
deadline set from time to time by the Board before shareholders’ meetings, the Articles do not impose any restrictions on the voting
rights of shareholders. Specifically, there is no limitation on the number of voting rights per shareholder. For further information on
the conditions for registration in the share register (including in relation to Nominees) and for attending and voting at a shareholders’
meeting, please refer to the sections “Limitations on transferability of shares and nominee registration” on page 9 above and “Entries
in the share register” on page 18 below.

Article 13 of the Articles provides the basis for election of the independent proxy. The Articles do not contain any rules on the issue
of instructions to the independent proxy or on the electronic participation in the general meeting of shareholders. The Shareholders’
Meeting of May 31, 2023, re-elected Robert P. Briner as the independent proxy.

Resolutions of shareholders’ meetings generally require the approval of the absolute majority of the votes represented at the
shareholders meeting (more than 50% of the share votes represented at such meeting). Such resolutions include amendments to the
Articles, elections of the members of the Board and statutory and group auditors election of the Chairman of the Board and of the
members of the Compensation Committee, election of the independent proxy, approval of the annual financial statements, setting the
annual dividend, approval of the compensation of the Board and management pursuant to the Articles, decisions to discharge the
members of the Board and management for liability for matters disclosed to the shareholders’ meeting and the ordering of an
independent investigation into specific matters proposed to the shareholders’ meeting.

A resolution passed at a shareholders’ meeting with a qualified majority of at least two-thirds of the votes represented and the absolute
majority of the nominal share capital is required by law for:
– changes to the business purpose;
–
the consolidation of shares;
– an increase in the share capital by way of capitalization of reserves, against contribution in kind, for the acquisition of assets or

involving the grant of special privileges;
the restriction or exclusion of pre-emptive rights of shareholders;
the creation of a conditional capital or of a capital range;
restrictions on the transferability of registered shares;
the creation of shares with privileged voting rights;

–
–
–
–
– a change of the currency in which the share capital is denominated;
–
–
–
– a relocation of the registered office;
–
–

the introduction of an arbitration clause in the Articles; and
the dissolution of the Company.

the introduction of a casting vote for the Chairman at the general meeting;
the introduction of a provision in the Articles allowing general meetings to be held abroad;
the delisting of shares;

Special quorum rules apply by law to a merger, demerger, or conversion of the Company. The introduction or abolition of any provision
in the Articles introducing a majority greater than that required by law must be resolved in accordance with such greater majority.

6.2. Statutory quorums

There is no provision in the Articles requiring a majority for shareholders’ resolutions beyond the majority requirements set out by
applicable legal provisions.

6.3. Convocation of the general meeting of shareholders

The shareholders’ meeting is the supreme body of the Company and under Swiss law, the ordinary shareholders’ meeting takes place
annually within six months after the close of the business year. Shareholders’ meetings may be convened by the Board or, if
necessary, by the auditors. Furthermore, the Board is required to convene an extraordinary shareholders’ meeting if so requested in

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writing by holders of shares representing at least 10% of the share capital and who submit a petition specifying the item for the agenda
and the proposals.

6.4. Inclusion of items on the agenda

Shareholders representing shares with a nominal value of at least CHF 1,000,000 or 10% of the share capital have the right to request
in writing that an item be included on the agenda of the next shareholders’ meeting, setting forth the item and the proposal. A request
to put an item on the agenda has to be made at least 60 days prior to the meeting. Extraordinary shareholders’ meetings may be
called as often as necessary, in particular in all cases required by law.

A shareholders’ meeting is convened by publishing a notice in the Swiss Official Commercial Gazette (Feuille Officielle Suisse du
Commerce/Schweizerisches Handelsamtsblatt) at least 20 days prior to such meeting. In addition, holders of shares may be informed
by a letter sent to the address indicated in the share register.

6.5. Entries in the share register

The Board determines the relevant deadline for registration in the share register giving the right to attend and to vote at the
shareholders’ meeting. Such deadline is published by Addex on the Company’s website, usually in connection with the publication of
the invitation to the shareholders’ meeting in the Swiss Official Commercial Gazette. The registration deadline for the ordinary
shareholders’ meeting will be determined and communicated prior to the end of May 2024. Addex has not enacted any rules on the
granting of exceptions in relation to these deadlines. No exceptions were granted in 2023, and the Board does not anticipate granting
any exceptions related to the shareholders’ meeting to be held in 2024. For further information on registration in the share register,
please refer to section “Limitations on transferability of shares and nominee registration” on page 9.

7. Changes of control and defense measures

7.1. Duty to make an offer

Swiss law provides for the possibility to have the Articles contain a provision which would eliminate the obligation of an acquirer of
shares, exceeding the threshold of 33 1/3% of the voting rights (whether exercisable or not), to proceed with a public tender offer to
acquire 100% of the listed equity securities of the Company (opting-out provision pursuant to article 125 para. 3 FMIA or which would
increase such threshold to 49% of the voting rights (opting-up provision pursuant to article 135 para. 1 FMIA).

Between March 16, 2018 and May 31, 2023, Addex's Articles included an opting-out provision (the “Opting-Out Provision”) exempting
Growth Equity Opportunities Fund IV, LLC, c/o New Enterprise Associates, 1954 Greenspring Drive, Suite 600, Timonium, MD 21093,
and New Leaf Biopharma Opportunities I, L.P., 7 Times Square, Suite 3502, New York, NY 10036, United Stated, in each case
including their direct or indirect partners or shareholders as well as any other entity or person (whether incorporated or not) that alone
or together with others controls or otherwise holds any interest in them, from the duty to make a mandatory tender offer pursuant to
Art. 135 of the FMIA. The Opting-Out Provision was limited in time and became ineffective on March 21, 2023. Therefore, the
shareholders resolved on May 31, 2023 to remove the Opting-Out Provision from Addex's Articles.

7.2. Clauses on changes of control

Addex’ equity sharing certificate incentive plan, share option plan and staff retention deferred strike price payment plan contain a
provision in respect of changes of Addex shareholder base. In the event of a change of control over Addex (defined as a change of
control event triggering a mandatory public tender offer according to applicable stock exchange rules) all outstanding unvested share
options and subscription rights attached to equity sharing certificates, vest, and become exercisable with their remaining term being
reduced proportionally, and deferred strike price payment obligations and sales restrictions associated with the staff retention deferred
strike price payment plan are waived.

8. Auditors

8.1. Duration of the mandate and term of office of the lead auditor

Pursuant to article 23 of the Articles and the Organization Rules, the auditor shall be elected every year and may be re-elected. The
statutory and group auditors of Addex Therapeutics is BDO AG, Switzerland since their election during the Annual General Meeting
held on June 9, 2020. Mr. Christoph Tschumi acts as lead auditor of Addex since 2020.

8.2. Auditing fees

In 2023, BDO AG charged the Group audit fees in the amount of CHF 275,200.

8.3. Additional fees

In 2023, BDO AG charged the Group additional fees of CHF 47,410 for services relating to operations on the capital and filings related
to the Nasdaq Stock Market.

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Addex Therapeutics Annual Report 2023│Corporate Governance Report

8.4. Information instruments pertaining to the external audit

The Audit Committee as a committee of the Board reviews and evaluates the performance and independence of the auditor at least
once a year. Based on its review, the Audit Committee recommends to the Board, which external auditor should be proposed for
election at the general meeting of shareholders. The decision regarding the general meeting agenda is then taken by the Board.
When evaluating the performance and independence of the auditor, the Audit Committee puts special emphasis on criteria such as
global network of the audit firm, professional competence of the lead audit team, understanding of Addex' specific business risks,
personal independence of the lead auditor and independence of the audit firm as a company and coordination of the auditor with the
Audit Committee.

The Audit Committee determines the scope of the external audit and the relevant methodology to be applied to the external audit with
the auditors and discusses the results of the respective audits with the auditor. Representatives of the auditor are regularly invited to
meetings of the Audit Committee, to attend during those agenda points dealing with an accounting, financial reporting or auditing
matters.

The Audit Committee assumes the task of supervising the auditors. The Audit Committee meets with external auditor at least once a
year to discuss the scope and the results of the audit and to assess the quality of their service. The auditor prepares a Board Report
addressed to the Chairman of the Board two times per year, informing them of their audit plan for the year under review followed by
a report detailing the result of their annual audit.

In 2023, the Chairman of the Board or Audit Committee met with the auditors five times to discuss the financial situation of the Group,
the scope and the results of their 2022 year-end audit and their review of the interim reports relating to the published quarterly reports.

In 2024, the Audit Committee of the Board met with the auditors two times to discuss the financial situation of the Group, the scope
and the results of their 2023 year-end audit.

Information policy

Addex is committed to an open and transparent communication with its shareholders, financial analysts, potential investors, the
media, customers, suppliers and other interested parties.

Addex publishes financial results in the form of an Annual Report and quarterly reports (Interim Reports). In addition, Addex informs
shareholders and the public regarding the Group’s business through press releases, conference calls, as well as roadshows. Where
required by law or Addex’ Articles, publications are made in the Swiss Official Commercial Gazette. The Annual Report, usually
published no later than April of the following year and the Interim Reports, usually published no later than two months after the closing
date, are announced by press release. Annual Reports, Interim Reports and press releases are available on request in printed form
to all registered shareholders and are also made available on the Group’s website. The Group’s website, which is the Group’s
permanent source of information, also provides other information useful to investors and the public, including information on the
Group’s research and development programs as well as contact information. It is the Group’s policy not to release explicit earnings
projections, but it will provide general guidance to enable the investment community and the public to better evaluate the Group and
its prospective business and financial performance. The Board has issued a disclosure policy to ensure that investors will be informed
in compliance with the requirements of the SIX.

The following table summarizes the scheduled financial calendar for the financial year 2024:

Expected Dates:
April 18, 2024
April 18, 2024
Week of May 27, 2024
Week of June 10, 2024
Week of August 12, 2024
Week of November 11, 2024

Event:
Publication of the annual 2023 report
Media conference annual 2023 report
Publication of the Q1 2024 report
Annual General Meeting
Publication of the half-year 2024 report
Publication of the Q3 2024 report

Our 2024 calendar is as well available on our website:

https://www.addextherapeutics.com/en/investors/events/

Details and information on the business activities, Company structure, financial reports, media releases and investor relations are
available on the Company's website:

https://www.addextherapeutics.com

The official means of publication of the Company is the Swiss Official Gazette of Commerce:

https://www.shab.ch

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Addex Therapeutics Annual Report 2023│Corporate Governance Report

Web-links regarding the SIX push-/pull-regulations concerning ad hoc publicity issues are:

https://www.addextherapeutics.com/en/investors/ad-hoc-announcements-art-53-lr/

https://www.addextherapeutics.com/en/investors/register-email-news

The financial reports as well as shareholders meeting invitations and results are available under:

https://www.addextherapeutics.com/en/investors/financial-reports/

The Group’s investor relations department is available to respond to shareholders’ or potential investors’ queries under
IR@addextherapeutics.com or via post at Addex Therapeutics Ltd., Investor Relations, C/O Addex Pharma SA, Chemin des Mines
9, CH-1202 Geneva, Switzerland. Additional inquiries may also be made by phone at +41 22 884 1555.

10. Quiet periods

For members of the Board, members of the Executive Management and employees directly reporting to them, including their
respective staff, trading in securities of Addex, including, but not limited to, shares of Addex, options or convertible bonds, or any
other financial instruments whose price is dependent to a degree of more than 25% on such securities of Addex (collectively the
Relevant Securities), is prohibited from trading in any Relevant Securities during the following regular restricted periods, regardless
of whether such member is in possession of insider information or not:

the period starting two (2) weeks prior to the end of any half yearly reporting period of Addex and ending one (1) full trading
day following the respective public release of semi-annual results;

the period starting two (2) weeks prior to the end of any yearly reporting period of Addex and ending one (1) full trading day
following the respective public release of annual results;

the period starting two (2) weeks before any public earnings release of Addex and ending one (1) full trading day following
such public release; and

the period starting four (4) weeks prior to the first public release of an offering memorandum for the issuance of Relevant
Securities and ending one (1) full trading day following such public release.

Members of the Board and the Executive Management and employees directly reporting to them may only deal in Relevant Securities
if they obtained clearance in advance from the Chief Financial Officer.

11. Ethical business conduct

The Group is committed to the highest standards of ethical conduct. As a pharmaceutical business, the Group is operating in a highly
regulated business environment. Strict compliance with all legal and health authority requirements, as well as requirements of other
regulators, is mandatory. The Group expects its employees, contractors and agents to observe the highest standards of integrity in
the conduct of the Group’s business. The Code of Conduct sets forth the Group’s policy embodying the highest standards of business
ethics and integrity required of all Board Members, Executive Managers, employees and agents when conducting business affairs on
behalf of the Group. The Group is committed to complying with the spirit and letter of all applicable laws and regulations where the
Group engages in business.

12. Important changes after the balance sheet date (December 31, 2023)

On April 2, 2024, the Group divested its allosteric modulator discovery platform and a portfolio of preclinical programs to a new Swiss
company, Neurosterix Pharma Sàrl (equivalent to an LLC). Neurosterix is focused on the discovery and development of novel orally
available allosteric modulator drug candidates, including M4 PAM for schizophrenia, mGlu7NAM for stress related disorders and
mGlu2NAM for mild neurocognitive disorders. In connection with the transaction, we received CHF 5.0 million and a 20% equity
interest in Neurosterix US Holdings LLC, the sole shareholder of Neurosterix. Neurosterix received USD 63 million in initial funding
from a syndicate of investors led by Perceptive Advisors
Subsequent to the transaction, Tim Dyer and Dr Mikhail Kalinichev are continuing in their executive role at Addex, as CEO and as
Head of Translational Science respectively, and are performing the same functions with Neurosterix. Dr Roger Mills is continuing in
his executive role at Addex as Chief Medical Officer. Dr Robert Lutjens, Co-Head of Discovery in Biology and Dr Jean-Philippe Rocher
Co-Head of Discovery in Chemistry stepped down from the Executive Management to focus on their new roles at Neurosterix. Lénaïc
Teyssédou, Head of Finance since 2017, joined the Executive Management.

Additional information about the Transaction is disclosed in note 25 of the consolidated financial statements of Addex.

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Addex Therapeutics Annual Report 2023 │Compensation Report

Compensation Report

Overview

This Compensation Report provides the information required by the Swiss Federal Code of Obligations. It also includes information
required by section 5 of the Annex to the Directive on Information relating to Corporate Governance of the SIX Swiss Exchange
(Amendment effective on June 29, 2022) and the Swiss Code of Best Practice for Corporate Governance (status February 6, 2023).

Addex' Articles, Organization Rules and policies provided the basis for the principles of compensation.

Review and approval process

Subject to the powers of the general meeting of shareholders, the Board of Directors determines the compensation of its members
and of the Executive Management in accordance with the Company’s Compensation Policy, on the recommendation of the
Compensation Committee. The Compensation Committee is composed of two members of the Board of Directors who have been
individually elected by the general meeting of shareholders, for a term of one year, until the end of the next annual general meeting.
The Board of Directors elects the chairman of the Compensation Committee from the members of the Compensation Committee.
Members of the compensation Committee are eligible for re-election indefinitely.

The Compensation Committee supports the Board of Directors in establishing and reviewing the Company’s compensation strategy,
guidelines and the performance targets. The Compensation Committee may also submit proposals to the Board of Directors in other
compensation-related issues. For a more detailed description of the Compensation Committee, please refer to section 3.5.2 of the
Corporate Governance Report on page 13.

The Compensation Committee meets as often as necessary to fulfil its role, and generally at least once a year. The Board of Directors
generally resolves on the recommendations of the Compensation Committee during the meeting of the Board of Directors which
immediately follows the meeting of the Compensation Committee during which a recommendation was made.

As a principle, the Chief Executive Officer (“CEO”) attends the meetings of the Compensation Committee and, provided he is also a
Board Member, attends and votes during the meetings of the Board of Directors where the compensation of the Board Members and
the compensation of the Executive Managers are discussed. However, discussions and decisions of the Board of Directors and of
the Compensation Committee regarding the compensation of the CEO are resolved in his absence. The other members of the
Executive Management do not attend the meetings of the Compensation Committee nor the parts of the meetings of the Board of
Directors, where the compensation of the Board Members or the compensation of the Executive Managers are discussed. Board
Members, who are not members of the Compensation Committee, do not attend the meetings of the Compensation Committee, but
take part in the meetings of the Board of Directors during which the compensation of the Board Members is discussed and the
compensation of the Executive Managers as well as the vote relating thereto.

In its review process the Compensation Committee considers compensation packages of other companies in the biotech and
pharmaceutical industry in Switzerland and Europe that are comparable to Addex with respect to size and business model, considering
the professional experience and areas of responsibility of the respective members of the Board of Directors and Executive Managers.
In 2020, a compensation benchmarking study has been conducted by a reputable, independent expert firm which has not been
awarded additional mandates by the Company. This benchmarking study has contributed to the Compensation Committee’s
assessment of the appropriateness of the Company’s compensation level and structure for the 2022 and 2023 business years. In this
benchmarking study, compensation data of Swiss and European listed companies from the biotech sector with a similar size and
stage of development to Addex were collected and used to establish compensation levels and structure. The Compensation
Committee also consults relevant compensation surveys and benchmarking reports. Based on the detailed review process of the
Compensation Committee, the Board of Directors submits two proposals for approval at the shareholders meeting: (i) the maximum
aggregate amount of fixed and variable compensation for the Board of Directors for the prospective period from one ordinary general
meeting of shareholders to the following ordinary general meeting of shareholders; and (ii) the maximum aggregate amount of fixed
and variable compensation for the Executive Management for the period from January 1 to December 31 of the next financial year.
Approval of these proposals requires an absolute majority (more than 50% of the share votes represented at the shareholders
meeting).

Compensation elements for the Board of Directors and Executive Management

Board of Directors

The compensation of the non-executive board members mostly includes variable elements whilst executive board members are not
remunerated as board member. The fixed element comprises a fixed annual monetary compensation per Board term from one general
meeting of shareholders to the next. The variable element comprises a monetary compensation based on Board meeting attendance
and the fair value of equity incentive units (share options and equity sharing certificates) and represents from 50% to 350% of fixed
annual compensation. Nevertheless, in 2022, the variable compensation of the chairman of the Board of Directors and of the chairman
of the Compensation Committee represented fourteen and thirteen time their fixed annual compensation respectively, primarily due
to the increased fair value of their options granted as the exercise prices have been reduced (See note 14). In 2023, the variable

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Addex Therapeutics Annual Report 2023 │Compensation Report

compensation of the chairman of the Board of Directors and of the chairman of the compensation committee came back to the range
from 50% to 350% of fixed annual compensation. Social security contributions of the Company are accrued on the fixed and variable
elements. Board member social security contributions are accrued on the fair value of equity incentive units. Equity incentive units
are granted based on the discretion of the Board of Directors. Equity incentive units are granted to compensate for the dilutive effects
of capital raising to ensure Board Members have sufficient unvested equity incentive units in accordance with external benchmarks.
The most recent review of compensation for members of the Board took place in November 2023. For further information on the
compensation for members of the Board, please refer to the section “Compensation of the Board in 2023" on page 23.

Executive Management

The compensation of members of the Executive Management consists of fixed and variable elements. The fixed element may include
a base salary or a cash retainer paid under a consulting contract. The variable element may include performance-related cash or
share based bonuses, consulting fees based on chargeable hours and equity incentive units (equity sharing certificates and share
options). Company contributions to pension plans, death and invalidity insurances and social security contributions are accrued on
all fixed and variable element compensation that relates to an employment relationship. Company social security contributions are
accrued for all shares or equity incentive unit compensation. The amount of the fixed element depends on the position, responsibilities,
experience and skills, and takes into account individual performance. The fixed element is reviewed at the end of each year by the
Board. Any changes in the fixed elements are made effective in January of the following year. The variable elements are based on
individual and company goals. The potential variable cash bonus is determined in the employment contract and in general is a
percentage of the base salary. Where the Executive Manager has been engaged under a consulting contract, the variable element is
based on the time spent at the contractually defined rate of remuneration. Every year, the Board decides on the total amount of
variable elements including the amount of cash and equity incentive units to be granted for the previous year based on the
achievement of Company and Individual goals. Equity incentive units are granted based on the discretion of the Board of Directors.
Variable cash compensation paid to Executive Managers includes bonus and equity incentive units. The variable compensation of
CEO is determined 100% based on company goals and includes a cash bonus representing from 0% to 50% of base salary and
equity incentive units representing from 0% to 200% of base salary, exceptionally increased to seven times of base salary in 2022
primarily due to the higher fair value of his equity incentive units following the reduction of the exercise prices. In 2023, the value of
the equity incentive units granted to our CEO came back to the range from 0% to 200% of the base salary. Our Chief Medical Officer
(“CMO”) is engaged through a consultancy agreement and invoices the company for hours worked on a monthly basis which are
settled in cash. In addition, equity incentive units are granted from time to time at the discretion of the Board of Directors. The variable
compensation of the other Executive Managers includes a cash bonus representing from 0% to 25% of base salary and is determined
based on 20% individual goals and 80% company goals, and equity incentive units representing 0% to 100% of base salary,
exceptionally increased up to 185% of base salary in 2022 primarily due to the increased fair value of their equity incentive units
granted following the reduction of the exercise prices. In 2023, the equity incentive units granted to the other Executive Managers
came back to the range from 0% to 100% of base salary. In addition, the Board of Directors grants equity incentive units to Executive
Managers to compensate for the dilutive effects of capital raising to ensure Executive Managers have sufficient unvested equity
incentive units in accordance with external benchmarks.

The company goals for 2023 were established at the beginning of the year as follows:

Advancing pre-clinical R&D programs
Securing the Group’s financial situation
Maintain effective governance, regulation and administration

60%
35%
5%

The individual goals of the Executive Managers for 2023 were as follows: 1) Deliver novel drug candidates weighted at 50%; 2)
Develop collaborative arrangements to efficiently advance preclinical portfolio weighted at 25%; and 3) Develop novel tools to identify
and characterize allosteric modulators weighted at 25%.

Equity incentive plans

The purpose of the Group’s share purchase, share option and equity sharing certificate programs (refer to note 14 of the consolidated
financial statements) is to provide members of the Board of Directors, Executive Management, employees and certain consultants
(together “Staff”) with an opportunity to benefit from the potential appreciation in the value of the Company’s shares, thus providing
an increased incentive for participants to contribute to the future success and prosperity of the Group, enhancing the value of the
shares for the benefit of the shareholders of the Group and increasing the ability of the Group to attract and retain individuals of
exceptional skills. In addition, these plans provide the Group with a mechanism to engage services for non-cash consideration by
settling them through a transfer of treasury shares under the share purchase plan based on predefined terms of the consulting
contract. The grant of any share option or equity sharing certificate is at the discretion of the Board of Directors. Key factors considered
by the Board of Directors in making grants of share options or equity sharing certificates are the amount of shareholder approved
conditional capital, the benchmarking with other companies as well as individual performance (for further information on the detail
and composition of the benchmark please refer to the paragraph review and approval process above). The strike price is determined
by the Board of Directors and is primarily based on the closing price of the Company’s shares on the SIX Swiss Exchange on the
grant date. In addition, the Group has implemented a staff retention plan which includes a deferred strike price payment plan
(“DSPPP”) encouraging Board Members, Executive Managers and employees to exercise their share options or equity sharing
certificates and become shareholders of the Company by allowing deferral of the obligation to pay the strike price on exercise
("Deferred Strike Price Payment Obligations").

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Addex Therapeutics Annual Report 2023 │Compensation Report

Indirect benefits

The Company may contribute to the pension plan and maintains certain insurance for death and invalidity for the members of the
Executive Management. New entrants may be eligible for reimbursement of relocation costs, compensation for lost benefits or stock
granted by a previous employer, international school for children or language courses for a limited time period. No Indirect benefits
have been paid to Executive Management in 2023.

Special conditions in case of change of control

In the event of a change of control of the company, three Executive Managers are entitled to receive an amount equivalent to one
time the annual gross salary and 1.5 times the targeted annual bonus 12 months after the change of control, unless they have given
notice of termination or have received notice of termination for cause.

Compensation for the financial year under review (audited)

Measurement basis for compensation

Fixed cash compensation, variable cash compensation and shares acquired under the share purchase plan: accrual basis;

The measurement basis for each component of compensation is described below:

 Equity incentive units: fair value at the grant date in accordance with IFRS 2 valuation methodology; and
 Employers’ social security: accrual basis except for equity incentive units where the notional amount is calculated based on the

fair value at grant date.

Compensation of the Board of Directors in 2023 and 2022

2023

Fixed

Variable compensation

value of
equity
incentive
units(2)
97,681
53,185
-
-
8,551
8,551
167,968
(1) Equity incentive units include share options granted during the year under the Company’s share option plan (refer to note 14 of the consolidated financial statements).
(2) Value of equity incentive units include the fair value of share options granted during the year under the Company’s share option plan amounting to CHF 149,010 and the increase of CHF 18,958

CHF
Vincent Lawton, chairman..……………...
Raymond Hill, member…………………..
Tim Dyer, member………...……………..
Roger Mills, member……….…………….
Jake Nunn, member………………...…...
Isaac Manke, member…………...………
Total……………………………………….

cash
compensation
29,034
18,231
-
-
16,370
16,370
80,005

number of
equity
incentive
units(1)
1,043,153
567,969
-
-
91,323
91,323
1,793,768

cash
attendance
29,034
18,231
-
-
16,370
16,370
80,005

Total
2023
155,750
89,646
-
-
41,291
41,291
327,978

in fair value of the equity incentive units whose grant conditions have been changed during the year (Refer to note 14 of the consolidated financial statements).

2022

Fixed

Variable compensation

value of
equity
incentive
units(2)
384,587
209,113
-
-
25,616
25,616
644,932
(1) Equity incentive units include share options granted during the year under the Company’s share option plan (refer to note 14 of the consolidated financial statements).
(2) The value of the equity incentive units include the fair value of the share options granted during the year under the Company’s share option plan amounting to CHF 246,502 and the increase of

cash
compensation
26,330
15,529
-
-
13,639
13,639
69,137

number of
equity
incentive
units(1)
758,317
411,869
-
-
68,238
68,238
1,306,662

cash
attendance
26,330
15,529
-
-
13,639
13,639
69,137

Total
2022
437,247
240,171
-
-
52,894
52,894
783,206

CHF 398,430 in fair value of the equity incentive units whose grant conditions have been changed during the year (Refer to note 14 of the consolidated financial statements).

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Addex Therapeutics Annual Report 2023 │Compensation Report

Deferred Strike Price Payment Obligations of the Board of Directors

December 31,
2023

December 31,
2022

235,219
128,106
-
-
20,598
20,598
404,521

190,364
103,683
-
-
16,671
16,671
327,389

(1) The amounts reported in this table correspond to the amounts owed by members of the Board of Directors in relation to Deferred Strike Price Payment Obligations (see note 14), which may be
assimilated to loans to be disclosed in this Compensation report within the meaning of the Swiss Federal Code of Obligations.

Compensation to the Executive Management in 2023 and 2022

2023

Fixed

Variable compensation

CHF
Total Executive Management (1)….…...

cash
compensation
1,275,109

Cash(4)
226,288

number of
equity
incentive
units (2)
9,492,817

value of
equity
incentive
units(3)
935,516

Total
2023
2,436,913

(1) The highest paid member of Executive Management in 2023 was the CEO, Tim Dyer, who received CHF 471,969 of fixed cash compensation, CHF 109,151 of variable cash compensation and
7,008,033 equity incentive units. The fair value of equity incentive units including accrued social charges amounted to CHF 691,031 including CHF 613,036 for equity incentive units granted during the
year and CHF 77,995 relating to the change in grant conditions made during the year (see note 14).
(2) Equity incentive units include share options granted during the year under the Company’s share option plan.
(3) The value of equity incentive units include the fair value of share options granted during the year under the Company’s share option plan amounting to CHF 829,927 and the increase of
CHF 105,589 in fair value of the equity incentive units whose grant conditions have been changed during the year (Refer to note 14 of the consolidated financial statements).
(4) Variable compensation in cash relates to bonuses and compensation paid to Executive Managers engaged under consulting contracts which provide for hourly and daily rates with a monthly cap.

2022

Fixed

Variable compensation

CHF
Total Executive Management (1)….…...

cash
compensation
1,249,366

Cash(4)
375,685

number of
equity
incentive
units (2)
6,846,206

value of
equity
incentive
units(3)
3,455,027

Total
2022
5,080,077

(1) The highest paid member of Executive Management in 2022 was the CEO, Tim Dyer, who received CHF 472,724 of fixed cash compensation, CHF 133,881 of variable cash compensation and
4,882,845 equity incentive units. The fair value of equity incentive units including accrued social charges amounted to CHF 2,498,459 including CHF 970,001 for equity incentive units granted during
the year and CHF1,528,458 relating to the change in grant conditions made during the year (see note 14).
(2) Equity incentive units include share options granted during the year under the Company’s share option plan.
(3) The value of equity incentive units include the fair value of the share options granted during the year under the Company’s share option plan amounting to CHF 1,343,025 and the increase of
CHF 2,112,002 in fair value of the equity incentive units whose grant conditions have been changed during the year (Refer to note 14 of the consolidated financial statements).
(4) Variable compensation in cash relates to bonuses and compensation paid to Executive Managers under consulting contracts, which provide for hourly and daily rates with a monthly cap.

Deferred Strike Price Payment Obligations of the Executive Management

CHF
Total Executive Management (1)………….

December 31,
2023

December 31,
2022

2,119,980

1,711,789

(1) The amounts reported in this table correspond to the amounts owed by Executive Managers in relation to Deferred Strike Price Payment Obligations (see note 14), which may be assimilated to
loans to be disclosed in this Compensation Report report within the meaning of the Swiss Federal Code of Obligations. The highest Deferred Strike Price Payment Obligation amounted to CHF
1,524,093 as of December 31, 2023 (CHF 1,222,748 as of December 31, 2022) and was attributable to the CEO Tim Dyer.

Addex’s shares held by members of the Board of Directors and Executive Management

2023
Number of Addex’s
Shares

2022
Number of Addex’s
Shares

Tim Dyer…………………………..……………………………
Robert Lütjens………………………...……………...............
Jean-Philippe Rocher…………………………………………
Vincent Lawton……………………………............................
Raymond Hill……..………………………….........................
Roger Mills…………………………………...........................
Mikhail Kalinichev…………………………………..…………
Jake Nunn……………………………………………………...
Isaac Manke…………………………………………………...
Total……………………………………………………………

16,848,979
3,005,836
2,541,197
2,507,987
1,365,532
785,976
306,765
219,561
219,561
27,801,394

9,840,946
1,755,612
1,484,231
1,464,834
797,563
735,976
179,171
128,238
128,238
16,514,809

Members of the Board and Executive Management do not hold equity incentive units as of December 31, 2023 and December
31, 2022.

Page 24 of 71

Addex Therapeutics Annual Report 2023 │Compensation Report

Phone +41 22 322 24 24
www.bdo.ch
geneve@bdo.ch

BDO Ltd
Rte de Meyrin 123
P.O. Box 150
1215 Geneva 15

STATUTORY AUDITOR'S REPORT

To the general meeting of Addex Therapeutics Ltd, Plan-les-Ouates

Report on the Audit of the Compensation Report according to Art. 734a-734f CO

Opinion

We have audited the compensation r eport of Addex Therapeutics Ltd (the C ompany) for the year
ended 31 December 2023. The audit was limited to the information pursuant to Art. 734a–734f of the
Swiss Code of Obligations (CO) in the tables marked “audited” on pages 23 to 24 of the compensation
report.

In our opinion, the information pursuant to Art. 734a–734f CO in the accompanying compensation
report complies with Swiss law and the Company’s articles of incorporation.

Basis for Opinion

We conducted our audit in accordance with Swiss law and Swiss Standards on Auditing (SA-CH). Our
responsibilities under those provisions and standards are further described in the “Auditor’s
Responsibility for the Audit of the Compensation Report” section of our report. We are independent
of the Company in accordance with the provisions of Swiss law and the requirements of the Swiss
audit profession, and we have fulfilled our other ethical responsibilities in accordance with these
requirements.

We believe that the audit evidence we have obtained is sufficient and appropriate to provide a basis
for our opinion.

Other Information

The Board of Directors is responsible for the other information. The other information comprises the
information included in the annual report, but does not include the tables marked “audited” in the
compensation report, the consolidated financial statements, the stand-alone financial statements and
our auditor's reports theron.

Our opinion on the compensation report does not cover the other information and we do not express
any form of assurance conclusion thereon.

In connection with our audit of the compensation report, our responsibility is to read the other
information and, in doing so, consider whether the other information is materially inconsistent with
the audited financial information in the compensation report or our knowledge obtained in the audit
or otherwise appears to be materially misstated. If, based on the work we have performed, we
conclude that there is a material misstatement of this other information, we are required to report
that fact.we are required to report that fact. We have nothing to report in this regard.

Responsibilities of the Board of Directors for the Compensation Report

The Board of Directors is responsible for the preparation of a compensation report in accordance with
the provisions of Swiss law and the Company’s articles of incorporation, and for such internal control
as the Board of Directors determines is necessary to enable the preparation of a compensation report
that is free from material misstatement, whether due to fraud or error. It is also responsible for
designing the compensation system and defining individual compensation packages.

Page 25 of 71

Addex Therapeutics Annual Report 2023 │Compensation Report

Auditor’s Responsibilities for the Audit of the Compensation Report

Our objectives are to obtain reasonable assurance about whether the information pursuant to
Art. 734a–734f CO is free from material misstatement, whether due to fraud or error, and to issue an
auditor’s report that includes our opinion. Reasonable assurance is a high level of assurance, but is
not a guarantee that an audit conducted in accordance with Swiss law and SA-CH will always detect
a material misstatement when it exists. Misstatements can arise from fraud or error and are
considered material if, individually or in the aggregate, they could reasonably be expected to
influence the economic decisions of users taken on the basis of this compensation report.

As part of an audit in accordance with Swiss law and SA-CH, we exercise professional judgement and
maintain professional skepticism throughout the audit. We also:

•

Identify and assess the risks of material misstatement in the compensation report, whether due
to fraud or error, design and perform audit procedures responsive to those risks, and obtain audit
evidence that is sufficient and appropriate to provide a basis for our opinion. The risk of not
detecting a material misstatement resulting from fraud is higher than for one resulting from
error, as fraud may involve collusion, forgery, intentional omissions, misrepresentations, or the
override of internal control.

Obtain an understanding of internal control relevant to the audit in order to design audit
procedures that are appropriate in the circumstances, but not for the purpose of expressing an
opinion on the effectiveness of the Company’s internal control.

Evaluate the appropriateness of accounting policies used and the reasonableness of accounting
estimates and related disclosures made.

We communicate with the Board of Directors regarding, among other matters, the planned scope and
timing of the audit and significant audit findings, including any significant deficiencies in internal
control that we identify during our audit.

We also provide the Board of Directors with a statement that we have complied with relevant ethical
requirements regarding independence, and to communicate with them all relationships and other
matters that may reasonably be thought to bear on our independence, and where applicable, actions
taken to eliminate threats or safeguards applied.

Geneva, 18 April 2024

BDO Ltd

Christoph Tschumi

Licensed Audit Expert
Auditor in Charge

Nigel Le Masurier

Licensed Audit Expert

Page 26 of 71

Addex Therapeutics Annual Report 2023 │Consolidated Financial Statements

Consolidated Financial Statements of Addex
Therapeutics Ltd as at December 31, 2023

Page 27 of 71

Addex Therapeutics Annual Report 2023 │Consolidated Financial Statements

Consolidated Balance Sheets
as at December 31, 2023 and December 31, 2022

ASSETS

Notes

December 31,
2023

December 31,
2022

Amounts in Swiss francs

Current assets
Cash and cash equivalents………………………………..……………........
Other financial assets………………………………………………………....
Trade and other receivables…………………………….……………………
Contract asset…………………………...…………………….………………
Prepayments …………………….……...…………………….………………
Total current assets…………………………………………………………

Non-current assets
Right-of-use assets…………..……………………………………………….
Property, plant and equipment……………………………………………….
Non-current financial assets………………………………………………….
Total non-current assets…………………………………………………...

6
7
7
7
7

8
9
10

3,865,481
848
110,361
40,907
217,008
4,234,605

330,332
22,604
54,344
407,280

6,957,086
3,165
416,875
181,441
270,394
7,828,961

357,613
41,121
54,355
453,089

Total assets…………………………………………...................................

4,641,885

8,282,050

LIABILITIES AND EQUITY

Current liabilities
Current lease liabilities………………………………………………………..
Payables and accruals………………………………………………………..
Deferred income……………………………………………………………..
Total current liabilities……………………………………………………...

Non-current liabilities
Non-current lease liabilities…………………………………………………..
Retirement benefits obligations……………………………………………...
Deferred income……………………………………………………………..
Total non-current liabilities………………………...................................

Equity
Share capital……………………………………………………………..........
Share premium……………………………………………………………......
Other equity……………………………………………………………………
Treasury shares reserve……………………………………………………...
Other reserves……..………………………………………………………….
Accumulated deficit…………………………………………………………...
Total equity……………………………………………….............................

3.2
11
12

3.2
20
12

13
13
13
13

273,956
2,384,350
234,978
2,893,284

70,380
443,524
89,232
603,136

1,843,545
266,194,689
64,620,223
(909,566)
29,814,816
(360,418,242)
1,145,465

286,107
2,996,004
-
3,282,111

87,028
-
-
87,028

1,153,483
269,511,610
64,620,223
(6,278,763)
25,768,373
(349,862,015)
4,912,911

Total liabilities and equity………………………..……….........................

4,641,885

8,282,050

The accompanying notes form an integral part of these consolidated financial statements.

Page 28 of 71

Addex Therapeutics Annual Report 2023 │Consolidated Financial Statements

Consolidated Statements of Comprehensive Loss
for the years ended December 31, 2023 and 2022

Notes

December 31,
December 31,
2023
2022
Amounts in Swiss francs

Revenue from contract with customer………………………………….
Other income………………………………………………………………..

15
16

1,612,953
34,116

1,422,438
22,521

Operating costs
Research and development...……………………………………..............
General and administration….……………………………………………...
Total operating costs…………………………………….........................

Operating loss……………………………………………………..............

Finance income………………………………………………………………
Finance expense…………………………………………………………….
Finance result…………………………………….....................................

Net loss before tax……………………………………..............................
Income tax expense…………………..……...……………………………...
Net loss for the year...………………………………………….................

Basic and diluted loss per share for loss attributable to the
ordinary equity holders of the Company……………………………….

Other comprehensive (loss)/ income
Items that will never be reclassified to profit and loss:
Remeasurements of retirement benefits obligation.………………...…....
Items that may be classified subsequently to profit and loss:
Exchange difference on translation of foreign operations………………..
Other comprehensive (loss)/ income for the year, net of tax………

(6,962,486)
(4,965,882)
(11,928,368)

(14,665,462)
(7,299,704)
(21,965,166)

(10,281,299)

(20,520,207)

63,964
(338,892)
(274,928)

(10,556,227)
-
(10,556,227)

29,251
(313,257)
(284,006)

(20,804,213)
-
(20,804,213)

(0.14)

(0.46)

(506,167)

1,270,132

(2,000)
(508,167)

(345)
1,269,787

Total comprehensive loss for the year………………………………….

(11,064,394)

(19,534,426)

The accompanying notes form an integral part of these consolidated financial statements.

Page 29 of 71

Addex Therapeutics Annual Report 2023 │Consolidated Financial Statements

Consolidated Statements of Changes in Equity
for the years ended December 31, 2023 and 2022 (1/2)

Notes

Share Capital

Share
Premium

Other equity

49,272,952

283,981,361

(64,620,223)

16,326,365

13/14

174,389

(288,131)

(3,275,107)

(114,754)

(8,792,756)

(999,789)

(105,433)

(890,294)

(3,487)

64,620,223

Treasury
Shares
Reserve

Foreign
Currency
Translation
Reserve

Other
Reserves

Accumulated
Deficit

Total

(11,703,279)

(657,525)

25,095,393

(329,057,802)

16,931,100

(16,326,365)

(174,389)

4,500,000

15,978,570

91,452

1,355,248

(20,804,213)

(345)

1,270,132

1,269,787

(345)

1,270,132

(20,804,213)

(19,534,426)

2,841,270

(301,841)

(7,160,573)

999,789

3,682,073

(288,131)

1,224,893

(114,754)

2,841,270

(301,841)

25,241

3,682,073

(13,981)

464,954

(3,487)

1,153,483

269,511,610

64,620,223

(6,278,763)

(657,870)

26,426,243

(349,862,015)

4,912,911

Balance as of January
1, 2022….………………

Net loss for the year…...

Other comprehensive
income for the year….…

Total comprehensive
loss for the year...........

Reduction of the
nominal value…………..

Issue of treasury
shares………………….

Exercise ESOP & ESC
(treasury shares IFRS 2)

Cost of shares
issuance………………...

Sales under shelf
registration……………...

Related costs of sales
shelf registration………

Sale of pre-funded
warrants…………….…..

Cost of pre-funded
warrants sold…………..

Exercise of pre-funded
warrants…………….…..

Value of warrants and
pre-funded warrants…...

Value of share-based
services.............………..

Movement in treasury
shares:

Net purchases under
liquidity agreement…….

Sales agency
agreement………………

Costs under sale
agency agreement……..

Balance as of
December 31, 2022…...

The accompanying notes form an integral part of these consolidated financial statements.

Page 30 of 71

Addex Therapeutics Annual Report 2023 │Consolidated Financial Statements

Consolidated Statements of Changes in Equity
for the years ended December 31, 2023 and 2022 (2/2)

Notes

Share Capital

Share
Premium

Other equity

Treasury
Shares
Reserve

Foreign
Currency
Translation
Reserve

Other
Reserves

Accumulated
Deficit

Total

1,153,483

269,511,610

64,620,223

(6,278,763)

(657,870)

26,426,243

(349,862,015)

4,912,911

Balance as of January
1, 2023….....................

Net loss for the year…...

Other comprehensive
loss for the year….…

Total comprehensive
loss for the year...........

Issue of treasury
shares………………….

Exercise ESOP
(treasury shares IFRS 2)

Cost of treasury shares
issuance………………...

Sales under shelf
registration……………...

Related costs of sales
shelf registration………

Sale of pre-funded
warrants…………….…..

Cost of pre-funded
warrants sold…………..

Exercise of pre-funded
warrants ………………

Costs of pre-funded
warrants exercised...…..

Value of warrants and
pre-funded warrants…...

Value of share-based
services.............………..

Movement in treasury
shares:

Net purchases under
liquidity agreement…….

Sales agency
agreement………………

Costs under sale
agency agreement……..

Balance as of
December 31, 2023…...

329,000

13/14

125,272

(30,804)

(920,069)

(36,747)

235,790

3,046,123

(53,445)

(2,760,143)

(817)

(2,552,071)

(8,948)

(329,000)

(125,272)

2,079,828

(1,504)

3,745,145

(10,556,227)

(2,000)

(506,167)

(508,167)

(2,000)

(506,167)

(10,556,227)

(11,064,394)

3,382,259

(136,327)

(3,245,932)

2,760,143

1,794,467

(30,804)

1,159,759

(36,747)

3,382,259

(136,327)

35,981

(53,445)

1,794,467

(2,321)

1,193,074

(8,948)

1,843,545

266,194,689

64,620,223

(909,566)

(659,870)

30,474,686

(360,418,242)

1,145,465

The accompanying notes form an integral part of these consolidated financial statements.

Page 31 of 71

Addex Therapeutics Annual Report 2023 │Consolidated Financial Statements

Consolidated Statements of Cash Flows
for the years ended December 31, 2023 and 2022

Notes

December 31,
December 31,
2023
2022
Amounts in Swiss francs

Net loss for the year...………………………………………………………....
Adjustments for:

Depreciation………………….............................................................
Lease modifications related to right-of-use assets……………...…….
Value of share-based services..……………………………….............
Post-employment benefits……………...............................................
Finance cost net....………….……….…………………………………..
Decrease in other financial assets……………………………..…………….
Decrease/ (increase) in trade and other receivables…..…………..………
Decrease/ (increase) in contract asset...…………………………………….
Decrease in prepayments…….……………………..………..……………...
Decrease in payables and accruals……………………………………….....
Increase in deferred income………………………………….....................
Net cash used in operating activities….……………………………..…..

Cash flows from investing activities
Purchase of property, plant and equipment….….……………………........
Proceeds from decrease in non-current financial assets…………..……...
Net cash from/(used in) investing activities……………………………..

Cash flows from financing activities
Proceeds from sale of treasury shares-shelf registration………………….
Costs paid on sale of treasury shares-shelf registration ……….……….…
Proceeds from sale of pre-funded warrants….……....………..……………
Costs paid on sale of pre-funded warrants………………………………….
Proceeds from the exercise of pre-funded warrants………………………..
Costs paid on exercise of pre-funded warrants……………………………..
Sales under sale agency agreement & liquidity agreement movements ..
Costs paid on sale of treasury shares under sale agency agreement…….
Cost paid on issue of treasury shares………………………………………..
Principal element of lease payment..………..………………………………
Interest received……………….……………………………………………...
Interest paid………………..………………………………………………......
Net cash from financing activities…………...........................................

8/9

14
20

7
7
7
7

21
21

(10,556,227)

(20,804,213)

305,952
(318)
1,794,467
(62,643)
312,602
2,317
306,514
140,534
53,386
(613,205)
324,210
(7,992,411)

(6,842)
-
(6,842)

1,159,759
(39,103)
3,382,259
(141,822)
35,981
(21,247)
1,190,753
(8,948)
(53,600)
(281,793)
63,964
(21,607)
5,264,596

323,144
-
3,682,073
(11,393)
215,527
13,980
(252,090)
(21,805)
844,980
(427,388)
-
(16,437,185)

(581)
3,553
2,972

1,224,893
(304,009)
2,841,270
(576,117)
25,241
-
450,973
(3,487)
(248,354)
(288,076)
29,251
(48,897)
3,102,688

Decrease in cash and cash equivalents…………...……………………..

(2,734,657)

(13,331,525)

Cash and cash equivalents at beginning of the year...…………………....
Exchange difference on cash and cash equivalents………………….........
Cash and cash equivalents at end of the year………............................

6,957,086
(356,948)
3,865,481

20,484,836
(196,225)
6,957,086

The Group reports significant non-cash items related to the fair value of the share-based services (note 14) and the depreciation of
right of use assets (note 8).

The accompanying notes form an integral part of these consolidated financial statements.

Page 32 of 71

Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

Notes to the Consolidated Financial Statements
for the years ended December 31, 2023 and 2022
(Amounts in Swiss francs)

1. General information

Addex Therapeutics Ltd (the “Company”), formerly Addex Pharmaceuticals Ltd, and its subsidiaries (together, the “Group”) are a
clinical stage pharmaceutical group applying its leading allosteric modulator drug discovery platform to discovery and development
of small molecule pharmaceutical products, with an initial focus on central nervous system disorders.

The Company is a Swiss stockholding corporation domiciled c/o Addex Pharma SA, Chemin des Aulx 12, CH1228 Plan-les-Ouates,
Geneva, Switzerland and the parent company of Addex Pharma SA, Addex Pharmaceuticals France SAS and Addex Pharmaceuticals
Inc. Its registered shares are traded at the SIX, Swiss Exchange, under the ticker symbol ADXN. On January 29, 2020, the Group
listed on the Nasdaq Stock Market, American Depositary Shares (ADSs) under the symbol “ADXN”, without a new issuance of
securities. ADSs represents shares that continue to be admitted to trading on SIX Swiss Exchange.

These consolidated financial statements have been approved for issuance by the Board of Directors on April 17, 2024.

2. Summary of material accounting policies

The principal accounting policies applied in the preparation of these consolidated financial statements are set out below. These
policies have been consistently applied to all the years presented, unless otherwise stated.

2.1 Basis of preparation

The consolidated financial statements of Addex Therapeutics Ltd have been prepared in accordance with International Financial
Reporting Standards (IFRS) as issued by the International Accounting Standards Board (“IASB”), and under the historical cost
convention.

The preparation of financial statements in conformity with IFRS requires the use of certain critical accounting estimates. It also requires
management to exercise its judgment in the process of applying the Group's accounting policies. The areas involving a higher degree
of judgment or complexity, or areas where assumptions and estimates are significant to the consolidated financial statements are
disclosed in note 4 “Material accounting estimates and judgements”.

Due to rounding, numbers presented throughout these consolidated financial statements, may not add up precisely to the totals
provided. All ratios and variances are calculated using the underlying amount rather than the presented rounded amount.

Where necessary, comparative figures have been revised to conform with the current year 2023 presentation. In particular, the ADS
numbers previously disclosed have been amended following the change in ADS ratio executed on October 23, 2023, from one ADS
to six shares to a new ratio of one ADS to one hundred and twenty shares. The ADS ratio change had the same effect as a one to
twenty ADS reverse split and except as otherwise indicated, all information in these consolidated financial statements gives retroactive
effect to the ADS Ratio Change.

2.2 Standards and interpretations published by the IASB

New and amended standards adopted by the Group

A number of new or amended standards and interpretations became applicable for financial periods beginning on or after January 1,
2023. Of the latter, the Group noted that the amendments of IAS 1 (disclosure of accounting policies) and IAS 8 (definition of
accounting estimates) respectively relating to the definition of accounting estimate and the disclosure of accounting policies are
relevant for the Group but did not have a material impact on the disclosures made in the consolidated financial statements.

There are other new standards, amendments to standards and interpretations which have been deemed by the Group as currently
not relevant, hence are not listed or discussed further here.

New standards and interpretations not yet adopted by the Group

The Group is currently assessing the potential impacts of the various new and revised standards and interpretations that will be
mandatory from January 1, 2024 which the Group has not yet applied. Based on an analysis to date, the Group does not anticipate
that these will have a material impact on the Group’s overall results and financial position. The Group is also assessing other new
and revised standards which are not mandatory until after 2024.

Page 33 of 71

Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

2.3 Consolidation

Subsidiaries are all entities over which the Group has control. The Group controls an entity when the Group is exposed to, or has
rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the
entity. Subsidiaries are fully consolidated from the date on which control is transferred to the Group. They are de-consolidated from
the date that control ceases.

The Company currently consolidates the financial operations of its three fully-owned subsidiaries, Addex Pharma SA, Addex
Pharmaceuticals Inc., and Addex Pharmaceuticals France SAS.

Inter-company transactions, balances and unrealized gains on transactions between Group companies are eliminated. Unrealized
losses are also eliminated unless the transaction provides evidence of an impairment of the asset transferred. Accounting policies of
subsidiaries have been changed where necessary to ensure consistency with the policies adopted by the Group. The reporting date
of all Group companies is December 31.

2.4 Segment reporting

The Group operates in one segment, which is the discovery, development and commercialization of small-molecule pharmaceutical
products. A single management team that reports to the Chief Executive Officer comprehensively manages the entire business. The
chief operating decision-maker is the Chief Executive Officer who reviews the statement of operations of the Group on a consolidated
basis, makes decisions and manages the operations of the Group as a single operating segment. The Group’s activities are not
affected by any significant seasonal effect. Revenue is attributable to the Company’s country of domicile, Switzerland.

2.5 Foreign currency transactions

Functional and presentation currency
Items included in the financial statements of each of the Group's entities are measured using the currency of the primary economic
environment in which the entity operates ("the functional currency"). The consolidated financial statements are presented in Swiss
francs, which is the Group’s presentation currency.

Transactions and balances
Foreign currency transactions are translated into the functional currency using the exchange rates prevailing at the dates of the
transactions or valuation where items are re-measured. Foreign exchange gains and losses resulting from the settlement of such
transactions and from the translation at year-end exchange rates of monetary assets and liabilities denominated in foreign currencies
are recognized in the statement of comprehensive loss.

Foreign exchange gains and losses that relate to borrowings and cash and cash equivalents are presented in the statement of
comprehensive loss within ‘finance result’.

Group companies
The results and financial position of the Group's subsidiary that has a functional currency different from the presentation currency are
translated into the presentation currency as follows:





assets and liabilities for each balance sheet presented are translated at the closing rate at the date of that balance sheet;
income and expenses for each statement of comprehensive loss are translated at the average exchange rate; and
all resulting exchange differences are recognized in other comprehensive loss.

2.6 Property, plant and equipment

Property, plant and equipment are stated at historical cost less accumulated depreciation, and impairment (if any). Historical cost
includes expenditure that is directly attributable to the acquisition of the item. Subsequent costs are included in the asset's carrying
amount or recognized as a separate asset, as appropriate, only when it is probable that future economic benefits associated with the
item will flow to the Group and the cost of the item can be measured reliably. All other repairs and maintenance are charged to the
statement of comprehensive loss during the financial period in which they are incurred. Depreciation is calculated using the straight-
line method to allocate their cost to their residual values over their estimated useful lives as follows:

Computer equipment
Laboratory equipment
Furniture and fixtures
Chemical library

3 years
4 years
5 years
5 years

The assets' residual values and useful lives are reviewed, and adjusted if appropriate, at each balance sheet date. An asset's carrying
amount is written down immediately to its recoverable amount if the asset's carrying amount is greater than its estimated recoverable
amount (see note 2.7). Gains and losses on disposals are determined by comparing proceeds with the carrying amount and are
included in the statement of comprehensive loss.

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Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

2.7 Financial assets

The Group has one category of financial assets, namely “trade and other receivables”. Trade and other receivables are non-derivative
financial assets with fixed or determinable payments that are not quoted in an active market. These assets are held for collection of
contractual cash flows which represent solely the payment of principal and interest. They arise when the Group provides money,
goods or services directly to a debtor with no intention of trading the receivable. They are included in current assets, except for
maturities greater than 12 months after the balance sheet date, which are classified as non-current assets. Trade and other
receivables are included in other current assets in the balance sheet (see note 7).

Trade and other receivables are initially measured at fair value and subsequently measured at amortized cost and are derecognized
when settled.

The Group classifies a contract asset as a receivable when the Group’s right to consideration is unconditional. If the Group transfers
control of goods or services to a customer before the customer pays consideration, the Group records either a contract asset or a
receivable depending on the nature of the Group’s right to consideration for its performance. Contract assets and contract liabilities
arising from the same contract are netted and presented as either a single net contract asset or net contract liability.

Impairment of financial assets
The Group recognizes a loss allowance for expected credit losses on trade and other receivables, contract assets and security rental
deposits that are measured at amortized cost. The amount of expected credit losses is updated at each reporting date to reflect
changes in credit risk since initial recognition of the respective financial instrument.

The Group always recognizes lifetime expected credit losses (“ECL”) for trade and other receivables and contract assets where
applicable. The ECL on these financial assets are estimated using a provision matrix based on the Group’s historical credit loss
experience, adjusted for factors that are specific to the debtors, general economic conditions and an assessment of both the current
as well as the forecast direction of conditions at the reporting date, including time value of money where appropriate.

Lifetime ECL represents the ECL that will result from all possible default events over the expected life of a financial instrument. In
contrast, 12-month ECL represents the portion of lifetime ECL that is expected to result from default events on a financial instrument
that are possible within 12 months after the reporting date.

2.8 Cash and cash equivalents

Cash and cash equivalents include cash on hand, deposits held at call with banks and other short-term highly liquid investments with
original maturities of three months or less. They are both readily convertible to known amounts of cash and so near their maturity that
they present insignificant risk of changes in value because of changes in interest rates. Any bank overdrafts are not netted against
cash and cash equivalents but are shown as part of current liabilities on the consolidated balance sheet.

2.9 Share capital

Shares are classified as equity. Incremental costs directly attributable to the issue of new shares are shown as a deduction, net of
tax, from the proceeds.

Where any Group company purchases the Company's equity share capital (treasury shares), the consideration paid, including any
directly attributable incremental cost (net of income taxes) is recorded as a deduction from equity attributable to the Company's equity
holders as a treasury share reserve until the shares are cancelled, reissued or disposed of. When such shares are subsequently sold
or reissued, any consideration received, net of any directly attributable incremental transaction costs and the related income tax effect,
the nominal amount is reversed from the treasury share reserve, with any remaining difference to the total transaction value being
recognized in share premium.

The Company has entered into a liquidity contract where an independent broker buys and sells the Company’s shares held in the
broker’s custody. Such shares are presented in the treasury share reserve with all other treasury shares directly held by Addex
Pharma SA.

The Group also uses treasury shares to partially settle services rendered by third and related parties. When shares are issued for this
purpose, the nominal share value is recognized as a treasury share reserve and the value above par is presented as a share premium.

2.10 Equity instruments

Shares issued by the Group and the sale of pre-funded warrants are both recorded at the fair value of the proceeds received, net of
direct issuance costs. The fair value of pre-funded warrants sold is recorded in equity at the grant date. The Group grants from time-
to-time warrants to brokers and investors. The fair value of the warrants is recorded in equity at the grant date.

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Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

2.11 Trade payables

Trade payables are recognized initially at fair value and subsequently measured at amortized cost using the effective interest method.
All payables have a contract maturity within 1 year.

2.12 Grants

Grants are not recognized until there is reasonable assurance that the Group will comply with the terms and conditions of the grant
and that the grants will be received. Grants are recognized as other income in the statement of comprehensive loss on a systematic
basis over the periods in which the Group recognizes as expenses the related costs for which the grant is intended to compensate.
Specifically, grants whose primary conditions are that the Group should undertake specific research activities within a defined period
of time, are recognized as deferred income in the consolidated statement of financial position and transferred to the statement of
comprehensive loss on a systematic and rationale basis over the defined timeframe.

2.13 Deferred income tax

Deferred income tax is recorded in full, using the liability method, on temporary differences arising between the tax bases of assets
and liabilities and their carrying amounts in the consolidated financial statements. However, if the deferred income tax arises from
initial recognition of an asset or liability in a transaction other than a business combination that at the time of the transaction affects
neither accounting nor taxable profit or loss, it is not accounted for. Deferred income tax is determined using tax rates and laws that
have been enacted or substantively enacted by the balance sheet date and are expected to apply when the related deferred income
tax asset is realized, or the deferred income tax liability is settled.

Deferred income tax assets are recognized to the extent that it is probable that future taxable profit will be available against which the
temporary differences can be utilized.

Deferred income tax is recorded on temporary differences arising on investments in subsidiaries, except where the Group deems it
probable that the temporary difference will not reverse in the foreseeable future.

Potential deferred income tax assets from tax loss carry forwards exceed deferred tax liabilities. Deferred income tax assets from tax
loss carry forwards are initially recognized to the extent that the realization of the related tax benefit through future taxable profits is
probable.

2.14 Pension obligations

The Group operates one pension scheme. The scheme is generally funded through payments to insurance companies or trustee-
administered funds, determined by periodic actuarial calculations. The Group has defined benefit plans. A defined benefit plan is a
pension plan that defines an amount of pension benefit that an employee will receive on retirement, usually dependent on one or
more factors such as age, years of service and compensation. Actuarial gains and losses arising from experience adjustments,
changes in actuarial assumptions and changes in the asset ceiling effect are recognized immediately in other comprehensive loss
and past-service costs are recognized immediately in statement of comprehensive loss.

Under IAS 19, the shortfall or the surplus of the fair value of the plan assets compared with the defined benefit obligation is recorded
as a liability or an asset in the consolidated balance sheet. That recognition is subject to asset ceiling rules and minimum funding
requirements set out in IFRIC 14. The defined benefit obligation is calculated at least annually by an independent actuary using the
projected unit credit method. The present value of the defined benefit obligation is determined by discounting the estimated future
cash outflows using interest rates of high-quality corporate bonds that are denominated in the currency in which the benefits will be
paid, and that have terms to maturity approximating to the terms of the related pension liability.

2.15 Share-based compensation

The Group operates an equity sharing certificates’ equity incentive plan, a share option plan, and a share purchase plan. The fair
value of the services received in exchange for the grant or transfer of equity sharing certificates, options, shares is recognized in the
consolidated financial statements over the period for which the services are received. The total amount to be recognized over the
vesting period is determined by reference to the fair value of the equity incentive unit granted or transferred. The fair value of
instruments granted includes any market performance conditions and excludes the impact of any service and non-market performance
vesting conditions. Service and non-market performance conditions are included in assumptions about the number of equity incentive
units that are expected to vest. At each balance sheet date, the Group revises its estimates for the number of equity incentive units
that are expected to vest. It recognizes the impact of the revision to original estimates, if any, in the statement of comprehensive loss,
with a corresponding adjustment to equity. The proceeds received net of any directly attributable transaction costs are credited to
share capital (nominal value) and share premium when the equity incentive units are exercised.

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Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

2.16 Revenue recognition

The Group recognizes revenue from the license of intellectual property and providing research and development services:

License of intellectual property
If the license to the Group’s intellectual property is determined to be distinct from the other performance obligations identified in the
arrangement, the Group recognizes revenues when the license conveys a right of use, or there is a right of access to the underlying
intellectual property. For licenses that are sold in conjunction with a related service, the Group uses judgment to assess the nature of
the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point
in time. If the performance obligation is settled over time, the Group determines the appropriate method of measuring progress for
purposes of recognizing license revenue. The Group evaluates the measure of progress each reporting period and, if necessary,
adjusts the measure of performance and related revenue recognition.

Research and development services
The Group has an arrangement with its partner that includes deploying its employees for research and development activities. The
Group assesses if these research and development activities are considered distinct in the context of the respective contract and, if
so, they are accounted for as a separate performance obligation. This revenue is calculated based on the costs incurred (input
method) in accordance with the respective contract and recorded within “Revenue from contract with customer” over time as the
activities are performed.

Contract balances
The Group receives payments and determines credit terms from its customers for its various performance obligations based on billing
schedules established in each contract. The actual timing of the income recognition, billings and cash collections may result in other
current receivables, accrued revenue (contract assets), and deferred revenue (contract liabilities) being recorded on the balance
sheet. Amounts are recorded as other current receivables when the Group’s right to consideration is unconditional. The Group does
not assess whether a contract has a significant financing component if the expectation at contract inception is such that the period
between payment by the customer and the transfer of the promised goods or services to the customer will be one year or less.

Under IFRS 15, the Group recognizes as revenue its non-refundable license fees, milestone, research activities and royalties when
its customer obtains control of promised services, in an amount that reflects the consideration which the Group expects to receive in
exchange for those rendered services. At contract inception, once the contract is determined to be within the scope of IFRS 15, the
Group assesses the services promised within each contract and determine those that are performance obligations and assess
whether each promised service is distinct. The Group uses the most likely method to estimate any variable consideration and include
such consideration in the amount of the transaction price based on an estimated stand-alone selling price. Revenue is recognized for
the respective performance obligation when (or as) the performance obligation is satisfied.

2.17 Finance income and expense

Interest received or paid on cash and cash equivalents are classified in the statement of cash flows under financing activities.

2.18 Leases

The Group assesses whether a contract is or contains a lease, at inception of the contract. The Group recognizes a right-of-use asset
and a corresponding lease liability with respect to all lease arrangements in which it is the lessee, except for short-term leases (defined
as leases with a lease term of 12 months or less) and leases of low value assets (less than USD 5 thousand). For these leases, the
Group recognizes the lease payments as an operating expense on a straight-line basis over the term of the lease unless another
systematic basis is more representative of the time pattern in which economic benefits from the leased assets are consumed.

The lease liability is initially measured at the present value of the lease payments as from the commencement date of the lease until
the expected termination date. In determining the lease term, management consider all facts and circumstances that create an
economic incentive to exercise an extension option, or not to exercise a termination option. Extension option are only considered if
the lease is reasonably certain to be extended. The assessment of reasonable certainty is only revised if a significant event or a
significant change in circumstances, that is within the control of the lessees, occurs.

The right-of-use assets comprise the initial measurement of the corresponding lease liability, lease payments made at or before the
commencement day, less any lease incentives received and any initial direct costs. They are subsequently measured at cost less
accumulated depreciation and impairment losses. They are depreciated over the shorter period of lease term and useful life of the
underlying asset. If a lease transfers ownership of the underlying asset or the cost of the right-of-use asset reflects that the Group
expects to exercise a purchase option, the related right-of-use asset is depreciated over the useful life of the underlying asset. The
depreciation starts at the commencement date of the lease. The right-of-use assets are presented as a separate line in the
consolidated statement of financial position.

All lease payments on leases are presented as part of the cash flow from financing activities, except for the short-term and low value
leases cash flows, which are booked under operating activities.

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Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

2.19 Research and development

Research and development costs are expensed as incurred. Costs incurred on development projects are recognized as intangible
assets when the following criteria are fulfilled:

it is technically feasible to complete the intangible asset so that it will be available for use or sale;


 management intends to complete the intangible asset and use or sell it;




there is an ability to use or sell the intangible asset;
it can be demonstrated how the intangible asset will generate probable future economic benefits;
adequate technical, financial and other resources to complete the development and to use or sell the intangible asset are
available; and
the expenditure attributable to the intangible asset during its development can be reliably measured.



In the opinion of management, due to uncertainties inherent in the development of the Group's products, the criteria for development
costs to be recognized as an asset, as prescribed by IAS 38, “Intangible Assets”, are not met.

3. Financial risk management

3.1 Financial risk factors

The Group's activities expose it to a variety of financial risks: market risk, credit risk, liquidity risk and capital risk. The Group's overall
risk management program focuses on the unpredictability of financial markets and seeks to minimize potential adverse effects on the
Group's financial performance. Risk management is carried out by the Group's finance department (Group Finance) under the policies
approved by the Board. Group Finance identifies, evaluates and in some instances economically hedges financial risks in close co-
operation with the Group's operating units. The Board provides written guidance for overall risk management, as well as written
policies covering specific areas, such as foreign exchange risk, interest-rate risk, use of derivative financial instruments and non-
derivative financial instruments, credit risk and investing excess liquidity.

Market risk and foreign exchange risk
The Group operates internationally and is exposed to foreign exchange risk arising from various exposures with respect to the Euro,
US dollar and UK pound. Foreign exchange risk arises from future commercial transactions, recognized assets and liabilities and net
investments in foreign operations. To manage foreign exchange risk Group Finance maintains foreign currency cash balances to
cover anticipated future requirements. The Group's risk management policy is to economically hedge 50% to 100% of anticipated
transactions in each major currency for the subsequent 12 months. The Group has a subsidiary in France and in United States of
America, whose net assets are exposed to foreign currency translation risk. In 2023, a 10% increase or decrease in the EUR/CHF
exchange rate would have resulted in a CHF 4,901( 2022: CHF 7,945) decrease or increase in net loss and shareholders’ equity as
at December 31, 2023 a 10% increase or decrease in the GBP/CHF exchange rate would have resulted in a CHF 15,203 decrease
or increase in net loss and shareholders’ equity as at December 31, 2023 (2022: a CHF 1,470 increase or decrease) and a 10%
increase or decrease in the USD/CHF exchange rate would have resulted in a CHF 166,581 (2022: CHF 175,837) increase or
decrease in net loss and shareholders’ equity as at December 31, 2023. The Group is not exposed to equity price risk or commodity
price risk as it does not invest in these classes of investment.

Interest rate risk
The Group’s exposure to interest rate fluctuations is limited because the Group has no interest-bearing indebtedness.

Credit risk
Credit risk is managed on a Group basis. Credit risk arises from cash and cash equivalents and deposits with banks, as well as credit
exposures to collaboration partners. The Group has a limited number of collaboration partners and consequently has a significant
concentration of credit risk. The Group has policies in place to ensure that credit exposure is kept to a minimum and significant
concentrations of credit risk are only granted for short periods of time to high credit quality partners. The Group's policy is to invest
funds in low-risk investments including interest bearing deposits. For banks and financial institutions, only independently rated parties
with a minimum rating of “A” are accepted (see note 6).

Liquidity risk
The Group's principal source of liquidity is its cash reserves which are obtained through the sale of new shares and to a lesser extent
the sale of its research and development stage products. Group Finance monitors rolling forecasts of the Group’s liquidity
requirements to ensure it has sufficient cash to meet operational needs. The ability of the Group to maintain adequate cash reserves
to sustain its activities is highly dependent on the Group's ability to raise further funds from the licensing of its development stage
products and the sale of new shares. Consequently, the Group is exposed to significant liquidity risk (see note 4).

3.2 Capital risk management

The Group is not regulated and not subject to specific capital requirements. The amount of equity depends on the Group’s funding
needs and statutory capital requirements. The Group monitors capital periodically on an interim and annual basis. From time to time,
the Group may take appropriate measures or propose capital increases to its shareholders to ensure the necessary capital remains
intact. The Group did not have any short-term or long-term debt outstanding as of December 31, 2023 and 2022.

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Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

The ability of the Group to maintain adequate cash reserves to continue its activities is subject to risk as it is highly dependent on the
Group’s ability to raise further funds from the sale of new shares.
The Group’s objectives when managing capital based on its net debt are to safeguard the Group’s ability to continue as a going
concern in order to ensure the financing of successful research and development activities so that future profits can be generated
and to maintain sufficient financial resources to mitigate against risks and unforeseen events.

A reconciliation of the net debt position is detailed as follows:

Net debt as at January 1, 2022………………………

Cash flows…………..……………………………………
Effect of modification to lease terms…………………...
Foreign exchange differences…..……………………...
Net debt as at December 31, 2022…………………...

Cash flows…………..……………………………………
Effect of modification to lease terms…………………..
Foreign exchange differences…..……………………...
Net debt as at December 31, 2023……………………

Leases

(482,014)

288,076
(179,197)
-
(373,135)

281,793
(252,994)
-
(344,336)

Cash and
cash
equivalents
20,484,836

(13,331,525)
-
(196,225)
6,957,086

(2,734,657)
-
(356,948)
3,865,481

Other
financial
assets

Total

17,145

20,019,967

(13,980)
-
-
3,165

(2,317)
-
-
848

(13,057,429)
(179,197)
(196,225)
6,587,116

(2,455,181)
(252,994)
(356,948)
3,521,993

In addition, the maturity profile of the Group’s financial liabilities is presented in the table below:

At December 31, 2023

Lease Liabilities………………………………………….

At December 31, 2022

Lease Liabilities………………………………………….

Less
than
1 Year
293,399

Less
than
1 Year
305,294

1 to 5
Years

72,350

1 to 5
Years

90,684

More
than
5 Years
-

Total
cash out
flows
365,749

Carrying
amount
liabilities
344,336

More
than
5 Years
-

Total
cash out
flows
395,978

Carrying
amount
liabilities
373,135

Lease liabilities relate to the rent of laboratories, equipment, offices and related spaces used by the Group.

3.3 Fair value estimation

The nominal value less estimated credit adjustments of trade and other receivables, contract assets and payables are assumed to
approximate to their fair values due to the short-term maturity of these instruments and are held at their amortized cost in accordance
with IFRS 9. The fair value of other financial assets and liabilities for disclosure purposes is estimated by discounting the future
contractual cash flows at the current market interest rate that is available to the Group for similar financial instruments.

4. Material accounting estimates and judgments

The Group makes estimates and assumptions concerning the future. These estimates and judgments are continually evaluated and
are based on historical experience and other factors, including expectations of future events that are believed to be reasonable under
the circumstances. The resulting accounting estimates will, by definition, seldom equal the related actual results. The estimates and
assumptions that have a significant risk of causing a material adjustment to the carrying amounts of assets and liabilities or may have
had a significant impact on the reported results are disclosed below:

Going concern
The Group’s accounts are prepared on a going concern basis. To date, the Group has financed its cash requirements primarily from
share issuances, licensing certain of its research and development stage products and selling its allosteric modulator drug discovery
technology platform and a portfolio of preclinical programs. The Group is a development-stage enterprise and is exposed to all the
risks inherent in establishing a business. The Group expects that its existing cash and cash equivalents, at the issuance date of these
audited consolidated financial statements will be sufficient to fund its operations and meet all of its obligations as they fall due, through
2026. The future viability of the Group is dependent on its ability to raise additional capital through public or private financings or
collaboration agreements to finance its future operations, which may be delayed due to reasons outside of the Group’s control
including health pandemics and geopolitical risks. The sale of additional equity may dilute existing shareholders. The inability to obtain
funding, as and when needed, would have a negative impact on the Group’s financial condition and ability to pursue its business
strategies. If the Group is unable to obtain the required funding to run its operations and to develop and commercialize its product

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Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

candidates, the Group could be forced to delay, reduce or stop some or all of its research and development programs to ensure it
remains solvent. Management continues to explore options to obtain additional funding, including through collaborations with third
parties related to the future potential development and/or commercialization of its product candidates. However, there is no assurance
that the Group will be successful in raising funds, closing collaboration agreements, obtaining sufficient funding on terms acceptable
to the Group, or if at all, which could have a material adverse effect on the Group’s business, results of operations and financial
condition.

The Business of the Group could be adversely affected by health pandemics and geopolitical risks
The business of the Group could be adversely affected by health epidemics and geopolitical risks in regions where the Group or
partners have concentrations of clinical trial sites or other business operations and could cause significant disruption in the operations
of third-party manufacturers and CROs upon whom the Group or partners rely. Health pandemics may pose the risk that the Group,
employees, contractors, collaborators, and partners may be prevented from conducting certain pre-clinical tests, clinical trials or other
business activities for an indefinite period of time, including due to travel restrictions, quarantines, “stay-at-home” and "shelter-in-
place" orders or shutdowns that have been or may in the future be requested or mandated by governmental authorities. For example,
the COVID-19 pandemic has impacted and could in the future impact the business of the Group and ongoing and planning clinical
trials led by the Group or partners, including as a result of delays or difficulties in clinical site initiation, difficulties in recruiting and
retaining clinical site investigators and clinical site staff and interruption of the clinical supply chain or key clinical trial activities, such
as clinical trial site monitoring, and supply chain interruptions caused by restrictions for the supply of materials for drug candidates or
other materials necessary to manufacture product to conduct clinical and preclinical tests. Geopolitical risks such as Russia-Ukraine
war or Middle East conflict may create global security concerns including the possibility of an expanded regional or global conflict and
potential ramifications such as disruption of the supply chain including research and development activities being conducted by the
Group and its strategic partners. The Group and partners rely on global networks of contract research organizations to engage clinical
study sites and enroll patients, certain of which are in Russia and Ukraine. Delays in research and development activities of the Group
and its partners could increase associated costs and, depending upon the duration of any delays, require the Group and its partners
to find alternative suppliers at additional expense. In addition, Russia-Ukraine war has had significant ramifications on global financial
markets, which may adversely impact the ability of the Group to raise capital on favorable terms or at all.

Revenue recognition
Revenue is primarily from fees related to licenses, milestones and research services. Given the complexity of the relevant agreements,
judgements are required to identify distinct performance obligations; allocate the transaction price to these performance obligations
and determine when the performance obligations are met. In particular, the Group’s judgement over the estimated stand-alone selling
price which is used to allocate the transaction price to the performance obligations is disclosed in note 15.

Grants
Grants are recorded at their fair value when there is reasonable assurance that they will be received and recognized as income when
the Group has satisfied the underlying grant conditions. In certain circumstances, grant income may be recognized before explicit
grantor acknowledgement that the conditions have been met.

Accrued research and development costs
The Group records accrued expenses for estimated costs of research and development activities conducted by third party service
providers. The Group records accrued expenses for estimated costs of research and development activities based upon the estimated
amount of services provided, but not yet invoiced, and these costs are included in accrued expenses on the balance sheets and within
research and development expenses in the statements of comprehensive loss. These costs are a significant component of research
and development expenses. Accrued expenses for these costs are recorded based on the estimated amount of work completed in
accordance with agreements established with these third parties. Due to the nature of estimates, the Group may be required to make
changes to the estimates after a reporting period as it becomes aware of additional information about the status or conduct of its
research activities.

Share-based compensation
The Group recognizes an expense for share-based compensation based on the valuation of equity incentive units using the Black-
Scholes valuation model. A number of assumptions related to the volatility of the underlying shares and to the risk-free rate are made
in this model. Should the assumptions and estimates underlying the fair value of these instruments vary significantly from
management's estimates, then the share-based compensation expense would be materially different from the amounts recognized.
Had these assumptions been modified within their feasible ranges, i.e. a 20% increase or decrease in the volatility assumption for the
twelve-month period ended December 31, 2023 (a 10% increase or decrease in the volatility assumption for the twelve-month period
ended December 31, 2022) and a risk-free rate of 1 or 0.5 for the twelve-month period ended December 31, 2023 (0.5 or 0 for the
twelve-month period ended December 31, 2022), and the Group calculated the share-based compensation based on the higher and
lower values of these ranges, share-based compensation expense in 2023 would have been CHF 1.3 million or CHF 2.1 million
respectively (2022: CHF 3.0 million or CHF 4.3 million, respectively). This is compared to the amount recognized as an expense in
2023 of CHF 1.8 million (2022: CHF 3.7 million). Additional information is disclosed in note 14.

Equity instruments
The group records in equity the pre-funded warrants sold to investors and the warrants granted to investors at a fair value calculated
using Black-Scholes model.

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Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

Pension obligations
The present value of the pension obligations is calculated by an independent actuary and depends on a number of assumptions that
are determined on an actuarial basis such as discount rates, future salary and pension increases, and mortality rates. Any changes
in these assumptions will impact the carrying amount of pension obligations. The Group determines the appropriate discount rate at
the end of each period. This is the interest rate that should be used to determine the present value of estimated future cash outflows
expected to be required to settle the pension obligations. In determining the appropriate discount rate, the Group considers the interest
rates of high-quality corporate bonds that are denominated in the currency in which the benefits will be paid, and that have terms to
maturity approximating the terms of the related pension liability. Other key assumptions for pension obligations are based in part on
current market conditions. Additional information is disclosed in note 20.

5. Segment information

Management has identified one single operating segment, related to the discovery, development and commercialization of small-
molecule pharmaceutical products.

Information about products, services and major customers
External income of the Group for the years ended December 31, 2023 and 2022 is derived from the business of discovery,
development and commercialization of pharmaceutical products. Income was earned from rendering of research services to a
pharmaceutical company and grants earned.

Information about geographical areas
External income is exclusively recorded in the Swiss operating company.

Analysis of revenue from contract with customer and other income by nature is detailed as follows:

Collaborative research funding…………………….......
Grants earned…………………………………...............
Other service income…………………………………....
Total …..………………………………………………….

2023
1,612,953
29,881
4,235
1,647,069

2022
1,422,438
-
22,521
1,444,959

Analysis of revenue from contract with customer and other income by major counterparties is detailed as follows:

Indivior PLC ……………………………………………...
Eurostars/Innosuisse……………...…………………….
Other counterparties………………………………….…
Total …………………..……………………………..…..

2023
1,612,953
29,881
4,235
1,647,069

2022
1,422,438
-
22,521
1,444,959

For more detail, refer to note 15, “Revenue from contract with customer” and note 16 “Other Income”.

The geographical allocation of long-lived assets is detailed as follows:

Switzerland………………...……………………….........
France………………………………………………….....
Total…….…………………..………………...................

The geographical analysis of operating costs is as follows:

December 31, 2023
406,946
334
407,280

December 31, 2022
452,732
357
453,089

Switzerland…………….………………………..............
United States of America……………………................
France…………………………………...………….........
Total operating costs (note 17) ………………….......

2023
11,912,110
11,890
4,368
11,928,368

2022
21,933,056
27,513
4,597
21,965,166

There was capital expenditure of CHF 6,842 in 2023 and CHF 581 in 2022.

Page 41 of 71

Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

6. Cash and cash equivalents

Cash at bank and on hand……………………..............
Total cash and cash equivalents………………........

December 31, 2023
3,865,481
3,865,481

December 31, 2022
6,957,086
6,957,086

Split by currency:

CHF……………...………………………………..……...
USD………….……………………………………………
EUR………...………………………………..……..........
GBP……………………………………………………….
Total………………………………………………………

December 31, 2023
39.88%
56.22%
3.03%
0.87%
100.00%

December 31, 2022
52.98%
42.10%
2.69%
2.23%
100.00%

The Group no longer pays interest on CHF cash and cash equivalents from the third quarter of 2022 whilst it earns interest on USD
cash and cash equivalents. The Group invests its cash balances into a variety of current and deposit accounts mainly with one Swiss
bank whose external credit rating is P-1/A-1.

All cash and cash equivalents were held either at banks or on hand as of December 31, 2023 and December 31, 2022.

Credit quality of cash and cash equivalents

The table below shows the cash and cash equivalents by credit rating of the major counterparties:

External credit rating of counterparty
P-1 / A-1………...……..……........................................
P-2 / A-1…………………………………………………..
Other………………………………………………………
Cash on hand………………………..…………………...
Total cash and cash equivalents………...................

December 31, 2023
3,269,523
286,399
309,446
113
3,865,481

December 31, 2022
3,708,603
3,031,028
217,335
120
6,957,086

External credit ratings of counterparties were obtained from Moody’s (P-) or Standard & Poor’s (A-).

7. Other current assets

Other financial assets……………………………………
Trade and other receivables……………….…………...
Contract asset (Indivior PLC).……………..…………...
Prepayments………..…………....................................
Total other current assets……………………..…......

December 31, 2023
848
110,361
40,907
217,008
369,124

December 31, 2022
3,165
416,875
181,441
270,394
871,875

Other current assets decreased by CHF 0.5 million as of December 31, 2023 compared to December 31, 2022 mainly due to a
decrease of CHF 0.4 million in the combined amount of contract assets, trade and other receivables, primarily related to the research
agreement with Indivior for CHF 0.3 million and to the grant from Eurostars/Innosuisse for CHF 0.1 million. The Group applies the
IFRS 9 simplified approach to measuring expected credit losses (“ECL”), which uses a lifetime expected loss allowance for all contract
assets, trade receivables and other receivables. The Group has considered that the contract asset, trade receivables and other
receivables have a low risk of default based on historic loss rates and forward-looking information on macroeconomic factors affecting
the ability of the third parties to settle invoices. As a result, expected loss allowance has been deemed as nil as of December 31,
2023 and December 31, 2022.

8. Right-of-use assets

Year ended December 31, 2022
Opening net book amount………………………………
Depreciation charge……………………………………..
Effect of lease modifications……………………………
Closing net book amount…………..…………….......

Properties

Equipment

Total

456,885
(277,069)
173,281
353,097

13,104
(14,504)
5,916
4,516

469,989
(291,573)
179,197
357,613

Page 42 of 71

Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

As of December 31, 2022
Cost…………………......……………............................
Accumulated depreciation………………..…………….
Net book value……………...…………………………..

Properties

Equipment

1,471,850
(1,118,753)
353,097

13,542
(9,026)
4,516

Total
1,485,392
(1,127,779)
357,613

Year ended December 31, 2023
Opening net book amount……………………………...
Depreciation charge……………………………………..
Effect of lease modifications……………………………
Closing net book amount…………..…………….......

Properties

Equipment

Total

353,097
(277,885)
253,312
328,524

4,516
(2,708)
-
1,808

357,613
(280,593)
253,312
330,332

As of December 31, 2023
Cost…………………......……………............................
Accumulated depreciation………………..…………….
Net book value……………...…………………………..

Properties

Equipment

1,725,162
(1,396,638)
328,524

13,542
(11,734)
1,808

Total
1,738,704
(1,408,372)
330,332

For the year ended December 31, 2023, the Group recorded a depreciation charge of CHF 0.2 million (2022: CHF 0.2 million) as part
of research and development expenses and CHF 0.1 million (2022: CHF 0.1 million) as part of general and administration expenses.
The total cash outflows for the principal element of lease payment amounted to CHF 0.3 million for the years ended December 31,
2023 and 2022. The maturity analysis of lease liabilities is presented under note 3.2.

9. Property, plant and equipment

Year ended December 31, 2022
Opening net book amount…..…………………………..
Additions………..………………………………………...
Depreciation charge…...………………………………..
Closing net book amount…...………………………...

As of December 31, 2022
Cost……………………………………………………….
Accumulated depreciation……..……………………….
Net book value………..………………………………...

Year ended December 31, 2023
Opening net book amount……..………………………..
Additions……………..…………………………………...
Depreciation charge…….…..…………………………..
Closing net book amount……..................................

As of December 31, 2023
Cost………………..……………………………………...
Accumulated depreciation………................................
Net book value………..………………………………...

Equipment
72,111
581
(31,571)
41,121

Equipment
1,714,409
(1,673,288)
41,121

Equipment
41,121
6,842
(25,359)
22,604

Equipment
1,721,251
(1,698,647)
22,604

Furniture &
fixtures
-
-
-
-
Furniture &
fixtures
7,564
(7,564)
-
Furniture &
fixtures
-
-
-
-
Furniture &
fixtures
7,564
(7,564)
-

Chemical
library
-
-
-
-
Chemical
library
1,207,165
(1,207,165)
-
Chemical
library
-
-
-
-
Chemical
library
1,207,165
(1,207,165)
-

Total
72,111
581
(31,571)
41,121

Total
2,929,138
(2,888,017)
41,121

Total
41,121
6,842
(25,359)
22,604

Total
2,935,980
(2,913,376)
22,604

For the year ended December 31, 2023, the Group recorded a depreciation charge of CHF 22,572 (2022: CHF 26,615) as part of
research and development expenses and CHF 2,787 (2022: CHF 4,956) as part of general and administration expenses.

Page 43 of 71

Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

10. Non-current financial assets

Security rental deposits.………………………………...
Total non-current financial assets…………………..

December 31, 2023
54,344
54,344

December 31, 2022
54,355
54,355

Security rental deposits relate to laboratory and office space. The applicable interest rate to such deposits is immaterial, and therefore,
the value approximates amortized cost.

11. Payables and accruals

Trade payables…………………………………………..
Social security and other taxes……………..…………..
Accrued expenses………..……………………………..
Total payables and accruals………………………….

December 31, 2023
984,384
164,609
1,235,357
2,384,350

December 31, 2022
1,276,546
120,875
1,598,583
2,996,004

All payables mature within 3 months. Accrued expenses and trade payables primarily relate to R&D services from contract research
organizations, consultants and professional fees. The total amount of payables and accruals decreased by CHF 0.6 million as of
December 31, 2023 compared to December 31, 2022 mainly due to reduced clinical development activities. The carrying amounts of
payables do not materially differ from their fair values, due to their short-term nature.

12. Deferred income

The Group expects the deferred income to be recognized as follows:

Expected income recognition in year one after the
balance sheet date……….
Expected income recognition in year two after the
balance sheet date……
Total deferred income………...……………………….

234,978

89,232
324,210

-
-

December 31, 2023

December 31, 2022

The deferred income relates to a grant from Eurostars/Innosuisse. See note 16 “other income” for further information related to the
Eurostars/Innosuisse project.

13. Share capital

Balance as of January 1, 2022…….….……………....
Issue of shares - treasury shares……………………….
Issue of shares - exercise ESOP & ESC………………
Sale of shares under shelf registration…………………
Exercise of pre-funded warrants……………………….
Sale of shares under sale agency agreement…….…..
Net purchase of shares under liquidity agreement……
Balance as of December 31, 2022.….
Shares reclassed as treasury shares under IFRS 2….
Balance as of December 31, 2022 IFRS 2…………...

Number of shares

Common
shares
49,272,952
48,636,476
17,438,883
-
-
-
-
115,348,311
-
115,348,311

Treasury
shares
(11,374,803)
(48,636,476)
-
4,500,000
15,978,570
1,355,248
(36,830)
(38,214,291)
(17,438,833)
(55,653,174)

Total
37,898,149
-
17,438,883
4,500,000
15,978,570
1,355,248
(36,830)
77,134,020
(17,438,883)
59,695,137

Page 44 of 71

Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

Balance as of January 1, 2023.….………..……...
Issue of shares - treasury shares……………………….
Issue of shares - exercise ESOP ………………………
Sale of shares under shelf registration…………………
Exercise of pre-funded warrants (1) ……………………
Sale of shares under sale agency agreement…….…..
Net purchase of shares under liquidity agreement……
Acquisition of shares forfeited from DSPPP………..…
Balance as of December 31, 2023….………………...
Shares reclassed as treasury shares under IFRS 2….
Balance as of December 31, 2023 IFRS 2…………...

Number of shares

Common
shares
115,348,311
32,900,000
12,527,235
-
23,578,950
-
-
-
184,354,496
-
184,354,496

Treasury
shares
(38,214,291)
(32,900,000)
-
7,999,998
-
4,006,373
(43,872)
(7,311)
(59,159,103)
(29,958,807)
(89,117,910)

Total
77,134,020
-
12,527,235
7,999,998
23,578,950
4,006,373
(43,872)
(7,311)
125,195,393
(29,958,807)
95,236,586

(1) In accordance with Swiss law, the issuance of 6,120,000 new shares through the exercise of pre-funded warrants from December 12, 2023 to
December 31, 2023, have been registered in the commercial register on February 20, 2024. As of December 31, 2023, the amount of the share capital
as registered in the commercial register is CHF 1,782,344.96 divided into 178,234,496 shares.

As of December 31, 2023, 125,195,393 shares were outstanding excluding 59,159,103 treasury shares directly held by Addex Pharma
SA and including 29,958,807 outstanding shares benefiting from our DSPPP, considered as treasury shares under IFRS 2 (see note
14). All shares have a nominal value of CHF 0.01. As of December 31, 2022, 77,134,020 shares were outstanding excluding
38,214,291 treasury shares directly held by Addex Pharma SA and including 17,438,883 outstanding shares benefiting from our
DSPPP, considered as treasury shares under IFRS 2. All shares had a nominal value of CHF 0.01 following the reduction of the
nominal value effective on July 26, 2022.

The Group maintains a liquidity agreement with Kepler Cheuvreux (“Kepler”). Under the agreement, the Group has provided Kepler
with cash and shares to enable them to buy and sell the Company’s shares. As of December 31, 2023, 172,072 (December 31, 2022:
128,200) treasury shares are recorded under this agreement in the treasury share reserve and CHF 848 (December 31, 2022: CHF
3,165) is recorded in other financial assets.

During the year 2023, the Group sold 4,006,373 treasury shares under the sale agency agreement with Kepler Cheuvreux at an
average price of CHF 0.30 per share for gross proceeds of CHF 1,193,074 (during the year 2022, the Group sold 1,355,248 treasury
shares at an average price of CHF 0.34 per share for gross proceeds of CHF 464,954).

On December 13, 2023, the company increased its capital from CHF 1,329,483 to CHF 1,782,345 by the issuance of 45,286,185 new
registered shares at a nominal value of CHF 0.01 per share. Of these shares, 29,986,185 has been issued out of our conditional
capital including 17,458,950 shares issued following the exercise of pre-funded warrants granted in the offering executed in April
2023 and 12,527,235 shares issued through the exercise of equity incentive units at a strike price of CHF 0.043 by Board Members,
Executive Managers and employees on November 27, 2023. The payment of the strike price has been deferred under the Group’s
staff retention deferred strike price payment plan (“DSPPP”) and consequently, under IFRS 2, the 12,527,235 shares issued from the
exercise of equity incentive units are considered as treasury shares. The 12,527,235 shares are considered to be legally owned by
the exercising equity incentive unit holders on November 27, 2023. The remaining 15,300,000 shares have been issued from the
capital band of the company and fully subscribed by its 100% owned subsidiary Addex Pharma SA at the nominal value of CHF 0.01.

On October 23, 2023, the ADS ratio was changed from one ADS to six shares to a new ratio of one ADS to one hundred and twenty
shares. The ADS ratio change had the same effect as a one to twenty ADS reverse split and except as otherwise indicated, all
information in these consolidated financial statements gives retroactive effect to the ADS Ratio Change.

On June 14, 2023, the Company increased its capital from CHF 1,153,483 to CHF 1,329,483 through the issuance of 17,600,000
new shares from its capital band to its 100% owned subsidiary, Addex Pharma SA, at the nominal value of CHF 0.01. These shares
are held as treasury shares; hence the operation does not impact the outstanding share capital.

On April 3, 2023, the Group entered into a securities purchase agreement with an institutional investor. The Group sold 7,999,998
treasury shares in the form of ADSs at a price of USD 0.16 (CHF 0.14) per share equivalent to USD 19.00 per ADS (CHF 17.20 per
ADS) and 23,578,950 pre-funded warrant shares in the form of ADSs at a price of USD 0.16 (CHF 0.14 per share) equivalent to
USD 18.80 (CHF 17.02) per ADS totally exercised as of December 31, 2023. As a consequence, 23,578,950 new shares have been
issued from conditional capital of which 6,120,000 have been registered in the commercial register on February 20, 2024 in
accordance with Swiss law. The total gross proceeds from the offering amounted to USD 5.0 million (CHF 4.5 million) and directly
attributable share offering costs of CHF 0.2 million were recorded as a deduction in equity. In addition, the Group granted the
institutional investor, 31,578,948 warrant shares exercisable in the form of ADSs with an exercise price of USD 0.17 (CHF 0.15) per
share equivalent to USD 20.00 (CHF 18.11) per ADS and an exercise period expiring on April 5, 2028. The fair value of the warrant
shares amounts to CHF 1.78 million and has been recorded in equity as a cost of the offering. The Group also reduced the price to
USD 0.17 (CHF 0.15) per share equivalent to USD 20.00 (CHF 18.11) per ADS and extended the exercise period to April 5, 2028 of

Page 45 of 71

Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

9,230,772 warrant shares exercisable in the form of ADSs and 15,000,000 warrant shares exercisable in the form of ADSs granted
in the securities purchase agreement signed on December 16, 2021 and July 22, 2022, respectively. Therefore, the institutional
investor holds a total of 55,809,720 warrant shares exercisable in the form 465,081 warrant ADSs with an exercise price of USD 0.17
(CHF 0.15) per share equivalent to USD 20.00 (CHF 18.11) per ADS, expiring on April 5, 2028. Additionally, the amendments to the
exercise conditions resulted in an increase in the total fair value of CHF 0.96 million that has been recorded in equity as a cost of the
offering.

On December 15, 2022, the company increased its capital from CHF 979,094 to CHF 1,153,483 through the issuance of 17,438,883
new registered shares at a nominal value of CHF 0.01 per share from its conditional capital following the exercise of 17,438,883
equity incentive units at a strike price of CHF 0.13 by Board Members, Executive Managers and employees on October 26, 2022.
The payment of the strike price has been deferred under the Group’s staff retention deferred strike price payment plan (“DSPPP”)
and consequently, under IFRS 2, the 17,438,883 shares issued from the exercise of equity incentive units are considered as treasury
shares. The 17,438,883 shares are considered to be legally owned by the exercising equity incentive unit holders on October 26,
2022. Of these shares, 7’311 have been forfeited as of December 31, 2023.

On October 31, 2022, the Group increased its capital from CHF 652,730 to CHF 979,094 through the issuance of 32,636,476 new
registered shares from its authorized capital to its fully owned subsidiary, Addex Pharma SA, at CHF 0.01 per share. These shares
are held as treasury shares, hence the operation does not impact the outstanding share capital.

On July 22, 2022, the Group entered into a securities purchase agreement with an institutional investor and sold 4,500,000 treasury
shares in the form of ADSs at a price of USD 0.28 (CHF 0.27 per share) equivalent to USD 34.00 (CHF 32.69) per ADS. In addition,
10,500,000 prefunded warrant shares in the form of ADSs were sold at a price of USD 0.28 (CHF 0.27) per share equivalent to
USD 33.80 (CHF 32.50) per ADS. Of these pre-funded warrant shares 3,960,000 were exercised as of September 30, 2022 and
6,540,000 were exercised during the fourth quarter of 2022. The total gross proceeds from this offering amounted to USD 4.2 million
(CHF 4.1 million). Additionally, all the 5,478,570 pre-funded warrant shares exercisable in the form of ADSs, sold to the same
institutional investor in the securities purchase agreement signed on December 16, 2021, have been exercised during the third quarter
of 2022. The Group additionally granted the institutional investor, 15,000,000 warrant shares exercisable in the form of ADSs with an
exercise price of USD 0.32 (CHF 0.30) per share equivalent to USD 38.00 (CHF 36.54) per ADS and an exercise period of 5 years.
Their fair value amounting to CHF 1.0 million has been recorded in equity as a cost of the offering.

On July 19, 2022, the nominal value of the issued, conditional and authorized share capital has been reduced from CHF 1.00 to
CHF 0.01 effective on the SIX Swiss Exchange and Nasdaq stock market on July 26, 2022. As a consequence, the share capital was
reduced to CHF 652,730. The decrease of CHF 64.6 million in share capital remains in equity and has been reclassed to other equity.
The total number of issued, outstanding, conditional and authorized shares remained the same.

On February 2, 2022, the Company issued 16,000,000 new shares from the authorized capital to its 100% owned subsidiary, Addex
Pharma SA, at CHF 1.00. These shares are held as treasury shares; hence the operation does not impact the outstanding share
capital. Directly attributable share issuance costs of CHF 0.2 million were recorded as a deduction in equity.

14. Share-based compensation

The total share-based compensation expense recognized in the statement of comprehensive loss for equity incentive units granted
to Board Members, Executive Managers, employees and consultants has been recorded under the following headings:

Research and development………………...…………..
General and administration…….……………………....
Total share-based compensation..………………….

2023
570,660
1,223,807
1,794,467

Analysis of share-based compensation by equity incentive plan is detailed as follows:

Equity sharing certificate plan……………...…………..
Share option plans……………………………………….
Total share-based compensation..………………….

2023
-
1,794,467
1,794,467

2022
1,047,398
2,634,675
3,682,073

2022
44,244
3,637,829
3,682,073

The share-based compensation expense decreased by CHF 1.9 million in 2023 compared to 2022 primarily due to higher expenses
in 2022 in the fair value of equity incentive units following reductions in their strike price.

Equity Sharing Certificate Equity Incentive Plan

On June 1, 2010, the Company established an equity incentive plan based on equity sharing certificates (“ESCs”) to provide incentives
to Board Members, Executive Managers, employees and consultants of the Group. Each ESC provides the holder (i) a right to
subscribe for 1,000 shares in the Company, and (ii) a right to liquidation proceeds equivalent to that of shareholders. All rights of the
ESCs expire after their defined exercise period with the ownership of the ESCs reverting to the Group. ESCs granted are subject to

Page 46 of 71

Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

certain vesting conditions based on the service period defined in each grant agreement. The holder of vested ESCs has the right to
subscribe to shares at the subscription price if the underlying share price has reached the floor price. The floor and subscription price
are defined by the Board of Directors in each grant agreement at the time of issuance. In the event of a change in control, all ESCs
are automatically vested. The Group has no legal or constructive obligation to repurchase or settle ESCs in cash.

Movements in the number of share subscription rights attached to the ESCs outstanding are as follows:

At January 1………………………………………
Exercised under the DSPPP……………………
At December 31………………………………….

Average
subscription
prices / floor
prices (CHF)

1.54
0.13
-

2022

198,750
(198,750)
-

At December 31, 2023 and 2022, there are no subscription rights attached to the ESCs .

Employee share option plans (ESOP)

The Company established an employee share option plan to provide incentives to directors, executives, employees and consultants
of the Group.

During 2023, the Group granted the following options with vesting over 4 years and a 10-year exercise period at the grant date as
described in the table below. Grant conditions relating to the strike price have been amended during the year ended December 31,
2023.

January 1, 2023……
May 12, 2023………
July 1, 2023………...
Total 2023….……....

Strike price at
grant date

Expiry date at
grant date

0.101 Dec. 31, 2032
0.13 May 11, 2033
June 30, 2033

0.106

Number of share
options granted
436,677
12,736,209
147,695
13,320,581

Number of share
options repriced to
CHF 0.043 on
November 27 2023
-
12,736,209
-
12,736,209

Number of options
exercised under
the DSPPP

-
12,527,235
-
12,527,235

In 2023, the Group granted 13,320,581 share options of which 12,736,209 were repriced at a strike price of CHF 0.043 on November
27, 2023 and 12,527,235 have been exercised the same day under the DSPPP.

During 2022, the Group granted the following options with vesting over 4 years and a 10-year exercise period at the grant date as
described in the table below. Grant conditions relating to the strike price have been amended during the year ended December 31,
2022.

April 12, 2022………
April 12, 2022………
April 12, 2022……...
May 2, 2022………..
October 5, 2022…...
October 6, 2022……
December 29, 2022.
Total 2022….……....

Strike price at
grant date

Expiry date at
grant date
1.00
April 11, 2032
1.00 Dec. 31, 2031
1.04 Dec. 31, 2031
May 1, 2032
1.00
Oct. 4, 2032
0.13
Oct. 5, 2032
0.13
June 30, 2032
0.20

Number of share
options granted
3,840,657
6,000
49,713
6,000
5,423,076
2,677
108,955
9,437,078

Number of share
options repriced
to CHF 0.19 on
August 2 2022

3,840,657
6,000
-
6,000
-
-
-
3,852,657

Number of share
options repriced
to CHF 0.13 on
October 5 2022
3,840,657
6,000
-
6,000
-
-
-
3,852,657

Number of options
exercised under
the DSPPP

3,738,258
6,000
-
6,000
5,332,547
2,677
-
9,085,482

In 2022, the Group granted 9,437,078 share options of which 3,852,657 were repriced at a strike price of CHF 0.13 on October 5,
2022 and 9,085,482 have been exercised on October 26, 2022 under the DSPPP.

Page 47 of 71

Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

Movements in the number of options outstanding are as follows:

At January 1……………………………………….
Exercised under the DSPPP……………………
Granted……………………………………………
Forfeited…………………………………………...
At December 31………………………………….

Average
strike price
(CHF)

0.55
0.043
0.13
-
0.32

2023
777,000
(12,527,235)
13,320,581
-
1,570,346

Average
strike price
(CHF)

2.01
0.13
0.49
1.00
0.55

2022

8,615,885
(17,240,133)
9,437,078
(35,830)
777,000

At December 31, 2023, of the outstanding 1,570,346 share options (2022: 777,000), 686,605 were exercisable (2022: 389,668).

The outstanding share options as at December 31, 2023 and 2022 have the following expiry dates:

At December 31, 2023
Expiry date
2025………………………………………………..
2027………………………………………………..
2028………………………………………………..
2029………………………………………………..
2030………………………………………………..
2031………………………………………………..
2032………………………………………………..
2033………………………………………………..
Total……………………………………………….

0.043 to 0.106
-
-
-
-
-
-
436,677
356,669
793,346

0.13

Range of strike prices (CHF)
0.14 to 0.99
25,000
11,385
26,085
-
-
-
108,955
-
171,425

1.00 to 3.00
4,687
7,241
5,292
110,500
44,854
73,888
-
-
246,462

-
56,655
59,530
-
10,000
40,000
192,928
-
359,113

Total

29,687
75,281
90,907
110,500
54,854
113,888
738,560
356,669
1,570,346

At December 31, 2022
Expiry date
2025………………………………………………..
2027………………………………………………..
2028…………………………………....................
2029…………………………………....................
2030…………………………………....................
2031…………………………………....................
2032…………………………………....................
Total……………………………………………….

0.13

Range of strike prices (CHF)
1.00 to 3.00
0.14 to 0.99

Total

-
56,655
59,530
-
10,000
40,000
192,928
359,113

25,000
11,385
26,085
-
-
-
108,955
171,425

4,687
7,241
5,292
110,500
44,854
73,888
-
246,462

29,687
75,281
90,907
110,500
54,854
113,888
301,883
777,000

The weighted average fair value of share options granted during 2023 determined using a Black-Scholes model was CHF 0.08 (2022:
CHF 0.18). The significant inputs to the model were:

Weighted average share price per share at the grant date……………....
Weighted average strike price per share…………………………………..
Weighted average volatility (1)…..……………………......................................
Weighted average expected option life (years)……………………………
Dividend yield………………………………………………………………...
Weighted average annual risk-free rate……………………………………

(1) The expected volatility is based on historical share prices of the company

2023
CHF 0.14
CHF 0.13
58.16%
6.25
-
0.86%

2022
CHF 0.41
CHF 0.49
50.34%
6.25
-
0.75%

Page 48 of 71

Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

Deferred Strike Price Payment Plan (DSPPP)

The Group has implemented a staff retention plan which includes a DSPPP which encourages Board Members, Executive Managers
and employees to exercise their share options or equity sharing certificates and become shareholders of the Company by allowing
the deferral of the obligation to pay the strike price until the earlier of the sale of the shares or 10 years. Shares received through the
exercise of unvested share options are subject to sales restrictions reflecting the remaining vesting period of exercised equity incentive
units. In the event of a change of control, bankruptcy of the Company or forced sale of the shares at a price below the strike price,
the deferred strike price payment obligation is waived. Under IFRS 2, the DSPPP is considered to be a non-recourse loan and
consequently the options are deemed to be exercised on the date that the loan is repaid. Therefore, neither the shares nor the loan,
are outstanding until either the options are exercised by paying the exercise price for the shares (repaying the loan) or the options
expire entirely after 10 years without any remaining obligation from the option holders. The DSPPP is considered to be a modification
of the equity incentive plan and consequently, the shares issued from the exercise of equity incentive units (“DSPPP Shares”) are
recorded as treasury shares and associated share-based compensation is recognized over the remaining vesting period as if the
equity incentive units had not been exercised. During the twelve-months period ending December 31, 2023, 12,527,235 options have
been exercised through our DSPPP. The modification of the equity incentive plan decreased the fair value by CHF 12,323. This
decrease has not been recognized according to IFRS 2. During the twelve-months period ending December 31, 2022, 17,438,883
options have been exercised through our DSPPP and the resulting modification of the equity incentive plan increased the fair value
by CHF 63,399 of which CHF 52,216 has been recognized in 2022.

Movements in the number of DSPPP shares are as follows:

At January 1……………………………………….
Forfeited…………………………………………...
Granted - exercise of ESOP & ESC……………..
At December 31………………………………….

Average
deferred
strike price
payment
(CHF)

0.13
0.13
0.043
0.09

Average
deferred
strike price
payment
(CHF)

2022

-
-

0.13
0.13

17,438,883
17,438,883

2023
17,438,883
(7,311)
12,527,235
29,958,807

On November 27, 2023 and October 26, 2022, Board Members, Executive Managers and employees exercised 12,527,235 and
17,438,883 equity incentive units, respectively, at a strike price of CHF 0.043 and CHF 0.13, respectively. At December 31, 2023, of
the 29,958,807 DSPPP shares (2022: 17,438,883 DSPPP shares), 12,573,975 (2022: 7,726,415) are not subject to sales restrictions.

The DSPPP will expire as follow:

At December 31, 2023
Expiry date
2032……………………………
2033……………………………
Total……………………………

Range of strike prices (CHF)

0.043

-
12,527,235
12,527,235

0.13
17,431,572
-
17,431,572

Total

17,431,572
12,527,235
29,958,807

15. Revenue from contract with customer

License & research agreement with Indivior PLC

On January 2, 2018, the Group entered into an agreement with Indivior for the discovery, development and commercialization of
novel GABAB PAM compounds for the treatment of addiction and other CNS diseases. This agreement included the selected clinical
candidate, ADX71441. In addition, Indivior agreed to fund a research program at the Group to discover novel GABAB PAM
compounds.

The contract contains two distinct material promises and performance obligations: (1) the selected compound ADX71441 which falls
within the definition of a licensed compound, whose rights of use and benefits thereon was transferred in January 2018 and, (2) the
research services to be conducted by the Group and funded by Indivior to discover novel GABAB PAM compounds for clinical
development that may be discovered over the research term of the agreement and selected by Indivior.

Indivior has sole responsibility, including funding liability, for development of selected compounds under the agreement through
preclinical and clinical trials, as well as registration procedures and commercialization, if any, worldwide. Indivior has the right to
design development programs for selected compounds under the agreement. Through the Group’s participation in a joint development
committee, the Group reviews, in an advisory capacity, any development programs designed by Indivior. However, Indivior has
authority over all aspects of the development of such selected compounds.

Under terms of the agreement, the Group granted Indivior an exclusive license to use relevant patents and know-how in relation to
the development and commercialization of product candidates selected by Indivior. Subject to agreed conditions, the Group and

Page 49 of 71

Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

Indivior jointly own all intellectual property rights that are jointly developed and the Group or Indivior individually own all intellectual
property rights that the Group or Indivior develop individually. The Group has retained the right to select compounds from the research
program for further development in areas outside the interest of Indivior including Charcot-Marie-Tooth type 1A neuropathy, or
CMT1A, cough and pain. Under certain conditions, but subject to certain consequences, Indivior may terminate the agreement.

In January 2018, the Group received, under the terms of the agreement, a non-refundable upfront fee of USD 5.0 million for the right
to use the clinical candidate, ADX71441, including all materials and know-how related to this clinical candidate. In addition, the Group
is eligible for payments on successful achievement of pre-specified clinical, regulatory and commercial milestones totaling USD 330
million and royalties on net sales of mid-single digits to low double-digits.

On February 14, 2019, Indivior terminated the development of their selected compound, ADX71441. Separately, Indivior funds
research at the Group, based on a research plan to be mutually agreed between the parties, to discover novel GABAB PAM
compounds. These future novel GABAB PAM compounds, if selected by Indivior, become licensed compounds. The Group agreed
with Indivior to an initial research term and duration of two years with a funding of $ 4 million over the period for the Group’s R&D
costs incurred, that can be extended by twelve-month increments. R&D costs are calculated based on the costs incurred in
accordance with the contract. Following Indivior’s selection of one newly identified compound, the Group has the right to also select
one additional newly identified compound. The Group is responsible for the funding of all development and commercialization costs
of its selected compounds and Indivior has no rights to the Group’s selected compounds. The initial two-year research term was
expected to run from May 2018 to April 2020. In 2019, Indivior agreed to an additional research funding of USD 1.6 million, for the
research period. On October 30, 2020, the research term was extended until June 30, 2021 and Indivior agreed to additional research
funding of USD 2.8 million. Effective May 1, 2021, the research term was extended until July 31, 2022 and Indivior agreed additional
research funding of CHF 3.7 million, of which CHF 2.7 million was paid to the Group and CHF 1.0 million paid directly by Indivior to
third party suppliers that are supporting the funded research program. In August 2022, the research agreement was extended until
March 31, 2023 and Indivior agreed to additional research funding of CHF 0.85 million. The reserved indications, where Addex retains
exclusive rights to develop its own independent GABAB PAM program, have also been expanded to include cough. Effective
November 1, 2022, the research term was extended until June 30, 2023 and Indivior agreed to additional research funding of CHF
0.95 million. Effective July 1, 2023, the research agreement with Indivior has been extended until June 30, 2024 and Indivior
committed additional research funding of CHF 2.7 million including CHF 1.1 million expected to be paid to the Group and CHF 1.6
million paid directly by Indivior to third party suppliers that are supporting the funded research program.

For the year ended December 31, 2023, the Group recognized CHF 1.6 million as revenue (2022: CHF 1.4 million) and recorded a
combined amount of CHF 0.1 million in contract asset and trade receivable as of December 31, 2023 (December 31, 2022: CHF 0.4
million).

Janssen Pharmaceuticals Inc. (formerly Ortho-McNeil-Janssen Pharmaceuticals Inc.)

On December 31, 2004, the Group entered into a research collaboration and license agreement with Janssen Pharmaceuticals Inc.
(JPI). In accordance with this agreement, JPI has acquired an exclusive worldwide license to develop mGlu2 PAM compounds for
the treatment of human health. The Group is eligible to receive up to EUR 109 million in success-based development and regulatory
milestone, and low double-digit royalties on net sales. The Group considers these various milestones to be variable considerations
as they are contingent upon achieving uncertain, future development stages and net sales. For this reason, the Group considers the
achievement of the various milestones as binary events that will be recognized as revenue upon occurrence.

No amounts have been recognized under this agreement in 2023 and 2022.

16. Other income

Under grant agreements with Eurostars/Innosuisse the Group is required to complete specific research activities within a defined
period of time. The Group’s funding is fixed and received based on the satisfactory completion of the agreed research activities and
incurring the related costs.

In July 2019, the Group was funded by Eurostars/Innosuisse for CHF 0.5 million to support our mGlu7 NAM program. Of the amount,
CHF 0.38 million were received in October 2019. The remaining funds of CHF 0.12 million recorded as other receivables as of
December 31, 2022, were received on February 2023.

In September 2023, the Group was funded by Eurostars/Innossuise for CHF 0.5 million to support our mGlu2 NAM program of which
CHF 0.35 million were received in December 2023. As of December 31, 2023, the Group recognized CHF 0.03 million in other income
in accordance with the grant conditions and CHF 0.32 million as deferred income, including CHF 0.23 million as short term (less than
one year) and CHF 0.09 million as long term (more than one year) in accordance with the budget for the use of the grant received.

The Group additionally recognized other income from IT consultancy agreements.

Page 50 of 71

Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

17. Operating costs

Staff costs (note 18)…………………………………......
Depreciation (notes 8/9)…..…….................................
External research and development costs…………....
Laboratory consumables…………………...…………..
Patent maintenance and registration costs.………......
Professional fees………………………………………...
Short term leases………………………………………..
D&O insurance…………………………………………..
Other operating costs……………………………...........
Total operating costs……………………………….…

2023
5,376,859
305,952
2,748,422
331,279
370,132
1,163,839
35,567
628,595
967,723
11,928,368

2022
7,053,102
323,144
10,029,786
319,305
318,194
1,424,333
47,283
1,591,231
858,788
21,965,166

The evolution of the total operating costs is mainly driven by external research and development expenses, staff costs, D&O
insurance, professional fees and other operating costs.

During the year ended December 31, 2023, total operating costs decreased by CHF 10.0 million compared to the year ended
December 31, 2022, primarily due to decreased dipraglurant related external research and development activities for CHF 7.3 million.
During the same period, staff costs decreased by CHF 1.7 million primarily due to lower share-based service costs (note 18) and
reduced D&O insurance for CHF 1.0 million.

18. Staff costs

Wages and salaries.……………………………………..
Social charges and insurances….…………...………...
Value of share-based services (note 14)………......….
Retirement benefit (note 20)….…………………..……
Total staff costs………………...…….….....................

2023
3,241,641
378,454
1,520,917
235,847
5,376,859

2022
3,341,014
397,428
3,034,740
279,920
7,053,102

Total staff costs decreased by CHF 1.7 million for the year ended December 31, 2023 compared to the year ended December 31,
2022, primarily due to lower share-based service costs in 2023 (see note 14).

19. Taxes

Loss before tax……………………………………..........
Tax calculated at a tax rate of 13.99% ………………...
Effect of different tax rates in USA and France………..
Deductible expenses charged against equity for
issuance of shares………………….
Sale of treasury shares by a subsidiary, recognized
as
financial
in
statements………………………………………………..
Expenses not deductible for tax purposes…………….
Temporary differences…………………………………..
Total tax losses not recognized as deferred tax asset..
Income tax expense…………………………….……...

standalone

financial

loss

December 31, 2023

December 31, 2022

10,556,227
1,476,816
1,658

37,374

485,867
(321,494)
(1,836)
(1,678,385)
-

20,804,213
2,910,509
3,801

98,591

1,666,594
(434,593)
(1,324)
(4,243,578)
-

The Group has decided not to recognize any deferred income tax assets at December 31, 2023 or 2022. The key factors which have
influenced management in arriving at this evaluation are the fact that the Group has not yet a history of making profits and product
development remains at an early stage.

The amount of deferred income tax assets that arises from sources other than tax losses carried forward and the amount of deferred
income tax liabilities are insignificant compared to the unrecognized tax losses carried forward.

Page 51 of 71

Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

The tax losses carried forward by the Group and their respective expiry dates are as follows:

2023……………………………………………………….
2024……………………………………………………….
2025……………………………………………………….
2026……………………………………………………….
2027……………………………………………………….
2028……………………………………………………….
2029……………………………………………………….
2030……………………………………………………….
Total unrecorded tax losses carry forwards……....

December 31, 2023
-
290,949
3,586,490
23,467,840
12,590,566
28,427,419
65,365,173
19,766,179
153,494,616

December 31, 2022
141,425,567
290,949
3,586,490
23,467,840
12,590,566
28,427,419
65,367,349
-
275,156,180

As of December 31, 2023, the unrecorded tax losses carried forward amounted to CHF 153,494,616 (2022: CHF 275,156,180).

20. Retirement benefit obligations

Apart from the social security plans fixed by the law, the Group sponsors an independent pension plan. The Group has contracted
with Swiss Life for the provision of occupational benefits. All benefits in accordance with the regulations are reinsured in their entirety
with Swiss Life within the framework of the corresponding contract. This pension solution fully reinsures the risks of disability, death
and longevity with Swiss Life. Swiss Life invests the vested pension capital and provides a 100% capital and interest guarantee. The
pension plan is entitled to an annual bonus from Swiss Life comprising the effective savings, risk and cost results. Although, as is the
case with many Swiss pension plans, the amount of ultimate pension benefit is not defined, certain legal obligations of the plan create
constructive obligations on the employer to pay further contributions to fund an eventual deficit; this results in the plan nevertheless
being accounted for as a defined benefit plan. All employees are covered by this plan, which is a defined benefit plan. Retirement
benefits are based on contributions, computed as a percentage of salary, adjusted for the age of the employee and shared
approximately 46% / 54% by employee and employer. In addition to retirement benefits, the plans provide death and long-term
disability benefits to its employees. Liabilities and assets are revised every year by an independent actuary. Assets are held in the
insurance company. In accordance with IAS 19 (revised), plan assets have been estimated at fair market values and liabilities have
been calculated according to the "projected unit credit" method. The Group recorded a pension benefit charge in 2023 of CHF 235,847
(2022: CHF 279,920) as part of staff costs.

Employment benefit obligations
The amounts recognized in the balance sheet are determined as follows:

Defined benefit obligation………..…………...………...
Fair value of plan assets…………………….…………..
Effect of asset ceiling…...….……………………………
Funded status (shortfall)/ surplus………..…………

December 31, 2023
(9,138,045)
8,694,521
-
(443,524)

December 31, 2022
(7,682,529)
7,867,835
(185,306)
-

As of December 31, 2023, the funded status has a shortfall of CHF 0.4 million compared to a surplus of CHF 0.2 million as of
December 31, 2022 not recorded as an asset in accordance with the asset ceiling rules and minimum funding requirements. The
increase of the present value of the defined benefit obligation is primarily due to the decrease of the discount rate to 1.50% as of
December 31, 2023 compared to 2.30% as of December 31, 2022.

The amounts recognized in the statement of comprehensive loss are as follows:

Current service cost……………….…………………….
Past service cost……………….………………..………
Interest cost………………………..………...…………..
Interest income…………………..……………….…......
Company pension amount (note 18)…….................

2023
(268,097)
26,899
(175,609)
180,960
(235,847)

2022
(306,491)
36,459
(98,639)
88,751
(279,920)

The conversion rates have changed in the first quarter of 2023 and in the second quarter of 2022 which has led to a positive past
service cost during the years ended December 31, 2023 and 2022.

Page 52 of 71

Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

The movements in the defined benefit obligations during the year are as follows:

Defined benefit obligation at beginning of year............
Current service cost………………………....................
Past service cost………………………………………...
Interest cost………………………………...………..…..
Employee contributions……………………….………...
Actuarial (loss)/ gain arising from changes in financial
assumptions.……………………………………………..
Actuarial gain arising from changes in demographic
assumptions……………………………………………...
Actuarial gain on experience adjustment………
Benefits (paid)/ deposited…………...………………….
Defined benefit obligations at end of year………....

2023
(7,682,529)
(268,097)
26,899
(171,347)
(250,290)

2022
(9,276,675)
(306,491)
36,459
(98,639)
(244,097)

(671,909)

1,923,273

-
22,250
(143,022)
(9,138,045)

The movements in the fair value of plan assets during the year are as follows:

Fair value of plan assets at beginning of year…….......
Interest income………………………………………......
Employee contributions……..…………………..….......
Employer contributions………..………………………...
Plan assets loss……………………...…………..……...
Benefits paid……………...…………….……..………....
Fair value of plan assets at end of year……………..

2023
7,867,835
180,960
250,290
298,490
(46,076)
143,022
8,694,521

51,085
6,850
225,706
(7,682,529)

2022
7,995,150
88,751
244,097
291,313
(525,770)
(225,706)
7,867,835

As of the date of the preparation of these consolidated financial statements, the 2023 annual report of the pension fund has not yet
been issued, and therefore the detailed structures and assets held at December 31, 2023, are not currently available for presentation.
However, the detailed assets held at December 31, 2022, which were reported to the Group on May 9, 2023 by its plan administrator,
are as follows:

Cash………………………………………………………
Bonds…………………………………………................
Equity instruments……………………………………….
Real estate……………………………………................
Mortgages…………………………………….................
Derivatives……………………………………………….
Total………………………………………………………

The principal actuarial assumptions used were as follows:

December 31, 2022
0.6%
49.74%
11.45%
23.72%
10.47%
4.02%
100.00%

Discount rate………………………...……………..........
Mortality tables………………..………………………….
Salary growth rate……………………………………….
Pension growth rate….………………………………….

December 31, 2023
1.50%
BVG2020 GT
1.20%
0.00%

December 31, 2022
2.30%
BVG2020 GT
1.20%
0.00%

The following sensitivity analysis shows the impact of increasing or decreasing certain assumptions on the defined benefit obligation
of the Swiss pension plan:
-

0.25% increase or decrease in the discount rate would lead to a decrease of 3.23% (2022: 3.09%) or an increase of 3.66% (2022:
3.48%) in the defined benefit obligation.
0.25% increase or decrease in the interest rate on retirement savings capital would lead to an increase of 0.76% (2022: 1.06%)
or a decrease of 0.74% (2022: 1.03%) in the defined benefit obligation.
0.25% increase or decrease in salaries would lead to an increase of 0.08% (2022: 0.09%) or a decrease of 0.07% (2022: 0.09%)
in the defined benefit obligation; and
+/-1 year in the life expectancy would lead to an increase of 1.23% (2022: 1.02%) or a decrease of 1.28% (2022: 1.07%) in the
defined benefit obligation.

Page 53 of 71

Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

The discount rate and life expectancy were identified as significant actuarial assumptions for the Swiss pension plan.

The above sensitivity analyses are based on a change in an assumption while holding all other assumptions constant. In practice,
this is unlikely to occur, and changes in some of the assumptions may be correlated. When calculating the sensitivity of the defined
benefit obligations to significant actuarial assumptions the same method (present value of the defined benefit obligation calculated
with the projected unit credit method at the end of the reporting period) has been applied as that used in calculating the pension
liability recorded on consolidated balance sheets.

The methods and types of assumptions used in preparing the sensitivity analysis did not change compared to the prior period.

The estimated employer contributions to pension plans for the financial year 2024 amount to CHF 297,000. The following table shows
the funding of the defined benefit pensions and the components of the costs recognized in other comprehensive income:

Present value of defined benefit obligation………........
Fair value of plan assets………………………………...
Effect of asset ceiling…..…………………….………….
(Deficit) / Surplus in the plan………………..……….

Actuarial (loss)/ gain on defined benefit obligation……
Actuarial loss on plan assets…………….……………..
Change in the effect of the asset ceiling ………………
Total ……………...………………………………………

2023
(9,138,045)
8,694,521
-
(443,524)

(649,659)
(46,076)
189,568
(506,167)

2022
(7,682,529)
7,867,835
(185,306)
-

1,981,208
(525,770)
(185,306)
1,270,132

The following table shows the estimated benefit payments for the next ten years where the number of employees remains constant:

2024….........….........….........…...................................
2025….........….........….........…...................................
2026….........….........….........…...................................
2027….........….........….........…...................................
2028….........….........….........…...................................
2029-2033................….........…...................................

21. Finance result, net

Interest income ………………………………………….
Interest expense on leases…………………………......
Interest cost……………………………..………............
Foreign exchange losses net……………..….…..…….
Finance result, net..………...………………………….

790,000
523,000
372,000
371,000
538,000
2,697,000

2023
63,964
(19,963)
(1,644)
(317,285)
(274,928)

2022
29,251
(23,019)
(25,878)
(264,360)
(284,006)

The evolution of the finance result is mainly driven by foreign exchange losses on our U.S Dollar cash deposits due to the evolution
of the exchange rate of U.S Dollar compared to the Swiss franc. Finance result was a net loss of CHF 0.3 million for the year ended
December 31, 2023 and December 31, 2022.

22. Loss per share

Basic and diluted loss per share is calculated by dividing the loss attributable to equity holders of the Company by the weighted
average number of shares in issue during the year excluding treasury shares.

Loss attributable to equity holders of the Company…..
Weighted average number of shares in issue…………
Basic and diluted loss per share…………………….

2023
(10,556,227)
74,307,635
(0.14)

2022
(20,804,213)
45,184,865
(0.46)

The Company has three categories of dilutive potential shares: treasury shares, share options and warrants which have been ignored
in the calculation of the loss per share for the year ended December 31, 2023 and 2022, as they would be antidilutive.

Page 54 of 71

Addex Therapeutics Annual Report 2023 │ Consolidated Financial Statements Notes

In addition to treasury shares, the total number of dilutive instruments as of December 31, 2023 is 63,246,964 (2022: 30,874,670)
which consists of 1,570,346 share options, 5,866,898 warrants granted to investors on March 28, 2018 and 55,809,720 warrants
granted to one investor (9,230,772 warrants on December 21, 2021, 15,000,000 on July 26, 2022 and 31,578,948 on April 3, 2023,
respectively). As of December 31, 2022, dilutive instruments primarily consist of 777,000 share options, 5,866,898 warrants granted
to investors on March 28, 2018 and 24,230,772 warrants granted to one investor (9,230,772 warrants on December 21, 2021 and
15,000,000 on July 26, 2022, respectively). These options could potentially dilute basic earnings per share in the future.

23. Commitments and contingencies

Capital commitments
As at December 31, 2023 and 2022, the Group has no contracted capital expenditure.
Contingencies
As part of the ordinary course of business, the Group is subject to contingent liabilities in respect of certain litigation. Currently, there
is no outstanding litigation with a possible negative effect on the Group.

24. Related party transactions

Related parties include members of the Board of Directors and the Executive Management of the Group. The following transactions
were carried out with related parties:

Key management compensation

Salaries, other short-term employee benefits and
post-employment benefits………………………………
Consulting fees…………………………………………..
Share-based compensation….………………………...
Total………………………………………………………

2023

1,644,065
17,106
1,536,897
3,198,068

2022

1,619,186
151,639
3,196,353
4,967,178

Salaries, other short-term employee benefits and post-employment benefits relate to members of the Board of Directors and Executive
Management who are employed by the Group. Consulting fees relate mainly to Roger Mills, a member of the Executive Management
who delivers his services to the Group under a consulting contract. The Group has a net payable to the Board of Directors and
Executive Management of CHF 0.1 million as of December 31, 2023 and December 31, 2022. Share-based compensation relates to
the fair value of equity incentive units recognized through profit and loss following their vesting plan.

25. Events after the balance sheet date

On January 8, 2024, 6,439,124 equity incentive units giving the right to purchase 6,439,124 shares listed on SIX, have been granted
to Board members, Executive Managers and employees with an exercise price of CHF 0.05 and the related share-based
compensation amount of CHF 0.2 million will be recognized over the remaining vesting period of the equity incentive units.

On April 2, 2024, the Group divested its allosteric modulator drug discovery technology platform and a portfolio of preclinical programs
to a newly formed Swiss company, Neurosterix Pharma Sàrl (Neurosterix). Neurosterix has received committed funding of USD 63
million from a syndicate of investors led by Perceptive Advisors (Perceptive Xontogeny Venture Fund II L.P, Perceptive Life Sciences
Master Fund Ltd and Acorn Bioventures 2, L.P) (the “Neurosterix Transaction” or “Transaction”). As part of the Transaction, Addex
received CHF 5.0 million in cash and an equity interest representing 20% of Neurosterix. Addex retained its partnerships with Janssen
Pharmaceuticals, Inc. and Indivior PLC, as well as unpartnered clinical stage assets including dipraglurant for Parkinson’s disease
and post-stroke/TBI recovery and its preclinical GABAB PAM program for chronic cough. The Transaction includes the transfer of the
associated R&D staff and infrastructure. As part of the Transaction, Addex and Neurosterix entered into a service agreement which
provides Addex with access to certain staff and infrastructure to ensure the operation of the Addex retained business. At the effective
date of the Transaction of March 1, 2024, Addex transferred to Neurosterix certain assets and liabilities identified as held for sale as
of February 29, 2024 amounting to CHF 0.6 million and CHF 0.5 million, respectively. These assets and liabilities mainly related to
the Eurostars/Innosuisse grant funding to support the mGlu2NAM program recorded as deferred income for CHF 0.3 million as of
February 29, 2024.

Page 55 of 71

Addex Therapeutics Annual Report 2023 │Consolidated Financial Statements

Phone +41 22 322 24 24
www.bdo.ch
geneve@bdo.ch

BDO Ltd
Rte de Meyrin 123
P.O. Box 150
1215 Geneva 15

STATUTORY AUDITOR'S REPORT

To the general meeting of Addex Therapeutics Ltd, Plan-les-Ouates

Report on the Audit of the Consolidated Financial Statements

Opinion

We have audited the consolidated financial statements of Addex Therapeutics Ltd and its subsidiaries
(the Group), which comprise the consolidated balance sheet as at 31 December 2023, and the
consolidated statement of comprehensive income, consolidated statement of changes in equity and
consolidated statement of cash flows for the year then ended, and notes to the consolidated financial
statements, including material accounting policy information.

In our opinion the accompanying consolidated financial statements (pages 28 to 55) give a true and
fair view of the consolidated financial position of the Group as at 31 December 2023 and its
consolidated financial performance and its consolidated cash flows for the year then ended in
accordance with IFRS Accounting Standards and comply with Swiss law.

Basis for Opinion

We conducted our audit in accordance with Swiss law, International Standards on Auditing (ISAs) and
Swiss Standards on Auditing (SA-CH). Our responsibilities under those provisions and standards are
further described in the "Auditor’s Responsibilities for the Audit of the Consolidated Financial
Statements" section of our report. We are independent of the Group in accordance with the provisions
of Swiss law, together with the requirements of the Swiss audit profession, as well as those of the
International Code of Ethics for Professional Accountants (including International Independence
Standards) of the International Ethics Standards Board for Accountants (IESBA Code), and we have
fulfilled our other ethical responsibilities in accordance with these requirements.

We believe that the audit evidence we have obtained is sufficient and appropriate to provide a basis
for our opinion.

Key Audit Matters

Key audit matters are those matters that, in our professional judgment, were of most significance in
our audit of the consolidated financial statements of the current period. These matters were
addressed in the context of our audit of the consolidated financial statements as a whole, and in
forming our opinion thereon, and we do not provide a separate opinion on these matters.

Page 56 of 71

Addex Therapeutics Annual Report 2023 │Consolidated Financial Statements

Key Audit Matter

How the Key Audit Matter was addressed in the
audit

Accounting and valuation of new derivative
instruments classified as equity instruments

On 3 April 2023, the Group entered into a securities
purchase agreement with an institutional investor.
The Group sold 7,999,998 treasury shares in the
form of American depositary shares (ADSs) and
23,578,950 pre-funded warrant shares in the form
of ADSs.

In addition, the Group granted the institutional
investor 31,578,948 warrant shares exercisable in
the form of ADSs.

The total gross proceeds from the offering
amounted to USD 5.0 million (CHF 4.5 million). The
fair value of the warrant shares amounts to CHF
1.78 million and has been recorded in equity.

This is a significant focus point due to the
complexity, judgement and estimates involved in
determining the proper accounting and fair value
of the equity instruments issued during the year in
accordance with
IAS 32.16 and IFRS 13.34,
respectively.

Refer to note 13 - Share capital.

Other Information

We obtained an understanding of the process and
through discussion with members of
controls
management and observation of documents.

We analyzed the terms and conditions of the securities
identified embedded
purchase agreements and
features and other contractual terms affecting the
accounting of the warrants.

We evaluated the Group's accounting policies and
procedures for recognizing the related warrants.

We assessed management’s judgments and estimates
and evaluated the Group’s models to determine the
fair value of the warrants issued by using the
assistance of professionals with specialized knowledge
and expertise to assist reviewing the appropriateness
of management's accounting assessment and the
methodology and model used to establish fair values of
the warrants.

We assessed the related disclosures for accuracy.

The Board of Directors is responsible for the other information. The other information comprises the
information included in the annual report, but does not include the consolidated financial statements,
the financial statements, the compensation report and our auditor’s reports thereon.

Our opinion on the consolidated financial statements does not cover the other information and we do
not express any form of assurance conclusion thereon.

In connection with our audit of the consolidated financial statements, our responsibility is to read the
other information and, in doing so, consider whether the other information is materially inconsistent
with the consolidated financial statements, or our knowledge obtained in the audit or otherwise
appears to be materially misstated. If, based on the work we have performed, we conclude that there
is a material misstatement of this other information,we are required to report that fact. We have
nothing to report in this regard.

Responsibilities of the Board of Directors for the Consolidated Financial Statements

The Board of Directors is responsible for the preparation of the consolidated financial statements,
which give a true and fair view in accordance with IFRS Accounting Standards and the provisions of
Swiss law, and for such internal control as the Board of Directors determines is necessary to enable
the preparation of consolidated financial statements that are free from material misstatement,
whether due to fraud or error.

In preparing the consolidated financial statements, the Board of Directors is responsible for assessing
the Group’s ability to continue as a going concern, disclosing, as applicable, matters related to going
concern and using the going concern basis of accounting unless the Board of Directors either intends
to liquidate the Group or to cease operations, or has no realistic alternative but to do so.

Page 57 of 71

Addex Therapeutics Annual Report 2023 │Consolidated Financial Statements

Auditor’s Responsibilities for the Audit of the Consolidated Financial Statements

Our objectives are to obtain reasonable assurance about whether the consolidated financial
statements as a whole are free from material misstatement, whether due to fraud or error, and to
issue an auditor’s report that includes our opinion. Reasonable assurance is a high level of assurance,
but is not a guarantee that an audit conducted in accordance with Swiss law, ISAs and SA-CH will
always detect a material misstatement when it exists. Misstatements can arise from fraud or error
and are considered material if, individually or in the aggregate, they could reasonably be expected
to influence the economic decisions of users taken on the basis of these consolidated financial
statements.

A further description of the auditor’s responsibilities for the audit of the consolidated financial
statements is located at EXPERTsuisse's website at: https://www.expertsuisse.ch/en/audit-report-
for-ordinary-audits. This description forms part of our auditor’s report.

Report on Other Legal and Regulatory Requirements

In accordance with Art. 728a para. 1 item 3 CO and PS-CH 890, we confirm that an internal control
system exists, which has been designed for the preparation of consolidated financial statements
according to the instructions of the Board of Directors.

We recommend that the consolidated financial statements submitted to you be approved.

Geneva, 18 April 2024

BDO Ltd

Christoph Tschumi

Licensed Audit Expert
Auditor in Charge

Nigel Le Masurier

Licensed Audit Expert

Page 58 of 71

Addex Therapeutics Annual Report 2023 │Statutory Financial Statements

Statutory Financial Statements of Addex
Therapeutics Ltd as at December 31, 2023

Page 59 of 71

Addex Therapeutics Annual Report 2023 │Statutory Financial Statements

Balance Sheets
as at December 31, 2023 and December 31, 2022

Notes

December 31,

December 31,
2023
2022
Amounts in Swiss francs

ASSETS
Current assets
Cash and cash equivalents………………………………..
Accrued income and prepayments……………………….
Total current assets………………………………………

Non-current assets
Investments in Subsidiaries……………...……...………...
Other non-current assets

Subordinated Loans to Subsidiaries………………..
Total non-current assets…………………….…………..

403,798
-
403,798

255,514
36,043
291,557

5,041,314
5,041,317

10,514,116
10,514,119

Total assets………………………………………..……....

5,445,115

10,805,676

LIABILITIES AND EQUITY
Current liabilities
Trade payables…...…………………………………..…....
Other payables - third parties…………….……................
Accruals……….………………………………….…………
Total current liabilities……………………………..…….

Equity
Share capital……………………………………..…………
Statutory capital reserve ………………………………….
Reserve from capital contribution. ………………………
Treasury shares reserve…………………………………...
Non-voting equity securities (*)……………..……………..
Accumulated deficit………………………………………...
Total equity………………….……………………………..

10
10
10
11

199,931
53,573
197,595
451,099

1,843,545
38,328,946
64,620,223
609,979
p.m
(100,408,677)
4,994,016

145,754
46,475
153,001
345,230

1,153,483
29,238,702
64,620,223
6,104,374
p.m
(90,656,336)
10,460,446

Total liabilities and equity………...….………………….

5,445,115

10,805,676

(*) p.m. = pro memoria. Non-voting equity securities have no nominal value.

The accompanying notes form an integral part of these financial statements.

Page 60 of 71

Addex Therapeutics Annual Report 2023 │Statutory Financial Statements

Statements of Loss
for the years ended December 31, 2023 and 2022

Notes

December 31,

December 31,
2023
2022
Amounts in Swiss francs

Operating costs

Professional fees…………………………………...….......
Capital increase & offering costs………………………….
Other operating costs………………………………………
Provision for loans to subsidiaries……...…………..........
Taxes………………………………………………………...

12
12
12
9

(492,922)
(257,322)
(1,085,628)
(7,769,106)
(7,150)

(553,152)
(704,726)
(1,878,923)
(35,043,177)
1,471

Total operating costs……………………………………..

(9,612,128)

(38,178,507)

Finance income……………………………………………..
Finance expenses…………………………………...……..
Finance result……………………………………………...

-
(140,213)
(140,213)

5,619,934
(10,329)
5,609,605

Net loss before taxes……………………………………..

(9,752,341)

(32,568,902)

Income tax expense…………………..……...…………….

Net loss for the year……………………………………....

(9,752,341)

(32,568,902)

The accompanying notes form an integral part of these financial statements.

Page 61 of 71

Addex Therapeutics Annual Report 2023 │Statutory Financial Statements Notes

Notes to the Financial Statements for the years
ended December 31, 2023 and 2022
(amounts in Swiss francs)

1. General

Addex Therapeutics Ltd, formerly Addex Pharmaceuticals Ltd, was founded on February 19, 2007 and domiciled C/O Addex Pharma
SA, Chemin des Aulx 12, CH1228 Plan-les-Ouates, Geneva, Switzerland.

2. Accounting Policies

These financial statements have been prepared in accordance with the provisions of commercial accounting as set out in the Swiss
follows:
Code of Obligations

to 963b CO). Significant balance sheet

items are accounted

(Art. 957

for as

Cash and cash equivalents

Cash and cash equivalents include cash on hand. Any bank overdrafts are not netted against cash and cash equivalents but are
shown as part of current liabilities on the balance sheet.

Loans and other receivables

Loans and other short-term receivables are carried at their nominal value. Impairment charges are calculated for these assets on an
individual basis, and no general allowance is recorded.

Foreign currencies

Foreign currency transactions are accounted for at the exchange rates prevailing at the date of the transactions. Gains and losses
resulting from the settlement of such transactions and from the remeasurement of current assets and current liabilities denominated
in foreign currencies are recognized in financial income and financial expense. Net unrealized gains on non-current assets and
liabilities are deferred in non-current liabilities, and net unrealized losses are recognized in financial expense.

3. Guarantees, other indemnities and assets pledged in favor of third parties

As of December 31, 2023 and December 31, 2022, there were no guarantees, other indemnities or assets pledged in favor of third
parties.

4. Pledges on assets to secure own liabilities

As of December 31, 2023 and December 31, 2022, there were no assets pledged to secure own liabilities.

5. Lease commitments not recorded in the balance sheet

As of December 31, 2023 and December 31, 2022, there were no lease commitments not recorded in the balance sheet.

6. Amounts due to pension funds

As of December 31, 2023 and December 31, 2022, there were no amounts due to pension funds.

7. Full-time positions

The company as the holding of the Group, did not employ any full-time equivalent employees (“FTEs”) during the years ending
December 31, 2023 and December 31, 2022

8. Significant investments

Addex Therapeutics Ltd as a holding company for the Addex Therapeutics Group owns:

Company
Addex Pharma SA,
Plan-les-Ouates, Switzerland
Addex Pharmaceuticals France SAS,
Archamps, France
Addex Pharmaceuticals Inc.,
Delaware, USA

Business

Capital

Interest in capital &
votes %

Research & development

CHF 3,987,492

Research & development

EUR 37,000

Research & development

USD 1

100%

Page 62 of 71

Addex Therapeutics Annual Report 2023 │Statutory Financial Statements Notes

As at December 31, 2023 and 2022, the Company has provided for its investments in Group companies as follows:

Investment in Addex Pharma SA……………………….
Provision for investment in Addex Pharma SA………..
Investment in Addex Pharmaceuticals France SAS….
Investment in Addex Pharmaceuticals Inc………..…...

December 31, 2023
3,987,492
(3,987,491)
1
1
3

December 31, 2022
3,987,492
(3,987,491)
1
1
3

9. Other non-current assets – loans to Group companies

As at December 31, 2023 and 2022, the Company has provided for its loan to Addex Pharma SA as follows:

Subordinated loan to Addex Pharma SA………………
Provision for loan to Addex Pharma SA………………..

December 31, 2023
238,692,443
(233,651,129)
5,041,314

December 31, 2022
236,396,139
(225,882,023)
10,514,116

The loan to Addex Pharma SA is subordinated to the claims of other creditors of the subsidiary up to CHF 238,692,443.

10. Equity

January 1, 2022....
Issue of shares -
capital increase…..
Issue of treasury
shares……………..
Sale of pre-funded
warrants…………...
Exercise of pre-
funded warrants….
Reduction of the
nominal value…….
Transfer to
treasury shares
reserve…………....
Net loss of the
year………………..
December 31,
2022……………….
Issue of shares -
capital increase….
Issue of treasury
shares……………..
Sale of pre-funded
warrants…………...
Exercise of pre-
funded warrants….
Transfer to
treasury shares
reserve…………....
Net loss of the
year………………..
December 31,
2023……………….

Statutory capital reserves,
from…

Share capital

…capital
contribution

…retained
earnings

Reserves
from capital
contribution

Pre-funded
warrants
reserve

Treasury
shares reserve

Accumulated
deficit

Total

49,272,952

185,255,230

(163,708,099)

174,389

2,092,666

16,326,365

(64,620,223)

5,598,905

64,620,223

1,153,483

192,946,801

(163,708,099)

64,620,223

125,272

413,399

329,000

235,790

3,182,450

5,494,395

1,843,545

202,037,045

(163,708,099)

64,620,223

5,470,141

11,703,279

(58,087,434)

29,906,069

2,841,270

(8,311,411)

3,382,259

(3,382,259)

(5,598,905)

2,267,055

16,326,365

2,841,270

(8,311,411)

(32,568,902)

6,104,374

(90,656,336)

10,460,446

(5,494,395)

538,671

329,000

3,382,259

35,981

(9,752,341)

609,979

(100,408,677)

4,994,016

On December 13, 2023, Addex Therapeutics Ltd increased its capital from CHF 1,329,483 to CHF 1,782,345 by the issuance of
45,286,185 new registered shares at a nominal value of CHF 0.01 per share. Of these shares, 29,986,185 has been issued out of
our conditional capital including 17,458,950 shares issued following the exercise of pre-funded warrants granted in the offering
executed in April 2023 and 12,527,235 shares issued through the exercise of equity incentive units at a strike price of CHF 0.043 by
Board Members, Executive Managers and employees on November 27, 2023. The remaining 15,300,000 shares have been issued
from the capital band of addex Therapeutics and fully subscribed by its 100% owned subsidiary Addex Pharma SA at the nominal
value of CHF 0.01.

On June 14, 2023, Addex Therapeutics Ltd increased its capital from CHF 1,153,483 to CHF 1,329,483 through the issuance of
17,600,000 new registered shares from the capital band to its 100% owned subsidiary, Addex Pharma SA, at CHF 0.01.

Page 63 of 71

Addex Therapeutics Annual Report 2023 │Statutory Financial Statements Notes

On April 3, 2023, Addex therapeutics Ltd sold 23,578,950 pre-funded warrants in the form of ADSs at a sale price CHF 0.14 per share
(USD 18.80 per ADS). All pre-funded warrants have been exercised as of December 31, 2023. As a consequence, 23,578,950 new
shares have been issued from conditional capital of which 6,120,000 have been registered in the commercial register on February
20, 2024 in accordance with Swiss law.

On December 15, 2022, Addex Therapeutics Ltd increased its capital from CHF 979,094 to CHF 1,153,483 through the issuance of
17,438,883 new registered shares at a nominal value of CHF 0.01 per share from its conditional capital following the exercise of
17,438,883 equity incentive units at a strike price of CHF 0.13 on October 26, 2022.

On October 31, 2022, Addex Therapeutics Ltd increased its capital from CHF 652,730 to CHF 979,094 through the issuance of
32,636,476 new registered shares from its authorized capital to its fully owned subsidiary, Addex Pharma SA, at CHF 0.01 per share.
These shares are held as treasury shares.

On July 22, 2022, Addex therapeutics Ltd sold 10,500,000 pre-funded warrants in the form of 1,750,000 ADSs at a sale price of
CHF 0.27 per share, USD 33.80 per ADS with a strike price of USD 0.01 per ADS. All pre-funded warrants have been exercised as
of December 31, 2022.

On February 2, 2022, Addex Therapeutics Ltd issued 16,000,000 new shares from the authorized capital to its 100% owned
subsidiary, Addex Pharma SA, at CHF 1.00. These shares are held as treasury shares.

At December 31, 2023 the total outstanding share capital is CHF 1,843,545 consisting of 184,354,496 shares with a nominal value
of CHF 0.01. At December 31, 2022 the total outstanding share capital is CHF 1,153,483 consisting of 115,348,311 shares with a
nominal value of CHF 0.01.

The capital band and conditional capital as at December 31, 2023 and 2022 amounted as described below:

Conditional capital……………………………………….
Capital band……………………………………………...
Authorized capital(1)……………………………………..

December 31, 2023
829,972
891,173
N/A

December 31, 2022
151,976
N/A
-

(1) Under the new Swiss corporate law, which became effective on January 1, 2023, the instrument of the authorized share capital has been replaced with that of the

capital band

11. Treasury share reserve

This reserve relates to the purchase price of shares in Addex Therapeutics Ltd held by Group companies according to SIX Swiss
Exchange rules. The table shows movements in the number of shares and the treasury share reserve:

Balance at January 1, 2022……………...
Net purchases………………..…………….
Balance at December 31, 2022………….
Net purchases………………..…………….
Balance at December 31, 2023………….

12. Operating costs

Number of registered
shares
11,374,803
26,839,488
38,214,291
20,944,812
59,159,103

% of issued
share capital
23.09%

33.13%

32.09%

Treasury shares
reserves
11,703,279
(5,598,905)
6,104,374
(5,494,395)
609,979

Operating costs excluding provisions for loans to subsidiaries amounted to CHF 1.8 million for the year ended December 31, 2023
compared to CHF 3.1 million for the same period in 2022. The decrease of CHF 1.3 million is primarily due to decreased D&O
insurance costs for CHF 1 million and to a lesser extent to decreased costs related to capital increases and offerings.

13. Finance result

Sale of treasury shares (loss) / gain, net……………..
Interest expenses……..………………..………............
Foreign exchange (losses)/gains, net……….…..…….
Finance result, net..………...………………………….

2023
(101,504)
-
(38,709)
(140,213)

2022
5,557,102
(10,329)
62,832
5,609,605

Page 64 of 71

Addex Therapeutics Annual Report 2023 │Statutory Financial Statements Notes

Finance result, net primarily relates to the resale of Addex Therapeutics Ltd shares bought by Addex Pharma SA.
The net loss from the sale of treasury shares bought to Addex Pharma SA amounts to CHF 0.1 million for the year ended December
31, 2023 and mainly relates to an offering executed with one institutional investor (net gain of CHF 5.6 million for the year ended
December 31, 2022 of which CHF 5.5 million relates to offerings executed with one institutional investor).

14. Significant shareholders

According to the information available, based on published notifications to the SIX and Nasdaq stock market, the following
shareholders own 3% or more of the company’s share capital as of December 31, 2023 and 2022:

Addex Pharma SA3
Lock-up Group4
Growth Equity Opportunities Fund IV, LLC5
Tim Dyer

Number of
shares
59,159,103
17,417,140
5,648,690
7,340,097

December 31, 20231
Interest in capital
in %2
33.19%
9.77%
3.17%
4.12%

Number of
shares
38,214,291
9,941,187
5,648,690
4,505,157

December 31, 20221
Interest in capital
in %
33.13%
8.62%
4.90%
3.91%

1 This table presents the number of shares held by the shareholders listed therein. The derivative holdings held by such shareholders are not included.
2 Based on the share capital registered in the commercial register as of December 31, 2023 (i.e. CHF 1,782,344.96 divided into 178,234,496 registered shares excluding 6,120,000
shares issued out of conditional capital from December 12, 2023 to December 31, 2023 and registered in the commercial register on February 20, 2024 in accordance with Swiss
corporate law).
3 The beneficial owner is Addex Therapeutics Ltd, Chemin des Aulx 12, CH-1228 Plan-les-Ouates, Switzerland. The number of treasury shares held by the Group indicated above differs
from the information published in the latest SIX notification published as of end of December 31, and is based on the information from our share register as of December 31, 2023, and
2022.
4 Lock-up group established by a lock-up agreement among the following beneficial owners following the exercise of options granted to Board Members, Executive Managers and
employees: as of December 31, 2023, Tim Dyer, who owns 5.34% of the voting rights and 24 other shareholders, who individually hold less than 3% of the voting rights (respectively
4.51% and 25 other shareholders as of December 31, 2022). The lock-up agreement will terminate on May 11, 2027 ( terminated on October 4, 2026 as of December 31, 2022).
5 The beneficial owner is New Enterprise Associates Timonium MD 21093, USA.

15. Board of Directors and Executive Management shareholdings and equity incentive units

As of December 31, 2023 and 2022, members of the Board of Directors and Executive Management held the following shares in the
Company:

2023
Number of Shares
16,848,979
3,005,836
2,541,197
2,507,987
1,365,532
785,976
306,765
219,561
219,561
27,801,394

2022
Number of Shares
9,840,946
1,755,612
1,484,231
1,464,834
797,563
735,976
179,171
128,238
128,238
16,514,809

As of December 31, 2023 and December 31, 2022, members of the Board of Directors and Executive Management do not hold any
equity incentive units.

16. Uncertainties and ability to continue operations

The Company believes that it will be able to meet all its obligation for a further 12 months from the issuance date of the financial
statements, hence, the statutory financial statements have been prepared on a going concern basis. The future viability of the
company is dependent on the financial health of the Group. At the issuance of the statutory financial statements, the Group expects
that its existing cash and cash equivalents will be sufficient to fund its operations and meet all of its obligations as they fall due,
through 2026. The future viability of the Group will depend in its ability to raise additional capital through public or private financings
or collaboration agreements to finance its future operations, which may be delayed due to reasons outside of the Group’s control
including heath pandemics and geopolitical risks. The sale of additional equity may dilute existing shareholders. The inability to obtain
funding, as and when needed, would have a negative impact on the Group’s financial condition and ability to pursue its business
strategies. If the Group is unable to obtain the required funding to run its operations and to develop and commercialize its product
candidates, the Group could be forced to delay, reduce or stop some or all of its research and development programs to ensure it
remains solvent. Management continues to explore options to obtain additional funding, including through collaborations with third
parties related to the future potential development and/or commercialization of its product candidates. However, there is no assurance
that the Group will be successful in raising funds, closing collaboration agreements, obtaining sufficient funding on terms acceptable

Page 65 of 71

Addex Therapeutics Annual Report 2023 │Statutory Financial Statements Notes

to the Group, or if at all, which could have a material adverse effect on the Group’s business, results of operations and financial
condition.

17. Events after the balance sheet date

Addex Therapeutics sold 3,050,665 treasury shares for a gross amount of CHF 0.2 million under the sale agency agreement with
Kepler Cheuvreux, between the closing date and the approval of these consolidated financial statements.

On April 2, 2024, the Group divested its allosteric modulator drug discovery technology platform and a portfolio of preclinical programs,
previously held by Addex Pharma SA, to a newly formed Swiss company, Neurosterix Pharma Sàrl (Neurosterix). Neurosterix has
received committed funding of USD 63 million from a syndicate of investors led by Perceptive Advisors (Perceptive Xontogeny Venture
Fund II L.P, Perceptive Life Sciences Master Fund Ltd and Acorn Bioventures 2, L.P) (the “Transaction”). As part of the Transaction,
Addex Therapeutics received CHF 5.0 million in cash and an equity interest representing 20% of Neurosterix. The Group retained its
partnerships with Janssen Pharmaceuticals, Inc. and Indivior PLC, as well as unpartnered clinical stage assets including dipraglurant
for Parkinson’s disease and post-stroke/TBI recovery and its preclinical GABAB PAM program for chronic cough. The Transaction
includes the transfer of the associated R&D staff and infrastructure. As part of the Transaction, the Group and Neurosterix entered
into a service agreement which provides the Group with access to certain staff and infrastructure to ensure the operation of the
Group’s retained business. At the effective date of the Transaction of March 1, 2024, the Group transferred to Neurosterix certain
assets and liabilities identified as held for sale as of February 29, 2024 amounting to CHF 0.6 million and CHF 0.5 million, respectively.
These assets and liabilities mainly related to the Eurostars/Innosuisse grant funding to support the mGlu2NAM program recorded as
deferred income for CHF 0.3 million as of February 29, 2024.

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Addex Therapeutics Annual Report 2023 │Statutory Financial Statements │Appropriation of results

Proposed carry forward of accumulated losses

Swiss Francs

Accumulated losses as at 01.01.2023

Loss for the year 2023

Accumulated losses as at 31.12.2023

31/12/2023

90,256,336

9,752,341

100,408,677

The Board of Directors proposes to the next Annual General Meeting that the accumulated losses of CHF 9,752,341 to be carried
forward, without being compensated with the statutory reserves of CHF 38,328,946 or the reserves from capital contribution of
CHF 64,620,223.

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Addex Therapeutics Annual Report 2023 │Statutory Financial Statements

Phone +41 22 322 24 24
www.bdo.ch
geneve@bdo.ch

BDO Ltd
Rte de Meyrin 123
P.O. Box 150
1215 Geneva 15

STATUTORY AUDITOR'S REPORT

To the general meeting of Addex Therapeutics Ltd, Plan-les-Ouates

Report on the Audit of the Financial Statements

Opinion

We have audited the financial statements of Addex Therapeutics Ltd (the Company), which comprise
the balance sheet as at 31 December 2023, and the statement of loss for the year then ended, and
notes to the financial statements, including a summary of significant accounting policies.

In our opinion the accompanying financial statements (pages 60 to 66) comply with Swiss law and
the Company's articles of incorporation.

Basis for Opinion

We conducted our audit in accordance with Swiss law and Swiss Standards on Auditing (SA-CH). Our
responsibilities under those provisions and standards are further described in the "Auditor’s
Responsibilities for the Audit of the Financial Statements" section of our report. We are independent
of the Company in accordance with the provisions of Swiss law and the requirements of the Swiss
audit profession, and we have fulfilled our other ethical responsibilities in accordance with these
requirements.

We believe that the audit evidence we have obtained is sufficient and appropriate to provide a basis
for our opinion.

Key Audit Matters

Key audit matters are those matters that, in our professional judgment, were of most significance in
our audit of the financial statements of the current period. These matters were addressed in the
context of our audit of the financial statements as a whole, and in forming our opinion thereon, and
we do not provide a separate opinion on these matters.

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Addex Therapeutics Annual Report 2023 │Statutory Financial Statements

Key Audit Matter

How the Key Audit Matter was addressed in the
audit

Valuation of the loans to subsidiary

The Company has granted loans to its subsidiary
Addex Pharma SA for a total gross value of
CHF 238'692'443 and has recorded a corresponding
provision of CHF 233'651'129.

the

This is a significant focus point due to the
by
significance
Addex Therapeutics Ltd to its subsidiary and the
need of management estimates for the assessment
of the carrying value of these loans in the financial
statements which implies a high level of judgment.

provided

loans

We obtained an understanding of management’s
overall process for valuing loans to subsidiaries,
including the related internal controls to address the
risk of non-recoverability of such loans and the
recording of timely provisions, where applicable.

We evaluated management’s assessment of the
recoverability of the loans and resulting provisions,
which is based on the net asset value of its subsidiary.

We also assessed the appropriateness of the related
disclosures.

To determine any potential impairment of the value
of the loans granted to its subsidiaries, management
has assessed the financial strength (net asset value
or NAV) of the subsidiary.

Refer to note 9 Other non-current assets - Loans to
Group companies.

Other Information

The Board of Directors is responsible for the other information. The other information comprises the
information included in the annual report, but does not include the financial statements, the
consolidated financial statements, the compensation report and our auditor’s reports thereon.

Our opinion on the financial statements does not cover the other information and we do not express
any form of assurance conclusion thereon.

In connection with our audit of the financial statements, our responsibility is to read the other
information and, in doing so, consider whether the other information is materially inconsistent with
the financial statements, or our knowledge obtained in the audit or otherwise appears to be materially
misstated. If, based on the work we have performed, we conclude that there is a material
misstatement of this other information,we are required to report that fact. We have nothing to report
in this regard.

Responsibilities of the Board of Directors for the Financial Statements

The Board of Directors is responsible for the preparation of the financial statements in accordance
with the provisions of Swiss law and the Company's articles of incorporation, and for such internal
control as the Board of Directors determines is necessary to enable the preparation of financial
statements that are free from material misstatement, whether due to fraud or error.

In preparing the financial statements, the Board of Directors is responsible for assessing the
Company’s ability to continue as a going concern, disclosing, as applicable, matters related to going
concern and using the going concern basis of accounting unless the Board of Directors either intends
to liquidate the Company or to cease operations, or has no realistic alternative but to do so.

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Addex Therapeutics Annual Report 2023 │Statutory Financial Statements

Auditor’s Responsibilities for the Audit of the Financial Statements

Our objectives are to obtain reasonable assurance about whether the financial statements as a whole
are free from material misstatement, whether due to fraud or error, and to issue an auditor’s report
that includes our opinion. Reasonable assurance is a high level of assurance, but is not a guarantee
that an audit conducted in accordance with Swiss law and SA-CH will always detect a material
misstatement when it exists. Misstatements can arise from fraud or error and are considered material
if, individually or in the aggregate, they could reasonably be expected to influence the economic
decisions of users taken on the basis of these financial statements.

A further description of the auditor’s responsibilities for the audit of the financial statements is
located at EXPERTsuisse's website at: https://www.expertsuisse.ch/en/audit-report-for-ordinary-
audits. This description forms part of our auditor’s report.

Report on Other Legal and Regulatory Requirements

In accordance with Art. 728a para. 1 item 3 CO and PS-CH 890, we confirm that an internal control
system exists, which has been designed for the preparation of financial statements according to the
instructions of the Board of Directors.

We further confirm that the proposed carry forward of the accumulated losses complies with Swiss
law and the company’s articles of incorporation. We recommend that the financial statements
submitted to you be approved.

We draw attention to the fact that treasury shares have been subscribed by a group company in excess
of 10 percent of the share capital, which is in breach of Article 659 paragraph 2 of the Swiss Code of
Obligations.

Geneva, 18 April 2024

BDO Ltd

Christoph Tschumi

Licensed Audit Expert
Auditor in Charge

Nigel Le Masurier

Licensed Audit Expert

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Addex Therapeutics Annual Report 2023

Forward Looking Statements

These materials contain forward-looking statements that can be identified by terminology such as “not approvable”, “continue”,
“believes”, “believe”, “will”, “remained open to exploring”, “would”, “could”, or similar expressions, or by express or implied discussions
regarding Addex Therapeutics, formerly known as, Addex Pharmaceuticals, its business, the potential approval of its products by
regulatory authorities, or regarding potential future revenues from such products. Such forward-looking statements reflect the current
views of Addex Therapeutics regarding future events, future economic performance or prospects, and, by their very nature, involve
inherent risks and uncertainties, both general and specific, whether known or unknown, and/or any other factor that may materially
differ from the plans, objectives, expectations, estimates and intentions expressed or implied in such forward-looking statements.
Such may in particular, cause actual results with allosteric modulators of mGlu2 PAM, mGlu5 NAM, GABAB PAM or other therapeutic
targets to be materially different from any future results, performance or achievements expressed or implied by such statements.
There can be no guarantee that allosteric modulators of mGlu2 PAM, mGlu5 NAM, GABAB PAM or other therapeutics targets will be
approved for sale in any market or by any regulatory authority. Nor can there be any guarantee that allosteric modulators of mGlu2
NAM, mGlu5 NAM, GABAB PAM or other therapeutic targets will achieve any particular levels of revenue (if any) in the future. In
particular, management’s expectations regarding allosteric modulators of mGlu2 PAM, mGlu5 NAM, GABAB PAM or other therapeutic
targets could be affected by, among other things, unexpected actions by our partners, unexpected regulatory actions or delays or
government regulation generally; unexpected clinical trial results, including unexpected new clinical data and unexpected additional
analysis of existing clinical data; competition in general; government, industry and general public pricing pressures; the company’s
ability to obtain or maintain patent or other proprietary intellectual property protection. Should one or more of these risks or
uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those anticipated,
believed, estimated or expected. Addex Therapeutics is providing the information in these materials as of this date and does not
undertake any obligation to update any forward-looking statements contained in these materials as a result of new information, future
events or otherwise, except as may be required by applicable laws.

For more information about the Addex Therapeutics Ltd Group please contact:

Addex Therapeutics
C/O Addex Pharma SA
Chemin des Mines 9
1202 Geneva
Switzerland

Investor & Media Relations
Tel: +41 22 884 15 55
Fax: +41 22 884 15 56
investor.relations@addextherapeutics.com
media.relations@addextherapeutics.com

Share Registry
SharecommServices AG
Tel: +41 44 809 58 58
Fax: +41 44 809 58 59

General Information
Tel: +41 22 884 15 55
Fax: +41 22 884 15 56
info@addextherapeutics.com

Addex on the Internet
www.addextherapeutics.com

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