Ad Hoc Announcement Pursuant to Art. 53 LR Geneva, Switzerland – June 30, 2025 – Addex Therapeutics (SIX: ADXN), a clinical-stage biopharmaceutical company focused on developing a portfolio of novel small molecule allosteric modulators for neurological disorders, today announced it has led a CHF 2 million investment in Stalicla, a clinical-stage company focused on precision medicine for neurodevelopmental and neuropsychiatric disorders. Stalicla will use the financing to advance its portfolio of autism focu ...

Press Release Stalicla Secures CHF 2 Million Financing Led by Addex Therapeutics to Advance Precision Medicine Neurodevelopmental Disorder Programs Geneva, Switzerland – June 30, 2025 – STALICLA SA, a Geneva-based clinical-stage biotech company pioneering precision medicine for neurodevelopmental and neuropsychiatric disorders, today announced the successful closing of a CHF 2 million financing led by Addex Therapeutics. This financing will sustain operations and program development in neurodevelopmental di ...

Core Viewpoint - Addex Therapeutics reported a strong start to 2025 with significant progress in product development and business milestones, particularly in their GABAB PAM drug candidate for chronic cough and regained rights to their Phase 2 mGlu2 PAM asset, ADX71149 [2][5]. Financial Summary - Income for Q1 2025 was CHF 71,000, a decrease of CHF 164,000 from CHF 235,000 in Q1 2024 [4]. - R&D expenses decreased to CHF 156,000 from CHF 245,000, a reduction of CHF 89,000 [4][8]. - G&A expenses decreased to CHF 521,000 from CHF 778,000, a reduction of CHF 257,000 [4][8]. - Total operating loss improved to CHF 606,000 from CHF 788,000, an improvement of CHF 182,000 [4]. - Net loss from continuing operations was CHF 1,473,000, compared to CHF 735,000 in Q1 2024, an increase of CHF 738,000 [4]. - Net loss for the period decreased to CHF 1,473,000 from CHF 3,087,000, a reduction of CHF 1,614,000 [4][9]. - Basic and diluted net loss per share was CHF 0.01, down from CHF 0.03 in the same period last year [4][10]. - Cash and cash equivalents increased to CHF 2.8 million from CHF 1.6 million, an increase of CHF 1.2 million [4][11]. - Shareholders' equity improved significantly to CHF 8.3 million from a negative CHF 1.4 million [4]. Operational Highlights - The GABAB PAM chronic cough candidate demonstrated robust anti-tussive activity in multiple disease models [5][6]. - The company regained rights to its Phase 2 mGlu2 PAM asset, ADX71149 [5][6]. - Indivior successfully advanced their GABAB PAM program for substance use disorders through IND enabling studies [5][6]. - An option agreement was entered with Sinntaxis for exclusive licensing of intellectual property related to mGlu5 NAM in brain injury recovery [5][6].

Group 1 - Addex Therapeutics will release its Q1 2025 Financial Results on June 19, 2025, followed by a business update and product pipeline review during a teleconference and webcast [1][2] - The teleconference will be held at 16:00 CEST (15:00 BST / 10:00 EDT / 07:00 PDT) [2] - Addex Therapeutics focuses on developing novel small molecule allosteric modulators for neurological disorders, with its lead drug candidate, dipraglurant, under evaluation for brain injury recovery [3] Group 2 - Addex's partner, Indivior, has selected a GABAB PAM drug candidate for substance use disorders and completed IND enabling studies [3] - The company is also advancing an independent GABAB PAM program for chronic cough and holds a 20% equity interest in Neurosterix LLC, which is developing allosteric modulator programs for various neurological conditions [3] - Addex shares are listed on the SIX Swiss Exchange and NASDAQ under the ticker symbol "ADXN" [3]

Core Viewpoint - Addex Therapeutics announced significant anti-tussive activity of its GABAB positive allosteric modulator (PAM) in preclinical models, indicating potential as a treatment for chronic cough [1][3][4] Company Overview - Addex Therapeutics is a clinical-stage biopharmaceutical company focused on developing novel small molecule allosteric modulators for neurological disorders [6] - The company’s lead drug candidate, dipraglurant, is being evaluated for brain injury recovery [6] - Addex has a partnership with Indivior for a GABAB PAM drug candidate aimed at substance use disorders, which has completed IND enabling studies [6] Product Development - The GABAB PAM drug candidate demonstrated significant reductions in cough frequency and increased cough latency in preclinical models, outperforming reference drugs like nalbuphine, baclofen, and codeine [3][4] - The candidate showed better tolerability and a wider therapeutic margin compared to nalbuphine and baclofen, while being comparable to a P2X3 inhibitor [3] - The company is preparing to advance the GABAB PAM candidate into IND enabling studies following positive in vivo proof of concept [4] Scientific Background - GABAB receptors are crucial in the cough neural circuit, and activating these receptors has been clinically validated with baclofen, which has limitations due to side effects and loss of efficacy [5] - The allosteric modulation approach offers advantages such as higher selectivity and better tolerability compared to traditional orthosteric compounds [5]

Core Insights - Addex Therapeutics is a clinical-stage biopharmaceutical company focused on developing novel small molecule allosteric modulators for neurological disorders [4] - The company announced the presentation of preclinical data for its GABAB positive allosteric modulator cough program at the 10th American Cough Conference [1][2] Company Overview - Addex's lead drug candidate is dipraglurant, a negative allosteric modulator targeting mGlu5, currently under evaluation for brain injury recovery [4] - The company is advancing an independent GABAB PAM program specifically for chronic cough, while also collaborating with Indivior on a GABAB PAM drug candidate for substance use disorders [4] - Addex holds a 20% equity interest in Neurosterix LLC, which is developing a portfolio of allosteric modulator programs for various neurological conditions [4] Presentation Details - The presentation will be led by Mikhail Kalinichev, Head of Translational Science, discussing the antitussive efficacy of Compound A in guinea pig models [2][3] - The presentation is scheduled for June 7, 2025, at 11:20 am EST [7] Scientific Background - GABAB receptors are crucial in the cough neural circuit and are activated by the neurotransmitter GABA [3] - Current treatments like baclofen have limitations, and targeting allosteric sites may offer advantages such as higher selectivity and better tolerability [3]

Core Points - Addex Therapeutics, a clinical-stage biopharmaceutical company, focuses on developing novel small molecule allosteric modulators for neurological disorders [4] - The company's lead drug candidate, dipraglurant, is being evaluated for brain injury recovery, including post-stroke and traumatic brain injury recovery [4] - The 2025 Annual General Meeting (AGM) is scheduled for June 24, 2025, in Geneva, Switzerland [1] Agenda Summary - Approval of the Annual Report and Financial Statements for 2024 [2] - Consultative vote on the Compensation Report for 2024 [3] - Re-elections of Board members, including Vincent Lawton as Chairman [3] - Approval of compensation for Board members and Executive Management [3] - Re-election of Auditors and Independent Voting Rights Representative [3] Company Overview - Addex holds a 20% equity interest in Neurosterix LLC, which is advancing allosteric modulator programs for various neurological conditions [4] - The company is also developing a GABAB PAM drug candidate in partnership with Indivior for substance use disorders [4] - Addex shares are listed on the SIX Swiss Exchange and NASDAQ under the ticker symbol "ADXN" [4]

Ad Hoc Announcement Pursuant to Art. 53 LR Functional recovery following stroke relies on the formation of new or reactivation of existing neural connections. Accumulating evidence suggests that the mGlu5 receptor modulates brain plasticity and function. A paper published in BRAIN*, titled "Inhibiting metabotropic glutamate receptor 5 after stroke restores brain function and connectivity", showed that daily treatment with mGlu5 NAMs for 12 days, starting 2 or 10 days after stroke, restored lost somatosensor ...

Core Viewpoint - Addex Therapeutics reported its full-year 2024 financial results, highlighting progress in clinical development and a significant net profit from discontinued operations, primarily due to the sale of part of its business to Neurosterix [1][4][8]. Financial Performance - Total income for 2024 was CHF 410,000, a decrease of CHF 1.2 million from CHF 1.6 million in 2023 [4][11]. - Research and Development (R&D) expenses decreased to CHF 854,000 from CHF 1.2 million, while General and Administrative (G&A) expenses also decreased to CHF 2.3 million from CHF 2.7 million [4][12]. - The total operating loss increased to CHF 2.8 million in 2024 from CHF 2.2 million in 2023 [4][13]. - Net loss from continuing operations was CHF 4.9 million, an increase of CHF 2.4 million compared to CHF 2.5 million in 2023 [4][13]. - The company reported a net profit of CHF 7.1 million for the period, primarily due to a net profit from discontinued operations of CHF 12.0 million [9]. Corporate Developments - The company launched Neurosterix with Perceptive Advisors, raising USD 65 million in Series A funding to advance its preclinical portfolio [6][7]. - Indivior selected a GABAB PAM drug candidate for development in substance use disorders, while Addex selected its own GABAB PAM for chronic cough [2][6]. - Addex regained full control of its mGlu2 PAM asset, ADX71149, and repositioned dipraglurant for brain injury recovery [2][6]. Cash Position - Cash and cash equivalents decreased to CHF 3.3 million at the end of 2024 from CHF 3.9 million at the end of 2023, primarily due to cash used in operating activities [10].

Core Viewpoint - Addex Therapeutics will announce its Full-Year 2024 Financial Results on April 25, 2025, and provide a business update along with a review of its product pipeline during a teleconference and webcast [1][2]. Company Overview - Addex Therapeutics is a clinical-stage biopharmaceutical company focused on developing novel small molecule allosteric modulators for neurological disorders [4]. - The lead drug candidate, dipraglurant, is being evaluated for brain injury recovery, including post-stroke and traumatic brain injury recovery [4]. - The company has a partnership with Indivior for a GABAB PAM drug candidate aimed at substance use disorders and is advancing its own GABAB PAM program for chronic cough [4]. - Addex holds a 20% equity interest in Neurosterix LLC, which is developing a portfolio of allosteric modulator programs targeting schizophrenia, mood disorders, and mild neurocognitive disorders [4]. - Addex shares are listed on the SIX Swiss Exchange and NASDAQ under the ticker symbol "ADXN" [4].