ACIU · AC Immune SA · Investor Relations

All primary endpoints of the study were met, with ACI-7104 shown to be generally safe and well tolerated Strong immunogenicity demonstrated, with 100% response rate after three immunizations Clear antibody penetration into the cerebrospinal fluid (CSF) and signals for target engagement Discussions

AC Immune Announces Positive Preliminary Phase 1 Data for NLRP3 Inhibitor ACI-19764 ACI-19764 is an orally available inhibitor of the NLRP3 inflammasome Preliminary data showed ACI-19764 was safe and well tolerated across single and multiple ascending dose cohorts with confirmed CSF penetration

AC Immune Receives FDA Fast Track Designation for Anti-Alpha-synuclein Active Immunotherapy, ACI-7104, to Treat Early Parkinson’s Disease (PD) Ongoing Phase 2 VacSYn study to expand to sites in USA with Investigational New Drug (IND) clearance Recent positive interim results showed safety and

AC Immune First Half 2026 Financial and Corporate Update Focused portfolio of wholly-owned programs approach near-term clinical catalysts as partnered programs generate milestone payments Key advances across pipeline, with further near-term clinical results anticipated for H2 2026 Phase 2 VacSYn

AC Immune to Showcase Neurodegenerative Disease Pipeline with Three Presentations at AAIC ® 2026 Lausanne, Switzerland, July 7, 2026 -- AC Immune SA (NASDAQ: ACIU), a clinical-stage biopharmaceutical company pioneering precision therapeutics for neurodegenerative diseases, today announces three

AC Immune Reports Interim 12-Month Data from Phase 1b/2 ABATE Trial of ACI-24 in Prodromal Alzheimer’s Disease ACI-24 anti-Abeta active immunotherapy generally safe and well tolerated in first three Alzheimer’s disease (AD) cohorts in ABATE Anti-Abeta antibody dose-response demonstrated with

AC Immune to Receive Research Grant from Goradia Family for Development of ACI-7104 in Parkinson’s Disease Grant supports extension of Part 1 of Phase 2 VacSYn trial of ACI-7104 Planned extension of Part 1 will assess long-term safety and efficacy of ACI-7104 for an additional 2 years Final data

AC Immune Presents New Phase 1 Data Indicating Higher Uptake of TDP-43 PET Tracer ACI-19626 in Patients with ALS Presentation at 2026 TDP43 Summit shows ACI-19626 detects TDP-43 pathology in patients with amyotrophic lateral sclerosis (ALS) Previously reported data also showed detection of TDP-43

AC Immune Announces Retirement of CEO Dr Andrea Pfeifer at Upcoming AGM Co-founder and CEO, Dr Andrea Pfeifer, to retire after a distinguished 23-year tenure Board Chair, Martin Zügel, MD, to be appointed interim CEO Dr Pfeifer to serve as an Advisor and Honorary Chair of the Board of

AC Immune First Quarter 2026 Financial and Corporate Updates Dosed first subjects in Phase 1 trial of brain-penetrant small molecule NLRP3 inhibitor ACI-19764 with SAD/MAD results in healthy volunteers expected in H2 2026 Initiated final cohort, AD4, in ABATE Phase 1b/2 trial of ACI-24 to treat

AC Immune Initiates Final Cohort in Ongoing Phase 1b/2 ABATE Trial of Anti-Abeta Active Immunotherapy to Treat Alzheimer's Disease Treatment of first patient in Cohort AD4 in ABATE trial triggers $12 million milestone payment Allows evaluation of potential for precision prevention of