GlobeNewswire Inc | Aug 4, 2021 07:00AM EDT

August 04, 2021

Announced strategic acquisition of industry-leading Parkinsons disease vaccine and equity investment led by key investors in Covid-19 vaccine innovator BioNTech SE

ACI-24 full Phase 1b results presented at AAIC 2021 support the continued clinical development of anti-Abeta vaccine approaches in Down syndrome-related Alzheimers disease

Expanded Phase 1b/2 anti-pTau Alzheimers vaccine trial in collaboration with Janssen Pharmaceuticals, Inc. to support the programs continued development

Strong financial position of CHF 199.1 million in cash ensures the Company is fully financed through at least Q1 2024

LAUSANNE, Switzerland, Aug. 04, 2021 (GLOBE NEWSWIRE) -- AC Immune SA (NASDAQ: ACIU), a clinical-stage biopharmaceutical company pioneering precision medicine for neurodegenerative diseases, today reported its financial results for the quarter ended June 30, 2021, and provided a corporate update.

Prof. Andrea Pfeifer, CEO of AC Immune SA, commented: AC Immune continues its expansion with the transformative acquisition of PD01, which significantly strengthens our active vaccines portfolio by adding a clinically validated candidate in Parkinsons disease, whilst maintaining a strong financial position of CHF 199.1 million in cash. In Q1, the Company released positive data on the safety and immunogenicity of ACI-24 and ACI-35.030, our anti-Abeta and anti-Tau vaccines in Alzheimers disease. We firmly believe that a vaccine approach coupled with the right diagnostic tools can bring an alternative therapeutic approach to prevent neurodegenerative diseases in large populations, like for Covid-19.

Q2 2021 and Subsequent Highlights

-- Announced an all-stock acquisition of Affiris portfolio of therapeutics targeting alpha-synucleinnotably PD01, a clinically validated active vaccine candidate that places AC Immune at the forefront of Parkinsons disease drug development. Through the planned acquisition and a concurrent financing, AC Immune will also strengthen its cash position and add Athos Service GmbH (Strngmann family office), First Capital Partner GmbH (Egger Family Office), and MIG Fonds, the three lead investors in Covid-19 vaccine innovator BioNTech SE, to its shareholder base. -- Presented the full resultsfrom the landmark Phase 1b clinical trial evaluating the anti-Abeta vaccine ACI-24 in subjects with Down syndrome at the Alzheimers Association International Conference (AAIC) 2021, showing that ACI-24 generated evidence of immunogenicity along with a positive pharmacodynamic response and a favorable safety and tolerability profile. Based on these results, the Company plans to advance an optimized formulation of ACI-24 into mid-stage clinical testing to treat and prevent the progression of Down syndrome (DS)-related Alzheimers disease (AD). -- Provided key clinical and preclinical updates for its AD vaccine candidates targeting pathological amyloid beta (Abeta). The 18 months treatment and additional six-months safety observation is completed for all participants. The study is currently under analysis and AC Immune plans to present the results at an international Alzheimer conference. Non-human primate data further highlight the strong immunogenicity of our optimized ACI-24 formulation against pathological Abeta species, including oligomeric and pyroglutamate Abeta. -- Expanded the Phase 1b/2a trial evaluating the first-in-class anti-phosphorylated-Tau (pTau) vaccine candidate ACI-35.030 for the treatment of AD in collaboration with Janssen Pharmaceuticals, Inc. The trial expansion, which was based onencouraging interim safety, tolerability and immunogenicity resultsto date, specifically includes vaccination of additional AD patients at the second highest dose to support continued development of ACI-35.030.

Achieved and Anticipated 2021 milestonesClinical Milestones

-- ACI-35.030 anti-pTau vaccine: reported Phase 1b/2a interim results in AD patients in Q1 (second highest dose); further Phase 1b/2a interim analysis in Q4 (highest dose) -- JACI-35.054 alternative anti-pTau vaccine: reported a Phase 1b/2a interim analysis in AD patients in Q2 (low dose) -- Alpha-synuclein PET imaging agent: advanced third-generation candidate to first-in-human clinical study in Q1; readout expected in Q3 -- ACI-24 anti-Abeta vaccine in DS: reported Phase 1b topline results in Q1 -- ACI-24 in AD: reported Phase 2, 12-month interim analysis in Q1; reported 18-month interim analysis in Q2 -- Semorinemab anti-Tau antibody: Phase 2 trial primary completion (estimated last patient, last visit) in moderate AD in Q3 -- ACI-3024 small molecule MorphomerTau aggregation inhibitor: select NeuroOrphan indication for further development in H2 -- ACI-24 in DS: submit investigational new drug (IND) application for optimized vaccine formulation in Q4

Preclinical Milestones

-- Alpha-synuclein small molecule inhibitor: identified first biologically active small molecule in Q1; startin vivoproof-of-concept studies in Q3 -- TDP-43 imaging agent: initiate investigational new drug (IND)-enabling studies in Q3 -- Morphomer NLRP3-ASC: reportin vivoproof-of-concept results in a non-central nervous system (CNS) disease model and beginin vivoproof-of-concept studies with validated candidate in CNS in Q4 -- Anti-NLRP3-ASC antibody: beginin vivoproof-of-concept studies in Q4 -- Anti-TDP-43 antibody: initiate IND-enabling toxicology studies in Q4 -- TDP-43 biofluid diagnostic: establish validation-ready assay in Q4

Analysis of Financial Statements for the quarter ended June 30, 2021

-- Cash Position: The Company had a total cash balance ofCHF 199.1 million, composed ofCHF 104.1 millionin cash and cash equivalents andCHF 95.0 millionin short-term financial assets. This compares to a total cash balance ofCHF 225.9 millionas ofDecember 31, 2020. The Companys cash balance provides enough capital resources to progress through at least Q1 2024 without consideration of potential incoming milestone payments. -- Contract Revenues: The Company did not record contract revenues for the three months ended June 30, 2021, a decrease of CHF 1.1 million from the comparable period. The overall decrease is predominantly related to CHF 0.9 million of contract revenue associated with R&D activities in our agreement with Lilly that were recognized in 2020 and did not repeat in the current period. -- R&D Expenditures: R&D expenses increased by CHF 0.9 million for the three months ended June 30, 2021, to CHF 13.7 million. Discovery and preclinical expenses (+0.8 million): The Company increased expenditures across a variety of its discovery and preclinical programs. These include investments for the development of our anti-TDP-43 antibody with the initiation of IND-enabling studies, the expansion of our Morphomer Tau program into NeuroOrphan indications and various other investments across our programs.Clinical expenses (-0.6 million): The Company decreased expenditures across multiple clinical programs, as certain clinical activities completed or incurred significant scaling up in the prior period. For example, the Company completed its clinical activities of the Phase 1 trial of our Morphomer Tau asset in partnership with Lilly. Additionally, the Company incurred less expense for ACI-24 for DS-related AD as a result of prior period scaling up activities for a Phase 2 clinical trial which were not repeated in the current period.Salary- and benefit-related costs (+0.4 million): The Companys salary- and benefit-related costs increased primarily due to the internal reallocation of certain employees salaries and annualization of 2020 hires and increases in share-based compensation -- G&A Expenditures: For the three months ended June 30, 2021, G&A increased by CHF 1.1 million to 5.2 million. This increase is predominantly related transaction costs incurred in completing the asset acquisition for Affiris alpha-synuclein portfolio and cash, the internal reallocation of certain employees salaries and other administrative items. -- Other Operating Income: The Company recognized CHF 0.3 million in grant income for R&D activities performed under our Michael J. Fox Foundation for Parkinsons Research (MJFF) and Target ALS grants, an increase of CHF 0.1 million compared to the prior period. -- IFRS Loss for the Period: The Company reported a net loss after taxes of CHF 19.1 million for the three months ended June 30, 2021, compared with a net loss of CHF 15.8 million for the comparable period in 2020.

About AC Immune SA AC Immune SAis clinical-stage biopharmaceutical company that aims to become a global leader in precision medicine for neurodegenerative diseases, including Alzheimers disease, Parkinsons disease, and NeuroOrphan indications driven by misfolded proteins. The Companys two clinically validated technology platforms, SupraAntigenand Morphomer, fuel its broad and diversified pipeline of first- and best-in-class assets, which currently features ten therapeutic and three diagnostic candidates, six of which are currently in clinical trials.AC Immunehas a strong track record of securing strategic partnerships with leading global pharmaceutical companies includingGenentech, a member of the Roche Group, Eli Lilly and Company, andJanssen Pharmaceuticals, Inc., resulting in substantial non-dilutive funding to advance its proprietary programs and >$3 billionin potential milestone payments.

SupraAntigen is a registered trademark of AC Immune SA in the following territories: AU, EU, CH, GB, JP and RU. Morphomer is a registered trademark of AC Immune SA in CN, CH, GB, JP, and NO.

For further information, please contact:

Media Relations Investor RelationsSaoyuth Nidh Yves Kremer, Ph.D.AC Immune AC ImmunePhone: +41 21 345 91 34 Phone: +41 21 345 91 90Email: saoyuth.nidh@acimmune.com Email: yves.kremer@acimmune.com

U.S. Media U.S. InvestorsKatie Gallagher Corey Davis, Ph.D.LaVoie Health Science LifeSci AdvisorsPhone: +1 617 792 3937 Phone: +1 212 915 2577Email: kgallagher@lavoiehealthscience.com Email: cdavis@lifesciadvisors.com

Forward-looking statementsThis press release contains statements that constitute forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Forward-looking statements are statements other than historical fact and may include statements that address future operating, financial or business performance or AC Immunes strategies or expectations. In some cases, you can identify these statements by forward-looking words such as may, might, will, should, expects, plans, anticipates, believes, estimates, predicts, projects, potential, outlook or continue, and other comparable terminology. Forward-looking statements are based on managements current expectations and beliefs and involve significant risks and uncertainties that could cause actual results, developments and business decisions to differ materially from those contemplated by these statements. These risks and uncertainties include those described under the captions Item 3. Key Information Risk Factors and Item 5. Operating and Financial Review and Prospects in AC Immunes Annual Report on Form 20-F and other filings with the Securities and Exchange Commission. These include: the impact of Covid-19 on our business, suppliers, patients and employees and any other impact of Covid-19. Forward-looking statements speak only as of the date they are made, and AC Immune does not undertake any obligation to update them in light of new information, future developments or otherwise, except as may be required under applicable law. All forward-looking statements are qualified in their entirety by this cautionary statement.

Balance Sheets(In CHF thousands)

As of June 30, As of December 31, 2021 2020ASSETS Non-current assets Property, plant and equipment 5,165 4,416 Right-of-use assets 2,699 2,223 Long-term accrued income 61 ? Long-term financial assets 363 334 Total non-current assets 8,288 6,973 Current assets Prepaid expenses 2,726 3,954 Short-term accrued income 659 1,591 Other current receivables 282 329 Short-term financial assets 95,000 65,000 Cash and cash equivalents 104,135 160,893 Total current assets 202,802 231,767 Total assets 211,090 238,740 SHAREHOLDERS? EQUITY AND LIABILITIES Shareholders? equity Share capital 1,539 1,538 Share premium 354,899 346,890 Treasury shares (85 ) (100 )Accumulated losses (167,071 ) (132,850 )Total shareholders? equity 189,282 215,478 Non-current liabilities Long-term deferred income 61 ? Long-term lease liabilities 2,126 1,780 Net employee defined-benefit liabilities 7,774 7,464 Total non-current liabilities 9,961 9,244 Current liabilities Trade and other payables 317 2,184 Accrued expenses 10,611 11,085 Short-term deferred income 348 306 Short-term lease liabilities 571 443 Total current liabilities 11,847 14,018 Total liabilities 21,808 23,262 Total shareholders? equity and 211,090 238,740 liabilities

Statements of Income/(Loss)(In CHF thousands, except for per-share data)

For the Three Months For the Six Months Ended June 30, Ended June 30, 2021 2020 2021 2020 Revenue Contract revenue ? 1,083 ? 13,365 Total revenue ? 1,083 ? 13,365 Operating expenses Research & (13,710 ) (12,809 ) (27,040 ) (28,018 )development expensesGeneral &administrative (5,235 ) (4,156 ) (9,573 ) (8,660 )expensesOther operating 256 195 673 324 income/(expense)Total operating (18,689 ) (16,770 ) (35,940 ) (36,354 )expensesOperating loss (18,689 ) (15,687 ) (35,940 ) (22,989 ) Financial income ? 17 ? 78 Financial expense (202 ) (56 ) (228 ) (113 )Exchange differences (178 ) (12 ) 365 (401 )Finance result, net (380 ) (51 ) 137 (436 )Loss before tax (19,069 ) (15,738 ) (35,803 ) (23,425 )Income tax expense ? ? ? ? Loss for the period (19,069 ) (15,738 ) (35,803 ) (23,425 )Loss per share: (0.26 ) (0.22 ) (0.50 ) (0.33 )Basic and dilutedloss for the period 72,715,783 71,875,102 72,113,581 71,869,658 attributable toequity holders

Statements of Comprehensive Income/(Loss)(In CHF thousands)

For the Three Months For the Six Months Ended June 30, Ended June 30, 2021 2020 2021 2020 Loss for the period (19,069 ) (15,738 ) (35,803 ) (23,425 )Other comprehensive loss not tobe reclassified to income or loss in subsequent periods (net oftax):Re-measurement losses ondefined-benefit plans (net of ? ? ? ? tax)Total comprehensive loss, net of (19,069 ) (15,738 ) (35,803 ) (23,425 )tax

Reconciliation of loss to adjusted loss andloss per share to adjusted loss per share

For the Three Months For the Six Months Ended June 30, Ended June 30,In CHF thousands,except for share and 2021 2020 2021 2020 per share dataLoss (19,069 ) (15,738 ) (35,803 ) (23,425 )Adjustments Non-cash share-based 836 995 1,694 1,847 payments^1Foreign currency 258 43 (363 ) 498 (gains)/losses^2Transaction costs^3 410 ? 410 ? Adjusted Loss (17,565 ) (14,700 ) (34,062 ) (21,080 ) Loss per share ? (0.26 ) (0.22 ) (0.50 ) (0.33 )basic and dilutedAdjustment to lossper share ? basic and 0.02 0.02 0.03 0.04 dilutedAdjusted loss pershare ? basic and (0.24 ) (0.20 ) (0.47 ) (0.29 )dilutedWeighted-averagenumber of sharesoutstanding Adjusted 72,715,783 71,875,102 72,113,581 71,869,658 loss ?basic anddiluted

Reflects non-cash expenses associated with share-based compensation for ^ equity awards issued to Directors, Management and employees of the Company. 1 This expense reflects the awards? fair value recognized for the portion of the equity award which is vesting over the period. ^ Reflects foreign currency re-measurement gains and losses for the period, 2 predominantly impacted by the change in the exchange rate between the US Dollar and Euro with the Swiss Franc. ^ Reflects transaction costs for the asset acquisition for a portfolio of 3 therapeutics targeting alpha-synuclein and cash.

Adjustments for the three and six months ended June 30, 2021, decreased net loss by CHF 1.5 million and CHF 1.7 million, respectively compared with a decrease to net loss of CHF 1.0 million and CHF 2.3 million for the comparable periods in 2020, respectively.The Company recorded CHF 0.8 million and CHF 1.7 million for share-based compensation expenses, respectively, in each of these periods. There were foreign currency re-measurement losses of CHF 0.3 million and gains of CHF 0.4 million, respectively, primarily related to movement in the USD-CHF exchange rate during the respective periods. Finally, the Company incurred CHF 0.4 million in transaction costs associated with its acquisition of a portfolio of therapeutics targeting alpha-synuclein in the three months ended June 30, 2021.