Exhibit 99.1

Oculis Reports Q4 and Full Year 2023 Financial Results and Update on Company Progress

ZUG, Switzerland, and BOSTON, March 18, 2024 (GLOBE NEWSWIRE) -- Oculis Holding AG (Nasdaq: OCS) (“Oculis” or the “Company”), a global biopharmaceutical company purposefully driven to save sight and improve eye care, today announced fourth quarter and full year financial results for the period ended December 31, 2023, and an overview of the Company’s progress.

Riad Sherif M.D., Chief Executive Officer of Oculis:

“2023 was a remarkable milestone-rich year for Oculis. Following our listing on NASDAQ, we had two positive Phase 3 data readouts with OCS-01, the first topical candidate with compelling data in DME, and achieved a strong close of the year with the initiation of three clinical trials, including the OCS-02 Phase 2b RELIEF trial in DED. As our innovative and diversified pipeline continues to advance, we remain laser-focused on delivering our key programs: OCS-01 in DME, OCS-02 in DED and OCS-05 in Acute Optic Neuritis. We are confident and excited as we move into a catalyst-rich 2024 and look forward to updating everyone on the upcoming RELIEF trial readout planned in Q2, the second Phase 3 OPTIMIZE-2 trial readout of OCS-01 in ocular surgery in Q4, which will allow us to submit our first NDA, in addition to the ACUITY trial readout of OCS-05 in Acute Optic Neuritis, also planned in Q4. I would like to thank our exceptional team and all our partners for their great contribution but also for their commitment towards our mission to save sight and improve eye care.”

Q4 2023 and Recent Highlights

Upcoming Clinical Milestones

In 2024, the Company is focused on advancing its innovative pipeline and planned clinical development programs including:

Q2 2024

Q4 2024

Q4 and Full Year 2023 Financial Highlights

Non-IFRS Financial Information

This press release contains financial measures that do not comply with International Financial Reporting Standards (IFRS) including non-IFRS net loss for the full year 2023, and non-IFRS net loss per common share for the same period. These non-IFRS financial measures exclude the impact of items that the Company’s management believes affect comparability or underlying business trends. These measures supplement the Company’s financial results prepared in accordance with IFRS. The Company’s management uses these measures to better analyze its financial results and better estimate its financial outlook. In management’s opinion, these non-IFRS measures are useful to investors and other users of the Company's financial statements by providing greater transparency into the ongoing operating performance of the Company and its future outlook. Such measures should not be deemed to be an alternative to IFRS requirements.

The non-IFRS measures for the reported periods reflect adjustments made to exclude:

The non-IFRS measures presented here are also unlikely to be comparable with non-IFRS disclosures released by other companies. See the “Reconciliation of Non-IFRS Measures

(Unaudited)” table below for a reconciliation of these non-IFRS measures to the most directly comparable IFRS measures.

Consolidated Statements of Financial Position

Consolidated Statements of Loss

Reconciliation of Non-IFRS Measures (Unaudited)

-ENDS-

About Oculis

Oculis is a global biopharmaceutical company (Nasdaq: OCS) purposefully driven to save sight and improve eye care. Oculis’ highly differentiated pipeline comprises multiple innovative product candidates in development. It includes OCS-01, a topical eye drop candidate for diabetic macular edema (DME) and for the treatment of inflammation and pain following cataract surgery; OCS-02, a topical biologic anti-TNFα eye drop candidate for dry eye disease (DED) and for non-infectious anterior uveitis; and OCS-05, a disease modifying candidate for acute optic neuritis (AON) and other neuro-ophthalmic disorders such as glaucoma, diabetic retinopathy, geographic atrophy, and neurotrophic keratitis. Headquartered in Switzerland and with operations in the U.S., Oculis’ goal is to deliver life-changing treatments to patients worldwide. The company is led by an experienced management team with a successful track record and is supported by leading international healthcare investors.

For more information, please visit: www.oculis.com

Oculis Contacts

Ms. Sylvia Cheung, CFO
sylvia.cheung@oculis.com

Investor & Media Relations

LifeSci Advisors

Corey Davis, Ph.D.

cdavis@lifesciadvisors.com

1-212-915-2577

Cautionary Statement Regarding Forward Looking Statements

This press release contains forward-looking statements and information. For example, statements regarding the potential benefits of OCS-01, OCS-02 and OCS-05, including patient impact and market opportunity; the potential of OCS-01 for treating front- and back-of-the-eye diseases; the potential for OCS-01 to become a new standard of care with the first once-daily, topical, preservative-free corticosteroid for treating inflammation and pain following ocular surgery; the potential of OCS-01 for the treatment of DME, inflammation and pain following ocular surgery and CME; the potential of OCS-02 for treating DED; the potential of OCS-02 to become the first approved topical anti- TNFα for DED; the potential of OCS-05 for treating AON and other neuro-ophthalmic disorders; expected cash runway; expected future milestones and catalysts, including the timing of completing enrolment in the RELIEF trial, topline results for OPTIMIZE-2 and ACUITY trials and IND status for OCS-05; the initiation, timing, progress and results of Oculis’ clinical and preclinical studies; Oculis’ research and development programs, regulatory and business strategy, future development plans, and management; Oculis’ ability to advance product candidates into, and successfully complete, clinical trials; and the timing or likelihood of regulatory filings and approvals, are forward-looking. All forward-looking statements are based on estimates and assumptions that, while considered reasonable by Oculis and its management, are inherently uncertain and are inherently subject to risks, variability and contingencies, many of which are beyond Oculis’ control.

These forward-looking statements are provided for illustrative purposes only and are not intended to serve as, and must not be relied on by an investor as, a guarantee, assurance, prediction or definitive statement of a fact or probability. Actual events and circumstances are difficult or impossible to predict and will differ from assumptions. All forward-looking statements are subject to risks, uncertainties and other factors that may cause actual results to differ materially from those that we expected and/or those expressed or implied by such forward-looking statements. Forward-looking statements are subject to numerous conditions, many of which are beyond the control of Oculis, including those set forth in the Risk Factors section of Oculis’ annual report on Form 20-F and any other documents filed with the U.S. Securities and Exchange Commission (the “SEC”). Copies of these documents are available on the SEC’s website, www.sec.gov. Oculis undertakes no obligation to update these statements for revisions or changes after the date of this release, except as required by law.

Oculis Holding AG

Consolidated Financial Statements

Report of the statutory auditor

to the General Meeting of Oculis Holding AG

Zug

Report on the audit of the consolidated financial statements

Opinion

We have audited the consolidated financial statements of Oculis Holding AG and its subsidiaries (the Group), which comprise the consolidated statement of financial position as of December 31, 2023, and the consolidated statement of loss, the consolidated statement of comprehensive loss, the consolidated statement of changes in equity, the 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 give a true and fair view of the consolidated financial position of the Group as of December 31, 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 and the requirements of the Swiss audit profession, as well as the International Code of Ethics for Professional Accountants (including International Independence Standards) issued by 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.

Our audit approach

Materiality

The scope of our audit was influenced by our application of materiality. Our audit opinion aims to provide reasonable assurance that the consolidated financial statements are free from material misstatement. Misstatements may arise due to fraud or error. They are considered material if, individually or in aggregate, they could reasonably be expected to influence the economic decisions of users taken on the basis of the consolidated financial statements.

Based on our professional judgement, we determined certain quantitative thresholds for materiality, including the overall Group materiality for the consolidated financial statements as a whole as set out in the table below. These, together with qualitative considerations, helped us to determine the scope of our audit and the nature, timing and extent of our audit procedures and to evaluate the effect of misstatements, both individually and in aggregate, on the consolidated financial statements as a whole.

We agreed with the Audit Committee that we would report to them misstatements above CHF 258 thousand identified during our audit as well as any misstatements below that amount which, in our view, warranted reporting for qualitative reasons.

Audit scope

We tailored the scope of our audit in order to perform sufficient work to enable us to provide an opinion on the consolidated financial statements as a whole, taking into account the structure of the Group, the accounting processes and controls, and the industry in which the Group operates.

Oculis is a global biopharmaceutical company purposefully driven to save sight and improve eye care. Headquartered in Switzerland, the Group also has operations in the U.S., Iceland, France and Hong-Kong.

The Group’s financial statements are a consolidation of 7 reporting units. We identified 3 reporting units that, in our view, required a full scope audit due to their size or risk characteristics. Specified procedures were also carried out at a further 3 reporting entities to give appropriate coverage of material balances. The majority of the audit procedures was performed by the Group auditor out of Switzerland.

Key audit matters

Key audit matters are those matters that, in our professional judgement, 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.

Accounting Impact of the Capital Reorganization

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 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.

Board of Directors' responsibilities for the consolidated financial statements

The Board of Directors is responsible for the preparation of consolidated financial statements that 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.

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.

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

We communicate with the Board of Directors or its relevant committee 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 or its relevant committee with a statement that we have complied with relevant ethical requirements regarding independence, and communicate with them regarding 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.

From the matters communicated with the Board of Directors or its relevant committee, we determine those matters that were of most significance in the audit of the consolidated financial statements of the current period and are therefore the key audit matters. We describe these matters in our auditor’s report unless law or regulation precludes public disclosure about the matter or when, in extremely rare circumstances, we determine that a matter should not be communicated in our report because the adverse consequences of doing so would reasonably be expected to outweigh the public interest benefits of such communication.

Report on other legal and regulatory requirements

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

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

PricewaterhouseCoopers SA

Lausanne, March 19, 2024

Oculis Holding AG, Zug

Consolidated Statements of Financial Position

(in CHF thousands)

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

Oculis Holding AG, Zug

Consolidated Statements of Loss

(in CHF thousands, except loss per share data)

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

Oculis Holding AG, Zug

Consolidated Statements of Comprehensive Loss

(in CHF thousands)

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

Oculis Holding AG, Zug

Consolidated Statements of Changes in Equity

(in CHF thousands, except share numbers)

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

Oculis Holding AG, Zug

Consolidated Statements of Cash Flows

(in CHF thousands)

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

Oculis Holding AG, Zug

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Oculis Holding AG ("Oculis" or "the Company") is a stock corporation ("Aktiengesellschaft") with its registered office at Bahnhofstrasse 7, CH-6300, Zug, Switzerland. It was incorporated under the laws of Switzerland on October 31, 2022.

The Company controls six wholly-owned subsidiaries: Oculis Operations GmbH ("Oculis Operations") with its registered office in Lausanne, Switzerland, which was incorporated in Zug, Switzerland on December 27, 2022, Oculis ehf ("Oculis Iceland"), which was incorporated in Reykjavik, Iceland on October 28, 2003, Oculis France Sàrl ("Oculis France") which was incorporated in Paris, France on March 27, 2020, Oculis US, Inc. ("Oculis US") with its registered office in Newton MA, USA, which was incorporated in Delaware, USA, on May 26, 2020, Oculis HK, Limited ("Oculis HK") which was incorporated in Hong Kong, China on June 1, 2021 and Oculis Merger Sub II Company ("Merger Sub 2") which was incorporated in the Cayman Islands on January 3, 2023 and is pending dissolution which will be completed in April 2024. The Company and its wholly-owned subsidiaries form the Oculis Group (the "Group"). Prior to the Business Combination (as defined in Note 5), Oculis SA ("Legacy Oculis"), which was incorporated in Lausanne, Switzerland on December 11, 2017, and its wholly-owned subsidiaries Oculis Iceland, Oculis France, Oculis U.S. and Oculis HK formed the Oculis group. On July 6, 2023, Legacy Oculis merged with and into Oculis Operations, and the separate corporate existence of Legacy Oculis ceased. Oculis Operations is the surviving company and remains a wholly-owned subsidiary of Oculis.

The purpose of the Company is the research, study, development, manufacture, promotion, sale and marketing of pharmaceutical products and substances as well as the purchase, sale and exploitation of intellectual property rights, such as patents and licenses, in the field of ophthalmology. As a global biopharmaceutical company, Oculis is developing treatments to save sight and improve eye care with breakthrough innovations. The Company’s differentiated pipeline includes candidates for topical retinal treatments, topical biologics and disease modifying treatments.

The consolidated financial statements of Oculis as of and for the year ended December 31, 2023, were approved and authorized for issue by the Company's Board of Directors on March 15, 2024.

The Group's accounts are prepared on a going concern basis. To date, the Group has financed its cash requirements primarily from share issuances, as well as government research and development grants. The recent business combination with European Biotech Acquisition Corp. (“EBAC”) and the listing in NASDAQ early in March 2023 raised additional funding to secure business continuity as explained under note 5. The Board of Directors believes that the Group has the ability to meet its financial obligations for at least the next 12 months.

The Company is a late clinical stage company and is exposed to all the risks inherent to establishing a business. Inherent to the Company’s business are various risks and uncertainties, including the substantial uncertainty as to whether current projects will succeed. The Company’s success may depend in part upon its ability to (i) establish and maintain a strong patent position and protection, (ii) enter into collaborations with partners in the biotech and pharmaceutical industry, (iii) successfully move its product candidates through clinical development, and (iv) attract and retain key personnel. The Company’s success is subject to its ability to be able to raise capital to support its operations. To date, the Company has financed its cash requirements primarily through the sale of its preferred stock, proceeds from the Business Combination, PIPE Financing and conversion of CLA and the sale of its common stock. Shareholders should note that the long-term viability of the Company is dependent on its ability to raise additional capital to finance its future operations. The Company will continue to evaluate additional funding through public or private financings, debt financing or collaboration agreements. The Company cannot be certain that additional funding will be available on acceptable terms, or at all. If the Company is unable to raise additional capital when required or on acceptable terms, it may have to (i) significantly delay, scale back or discontinue the development of one or more product candidates; (ii) seek collaborators for product candidates at an earlier stage than otherwise would be desirable and on terms that are less favorable than might otherwise be available; or (iii) relinquish or otherwise dispose of rights to product candidates that the Company would otherwise seek to develop itself, on unfavorable terms.

The consolidated financial statements of Oculis are prepared in accordance with IFRS Accounting Standards ("IFRS") as issued by the International Accounting Standards Board (“IASB”).

Prior to consummation of the Business Combination on March 2, 2023, the audited consolidated financial statements as of and for the year ended December 31, 2022 were issued for Legacy Oculis and its subsidiaries. Legacy Oculis became a wholly-owned subsidiary of the Company as a result of the Business Combination. In accordance with the BCA and described in Note 5, Oculis issued 3,780,399 ordinary shares to Legacy Oculis shareholders in exchange for 3,306,771 Legacy Oculis ordinary shares (after cancellation of 100,000 Legacy Oculis treasury shares) at the Exchange Ratio.

The number of ordinary shares, and the number of ordinary shares within the loss per share held by the shareholders prior to the Business Combination have been adjusted by the Exchange Ratio to reflect the equivalent number of ordinary shares in the Company.

Reclassifications: given the immateriality of amounts recorded in financial assets and deferred income tax assets as of December 31, 2023 and 2022, these line items have been aggregated into Other non-current assets in the Consolidated Statements of Financial Position presented herein.

The policies set out below are consistently applied to all the years presented. The consolidated financial statements have been prepared under the historical cost convention, unless stated otherwise in the accounting policies in Note 3.

The totals are calculated with the original unit amounts, which could lead to rounding differences. These differences in thousands of units are not changed in order to keep the accuracy of the original data.

The consolidated financial statements of the Group are expressed in CHF, which is the Company's functional and presentation currency. The functional currency of the Company's subsidiaries is the local currency except for Oculis Iceland whose functional currency is CHF.

Assets and liabilities of foreign operations are translated into CHF at the rate of exchange prevailing at the reporting date and their statements of profit or loss are translated at yearly average exchange rates. The exchange differences arising on translation for consolidation are recognized in other comprehensive income.

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

The Company presents assets and liabilities in the balance sheet based on current/non-current classification. The Company classifies all amounts to be realized or settled within 12 months after the reporting period to be current and all other amounts to be non-current.

Foreign currency transactions are translated into the functional currency, Swiss Francs (CHF), using prevailing exchange rates at the dates of the transactions. Monetary assets and liabilities denominated in foreign currencies are translated into CHF at rates of exchange prevailing at reporting date. Any gains or losses from these translations are included in the statements of loss in the period in which they arise.

Oculis has six wholly owned subsidiaries, including Oculis Operations, Oculis Iceland, Oculis France, Oculis US, Oculis HK and Merger Sub 2. The Company's consolidated financial statements present the aggregate of the six Group entities, after elimination of intra-group transactions, balances, investments and capital.

The Company is managed and operated as one business. A single management team that reports to the Chief Executive Officer comprehensively manages the entire business and accordingly, has one reporting segment.

The Company has locations in five countries: Switzerland, Iceland, France, USA and Hong Kong. An analysis of non-current assets by geographic region is presented in Note 6.

All leases are accounted for by recognizing a right-of-use asset and a lease liability except for leases of low value assets and leases with a duration of 12 months or less.

Lease liabilities are measured at the present value of the expected contractual payments due to the lessor over the lease term, with the discount rate determined by reference to the rate inherent in the lease unless this is not readily determinable, in which case the Group’s incremental borrowing rate on commencement date of the lease is used. Variable lease payments are only included in the measurement of the lease liability if they depend on an index or rate and remain unchanged throughout the lease term.

Other variable lease payments are expensed.

On initial recognition, the carrying value of the lease liability also includes amounts expected to be payable under any residual value guarantee, and the exercise price of any purchase option granted in favor of the group if it is reasonably certain to assess that option.

Right-of-use assets are initially measured at the amount of the lease liability, reduced for any lease incentives received, and increased for lease payments made at or before commencement of the lease and initial direct costs incurred.

Subsequent to the initial measurement, lease liabilities increase as a result of interest charged at a constant rate on the balance outstanding and are reduced for lease payments made. Right-of-use assets are depreciated on a straight-line basis over the remaining expected term of the lease or over the remaining economic life of the asset if this is judged to be shorter than the lease term.

When the Company revises its estimate of the term of any lease, it adjusts the carrying amount of the lease liability to reflect the expected payments over the revised term, which are discounted using a revised discount rate. The carrying value of lease liabilities is similarly revised if the variable future lease payments dependent on a rate or index is revised. In both cases, an equivalent adjustment is made to the carrying value of the right-of-use asset, with the revised carrying amount being amortized over the remaining lease term. If the carrying amount of the right-of-use asset is adjusted to zero, any further reduction is recognized in profit or loss.

Grant income is recognized where there is reasonable assurance that the grant will be received and all attaching conditions will be complied with, and in the year when the related expenses are incurred.

Taxes reported in the consolidated statements of loss include current and deferred taxes on profit. Taxes on income are accrued in the same periods as the revenues and expenses to which they relate.

Deferred tax is the tax attributable to the temporary differences that appear when taxation authorities recognize and measure assets and liabilities with rules that differ from those of the consolidated accounts. Deferred income tax is calculated using the liability method and 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. Any changes to the tax rates are recognized in the consolidated statements of loss unless related to items directly recognized in equity or other comprehensive loss.

Deferred income tax is recognized on temporary differences arising between the tax bases of assets and liabilities and their carrying amounts in the consolidated financial statements. Deferred income tax assets are recognized only to the extent that it is probable that future taxable profit will be available against which the temporary differences or the unused tax losses can be utilized. Deferred income tax assets from tax credit carry forwards are recognized to the extent that the national tax authority confirms the eligibility of such a claim and that the realization of the related tax benefit through future taxable profits is probable. Deferred income tax assets and liabilities are offset when there is a legally enforceable right to offset current tax assets against current tax liabilities and when the deferred income tax assets and liabilities relate to income taxes levied by the same taxation authority on either the same taxable entity or different taxable entities where there is an intention to settle the balances on a net basis.

The Company presents basic earnings / (loss) per share for each period in the financial statements. The earnings (loss) per share is calculated by dividing the earnings / (loss) of the period by the weighted average number of shares outstanding during the period. Diluted earnings per share, applicable in case of positive result, reflect the potential dilution that could occur if dilutive securities such as warrants or share options were exercised into common shares.

Judgment was required in determining the classification of the preferred shares issued by the Company as either equity or liabilities. The preferred shareholders hold certain preference rights that include preferential distribution of proceeds in the case of liquidity events as defined in the shareholder agreements. Under IAS 32 the Company classified the Preferred Shares as liabilities. This applied to Series A, B and C shares as per Note 15.

The Company considers all highly liquid investments with an original maturity of less than 3 months at the date of purchase to be cash equivalents. Cash and cash equivalents are recorded at cost, which approximates fair value.

Short-term financial assets consist of fixed term bank deposits with maturities between three and six months. Short-term financial assets are held in order to collect contractual cash flows made of payments of principal and interests.

Short-term financial assets are measured at amortized cost (approximates fair value) and are subsequently measured using the effective interest method. This method allocates interest income over the relevant period by applying the effective interest rate to the carrying amount of the asset. Gains and losses are recognized in the consolidated statements of loss when the asset is derecognized, modified or impaired.

The Company measures certain financial assets and liabilities at fair value on a recurring basis, including warrants. Fair value is the price the Company would receive to sell an asset or pay to transfer a liability in an orderly transaction with a market participant at the measurement date. The Company uses a three-level hierarchy that prioritizes fair value measurements based on the types of inputs used, as follows:

There was no change in the valuation techniques applied to financial instruments during all periods presented. There were no transfers between levels 1, 2 or 3 for recurring fair value measurements during the year. The Group recognizes transfers into and out of fair value hierarchy levels at the end of the reporting period.

All property and equipment are shown at cost, less subsequent depreciation and impairment. Cost includes expenditures that are directly attributable to the acquisition of the items. 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.

Depreciation is calculated on a straight-line basis over the useful life, according to the following schedule:

The assets’ residual values and useful lives are reviewed, and adjusted if appropriate, at each balance sheet date. An asset’s carrying amount is impaired immediately to its recoverable amount if the asset’s carrying amount is greater than its estimated recoverable amount. Gains and losses on disposal or retirement of tangible fixed assets are determined by comparing the net proceeds received with the carrying amounts and are included in the consolidated statements of loss.

The Company recognizes the warrant instruments as liabilities at fair value and adjusts the instruments to fair value at each reporting period (refer to Note 18). Any change in fair value is recognized in the Company’s consolidated statements of loss. The fair value of the public warrants traded in active markets is based on the quoted market prices at the end of the reporting period for such warrants. Since the private placement warrants have identical terms to the public warrants, the Company determined that the fair value of each private placement warrant is equivalent to that of each public warrant. Public warrant instruments are included in Level 1 and private warrants in Level 2 in the fair value hierarchy. Warrants were classified as short-term liabilities given the Company cannot defer the settlement for at least 12 months.

Research expenditure is recognized in expense in the year in which it is incurred. Internal development expenditure is capitalized only if it meets the recognition criteria of IAS 38 “Intangible Assets”. Where regulatory and other uncertainties are such that the criteria are not met, which is almost invariably the case prior to approval of the drug by the relevant regulatory authority, the expenditure is recognized in the consolidated statements of loss. Where, however, recognition criteria are met, internal development expenditure is capitalized and amortized on a straight-line basis over its useful economic life. The amortization of the licenses will start when the market approval is obtained.

Licenses acquired are capitalized as intangible assets at historical cost and amortized over their useful lives, which are determined on a basis of the expected pattern of consumption of the expected future economic benefits embodied in the licenses and which therefore commence only once the necessary regulatory and marketing approval has been received. These licenses are tested for impairment in the last quarter of each financial period, or when there is any indication for impairment.

Amortization of capitalized licenses is charged to research and development expenses.

Impairment of capitalized licenses is charged to research and development expenses.

Assets that are subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the asset may not be recoverable.

An impairment loss is recognized for the amount by which the asset's carrying amount exceeds its recoverable amount. The recoverable amount is the higher of the asset's fair value less costs of disposal and value-in-use.

For the purpose of impairment testing, assets are grouped together into the smallest group of assets that generate cash inflows from continuing use that are largely independent of the cash flows of other assets ("cash-generating units"). Impairment losses are recognized in the consolidated statements of loss. Prior impairments of non-financial assets are reviewed for possible reversal of the impairment at each reporting date.

The principal financial instruments used by the Company are as follows:

These financial instruments are carried at amortized cost.

Due to their short-term nature, the carrying value of cash and cash equivalents, short-term financial assets, other current assets, excluding prepaid expenses, accrued income, trade payables, accrued expenses and other payables approximates their fair value. For details of the fair value hierarchy, valuation techniques, and significant unobservable inputs related to determining the fair value of long-term financial debt, refer to Note 21.

The carrying amount of other receivables/current assets is reduced through the use of an allowance account, and the amount of the loss is recognized in the consolidated statements of loss. Subsequent recoveries of amounts previously written off are credited to the consolidated statements of loss.

Grant income reflects reimbursement of research and development expenses and income from certain research projects managed by Icelandic governmental institutions. Certain expenses qualify for incentives from the Icelandic government in the form of tax credits or cash reimbursements.

Short-term financial assets consist of fixed term bank deposits with maturities between three and six months. Short-term financial assets are held in order to collect contractual cash flows made of payments of principal and interests.

Cash and cash equivalents include cash on hand and highly liquid investments with original maturities of three months or less. These investments are readily convertible to known amounts of cash.

Trade payables are amounts due to third parties in the ordinary course of business. Trade payables are non-interest bearing and are normally settled on 45-day terms.

Accrued expenses and other payables are amounts provided for / due to third parties in the ordinary course of business. Accrued expenses and other payables are non-interest bearing.

Lease liabilities are measured at the present value of the expected contractual payments due to the lessor over the lease term, with the discount rate determined by reference to the rate inherent in the lease unless this is not readily determinable, in which case the Group’s incremental borrowing rate on commencement date of the lease is used.

Long-term financial debt exclusively results from the issuance of preferred shares that qualify as financial liabilities under IAS 32. Long-term financial debt is carried at amortized cost, plus the accrued interest/preferred dividend payments that are due by the Group under certain conditions. Refer to Note 15 for further information.

The Company operates a defined benefit pension plan for its Swiss-based employees, which is held in a multi-employer fund. The pension plan is funded by payments from employees and from the Company. The Company’s contributions to the defined contribution plans are charged to the consolidated statements of loss in the year to which they relate.

The liability recognized in the balance sheet in respect of defined benefit pension plans is the present value of the defined benefit obligation at the balance sheet date less the fair value of plan assets and the possible effect of the asset ceiling, together with adjustments for unrecognized past-service costs. The defined benefit obligation is calculated annually by independent actuaries using the projected unit credit method.

When the Company has a surplus in the defined benefit pension plans, it measures the net defined benefit asset at the lower of:

The Company does not expect any refunds or contribution reductions in case of a surplus in the defined benefit pension plan calculated per IAS 19, therefore no assets would be recognized in the Consolidated Statements of Financial Position.

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.

Actuarial gains and losses arising from experience adjustments and changes in actuarial assumptions are charged or credited to equity in other comprehensive income in the period in which they arise.

Past-service costs are recognized immediately in income, unless the changes to the pension plan are conditional on the employees remaining in service for a specified period of time (the vesting period). In this case, the past-service costs are amortized on a straight-line basis over the vesting period.

The Company operates an equity-settled, share-based compensation plan, under which the entity receives services from employees as consideration for equity instruments (e.g. options) of the Company. The fair value of the awards granted in exchange of the employee services received is recognized as an expense.

Non-market vesting conditions are included in assumptions about the number of options that are expected to vest. The total expense is recognized over the vesting period, which is the period over which all of the specified vesting conditions are to be satisfied. At the end of each reporting period, the entity revises its estimates of the number of options that are expected to vest based on the non-market vesting conditions. It recognizes the impact of the revision to original estimates, if any, in the consolidated statements of loss, with a corresponding adjustment to equity.

When the options are exercised, the Company issues new shares. The proceeds received net of any directly attributable transaction costs are credited to share capital (nominal value) and share premium when the options are exercised.

The Company recognizes the earnout consideration as a share-based contingent consideration within the scope of IFRS 2, and therefore equity classified as the earnout consideration ultimately settles in ordinary shares. The Company has determined that the fair value of the earnout shares should be accounted for as a component of the deemed cost of the listing services upon consummation of the Business Combination. The fair value of total consideration transferred included in the calculation of the IFRS 2 share listing service expense will not be subsequently adjusted regardless of whether the price target is achieved or not. The earnout options granted to employees were determined to be compensation for the dilution to their previously held Legacy Oculis equity instruments. No additional compensation charge is recognized under IFRS 2 because no additional fair value was granted as a result of the earnout options.

The Company capitalizes transaction costs within Other current assets in the Company’s consolidated balance sheet when costs are directly attributable to new equity financing instrument (including business combination related transactions) when it is highly probable that the financing transaction will take place in the future. If and when the Company completes the transaction, capitalized transaction costs will be offset against the proceeds and will be recorded as a reduction of share premium within the Company’s consolidated balance sheet. If the Company determines that it is not highly probable that the transaction will be completed, the Company will write-off capitalized transaction costs incurred during that respective quarter in the consolidated statement of loss.

There are no new IFRS standards, amendments or interpretations that are mandatory as of January 1, 2023 that are relevant to the Company. Additionally, the Company has not adopted any standard, interpretation or amendment that has been issued but is not yet effective. Such standards are not currently expected to have a material impact on the entity in the current or future reporting periods and on foreseeable future transactions.

The Group’s principal accounting policies are set out in Note 3 of the Group’s consolidated financial statements and conform to IFRS Accounting Standards. Significant judgments and estimates are used in the preparation of the consolidated financial statements which, to the extent that actual outcomes and results may differ from these assumptions and estimates, could affect the accounting in the areas described in this section.

The Group assesses whether there are any indicators of impairment for all licenses at each reporting date, which refers exclusively to the licenses of two specific product candidates: OCS-02 (Licaminlimab) and OCS-05. Given the stage of Oculis’ development activities and the importance of both products in Oculis’ portfolio, the impairment test is performed first on the basis of a fair value model for the entire Company using a market approach, and second on the basis of the continued development feasibility of the relevant product candidate. Refer to Note 9.

Deferred income tax assets are recognized for all unused tax losses only to the extent that it is probable that taxable profits will be available against which the losses can be utilized. Judgment is required from management to determine the amount of tax asset that can be recognized, based on forecasts and tax planning strategies. Given the uncertainty in the realization of future taxable profits, no deferred tax asset on unused tax losses has been recognized as of December 31, 2023, 2022 and 2021. Refer to Note 7 (D).

The present value of the pension obligations depends on several factors that are determined on an actuarial basis using a number of assumptions. The assumptions used in determining the net cost (income) for pensions include the discount rate. Any changes in these assumptions will impact the carrying amount of pension obligations. The independent actuary of the Group uses statistical based assumptions covering future withdrawals of participants from the plan and estimates on life expectancy. The actuarial assumptions used may differ materially from actual results due to changes in market and economic conditions, higher or lower withdrawal rates or longer or shorter life spans of participants.

These differences could have a significant impact on the amount of pension income or expenses recognized in future periods.

The Group determines the appropriate discount rate at the end of each year. This is the interest rate 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. Refer to Note 12.

(D) Share-based compensation

Stock options granted are valued using the Black-Scholes option-pricing model (see Note 13). This valuation model as well as parameters used such as expected volatility and expected term of the stock options are partially based on management’s estimates. The expected volatility is estimated using historical stock volatilities of comparable peer public companies within the Company's industry. The expected term represents the period that share-based awards are expected to be outstanding. The Company classifies its share-based payments as equity-classified awards as they are settled in ordinary shares. The Company measures equity-classified awards at their grant date fair value using a Black-Scholes option pricing model and does not subsequently remeasure them. Compensation costs related to equity-classified awards are equal to the fair value of the award at grant-date amortized over the vesting period of the award using the graded method. The Company reclassifies a portion of vested awards to reserve for share-based payment as the awards vest. The proceeds received net of any directly attributable transaction costs are credited to share capital (nominal value) and share premium when the options are exercised.

In relation to the Business Combination, the following critical estimates and judgments were made:

Despite EBAC being the legal acquirer, Legacy Oculis was determined to be the accounting acquirer for financial reporting purposes. This determination is primarily based on the fact that subsequent to the Business Combination, i) the shareholders of Legacy Oculis have a majority of the voting interest in the combined company; ii) Legacy Oculis’ operations comprise all of the ongoing operations of the combined company; and iii) Legacy Oculis’ management comprise all of the senior management of the combined company.

EBAC was a Special Purpose Acquisition Company and therefore does not meet the definition of a business under IFRS 3 as it has no operations and the related BCA cannot be treated as a business combination. The Business Combination was accounted for as a continuation of Legacy Oculis financial statements with a deemed issuance of shares by the Company accompanied by a recapitalization of the Company’s equity. The excess of fair value of the shares deemed issued by the Company over EBAC’s identifiable net assets has been recorded as share-based payment expense in accordance with IFRS 2 and represents a public listing service received by the Company.

Legacy Oculis and EBAC incurred costs such as legal, accounting, auditing, printer fees and other professional fees directly related to the Business Combination (“Transaction costs”). Transaction costs directly associated with equity issuance qualify for capitalization and are accounted for as a deduction of share premium. To capture costs associated with the new equity, the Company allocated capitalizable transaction costs to the various transaction components (equity issuance and listing) at the percentages of 38.0% and 62.0% for new shares and old shares, respectively.

Business combination with European Biotech Acquisition Corp (“EBAC”)

On March 2, 2023, the Company consummated a business combination with EBAC (the “Business Combination”) pursuant to the Business Combination Agreement ("BCA") between Legacy Oculis and EBAC dated as of October 17, 2022. The Company received gross proceeds of CHF 97.6 million or $103.7 million comprising CHF 12.0 million or $12.8 million of cash held in EBAC’s trust account and CHF 85.6 million or $90.9 million from private placement ("PIPE") investments and conversion of notes issued under Convertible Loan Agreements (“CLA”) into Oculis' ordinary shares. In connection with the Business Combination, Oculis was listed on the Nasdaq Global Market with the ticker symbol "OCS" for its ordinary shares and “OCSAW” for its public warrants.

Under the terms of the BCA, EBAC formed four new legal entities (i) Oculis, (ii) Oculis Merger Sub I Company ("Merger Sub 1"), (iii) Merger Sub 2, and (iv) Oculis Operations. After two consecutive mergers between Merger Sub 1 and EBAC, and EBAC and Merger Sub 2, EBAC and Merger Sub 1 ceased to exist and Merger Sub 2 was the surviving company.

During the third quarter of 2023, the Company gave effect in its financial statements to the impending dissolution of Merger Sub 2, which is expected to be completed in the second quarter of 2024. As a result, the cumulative translation adjustments related to Merger Sub 2 previously reported as equity and recognized in other comprehensive income, were reclassified from equity to the Consolidated Statements of Loss for the year ended December 31, 2023. The resulting foreign exchange impact of such reclassification amounted to CHF 5.0 million for the year ended December 31, 2023.

As a result of the BCA and as of the acquisition closing date on March 2, 2023:

PIPE and CLA financing

In connection with the BCA, EBAC entered into subscription agreements with the PIPE investors for an aggregate of 7,118,891 shares of EBAC Class A ordinary shares at CHF 9.42 or $10.00 per share for aggregate gross proceeds of CHF 67.1 million or $71.2 million.

In connection with the BCA, Legacy Oculis and the investor parties thereto entered into CLAs pursuant to which the investor lenders granted Legacy Oculis a right to receive an interest free convertible loan with certain conversion rights with substantially the same terms as the PIPE investors. Following the mergers, Oculis assumed the CLAs and the lenders exercised their conversion rights in exchange for 1,967,000 ordinary shares at CHF 9.42 or $10.00 per share for aggregate gross proceeds of CHF 18.5 million or $19.7 million.

Together, the PIPE and CLA financing resulted in aggregate gross cash proceeds of CHF 85.6 million or $90.9 million to Oculis in exchange for 9,085,891 ordinary shares.

Merger and listing expense

The Business Combination is accounted for as a capital re-organization. As EBAC does not meet the definition of a business in accordance with IFRS 3 Business Combinations, the BCA is accounted for within the scope of IFRS 2 Share-based Payment.

The Business Combination is treated as the equivalent of the Company issuing shares for the net assets of EBAC as of the acquisition closing date, accompanied by a recapitalization. The net assets of EBAC are stated at historical cost, with no goodwill or other intangible assets recorded. Any excess of the fair value of the Company’s shares issued considering a fair value of CHF 10.54 or $11.19 per share (price of EBAC ordinary share at the closing date) over the value of EBAC’s identifiable net assets acquired represents compensation for the service of a stock exchange listing for its shares.

This expense was incurred in the first quarter of 2023 and amounted to CHF 34.9 million, which was expensed to the statement of loss as operating expenses, “Merger and listing expense”. The expense is non-recurring in nature and represents a share-based payment made in exchange for a listing service and does not lead to any cash outflows.