Geneva, Switzerland, March 7, 2022 – Addex Therapeutics (SIX: ADXN, Nasdaq: ADXN), a clinical-stage pharmaceutical company pioneering allosteric modulation-based drug discovery and development, announced today that it will issue its full-year 2021 financial results on Thursday, March 10, 2022. Tim Dyer, CEO, Roger Mills, CMO and Robert Lütjens, Head of Discovery Biology, will provide a business update and review its pipeline during a teleconference and webcast for investors, analysts and media at 16:00 CET (15:00 GMT / 10:00 EST / 07:00 PST) the same day.

Title: Addex Therapeutics to Announce Full Year 2021 Financial Results and Provides Corporate Update Date: March 10, 2022
Time: 16:00 CET (15:00 GMT / 10:00 EST / 07:00 PST)

Joining the Conference Call:
1: In the 10 minutes prior to the call start time, call the appropriate participant dial-in number.
Dial-In Numbers:

• Switzerland 044 580 7145

• France 017 070 0781

• U.S.A 1 646 741 3167

• UK / International +44 (0) 2071 928 338

2: Provide the Operator with the Participation Confirmation Code: 5484873

Link to live event online:
In the 10 minutes prior to the call start time, sign in online by following this Webex Link.

About Addex Therapeutics:
Addex Therapeutics is a clinical-stage pharmaceutical company focused on the development and commercialization of an emerging class of novel orally available small molecule drugs known as allosteric modulators for neurological disorders. Allosteric modulators offer several potential advantages over conventional non-allosteric molecules and may offer an improved therapeutic approach to conventional "orthosteric" small molecule or biological drugs. Addex's allosteric modulator drug discovery platform targets receptors and other proteins that are recognized as essential for therapeutic intervention. Addex's lead drug candidate, dipraglurant (mGlu5 negative allosteric modulator or NAM), is in a pivotal registration clinical trial for Parkinson’s disease levodopa induced dyskinesia (PD-LID) and has entered a Phase 2 clinical study for the treatment of blepharospasm, a form of dystonia. Addex's third clinical program, ADX71149 (mGlu2 positive allosteric modulator or PAM), developed in collaboration with Janssen Pharmaceuticals, Inc., is in a Phase 2a proof of concept clinical trial for the treatment of epilepsy. Indivior PLC has licensed Addex’s GABAB PAM program for the development of drug candidates with a focus in addiction. Preclinical programs include GABAB PAM for CMT1A, mGlu7 NAM for PTSD, mGlu2 NAM for mild neurocognitive disorders, mGlu4 PAM for Parkinson’s disease and mGlu3 PAM for neurodegenerative disorders. Addex shares are listed on the SIX Swiss Exchange and American Depositary Shares representing its shares are listed on the NASDAQ Capital Market, and trade under the ticker symbol "ADXN" on each exchange.

Contact:

Tim Dyer Chief Executive Officer Telephone: +41 22 884 15 55 PR@addextherapeutics.com

Mike Sinclair Partner, Halsin Partners +44 (0) 207 318 2955 msinclair@halsin.com

James Carbonara Hayden IR +1 646 755 7412 james@haydenir.com

Addex Forward Looking Statements:
This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, as amended, including in respect of the anticipated initiation of clinical trials. The words “may,” “will,” “could,” “would,” “should,” “expect,” “plan,” “anticipate,” “intend,” “believe,” “estimate,” “predict,” “project,” “potential,” “continue,” “target” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Any forward-looking statements in this press release, are based on management's current expectations and beliefs and are subject to a number of risks, uncertainties and important factors that may cause actual events or results to differ materially from those expressed or implied by any forward-looking statements contained in this press release, including, without limitation, uncertainties related to market conditions. These and other risks and uncertainties are described in the Company’s Annual Report on Form 20-F filed with the SEC on March 11, 2021, as well as market conditions and regulatory review. Any forward-looking statements contained in this press release represent Addex Therapeutics’ views only as of the date hereof and should not be relied upon as representing its views as of any subsequent date. Addex Therapeutics explicitly disclaims any obligation to update any forward-looking statements.

Any forward-looking statements contained in this press release represent Addex Therapeutics’ views only as of the date hereof and should not be relied upon as representing its views as of any subsequent date. Addex Therapeutics explicitly disclaims any obligation to update any forward-looking statements, except as required by law.