Exhibit 2.3

DESCRIPTION OF THE REGISTRANT’S SECURITIES

REGISTERED PURSUANT TO SECTION 12 OF THE

SECURITIES EXCHANGE ACT OF 1934

The following description sets forth certain material terms and provisions of the securities of Molecular Partners AG (“Molecular Partners,” the “Company,” “we,” “us,” and “our”) that are registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). This description also summarizes relevant provisions of the laws of Switzerland. The following summary does not purport to be complete and is subject to, and is qualified in its entirety by reference to, the applicable provisions of the laws of Switzerland and our articles of association, a copy of which is filed as an exhibit to the Annual Report on 20-F of which this Exhibit is a part. We encourage you to read our articles of association and the applicable provisions of the laws of Switzerland for additional information.

General

Our securities include (a) our ordinary shares, CHF 0.10 nominal value per share, and (b) our American Depositary Shares (the “ADSs”), each representing one ordinary share, CHF 0.10 nominal value per share. Our ordinary shares are registered under the Exchange Act not for trading, but only in connection with the listing of the ADSs on The Nasdaq Global Select Market.

Our ADSs are listed on The Nasdaq Global Select Market under the trading symbol “MOLN.”

The following is a description of the rights of (i) the holders of ordinary shares and (ii) ADS holders. Ordinary shares underlying the outstanding ADSs are held by Citibank N.A., as depositary.

Swiss Corporate Law Reform

On January 1, 2023 legislation that modernized certain aspects of Swiss corporate law (the Swiss corporate law reform (Aktienrechtsrevision)) entered into force. Most relevantly, the legislative reform addressed, among other topics, (i) the modernization and increased flexibility for a stock corporation's capital base, (ii) the strengthening of shareholder rights and the protection of minorities, (iii) certain changes to financial distress/restructuring measures, (iv) corporate governance and executive compensation matters (amongst others, the incorporation of the ordinance against excessive compensation in listed stock corporations (the “OaEC”) into the Swiss Code of Obligations (the “CO”), and (v) certain socio-political topics (e.g., gender representation and disclosure requirements for companies active in the raw materials sector, which, subject to transitional periods, entered into force on January 1, 2021). The Swiss corporate law reform is subject to certain transitional periods as provided for therein. In particular, Swiss stock corporations registered with the Commercial Register on January 1, 2023, are required to amend their articles of association and organizational regulations in line with the new legislation within a transitional period of two years, i.e., until January 1, 2025. For that purpose, we intend to propose to our shareholders the approval of certain amendments to our articles of association at the next annual general meeting of shareholders. Until such amendments have been adopted and approved by the general meeting of shareholders, our current articles of association remain in full force and effect.

Ordinary Shares

The following is a summary of the rights of our holders of our ordinary shares as specified in our articles of association.

Type and Class of Securities

Each ordinary share has a nominal value of CHF 0.10 per share.

Ordinary Capital Increase, Authorized and Conditional Share Capital

Under Swiss corporate law, we may increase our share capital (Aktienkapital) with a resolution of the general meeting of shareholders (ordinary capital increase) that must be carried out by the board of directors within six months in order to become effective. Under Swiss corporate law, in case of a subscription and increase against contributions in cash, a resolution passed by an absolute majority of the votes represented at the general meeting of shareholders is required. In the case of a subscription and increase through the conversion of equity surplus, against

1

contributions in kind, by set-off against a claim, the granting of special benefits, or when shareholders’ statutory pre-emptive rights are limited or withdrawn, a resolution passed by two-thirds of the votes represented at a general meeting of shareholders and the majority of the nominal value of the shares represented is required.

Furthermore, under the CO, our shareholders, by a resolution passed by two-thirds of the votes represented at a general meeting of shareholders and the majority of the nominal value of the shares represented, at such meeting may empower the board of directors to issue shares of a specific aggregate nominal amount up to a maximum of 50% of the existing issued share capital as Registered in the Commercial Register, in the form of:

•conditional capital (bedingtes Kapital) for the purpose of issuing (i) through the exercise or mandatory exercise of conversion, exchange, option, warrant or similar rights for the subscription of shares granted to shareholders or third parties in connection with bonds, notes, options warrants or other securities or contractual obligations of the Company or one of our subsidiaries or (ii) through the issuance of rights to subscribe for new shares to employees, members of the board of directors, members of the executive committee, contractors or consultants of the Company or one of our subsidiaries or other persons providing services to the Company or one of our subsidiaries (conversion or option rights); and/or

•a capital range (Kapitalband) to be utilized by the board of directors, for capital increases and/or capital reductions, as applicable, subject to the articles of association, within a period determined by the shareholders but not exceeding five years from the date of the shareholder approval. If and when adopted and approved by the general meeting of shareholders, the capital range will replace the authorized capital (genehmigtes Kapital) as currently provided for in our articles of association which expires on April 13, 2024. 

Preemptive Rights

Under Swiss corporate law, any share issue, whether for cash or non-cash consideration, is subject to the prior approval of the shareholders at a general meeting of shareholders. Shareholders have certain pre-emptive rights (Bezugsrechte) to subscribe for new issues of shares and advance subscription rights (Vorwegzeichnungsrechte) to subscribe convertible or warrant-bearing bonds or other financial market instruments in proportion to the nominal amount of shares held. A resolution adopted at a general meeting of shareholders by a majority of at least two-thirds of the votes and the majority of the nominal share capital each as represented at such a meeting, may limit or withdraw pre-emptive rights or advance subscription rights in certain circumstances. Under our articles of association, the board of directors is authorized to limit or withdraw pre-emptive rights and advance subscription rights based on the authorized share capital and the conditional share capital.

If pre-emptive rights are granted, but not exercised, the board of directors may allocate the pre-emptive rights as it elects.

With respect to our authorized share capital, which, following the entry into force of the Swiss corporate law reform, remains in full force and effect until the earlier of (i) the introduction of a capital range by the general meeting of shareholders, or (ii) the expiry of the authorized share capital on April 13, 2024, the board of directors is authorized by our articles of association to withdraw or limit the pre-emptive rights of shareholders, and to allocate them to certain shareholders and third parties if the shares are to be used:

•for the acquisition of companies, part of companies or participations, for the acquisition of products, intellectual property or licenses or for investment projects or for the financing or refinancing of such transactions through a placement of shares;

•for the purpose of broadening the shareholder constituency or in connection with a listing of shares on domestic or foreign stock exchanges;

•if the issue price of the new shares is determined by reference to the market price;

•for purposes of granting an over-allotment option (greenshoe) of up to 20% of the total number of shares in a placement or sale of shares to the respective initial purchaser or underwriters;

•following a shareholder or a group of shareholders acting in concert having accumulated shareholdings in excess of 15% of the share capital registered in the commercial register without having submitted to the other shareholders a takeover offer recommended by the board of directors;

2

•for the defense of an actual, threatened or potential takeover bid, in relation to which the board of directors, upon consultation with an independent financial advisor retained by it, has not recommended to the shareholders acceptance on the basis that the board of directors has not found the takeover bid to be financially fair to the shareholders.

The board of directors may permit pre-emptive rights that have been granted but not exercised to expire or it may place these rights respectively the shares as to which pre-emptive rights have been granted but not exercised, at market conditions or use them for other purposes in the interest of the Company. Any shares for which the granted preferential subscription rights have not been exercised will be at the disposal of the board of directors, who may sell them at market conditions or use them for other purposes in the interest of the Company.

Limits of Qualifications

Not applicable.

Registration Rights

Not applicable.

Articles of Association

Our ordinary shares have the rights and restrictions described in “Key Provisions of Our Articles of Association” below. The following summarizes the rights of holders of our ordinary shares:

•each holder of our ordinary shares is entitled to one vote per ordinary share on all matters to be voted on by shareholders generally;

•the holders of the ordinary shares shall be entitled to receive notice of, attend, speak and vote at our general meetings; and

•holders of our ordinary shares are entitled to receive such dividends as are recommended by our directors and declared by our shareholders.

Key Provisions of Our Articles of Association, Organizational Rules and Swiss Law

The following is a summary of certain important provisions of our articles of association, organizational rules and certain related provisions of Swiss law. Please note that this is only a summary and as such is not, is not intended to be and does not purport to be exhaustive. For a more complete discussion, please refer to our articles of association and organizational rules.

The articles of association contain, among other things, provisions to the following effect:

Voting Rights

Each of our shares entitles a holder to one vote. The shares are not divisible. The right to vote and the other rights of share ownership may only be exercised by shareholders (including any nominees) or usufructuaries who are entered in our share register at cut-off date determined by the board of directors. Those entitled to vote in the general meeting of shareholders may be represented by the independent proxy holder (annually elected by the general meeting of shareholders), another registered shareholder or third person with written authorization to act as proxy or the shareholder’s legal representative.

Dividends and Other Distributions

Our board of directors may propose to shareholders that a dividend or other distribution be paid but cannot itself authorize the distribution. Under our articles of association, dividend payments require a resolution passed by an absolute majority of the votes represented at a general meeting of shareholders. In addition, our auditors must confirm that the dividend proposal of our board of directors conforms to Swiss statutory law and our articles of association.

Under Swiss corporate law, we may pay dividends only if we have sufficient distributable profits brought forward from the previous business years, or if we have distributable reserves, each as evidenced by our audited stand-alone statutory balance sheet prepared pursuant to Swiss law, and after allocations to reserves required by Swiss law and

3

the articles of association have been deducted. As of January 1, 2023, our shareholders may also resolve to pay interim dividends out of profit of the current business year on the basis of interim accounts.

Distributable reserves are booked either as voluntary “retained earnings” (freiwillige Gewinnreserven), as statutory "retained earnings" (gesetzliche Gewinnreserve), as statutory capital reserves (gesetzliche Kapitalreserve) or as reserves from capital contributions (Kapitaleinlagereserven). Under the CO, if our statutory retained earnings and our statutory capital reserves amount to less than 20% of our paid-in nominal share capital recorded in the commercial register (i.e., 20% of the aggregate nominal value of our issued capital), then at least 5% of our annual profit must be retained as statutory "retained earnings". In addition, if our general reserves amount to less than 50% of our share capital, 10% of the amounts distributed beyond payment of a dividend of 5% must be retained as general reserves. The CO permits us to accrue additional voluntary reserves. Further, we are required to present the amount of the purchase price of own shares repurchased (whether by us or a subsidiary) as a negative item in equity, or as reserves for own shares, respectively, in our annual stand-alone statutory balance sheet, and such amount may not be used for dividends or subsequent repurchases. A purchase of our own shares (whether by us or a subsidiary) reduces the distributable reserves in an amount corresponding to the purchase price of such own shares. Finally, the CO under certain circumstances requires the creation of revaluation reserves which are not distributable.

Distributions out of issued share capital (i.e., the aggregate nominal value of our issued shares) are not allowed and may be made only by way of a share capital reduction. Such a capital reduction requires a resolution passed by an majority of the votes represented at a general meeting of shareholders. The resolution of the shareholders must be recorded in a public deed and a special audit report must confirm that claims of our creditors remain fully covered despite the reduction in the share capital recorded in the commercial register. Upon approval by the general meeting of shareholders of the capital reduction, the board of directors must give public notice of the capital reduction resolution in the Swiss Official Gazette of Commerce and notify creditors that they may request security by registering their claims. In this case we must secure the creditors’ claims to the extent that the previous cover has been reduced by the capital reduction, provided the creditors request us to do so within 30 days of publication in the Swiss Official Gazette of Commerce. The reduction of the share capital may be implemented only if all the requirements for reducing the share capital are met.

Uncertificated Securities

Our shares are uncertificated securities (Wertrechte, within the meaning of article 973c of the CO) and, when administered by a custodian (Verwahrungsstelle, within the meaning of the Federal Act on Intermediated Securities, or FISA), and credited to one or more securities deposit account (Effektenkonto), qualify as intermediated securities (Bucheffekten, within the meaning of the FISA). In accordance with article 973c of the CO, we maintain a non-public register of uncertificated securities (Wertrechtebuch). We may at any time without the approval of our shareholders and at our cost convert shares issued as uncertificated securities into another form (including global certificates) or convert shares issued in one form into another form. Following the entry in the share register, a shareholder may at any time request from us a written confirmation in respect of the shares held by such shareholder. Shareholders are not entitled, however, to request the printing and delivery of certificates or the conversion of the shares in one form into another form. We may print and deliver certificates for shares at any time.

Transfer of Shares and Transfer Restrictions

So long as shares are intermediated securities (Bucheffekten within the meaning of the Swiss Federal Act on Intermediated Securities, or FISA) based on uncertificated securities (Wertrechte) entered into the main register of a custodian and credited to one or more securities deposit account (Effektenkonto), (i) any transfer of shares is effected by a corresponding entry in the securities deposit account of a bank or a depository institution, (ii) no shares can be transferred by way of assignment, and (iii) a security interest in any shares cannot be granted by way of assignment.

The Company maintains its share register through areg.ch ag, an external service provider, and enters the full name, address and nationality (in the case of legal entities, the company name and registered office) of the shareholders (including nominees) and usufructuaries therein. A person entered into the share register must notify the share registrar of any change in address. Until such notification occurs, all written communication from the Company to persons entered in the share register is deemed to have been validly made if sent to the relevant address recorded in the share register.

4

Any person who acquires shares may submit an application to the Company requesting it to enter such person into the share register as a shareholder with voting rights, provided such person expressly declares to the Company that it has acquired and holds such shares in its own name and for its own account. Any such person that does not expressly state in his or her application to the Company that the relevant shares were acquired for his or her own account (any such person, a nominee) may be entered in the share register as a shareholder with voting rights for the relevant shares, provided that nominee has entered into an agreement with the Company regarding its position and is subject to a recognized banking or finance supervision.

The board of directors may, after having heard the concerned shareholder of record or nominee, cancel entries in the share register that were based on inaccurate or misleading information, or if such information becomes inaccurate or misleading, with retroactive effect to the date of the entry.

Any acquirer of shares who is not registered in the share register as a shareholder with voting rights may not vote at or participate in any general meetings of shareholders of the Company, but will still be entitled to dividends and other rights with financial value with respect to such shares.

Ownership of ADSs or Shares by Non-Swiss Residents

Except for the limitations on voting rights described above applicable to shareholders generally and the sanctions referred to below, there is no limitation under Swiss corporate law or our articles of association on the right of non-Swiss residents or nationals to own ADSs or common shares or to exercise voting rights attached to the common shares underlying the ADSs.

Foreign Investment and Exchange Control Regulations in Switzerland

Other than in connection with government sanctions imposed on certain persons from, in or related to the Republic of Iraq, Iran, Central African Republic, Yemen, Lebanon, Libya, Sudan, the Republic of South Sudan, the Republic of Mali, Burundi, the Democratic Republic of Congo, Myanmar (Burma), Somalia, Syria, Guinea, Guinea-Bissau, Zimbabwe, Belarus, the Democratic People's Republic of Korea (North Korea), Venezuela, Nicaragua, persons and organizations with a connection to Osama bin Laden, the "Al-Qaeda" group or the Taliban and certain persons in connection with the assassination of Rafik Hariri as well as measures to prevent the circumvention of international sanctions in connection with the situation in Ukraine, there are currently no governmental laws, decrees or regulations in Switzerland that restrict the export or import of capital, including, but not limited to, Swiss foreign exchange controls on the payment of dividends, interest or liquidation proceeds, if any, to non-resident holders of shares.

Annual General Meetings

Ordinary and Extraordinary General Meetings of Shareholders

The general meeting of shareholders is our supreme corporate body. Under Swiss corporate law, ordinary and extraordinary general meetings of shareholders may be held. An ordinary general meeting of shareholders must be held annually within six months after the end of a corporation’s financial year. In our case, this means on or before June 30 of any calendar year.The annual general meeting of shareholders is convened by our board of directors or, if necessary, our auditors.

An extraordinary general meeting of shareholders may be called by a resolution of the board of directors or, under certain circumstances, by our auditor, liquidator or the representatives of bondholders, if any. In addition, the board of directors is required to convene an extraordinary general meeting of shareholders if shareholders representing at least 10% of the share capital request such general meeting of shareholders in writing. Such request must set forth the items to be discussed and the proposals to be acted upon. In accordance with the Swiss corporate law reform, we intend proposing to our shareholders an amendment to our articles of association allowing shareholders who hold, alone or together, ordinary shares representing at least 5% of the share capital or the votes to request the calling of an extraordinary general meeting of shareholders.

Further, our board of directors may convene an extraordinary general meeting of shareholders and propose financial restructuring measures falling within the powers of the general meeting of shareholders if (i) we are threatened to become illiquid or (ii) based on our annual stand-alone statutory balance sheet, our assets less the liabilities no

5

longer cover half of the sum of the share capital, the statutory capital reserve not to be repaid to the shareholders and the statutory retained earnings.

Powers

Under Swiss corporate law, the following powers are vested exclusively in the general meeting of shareholders:

•adoption and amendment of our articles of association;

•election of the members of the board of directors, the chairperson of the board of directors, the members of the nomination and compensation committee, the independent voting rights representative and the auditors;

•approval of the annual management report and the consolidated financial statements;

•approval of the annual financial statements and decision on the allocation of profits shown on the balance sheet, in particular with regard to dividends;

•the determination of interim dividends and the approval of the interim financial statements required for this purpose;

•the resolution on the repayment of the statutory capital reserve;

•approval of the compensation of the board of directors and of the executive management pursuant to article 28 of our articles of association;

•granting discharge to the members of the board of directors and the persons entrusted with the executive management;

•the delisting of the Company's equity securities; and

•passing of resolutions as to all matters reserved by law or under our articles of association to the authority of the general meeting of shareholders.

Voting and Quorum Requirements

Shareholder resolutions and elections (including elections of members of the board of directors) require the affirmative vote of the majority of the votes represented at the general meeting of shareholders, unless otherwise stipulated by law or our articles of association.

Under Swiss corporate law and our articles of association, a resolution of the general meeting of the shareholders passed by two-thirds of the votes represented at the meeting, and the majority of the nominal value of the shares represented is required for:

•the amendment or modification of the purpose of the company;

•the combination of shares (reverse share split);

•the creation of shares with privileged voting rights;

•the restriction on the transferability of shares and the cancellation of such restriction;

•the introduction of conditional share capital or the introduction of a capital range;

•an increase of the share capital through the conversion of capital surplus, through contribution in kind, by set-off against a claim or the granting of special privileges;

•the limitation or withdrawal of pre-emptive rights;

•the introduction of the casting vote of the acting chair in the general meeting of shareholders ;

•the delisting of the Company's equity securities;

•the relocation of the registered office of the company;

•the relocation of the place of incorporation of the company;

•the introduction of an arbitration clause in the articles of association; and

•the dissolution of the company.

As a rule, the same voting requirements apply to resolutions regarding transactions among corporations based on Switzerland’s Federal Act on Mergers, Demergers, Transformations and the Transfer of Assets of 2003, as amended, or the Swiss Merger Act (including a merger, demerger or conversion of a corporation). See “—Compulsory Acquisitions; Appraisal Rights.”

6

In accordance with Swiss corporate law and generally accepted business practices, our articles of association do not provide for quorum requirements generally applicable to general meetings of shareholders. To this extent, our practice varies from the requirement of Nasdaq Listing Rule 5620(c), which requires an issuer to provide in its bylaws for a generally applicable quorum, and that such quorum may not be less than one-third of the outstanding voting shares.

Notice

Pursuant to Swiss corporate law and our articles of association, general meetings of shareholders must be convened by the board of directors at least twenty days before the date of the meeting. The general meeting of shareholders is convened by way of a notice appearing in our official publication medium, currently the Swiss Official Gazette of Commerce. Registered shareholders may also be informed by mail. The notice of a general meeting of shareholders must state the date, the starting time, the form and the location of the general meeting, the items on the agenda, the proposals to be acted upon and short explanations for these proposals, in case of elections, the names of the nominated candidates and if applicable, the shareholders' motions with a short explanation and/or the name and address of the independent voting representative. Except in the limited circumstances listed below, a resolution may not be passed at a general meeting without proper notice.

Pursuant to Swiss corporate law, our annual report, the compensation report and the auditors' reports must be made available electronically to the shareholders at least 20 days prior to the annual general meeting of shareholders.

The owners or representatives of all of our shares may, if no objection is raised, hold a general meeting of shareholders without complying with the formal requirements for convening general meetings of shareholders (a universal meeting). This universal meeting of shareholders may discuss and pass binding resolutions on all matters within the purview of the ordinary general meeting of shareholders, provided that the owners or representatives of all the shares are present at the meetingof shareholders, specifying the agenda item and the proposal or proposals.

Agenda Requests

Pursuant to our articles of association, one or more shareholders whose combined shareholdings represent the lower of (1) one tenth of the share capital or (2) an aggregate nominal value of at least CHF 1,000,000, may request that an item be included on the agenda for a general meeting of shareholders. To be timely, the shareholder’s request must be received by us at least 45 calendar days in advance of the meeting.

In accordance with the Swiss corporate law reform, we intend proposing to our shareholders an amendment to our articles of association allowing shareholders who hold alone or together ordinary shares representing at least 0.5% of the share capital or the votes to request that an item be included on the agenda or a proposal relating to an agenda item be included in the notice convening a general meeting of shareholders.

Shareholder Proposals

Under Swiss corporate law, at any general meeting of shareholders any shareholder may put proposals to the meeting if the proposal is part of an agenda item. In addition, even if the proposal is not part of any agenda item, any shareholder may propose to the meeting to convene an extraordinary general meeting of shareholders or to have a specific matter investigated by means of a special investigation where this is necessary for the proper exercise of shareholders’ rights.

Number of Directors

Our articles of association provide that our board of directors shall consist of a minimum of three members and a maximum of eleven members.

The members of our board of directors and the chairperson are elected annually by the general meeting of shareholders for a term of office until completion of the next annual general meeting of shareholders and are eligible for re-election. Each member of our board of directors must be elected individually.

7

Powers

According to Swiss corporate law, the board of directors has the following non-delegable and inalienable powers and duties:

•the ultimate direction of the business of the company and the issuance of the necessary instructions;

•the determination of the organization of the company;

•the administration of accounting, financial control and financial planning;

•the appointment and removal of the persons entrusted with executive management and their representation of the company;

•the ultimate supervision of the persons entrusted with management of the company, specifically in view of their compliance with the law, these articles of association, the regulations and directives;

•the preparation of the business report and the compensation report and;

•thre preparation of the general meetings of shareholders as well as the implementation of the resolutions adopted by the general meetings of shareholders;

•the adoption of resolutions regarding the subsequent payment of capital with respect to non-fully paid up shares and the amendments to the articles of association related thereto;

•the adoption of resolutions on the change of the share capital to the extent that such power is vested in the board of directors, the ascertainment of capital changes the preparation of the report on the capital increase, and the respective amendments of the articles of association (including deletions);

•the non-delegable and inalienable duties and powers of the board of directors pursuant to the Merger Act;

•the submission of a petition for debt restructuring moratorium and the notification of the court if liabilities exceed assets; and

•any other matter reserved to the board of directors by the law or the articles of association.

The board of directors may, while retaining such non-delegable and inalienable powers and duties, delegate some of its powers, in particular direct management, to a single or to several of its members, managing directors, committees or to third parties who need be neither members of the board of directors nor shareholders. Pursuant to Swiss corporate law, details of the delegation must be set in the organizational rules issued by the board of directors. The organizational rules may also contain other procedural rules such as quorum requirements.

Indemnification of Executive Management and Directors

In addition, under general principles of Swiss employment law, an employer may be required to indemnify an employee against losses and expenses incurred by such employee in the proper execution of his or her duties under the employment agreement with the employer.

We intend to enter into indemnification agreements with each of the members of our board of directors and executive management.

Conflict of Interest, Management Transactions

Swiss corporate law provides that all members of the board of directors and of the executive committee must inform the board of directors without delay of any conflicts of interest. In such an event, the board of directors has to take such measures as are necessary to safeguard the company's interests. Further, the CO contains a provision that requires our directors and executive management to safeguard the company’s interests and imposes a duty of loyalty and duty of care on our directors and executive management. This rule is generally understood to disqualify directors and executive management from participation in decisions that directly affect them. Our directors and executive officers are personally liable to us for breach of these provisions. In addition, Swiss law contains provisions under which directors and all persons engaged in the company’s management are liable to the company, each shareholder and the company’s creditors for damages caused by an intentional or negligent violation of their duties. Furthermore, Swiss corporate law contains a provision under which payments made to any of the company’s shareholders or directors, executive officers or members of the advisory board (if any) or any person associated with any such person, other than payments made at arm’s length, must be repaid to the company if such person, or associated person acted in bad faith.

Our Code of Conduct and organizational rules also cover a broad range of matters, including the handling of conflicts of interest.

8

Principles of the Compensation of the Board of Directors and the Executive Management

Pursuant to Swiss corporate law, the company is subject to certain rules related to the compensation of the members of the board of directors and of the executive committee applicable to listed companies.

Pursuant to Swiss corporate law, our shareholders must annually approve the compensation of the board of directors and the persons whom the board of directors has, fully or partially, entrusted with our management, which we refer to as our “executive management”. The board of directors is responsible for the annual preparation of a written compensation report in accordance with Swiss corporate law. Our statutory auditor conducts an audit of the compensation report as required by Swiss law and Swiss auditing standards. The compensation report must disclose all compensation, loans and other forms of indebtedness granted by us, directly or indirectly, to current or former members of the board of directors and executive management to the extent related to their former role or not on customary market terms.

The disclosure concerning compensation, loans and other forms of indebtedness must include:

•the aggregate amount for the board of directors as well as the particular amount for each member of the board of directors, specifying the name and function of each respective person; and

•the aggregate amount for the executive management as well as the particular amount for the member of the executive management with the highest compensation, specifying the name and function of such member.

Certain forms of compensation are prohibited for members of our board of directors and executive management, such as:

•severance payments provided for either contractually or in the articles of association (compensation due during the notice period before termination of a contractual relationship does not qualify as severance payment);

•compensation related to a non-competition undertaking that exceeds the average remuneration for the last three financial years, or compensation related to a non-competition undertaking that is not justified on business grounds;

•advance compensation;

•incentive fees for the acquisition or transfer of corporations or parts thereof by us or by companies being, directly or indirectly, controlled by the us;

•loans, other forms of indebtedness, pension benefits not based on occupational pension schemes and performance-based compensation not provided for in the articles of association; and

•equity securities and conversion and option rights awards not provided for in the articles of association.

Compensation to members of the board of directors and executive management for activities in entities that are, directly or indirectly, controlled by us is prohibited if the compensation (1) would have been prohibited if it was paid directly by us, (2) is not provided for in our articles of association and (3) has not been approved by the general meeting of shareholders.

Our shareholders annually vote on the proposals of the board of directors with respect to:

•the maximum aggregate amount of compensation of the board of directors until the next annual general meeting; and

•the maximum aggregate amount of (1) fixed compensation of the executive management for the period from July 1 of a given year to June 30 of the following year and (2) variable compensation of the executive management for the current financial year.

The board of directors may submit for approval at the general meeting of shareholders deviating or additional proposals relating to the same or different periods.

If the general meeting of shareholders does not approve a compensation proposal made by the board of directors, the board of directors must convene an extraordinary general meeting and submit a new compensation proposal to such meeting.

In addition to fixed compensation, members of the executive management and, under certain circumstances, the board of directors may be paid variable compensation, depending on the achievement of certain performance criteria or for retention purposes.

9

The performance criteria may include corporate targets and targets in relation to the market, other companies or comparable benchmarks and individual targets, taking into account the position and level of responsibility of the recipient of the variable compensation. The board of directors or, where delegated to it, the compensation committee shall determine the relative weight of the performance criteria and the respective target values.

Compensation may be paid or granted in the form of cash, shares, financial instruments, or in the form of other types of benefits. The board of directors or, where delegated to it, the compensation committee shall determine grant, vesting, exercise and forfeiture conditions.

Borrowing Powers

Neither Swiss law nor our articles of association restrict in any way our power to borrow and raise funds. The decision to borrow funds is made by or under the direction of our board of directors, and no approval by the shareholders is required in relation to any such borrowing.

Repurchases of Shares and Purchases of Own Shares

The CO limits our right to purchase and hold our own shares. We and our subsidiaries may purchase shares only if and to the extent that (1) we have freely distributable reserves in the amount of the purchase price; and (2) the aggregate nominal value of all shares held by us does not exceed 10% of our share capital. Pursuant to Swiss corporate law, where shares are acquired in connection with a transfer restriction set out in the articles of association, the foregoing upper limit is 20%. We currently do not have any transfer restriction in our articles of association. If we own shares that exceed the threshold of 10% of our share capital, the excess must be sold or cancelled by means of a capital reduction within two years.

Shares held by us or our subsidiaries are not entitled to vote at the general meeting of shareholders but are entitled to the economic benefits applicable to the shares generally, including dividends and pre-emptive rights in the case of share capital increases.

In addition, selective share repurchases are only permitted under certain circumstances. Within these limitations, as is customary for Swiss corporations, we may purchase and sell our own shares from time to time in order to meet our obligations under our equity plans, to meet imbalances of supply and demand, to provide liquidity and to even out variances in the market price of shares.

Notification and Disclosure of Substantial Share Interests

The disclosure obligations generally applicable to shareholders of Swiss corporations under the Federal Act on Financial Market Infrastructures and Market Conduct in Securities and Derivatives Trading of 2015, or the Financial Market Infrastructure Act, are applicable to us. Under the Financial Market Infrastructure Act, persons who directly, indirectly or in concert with other parties acquire or dispose of common shares or are granted the power to exercise voting rights attached to common shares at their own discretion, or delegated voting rights, or acquire or dispose of purchase or sale rights relating to common shares, and thereby reach, exceed or fall below a threshold of 3, 5, 10, 15, 20, 25, 33 1⁄3, 50 or 66 2⁄3 percent of our voting rights (whether exercisable or not) must report such acquisition or disposal to us and the SIX Swiss Exchange in writing within four trading days. Within two trading days of the receipt of such notification, we must publish such information through SIX Swiss Exchange's electronic reporting and publishing platform. For purposes of calculating whether a threshold has been reached or crossed, shares, delegated voting rights and acquisition rights or obligations, or Acquisition Positions, on the one hand and sale rights or obligations, or Disposal Positions, on the other hand may not be netted. Rather the Acquisition Positions and the Disposal Positions need to be accounted for separately and may each trigger disclosure obligations if the respective positions reach one of the thresholds. In addition, actual share ownership and delegated voting rights must be reported separately from other Purchase Positions if they reach one of the thresholds.

Mandatory Bid Rules

Pursuant to the applicable provisions of the Financial Market Infrastructure Act, any person that acquires shares of a listed Swiss company, whether directly or indirectly or acting in concert with third parties, which shares, when taken

10

together with any other shares of such company held by such person, exceed the threshold of 33 1/3% of the voting rights (whether exercisable or not) of such company, must make a takeover bid to acquire all the other listed shares of such company. A company’s articles of association may either eliminate this provision of the Financial Market Infrastructure Act or may raise the relevant threshold to 49%, opting-out or opting-up, respectively. Our articles of association do not contain any opting-out or opting-up provision.

A waiver of the mandatory rules may be granted by the Swiss Takeover Board or FINMA under certain circumstances. If no waiver is granted, the mandatory takeover bid must be made pursuant to the procedural rules set forth in the Financial Market Infrastructure Act and the implementing ordinances thereunder.

There is no obligation to make a takeover bid under the Financial Market Infrastructure Act if the voting rights in question are acquired as a result of a gift, succession or partition of an estate, a transfer based upon matrimonial property law or execution proceedings.

Limitation of Liability and Indemnification

Insofar as indemnification for liabilities arising under the Securities Act may be permitted to our directors, officers or persons controlling us pursuant to the foregoing provisions, we have been informed that in the opinion of the SEC such indemnification is against public policy as expressed in the Securities Act and is therefore unenforceable.

Differences in Corporate Law

We are a corporation (Aktiengesellschaft), organized under the laws of Switzerland in accordance with articles 620 et seqq. CO. The laws applicable to a Swiss Aktiengesellschaft differ from laws applicable to U.S. corporations and their shareholders. The following discussion summarizes material differences between the rights of holders of our common shares and the rights of holders of the common shares of a typical corporation incorporated under the laws of the state of Delaware, which result from differences in governing documents and the laws of Switzerland and Delaware. For a more complete discussion, please refer to the Delaware General Corporation Law, or the DGCL, Swiss law, and our governing corporate statutes.

11

Switzerland	Delaware
Number of Directors
Under Swiss corporate law, the board of directors must consist of at least one member, unless the articles of association set out a specific number of directors. Our articles of association provide that our board of directors shall consist of a minimum of three members and a maximum of eleven members.	Under the DGCL, a corporation must have at least one director and the number of directors shall be fixed by or in the manner provided in the bylaws, unless the certificate of incorporation fixes the number of directors, in which case a change in the number of directors shall be made only by amendment of the certificate of incorporation.
Director Qualifications
Any natural person can be elected as a member of the board of directors even without being a shareholder of the corporation. As a minimum standard a director has to be in the position to fulfill his or her fiduciary duties, the duty of care and the duty of loyalty. It lies within the competence of the board of directors to determine a set of qualifications when proposing potential candidates to the general meeting of shareholders for election, or the articles of association may set out guidelines. While our articles of association generally do not set out such guidelines, our organizational regulations and committee charters stipulate certain requirements as to independence and, with respect to the audit and finance committee, financial literacy. Further, the corporation must be able to be represented by one person who is resident in Switzerland with sole signature authority or two persons who are resident in Switzerland with joint signature authority by two. This person or these persons may be either a member of the board of directors or an executive officer. They must have access to the share register and the register of beneficial owners notified to the company.	Under the DGCL, a corporation may prescribe qualifications for directors under its certificate of incorporation or bylaws.

12

Standard of Conduct for Directors

A director of a Swiss corporation has a fiduciary duty to the corporation only. This duty has two components: •the duty of care; and •the duty of loyalty. The duty of care requires that a director acts in good faith, with the care that an ordinary prudent director would exercise under similar circumstances. The duty of loyalty requires that a director acts in a manner he or she reasonably believes to be in the best interest of the corporation. He or she must not use his or her corporate position for personal gain or advantage. This duty prohibits in principle self-dealing by a director and mandates that the best interest of the corporation take precedence over a director’s interest. Directors must afford the shareholders equal treatment in equal circumstances. The burden of proof for a violation of these duties is with the corporation or with the shareholder (or creditor) bringing a suit against the director. The Swiss Federal Supreme Court established the doctrine to restrict its review of a business decision if the decision has been taken upon proper preparation, on an informed basis and without conflicts of interest.

The DGCL does not contain specific provisions setting forth the standard of conduct of a director. The scope of the fiduciary duties of directors is generally determined by the courts of the State of Delaware. In general, directors have a duty to act without self-interest, on a well-informed basis and in a manner they reasonably believe to be in the best interest of the stockholders.

13

Indemnification of Directors and Executive Committee and Limitation of Liability

Under Swiss corporate law, a corporation cannot limit the personal liability of a director or another person entrusted with its management. However, the general meeting of shareholders may grant discharge to the directors and the persons entrusted with its management from liability arising from actions taken during the past financial year. Such discharge is effective only, however, for disclosed facts and only against the corporation and those shareholders who approved the discharge or who have since acquired shares in full knowledge of the discharge. Under Swiss corporate law, subject to certain limitations, a corporation may indemnify and hold harmless directors and other persons entrusted with its management out of the assets of the corporation from and against actions, costs, charges, losses, damages and expenses which they or any of them may incur or sustain by or by reason of any act done, concurred in or omitted, in connection with the execution of their statutory duties, provided that such indemnity (if any) shall not extend to any matter in which any of said persons is found to have committed an intentional or grossly negligent breach of his or her duties. Subject to the limitations described above, the articles of association of a Swiss corporation may therefore provide that the corporation shall indemnify and hold harmless to the extent permitted by law the directors and members of the executive committee out of assets of the corporation against threatened, pending or completed actions. Within the same limitations, articles of association of a Swiss corporation may also provide that the directors shall be entitled to the reimbursement of all expenses incurred in the interests of the corporation. Our articles of association contain such a provision. Further, a corporation may enter into and pay for directors’ and officers’ liability insurance which may cover negligent acts as well.

Under the DGCL, a corporation’s certificate of incorporation may include a provision eliminating or limiting the personal liability of a director to the corporation or its shareholders for monetary damages arising from a breach of fiduciary duty as a director, provided that such provision shall not eliminate or limit the liability of a director for: •any breach of the director’s duty of loyalty to the corporation or its shareholders; •acts or omissions not in good faith or that involve intentional misconduct or a knowing violation of law; •intentional or negligent payment of unlawful dividends or unlawful share purchases or redemptions; or •any transaction from which the director derives an improper personal benefit. A Delaware corporation may indemnify any person who was or is a party or is threatened to be made a party to any proceeding, other than an action by or on behalf of the corporation, because the person is or was a director or officer, against liability incurred in connection with the proceeding if the director or officer acted in good faith and in a manner reasonably believed to be in, or not opposed to, the best interests of the corporation; and the director or officer, with respect to any criminal action or proceeding, had no reasonable cause to believe his or her conduct was unlawful. Unless ordered by a court, any foregoing indemnification is subject to a determination that the director or officer has met the applicable standard of conduct: •by a majority vote of the directors who are not parties to the proceeding, even though less than a quorum; •by a committee of directors designated by a majority vote of the eligible directors, even though less than a quorum; •by independent legal counsel in a written opinion if there are no eligible directors, or if the eligible directors so direct; or •by the shareholders. Moreover, a Delaware corporation may not indemnify a director or officer in connection with any proceeding in which the director or officer has been adjudged to be liable to the corporation unless and only to the extent that the court determines that, despite the adjudication of liability but in view of all the circumstances of the case, the director or officer is fairly and reasonably entitled to indemnity for those expenses which the court deems proper.

14

Annual Vote on Board Renewal
The general meeting of shareholders elects annually and individually the members of the board of directors, the chairperson of the board of directors and the members of the compensation committee for a term of office until completion of the next annual general meeting of shareholders. Re-election is possible. One-year terms are mandatory under Swiss corporate law for listed companies. Classified boards are therefore not permitted. Cumulative voting is not permitted under Swiss corporate law. Our directors, the chairperson of the board of directors and the members of the compensation committee are elected by the affirmative vote of the absolute majority of the votes represented at the general meeting of shareholders.	Unless directors are elected by written consent in lieu of an annual meeting, directors are elected in an annual meeting of shareholders on a date and at a time designated by or in the manner provided in the bylaws. Re-election is possible. Classified boards are permitted. Cumulative voting for elections of directors is not permitted unless the corporation’s certificate of incorporation provides for it.
Removal of Directors
The general meeting of shareholders may remove, with or without cause, any director at any time with a resolution passed by an absolute majority of the votes represented at a general meeting of shareholders where a proposal for such removal was properly set on the agenda. The articles of association may require the approval by a qualified majority of the shares represented at a meeting for the removal of a director.		Under the DGCL, directors may be removed from office, with or without cause, by a majority stockholder vote, though in the case of a corporation whose board is classified, unless otherwise provided in the certificate of incorporation, stockholders may effect such removal only for cause.
Vacancies on the Board of Directors
In order to fill a vacancy on the board of directors, a new member of the board of directors must be elected by a general meeting of shareholders. In the event the office of the chairperson of the board of directors is vacant, the board of directors shall appoint a new chairperson from among its members for the remaining term of office. If there are vacancies on the compensation committee, the board of directors may appoint substitute members from among its members for the remaining term of office. The articles of association may set forth other rules to fill vacancies on the compensation committee. Our articles of association do not stipulate such other rules.		Under the DGCL, unless otherwise provided in the certificate of incorporation or bylaws, a vacancy or a newly created directorship may be filled by a majority of the directors then in office, although less than a quorum, or by the sole remaining director. Any newly elected director usually holds office for the remainder of the full term expiring at the annual meeting of shareholders at which the term of the class of directors to which the newly elected director has been elected expires.

15

Annual General Meeting or Special Meetings
The annual general meeting of shareholders must take place annually within six months after the close of the financial year. Amongst other competences, the general meeting of shareholders individually elects the members of the board of directors, the chairperson of the board of directors and the members of the compensation committee. The notice of convening the meeting must include the place and date of the general meeting, the agenda items, the proposals by the board of directors and shareholders (if any), and necessary directions and instructions by the board of the directors. Extraordinary general meetings of shareholders shall be called as often as necessary by the board of directors or, if necessary, by the statutory auditors as well as in all other cases required by law. One or more shareholders holding, alone or together, ordinary shares representing at least 5% of the share capital or of the votes may request in writing that the board of directors call an extraordinary general meeting of shareholders. The request must contain an agenda and the suggested proposals.	Under the DGCL, the annual meeting of stockholders shall be held at such place, on such date and at such time as may be provided by the certificate of incorporation or by the bylaws, or by the board of directors if neither the certificate of incorporation or bylaws so provide. Under the DGCL, unless directors are elected by written consent in lieu of an annual meeting as permitted by the DGCL, the annual meeting of stockholders shall be held for the election of directors on a date and at a time as designated by or in the manner provided in the bylaws. Under the DGCL, special meetings of the stockholders may be called by the board of directors or by such person or persons as may be authorized by the certificate of incorporation or by the bylaws.
Shareholder Proposals
At any general meeting of shareholders any shareholder may put proposals to the meeting if the proposal is part of an agenda item. Generally, no resolution may be passed on proposals relating to agenda items that were not duly notified. Pursuant to our articles of association, one or more shareholders whose combined shareholdings represent the lower of (1) one tenth of the share capital or (2) an aggregate nominal value of at least CHF 1,000,000, may request that an item be included on the agenda for a scheduled general meeting of shareholders provided such request is made with appropriate notice. Our articles of association provide that such request must be made at least 45 calendar days prior to a general meeting of shareholders specifying the agenda item and the proposal or proposals. In accordance with the Swiss corporate law reform, we intend proposing to our shareholders an amendment to our articles of association allowing shareholders who hold, alone or together, ordinary shares representing at least 0,5 % of the share capital or the votes to request that an item be included on the agenda or a proposal relating to an agenda item be included in the notice convening a general meeting of shareholders. In addition, any shareholder is entitled, at a general meeting of shareholders and without advance notice, to (i) request information from the board of directors on the affairs of the company (note, however, that the right to obtain such information is limited), (ii) request information from the statutory auditors on the methods and results of their audit, (iii) propose that an extraordinary general meeting of shareholders be called or (iv) propose that a special investigation be carried out.	Under the DGCL, special meetings of the stockholders may be called by the board of directors or by such person or persons as may be authorized by the certificate of incorporation or by the bylaws. A stockholder of a Delaware corporation has the right to put any proposal before the annual meeting of stockholders, provided it complies with the notice provisions in the governing documents. A special meeting may be called by the board of directors or any other person authorized to do so in the governing documents, but stockholders may be precluded from calling special meetings.

16

Notice of General Meetings
Under Swiss corporate law and our articles of association, notice of the general meeting of shareholders has to be given at least 20 calendar days before the date for which the meeting is scheduled in the form prescribed by the articles of association. The agenda must specify the place, date, hour, agenda items, and the proposals of the board of directors and short explanations for these proposals, if applicable, the proposals of the shareholders who have requested that a general meeting be called or an item be placed on the agenda (if any) with a short explanation and if applicable, the address of the independent voting representative. Our annual report, the compensation report and the auditors' reports must be made available electronically to the shareholders at least 20 days prior to the annual general meeting of shareholders.	Under Delaware law, unless otherwise provided in the certificate of incorporation or bylaws, written notice of any meeting of the stockholders must be given to each stockholder entitled to vote at the meeting not less than 10 nor more than 60 days before the date of the meeting and shall specify the place, date, hour and purpose or purposes of the meeting.
Proxy
Swiss law requires that the independent proxy must be present at a general meeting of shareholders. Registered shareholders may give proxy and voting instructions to the independent proxy in writing or electronically. Pursuant to our articles of association, registered shareholders may also give proxy to a representative of their choice.	Under the DGCL, each shareholder entitled to vote at a meeting of shareholders or to express consent or dissent to corporate action in writing without a meeting may authorize another person or persons to act for such shareholders by proxy, but no such proxy shall be voted or acted upon after three years from its date, unless the proxy provides for a longer period.
Shareholder Action by Written Consent
As of January 1, 2023, shareholders of a Swiss corporation may also act by written consents if no shareholder or representative of a shareholder requests an oral debate. Shareholders of record may vote at the general meeting of shareholders through proxy and related instructions (“—Proxy”).	Under the DGCL a corporation’s certificate of incorporation (1) may permit shareholders to act by written consent if such action is signed by all shareholders, (2) may permit shareholders to act by written consent signed by shareholders having the minimum number of votes that would be necessary to take such action at a meeting or (3) may prohibit actions by written consent. Unless otherwise provided in the certificate of incorporation, any action that is required by the DGCL to be, or that can be, taken at an annual or special meeting of the shareholders may be taken without a meeting, without prior notice and without a vote, if written consent to the action is signed by the holders of outstanding shares having not less than the minimum number of votes necessary to authorize or take the action at a meeting at which all shares entitled to vote thereon were present and voted.

17

Pre-emptive Rights
Under Swiss corporate law, shareholders have pre-emptive rights to subscribe for newly issued shares and advance subscription rights to subscribe for warrants, convertible bonds or similar debt/finance instruments with option or conversion rights. Under certain circumstances, shareholders may limit or withdraw, or authorize the board of directors to limit or withdraw, pre-emptive rights or advance subscription rights. However, the shareholders’ pre-emptive rights or advance subscription rights can only be limited or withdrawn for valid reasons. Preventing a particular shareholder to exercise influence over the company is generally believed not to be a valid reason to limit or withdraw shareholders’ pre-emptive rights.	Under the DGCL, no shareholder shall have any pre-emptive right to subscribe to an additional issue of shares or to any security convertible into such shares unless, and except to the extent that, such right is expressly granted to such shareholder in the corporation’s certificate of incorporation.
Sources of Dividends
Dividend payments are subject to the approval of the general meeting of shareholders. The board of directors may propose to shareholders that a dividend be paid but cannot itself authorize the distribution. Payments out of share capital of a Swiss corporation (in other words, the aggregate nominal value of the corporation’s registered share capital) in the form of dividends are not allowed; however, payments out of share capital may be made by way of a capital reduction. Dividends may be paid only from the profits brought forward from the previous financial years or if the corporation has distributable reserves, each as will be presented on the corporation’s audited stand-alone statutory balance sheet. The dividend may be determined only after the allocations to reserves required by Swiss law or the articles of association have been deducted and the corporation’s statutory auditors have confirmed that the dividend proposal complies with Swiss law and the corporation’s articles of association. As of January 1, 2023, our shareholders may also resolve to pay interim dividends out of profit of the current business year on the basis of interim accounts.	Under the DGCL, subject to any restrictions contained in the certificate of incorporation, the directors of a corporation may declare and pay dividends upon the shares of its capital stock either (1) out of its surplus or (2) if there is no surplus, out of its net profits for the fiscal year in which the dividend is declared and/or the preceding fiscal year, except when the capital of the corporation is diminished by depreciation in the value of its property, or by losses, or otherwise, to an amount less than the aggregate amount of capital represented by the issued and outstanding shares of all classes having a preference on the distribution of assets. “Surplus” is defined in the DGCL as the excess of the net assets of the corporation over capital, as such capital may be adjusted by the board of directors.

18

Repurchase of Shares

A Swiss corporation (or its subsidiaries) may repurchase its own shares under the following conditions: •it can only repurchase its own shares out of freely disposable equity capital in the required amount; •the combined value of all such shares cannot exceed 10% of the share capital. Where shares are acquired in connection with a transfer restriction set out in the articles of association, the foregoing upper limit is 20%; •the voting rights on the corporation’s own shares are suspended; and •the amount of the purchase price for the shares repurchased is presented on its stand-alone statutory balance sheet as a negative item in its equity.

Under the DGCL, a corporation may generally purchase or redeem shares of its stock; provided, however, that no corporation shall purchase or redeem its own shares of capital stock if the capital of the corporation is impaired or such redemption or repurchase would impair the capital of the corporation, except that a corporation may purchase or redeem out of capital any of its own shares which are entitled upon any distribution of its assets to a preference over another class or series of its shares, or, if no shares entitled to such a preference are outstanding, any of its own shares, if such shares will be retired upon their acquisition and the capital of the corporation reduced in accordance with the DGCL.

19

Voting Rights and Transfer Restrictions

Each common share carries one vote at any general meeting of shareholders. A shareholder must be registered in the corporation’s share register as a shareholder with voting rights in order to exercise his, her or its voting rights. The articles of association may restrict the registration of a shareholder in the corporation’s share register in order to ensure that no person or entity is registered as a shareholder with voting rights for more than a certain percentage, and that no person or entity directly or indirectly, formally, constructively or beneficially owns, or otherwise controls or directs voting rights (whether exercisable or not) with respect to a certain percentage of the share capital registered in the Commercial Register. Furthermore, a corporation may under certain circumstances refuse to enter an acquirer of shares in the share register as a shareholder with voting rights if such acquirer fails to declare to the corporation that the relevant shares were acquired for his, her or its own account. See “Limitations Affecting Shareholders of a Swiss Company—Transfer of Shares and Transfer Restrictions”. Further, the articles of association may provide that no shareholder may exercise, directly or indirectly, voting rights with respect to own or represented shares in excess of a certain percentage of the share capital registered in the Commercial Register. The articles of association of a Swiss corporation may, subject to certain limitations, provide for shares with preferred voting rights. Our current articles of association do not contain such a provision.

Under the DGCL, unless otherwise provided in the certificate of incorporation, each shareholder is entitled to one vote for each share of capital stock held by such shareholder.

20

Shareholder Vote on Certain Transactions
Under Swiss corporate law, with certain exceptions, a merger or a demerger of the corporation pursuant to the Swiss Merger Act or a sale of all or substantially all of the assets of a corporation must be approved by two-thirds of the votes represented at the respective general meeting of shareholders as well as the absolute majority of the nominal value of shares represented at such meeting. The articles of association may increase the voting threshold (which is not the case under our articles of association). Swiss law also requires that if the merger agreement provides only for a compensation payment, at least 90% of all members in the transferring legal entity who are entitled to vote shall approve the merger agreement. However, there has been some uncertainty and dispute as to whether the 90% approval requirement relates to the total number of votes represented by all shares of the target company outstanding, or the total number of shareholders of the target company entitled to vote. Swiss law also provides that a parent corporation, by resolution of its board of directors, may merge with any subsidiary of which it owns at least 90% of the shares without a shareholder vote by shareholders of such subsidiary if the shareholders of the subsidiary are offered the payment of the fair value in cash as an alternative to shares of the parent.	Under the DGCL, certain fundamental changes such as amendments to the certificate of incorporation, a merger, consolidation, sale, lease, exchange or other disposition of all or substantially all of the property of a corporation not in the usual and regular course of the corporation’s business, or a dissolution of the corporation, are generally required to be approved by the holders of a majority of the outstanding shares entitled to vote on the matter, unless the certificate of incorporation requires a higher percentage. However, under the DGCL, mergers in which less than 20% of a corporation’s shares outstanding immediately prior to the effective date of the merger is issued generally do not require shareholder approval. In addition, mergers in which one corporation owns 90% or more of each class of shares of a second corporation may be completed without the vote of the second corporation’s board of directors or shareholders. In certain situations, the approval of a business combination may require approval by a certain number of the holders of a class or series of shares. In addition, Section 251(h) of the DGCL provides that shareholders of a constituent corporation need not vote to approve a merger if: (i) the merger agreement permits or requires the merger to be effected under Section 251(h) and provides that the merger shall be effected as soon as practicable following the tender offer or exchange offer, (ii) a corporation consummates a tender or exchange offer for any and all of the outstanding shares of such constituent corporation that would otherwise be entitled to vote to approve the merger, (iii) following the consummation of the offer, the stock accepted for purchase or exchanges plus the stock owned by the consummating corporation equals at least the percentage of stock that would be required to adopt the agreement of merger under the DGCL, (iv) the corporation consummating the offer merges with or into such constituent corporation, and (v) each outstanding share of each class or series of stock of the constituent corporation that was the subject of and not irrevocably accepted for purchase or exchange in the offer is to be converted in the merger into, or the right to receive, the same consideration to be paid for the shares of such class or series of stock of the constituent corporation irrevocably purchased or exchanged in such offer.
Shareholder Vote on Board and Management Compensation
Pursuant to the Compensation Ordinance, the aggregate amount of compensation for the members of the board of directors and the executive committee must be approved by the general meeting of shareholders.	Under the DGCL, the board of directors has the authority to fix the compensation of directors, unless otherwise restricted by the certificate of incorporation or bylaws.

21

Dissenters’ Appraisal Rights

For business combinations effected in the form of a statutory merger or demerger, the Swiss Merger Act provides that if the equity rights have not been adequately preserved or compensation payments in the transaction are not adequate, a shareholder may request the competent court to determine an adequate amount of compensation. Shareholders who consider their equity rights not to have been adequately preserved or the compensation received to be inadequate are entitled to exercise appraisal rights in accordance with the Swiss Merger Act by filing a suit against the surviving corporation with the competent Swiss civil court at the registered office of the surviving corporation or of the transferring corporation. The suit must be filed within two months after the merger or demerger resolution has been published in the Swiss Official Gazette of Commerce. If such a suit is filed, the court must assess whether the equity rights have been adequately preserved or the compensation paid or to be paid to the shareholders of the transferring corporation is adequate and, should the court consider it to be inadequate, determine any additional adequate compensation. A decision issued by a competent court in this respect can be acted upon by any person who has the same legal status as the claimant. The filing of an appraisal suit will not prevent completion of the merger or demerger.

Under the DGCL, any shareholder of a corporation who holds share of stock on the date of making a demand for appraisal of such shareholder’s shares under the DGCL, who continuously holds such shares through the effective date of a merger or consolidation, who has neither voted in favor of the merger or consolidation nor consented thereto shall be entitled to an appraisal by the Delaware Court of Chancery of the fair value of the shareholder’s shares of stock; provided, however, that no appraisal rights are available for shares of any class or series that is listed on a national securities exchange or held of record by more than 2,000 shareholders, unless the agreement of merger or consolidation requires the holders to accept for their shares anything other than: •shares of stock of the surviving corporation; •shares of stock of another corporation that are either listed on a national securities exchange or held of record by more than 2,000 shareholders; •cash in lieu of fractional shares of the stock described in the two preceding bullet points; or • any combination of the above. Notwithstanding the foregoing, appraisal rights shall be available for the shares of any class or series of stock of a constituent corporation if the holders of such corporation are required by the agreement of merger or consolidation to accept for such stock anything but: •shares of stock of the surviving corporation or depository receipts in respect thereof; •shares of stock of another corporation, or depository receipts in respect thereof, that are either listed on a national securities exchange or held of record by more than 2,000 shareholders; •cash in lieu of fractional shares or fractional depository receipts described in the two preceding bullet points; or •any combination of the above. In addition, appraisal rights are not available to holders of shares of the surviving corporation in specified mergers that do not require the vote of the shareholders of the surviving corporation.

22

Shareholder Lawsuits
Under Swiss corporate law, an individual shareholder may bring an action in the shareholder’s own name, for the benefit of the corporation, against the corporation’s directors, officers or liquidators to recover any damages the corporation has incurred as a result of an intentional or negligent breach of duties by such directors, officers or liquidators. Class actions and derivative actions as such are not available under Swiss law. Nevertheless, certain actions may, to a limited extent, have a similar effect. Under Swiss corporate law, the winning party is generally entitled to recover or partially recover attorney's fees incurred in connection with such action, provided, however, that the court has discretion to permit the shareholder whose claim has been dismissed to recover attorney's fees incurred to the extent he or she acted in good faith.	Under the DGCL, a shareholder may initiate a derivative action to enforce a right of a corporation if the corporation fails to enforce the right itself. The complaint must state that the plaintiff was a shareholder at the time of the transaction of which the plaintiff complains or that the plaintiff’s shares thereafter devolved on the plaintiff by operation of law; provided, however, that under Delaware case law, the plaintiff generally must be a shareholder not only at the time of the transaction which is the subject of the suit, but through the duration of the derivative suit. Delaware law also requires that the derivative plaintiff make a demand on the directors of the corporation to assert the corporate claim before the suit may be prosecuted by the derivative plaintiff, unless such demand would be futile. An individual also may commence a class action suit on behalf of himself or herself and other similarly situated shareholders where the requirements for maintaining a class action have been met.
Amendment of Governing Documents
The articles of association of a Swiss corporation may generally be amended by the general meeting of shareholders with a resolution passed by an absolute majority of the votes represented at such meeting, unless otherwise provided in the articles of association or required by law. There are a number of resolutions, such as an amendment of the stated purpose of the corporation and the introduction of authorized and conditional capital, that pursuant to Swiss law require the approval by two-thirds of the votes and an absolute majority of the nominal value of the shares represented at the general meeting of shareholders. The articles of association may increase the voting thresholds. Subject to certain requirements, shareholders may submit a proposal to be voted on at a general meeting of shareholders to amend the articles of association	Under the DGCL, a corporation may amend its certificate of incorporation if: •its board of directors has adopted a resolution setting forth the amendment proposed and declaring its advisability; and •if a majority of the outstanding stock entitled to vote on the amendment, and a majority of the outstanding stock of each class entitled to vote on the amendment as a class, has been voted in favor of the amendment. Under the DGCL, the shareholders entitled to vote have the power to adopt, amend or repeal bylaws. A corporation may also confer, in its certificate of incorporation, such power upon the directors. The fact that such power has been so conferred upon the directors shall not divest the shareholders of the power nor limit their power to adopt, amend or repeal bylaws.

23

Creation and Issuance of New Shares

The creation of new shares requires a resolution of the general meeting of shareholders. Under the CO, our shareholders, by a resolution passed by two-thirds of the votes represented at a general meeting of shareholders and the majority of the nominal value of the shares represented at such meeting, may empower the board of directors to issue shares of a specific aggregate nominal amount, in each case up to a maximum of 50% of the existing issued share capital as registered in the Commercial Register, in the form of: •    conditional capital (bedingtes Kapital) for the purpose of issuing shares (i) through the exercise or mandatory exercise of conversion, exchange, option, warrant or similar rights for the subscription of shares granted to shareholders or third parties in connection with bonds, notes, options warrants or other securities or contractual obligations of the Company or one of our subsidiaries or (ii) through the issuance of rights to subscribe for new shares to employees, members of the board of directors, members of the executive committee, contractors or consultants of the Company or one of our subsidiaries or other persons providing services to the Company or one of our subsidiaries (conversion or option rights); and/or •    a capital range (Kapitalband) to be utilized by the board of directors, for capital increases and/or capital reductions, as applicable, subject to the articles of incorporation, within a period determined by the shareholders but not exceeding five years from the date of the shareholder approval. If and when adopted and approved by the general meeting of shareholders, the capital range will replace the authorized capital (genehmigtes Kapital) as currently provided for in our articles of association which expires on April 13, 2024.

All creation of shares require the board of directors to adopt a resolution or resolutions, pursuant to authority expressly vested in the board of directors by the provisions of the company’s certificate of incorporation.

24

Inspection of Books and Records

Under Swiss corporate law, a shareholder may request to inspect a corporation’s minutes of general meetings of shareholders. A corporation’s annual report, compensation report and the auditors’ reports must be made available electronically to shareholders at least 20 calendar days prior to each annual general meeting of shareholders. If the documents are not electronically accessible, any shareholder may for one year following the general meeting request that they be sent the annual report in the form approved by the general meeting together with the audit reports. Shareholders who hold, alone or together, ordinary shares representing at least 0,5% of the share capital or the votes may request to inspect our books and records. Subject to the safeguarding of a corporation’s business secrets and other legitimate interests, our board of directors may authorize such inspection to the extent necessary to exercise shareholder rights within four months following receipt of such requests. At a general meeting of shareholders, any shareholder may request information from the board of directors concerning the corporation’s affairs. Shareholders may also ask the corporation’s statutory auditors questions regarding their audit of the corporation. The board of directors and the statutory auditors must answer shareholders’ questions to the extent necessary for the exercise of shareholders’ rights and subject to prevailing business secrets or other material interests of the corporation.

Stockholders of a Delaware corporation, upon written demand under oath stating the purpose thereof, have the right during the usual hours for business to inspect for any proper purpose, and to obtain copies of list(s) of stockholders and other books and records of the corporation and its subsidiaries, if any, to the extent the books and records of such subsidiaries are available to the corporation.

25

Shareholder Lawsuits
Under Swiss corporate law, an individual shareholder may bring an action in the shareholder’s own name, for the benefit of the corporation, against the corporation’s directors, officers or liquidators to recover any damages the corporation has incurred as a result of an intentional or negligent breach of duties by such directors, officers or liquidators. Class actions and derivative actions as such are not available under Swiss law. Nevertheless, certain actions may, to a limited extent, have a similar effect. Under Swiss law, the winning party is generally entitled to recover a limited amount of attorneys’ fees incurred in connection with such action. The court has discretion to permit the shareholder who lost the lawsuit to recover attorneys’ fees incurred to the extent that he, she or it acted in good faith.	Under the DGCL, a stockholder may initiate a derivative action to enforce a right of a corporation if the corporation fails to enforce the right itself. The complaint must state that the plaintiff was a stockholder at the time of the transaction of which the plaintiff complains or that the plaintiff’s shares thereafter devolved on the plaintiff by operation of law; provided, however, that under Delaware case law, the plaintiff generally must be a stockholder not only at the time of the transaction which is the subject of the suit, but through the duration of the derivative suit. Delaware law also requires that the derivative plaintiff make a demand on the directors of the corporation to assert the corporate claim before the suit may be prosecuted by the derivative plaintiff, unless such demand would be futile. An individual also may commence a class action suit on behalf of himself or herself and other similarly situated stockholders where the requirements for maintaining a class action have been met.
Dissolution; Winding-up
Under Swiss corporate law, a corporation may be dissolved at any time by way of liquidation, based on a shareholders’ resolution. Such resolution requires the approval by two-thirds of the votes represented as well as the absolute majority of the nominal value of the shares represented at the general meeting of shareholders passing a resolution on such dissolution and winding up. The articles of association may increase the voting thresholds required for such a resolution (which is not the case under our articles of association). Dissolution by law or court order is possible if, for example, a corporation becomes bankrupt. Under Swiss corporate law, any surplus arising out of a liquidation (after the settlement of all claims of all creditors) is distributed to shareholders in proportion to the paid up nominal value of shares held. The articles of association may provide for another distribution (which is not the case under our articles of association).	Unless the board of directors of a Delaware corporation approves the proposal to dissolve, dissolution must be approved by shareholders holding 100.0% of the total voting power of the corporation. Only if the dissolution is initiated by the board of directors may it be approved by a simple majority of the corporation’s outstanding shares. Delaware law allows a Delaware corporation to include in its certificate of incorporation a supermajority voting requirement in connection with dissolutions initiated by the board.

26

American Depositary Shares

Depositary

We have appointed Citibank, N.A., or Citibank, as the depositary for the ADSs pursuant to a deposit agreement. Citibank’s depositary offices are located at 388 Greenwich Street, New York, New York 10013.

A copy of the deposit agreement is filed as an exhibit to the annual report on Form 20-F of which this exhibit forms a part. You may obtain a copy of the deposit agreement from the SEC’s Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549 and from the SEC’s website (www.sec.gov). Please refer to Registration Number 333-255447 when retrieving such copy.

We are providing you with a summary description of the material terms of the ADSs and of your material rights as an owner of ADSs. Please remember that summaries by their nature lack the precision of the information summarized and that the rights and obligations of an owner of ADSs will be determined by reference to the terms of the deposit agreement and not by this summary. We urge you to review the deposit agreement in its entirety. The portions of this summary description that are italicized describe matters that may be relevant to the ownership of ADSs but that may not be contained in the deposit agreement.

Each ADS represents the right to receive and to exercise the beneficial ownership interests in one common share that is on deposit with the depositary and/or the custodian. An ADS also represents the right to receive, and to exercise the beneficial interests in, any other property received by the depositary or the custodian on behalf of the owner of the ADS but that has not been distributed to the owners of ADSs because of legal restrictions or practical considerations. We and the depositary may agree to change the ADS-to-common share ratio by amending the deposit agreement. This amendment may give rise to, or change, the depositary fees payable by ADS owners. The custodian, the depositary and their respective nominees will hold all deposited property for the benefit of the holders and beneficial owners of ADSs. The deposited property does not constitute the proprietary assets of the depositary, the custodian or their nominees. Beneficial ownership in the deposited property will under the terms of the deposit agreement be vested in the beneficial owners of the ADSs. The depositary, the custodian and their respective nominees will be the record holders of the deposited property represented by the ADSs for the benefit of the holders and beneficial owners of the corresponding ADSs. A beneficial owner of ADSs may or may not be the holder of ADSs. Beneficial owners of ADSs will be able to receive, and to exercise beneficial ownership interests in, the deposited property only through the registered holders of the ADSs, by the registered holders of the ADSs (on behalf of the applicable ADS owners) only through the depositary, and by the depositary (on behalf of the owners of the corresponding ADSs) directly, or indirectly through the custodian or their respective nominees, in each case upon the terms of the deposit agreement.

If you become an owner of ADSs, you will become a party to the deposit agreement and therefore will be bound to its terms and to the terms of any ADR that represents your ADSs. The deposit agreement and the ADR specify our rights and obligations as well as your rights and obligations as owner of ADSs and those of the depositary. As an ADS holder you appoint the depositary to act on your behalf in certain circumstances. The deposit agreement and the ADRs are governed by New York law. Swiss law, which may be different from the laws in the United States, governs shareholder rights and our obligations to the holders of common shares. However, as an ADS holder, you will not be treated as one of our shareholders and you will not have shareholder rights.

In addition, applicable laws and regulations may require you to satisfy reporting requirements and obtain regulatory approvals in certain circumstances. You are solely responsible for complying with such reporting requirements and obtaining such approvals. Neither the depositary, nor the custodian, nor us nor any of their or our respective agents or affiliates shall be required to take any actions whatsoever on your behalf to satisfy such reporting requirements or

27

obtain such regulatory approvals under applicable laws and regulations. For the requirement to disclose major shareholdings with SIX Swiss Exchange see "--Notification and Disclosure of Substantial Share Interests."

The manner in which you own the ADSs (e.g., in a brokerage account vs. as registered holder, or as holder of certificated vs. uncertificated ADSs) may affect your rights and obligations under the deposit agreement, and the manner in which, and extent to which, the depositary’s services are made available to you. As an owner of ADSs, we will not treat you as one of our shareholders and you will not have direct shareholder rights. The depositary will hold on your behalf the shareholder rights attached to the common shares underlying your ADSs. As an owner of ADSs you will be able to exercise the shareholders rights for the common shares represented by your ADSs through the depositary only to the extent contemplated in the deposit agreement. To exercise any shareholder rights not contemplated in the deposit agreement you will, as an ADS owner, need to arrange for the cancellation of your ADSs and become a direct shareholder.

As an owner of ADSs, you may hold your ADSs either by means of an ADR registered in your name, through a brokerage or safekeeping account, or through an account established by the depositary in your name reflecting the registration of uncertificated ADSs directly on the books of the depositary, commonly referred to as the direct registration system, or DRS. The direct registration system reflects the uncertificated (book-entry) registration of ownership of ADSs by the depositary. Under the direct registration system, ownership of ADSs is evidenced by periodic statements issued by the depositary to the holders of the ADSs. The direct registration system includes automated transfers between the depositary and The Depository Trust Company, or DTC, the central book-entry clearing and settlement system for equity securities in the United States. If you decide to hold your ADSs through your brokerage or safekeeping account, you must rely on the procedures of your broker or bank to assert your rights as ADS owner. Banks and brokers typically hold securities such as the ADSs through clearing and settlement systems such as DTC. The procedures of such clearing and settlement systems may limit your ability to exercise your rights as an owner of ADSs. Please consult with your broker or bank if you have any questions concerning these limitations and procedures. All ADSs held through DTC will be registered in the name of a nominee of DTC. This summary description assumes you have opted to own the ADSs directly by means of an ADS registered in your name and, as such, we will refer to you as the “holder.” When we refer to “you,” we assume the reader owns ADSs and will own ADSs at the relevant time.

The registration of the common shares in the name of the depositary or the custodian shall, to the maximum extent permitted by applicable law, vest in the depositary or the custodian the record ownership in the applicable common shares, with the beneficial ownership rights and interests in such common shares being at all times vested with the beneficial owners of the ADSs representing the common shares. The depositary or the custodian shall at all times be entitled to exercise the beneficial ownership rights in all deposited property, in each case only on behalf of the holders and beneficial owners of the ADSs representing the deposited property.

Dividends and Distributions

As a holder of ADSs, you generally have the right to receive the distributions we make on the securities deposited with the custodian. Your receipt of these distributions may be limited, however, by practical considerations and legal limitations. Holders of ADSs will receive such distributions under the terms of the deposit agreement in proportion to the number of ADSs held as of a specified record date, after deduction the applicable fees, taxes and expenses.

Distributions of Cash

Whenever we make a cash distribution for the securities on deposit with the custodian, we will deposit the funds with the custodian. Upon receipt of confirmation of the deposit of the requisite funds, the depositary will arrange for the funds received in a currency other than U.S. dollars to be converted into U.S. dollars and for the distribution of

28

the U.S. dollars to the holders, subject to Swiss laws and regulations. The depositary or a division, branch or affiliate of the depositary may act as a principal for any such conversion.

The conversion into U.S. dollars will take place only if practicable and if the U.S. dollars are transferable to the United States and distributable to the ADS holders entitled thereto. If it is unlawful or impracticable to convert such foreign currency and distribute U.S. dollars to the holders, the depositary may, in its discretion, convert such foreign currency and make such distribution to such holders as may be lawful and practicable, distribute foreign currency to holders as may be lawful and practicable or hold any cash amounts it is unable to distribute in a non-interest bearing account for the benefit of the applicable holders and beneficial owners of ADSs until the distribution can be effected or the funds that the depositary holds must be escheated as unclaimed property in accordance with the laws of the relevant states of the United States.

The distribution of cash will be made net of the fees, expenses, taxes and governmental charges payable by holders under the terms of the deposit agreement. The depositary will apply the same method for distributing the proceeds of the sale of any property (such as undistributed rights) held by the custodian in respect of securities on deposit.

Distributions of Shares

Whenever we make a free distribution of common shares for the securities on deposit with the custodian, we will deposit the applicable number of common shares with the custodian. Upon receipt of confirmation of such deposit, the depositary will either distribute to holders new ADSs representing the common shares deposited or modify the ADS-to- common share ratio, in which case each ADS you hold will represent rights and interests in the additional common shares so deposited. Only whole new ADSs will be distributed. Fractional entitlements will be sold and the proceeds of such sale will be distributed as in the case of a cash distribution.

The distribution of new ADSs or the modification of the ADS-to- common share ratio upon a distribution of common shares will be made net of the fees, expenses, taxes and governmental charges payable by holders under the terms of the deposit agreement. In order to pay such taxes or governmental charges, the depositary may sell all or a portion of the new common shares so distributed.

No such distribution of new ADSs will be made if it would violate any law (e.g, the U.S. securities laws) or if it is not operationally practicable. If the depositary does not distribute new ADSs as described above, it may sell the common shares received upon the terms described in the deposit agreement and will distribute the proceeds of the sale as in the case of a distribution of cash.

Distributions of Rights

Whenever we intend to distribute rights to subscribe for additional common shares, we will give prior notice to the depositary and will indicate whether we wish the rights distribution to be made available to you. In such case, we will assist the depositary in determining whether it is lawful and reasonably practicable to distribute rights to subscribe for additional ADSs to holders.

The depositary will establish procedures to distribute rights to subscribe for additional ADSs to holders and to enable such holders to exercise such rights if it is lawful and reasonably practicable to make the rights available to holders of ADSs, and if we provide all of the documentation contemplated in the deposit agreement (such as opinions to address the lawfulness of the transaction). You may have to pay fees, expenses, taxes and other governmental charges to subscribe for the new ADSs upon the exercise of your rights. The depositary is not obligated to establish procedures to facilitate the distribution and exercise by holders of rights to subscribe for new common shares other than in the form of ADSs.

29

The depositary will not distribute the rights to you if:

•we do not timely request that the rights be distributed to you or we request that the rights not be distributed to you; or

•we fail to deliver satisfactory documents to the depositary; or

•it is not reasonably practicable to distribute the rights.

The depositary will sell the rights that are not exercised or not distributed if such sale is lawful and reasonably practicable. The proceeds of such sale will be distributed to holders as in the case of a cash distribution. If the depositary is unable to sell the rights, it will allow the rights to lapse.

Elective Distributions

Whenever we intend to distribute a dividend payable at the election of shareholders either in cash or in additional shares, we will give prior notice thereof to the depositary and will indicate whether we wish the elective distribution to be made available to you. In such case, we will assist the depositary in determining whether such distribution is lawful and reasonably practicable.

The depositary will make the election available to you only if it is reasonably practicable and if we have provided all of the documentation contemplated in the deposit agreement. In such case, the depositary will establish procedures to enable you to elect to receive either cash or additional ADSs, in each case as described in the deposit agreement.

If the election is not made available to you, you will receive either cash or additional ADSs, depending on what a shareholder in Switzerland would receive upon failing to make an election, as more fully described in the deposit agreement.

Other Distributions

Whenever we intend to distribute property other than cash, common shares or rights to subscribe for additional common shares, we will notify the depositary in advance and will indicate whether we wish such distribution to be made to you. If so, we will assist the depositary in determining whether such distribution to holders is lawful and reasonably practicable.

If it is reasonably practicable to distribute such property to you and if we provide to the depositary all of the documentation contemplated in the deposit agreement, the depositary will distribute the property to the holders in a manner it deems practicable.

The distribution will be made net of fees, expenses, taxes and governmental charges payable by holders under the terms of the deposit agreement. In order to pay such taxes and governmental charges, the depositary may sell all or a portion of the property received.

The depositary will not distribute the property to you and will sell the property if:

•we do not request that the property be distributed to you or if we ask that the property not be distributed to you; or

•we do not deliver satisfactory documents to the depositary; or

•the depositary determines that all or a portion of the distribution to you is not reasonably practicable.

The proceeds of such a sale will be distributed to holders as in the case of a cash distribution.

30

Redemption

Whenever we decide to redeem any of the securities on deposit with the custodian, we will notify the depositary in advance. If it is practicable and if we provide all of the documentation contemplated in the deposit agreement, the depositary will provide notice of the redemption to the holders.

The custodian will be instructed to surrender the shares being redeemed against payment of the applicable redemption price. The depositary will convert the redemption funds received in a currency other than U.S. dollars into U.S. dollars upon the terms of the deposit agreement and will establish procedures to enable holders to receive the net proceeds from the redemption upon surrender of their ADSs to the depositary. You may have to pay fees, expenses, taxes and other governmental charges upon the redemption of your ADSs. If less than all ADSs are being redeemed, the ADSs to be retired will be selected by lot or on a pro rata basis, as the depositary may determine.

Changes Affecting Common Shares

The common shares held on deposit for your ADSs may change from time to time. For example, there may be a change in nominal or par value, a split-up, cancellation, consolidation or reclassification of such common shares or a recapitalization, reorganization, merger, consolidation or sale of assets.

If any such change were to occur, your ADSs would, to the extent permitted by law and the deposit agreement, represent the right to receive the property received or exchanged in respect of the common shares held on deposit. The depositary may in such circumstances deliver new ADSs to you, amend the deposit agreement, the ADRs and the applicable Registration Statement(s) on Form F-6, call for the exchange of your existing ADSs for new ADSs and take any other actions that are appropriate to reflect as to the ADSs the change affecting the common shares. If the depositary may not lawfully distribute such property to you, the depositary may sell such property and distribute the net proceeds to you as in the case of a cash distribution.

Issuance of ADSs upon Deposit of Common Shares

The depositary may create ADSs on your behalf if you or your broker deposits common shares with the custodian. The depositary will deliver these ADSs to the person you indicate only after you pay any applicable issuance fees and any charges and taxes payable for the transfer of the common shares to the custodian. Your ability to deposit common shares and receive ADSs may be limited by U.S. and Swiss legal considerations applicable at the time of deposit.

The issuance of ADSs may be delayed until the depositary or the custodian receives confirmation that all required approvals have been given and that the common shares have been duly transferred to the custodian. The depositary will only issue ADSs in whole numbers.

When you make a deposit of common shares, you will be responsible for transferring good and valid title to the depositary. As such, you will be deemed to represent and warrant that:

•The common shares are duly authorized, validly issued, fully paid, non-assessable and legally obtained.

•All pre-emptive (and similar) rights, if any, with respect to such common shares have been validly waived or exercised.

•You are duly authorized to deposit the common shares.

•The common shares presented for deposit are free and clear of any lien, encumbrance, security interest, charge, mortgage or adverse claim, and are not, and the ADSs issuable upon such deposit will not be, “restricted securities” (as defined in the deposit agreement).

31

•The common shares presented for deposit have not been stripped of any rights or entitlements.

•The deposit of the common shares does not violate any applicable provisions of the laws of Switzerland.

If any of the representations or warranties are incorrect in any way, we and the depositary may, at your cost and expense, take any and all actions necessary to correct the consequences of the misrepresentations.

Transfer, Combination and Split Up of ADRs

As an ADR holder, you will be entitled to transfer, combine or split up your ADRs and the ADSs evidenced thereby. For transfers of ADRs, you will have to surrender the ADRs to be transferred to the depositary and also must:

•ensure that the surrendered ADR is properly endorsed or otherwise in proper form for transfer;

•provide such proof of identity and genuineness of signatures as the depositary deems appropriate;

•provide any transfer stamps required by the State of New York or the United States; and

•pay all applicable fees, charges, expenses, taxes and other government charges payable by ADR holders pursuant to the terms of the deposit agreement, upon the transfer of ADRs.

To have your ADRs either combined or split up, you must surrender the ADRs in question to the depositary with your request to have them combined or split up, and you must pay all applicable fees, charges and expenses payable by ADR holders, pursuant to the terms of the deposit agreement, upon a combination or split up of ADRs.

We may restrict transfers of ADSs where such transfer may result in the total number of shares represented by the ADSs owned by a single holder or beneficial owner to exceed limits imposed by applicable law or the Articles. We may instruct the depositary to take actions with respect to the ownership interests of any holder or beneficial owner in excess of such limits including the imposing of restrictions on transfers of ADSs, the removal or limitation of voting rights, or mandatory sale or disposition of ADSs held by such holder of beneficial owner in excess of such limitations.

Withdrawal of Common Shares Upon Cancellation of ADSs

As a holder, you will be entitled to present your ADSs to the depositary for cancellation and then receive the corresponding number of underlying common shares at the custodian’s offices. Your ability to withdraw the common shares held in respect of the ADSs may be limited by U.S. and Swiss legal considerations applicable at the time of withdrawal. In order to withdraw the common shares represented by your ADSs, you will be required to pay to the depositary the fees for cancellation of ADSs and any charges and taxes payable upon the transfer of the common shares being withdrawn. You assume the risk for delivery of all funds and securities upon withdrawal. Once canceled, the ADSs will not have any rights under the deposit agreement.

If you hold ADSs registered in your name, the depositary may ask you to provide proof of identity and genuineness of any signature and such other documents as the depositary may deem appropriate before it will cancel your ADSs. The withdrawal of the common shares represented by your ADSs may be delayed until the depositary receives satisfactory evidence of compliance with all applicable laws and regulations. Please keep in mind that the depositary will only accept ADSs for cancellation that represent a whole number of securities on deposit.

You will have the right to withdraw the securities represented by your ADSs at any time subject to:

•temporary delays that may arise because (i) the transfer books for the ADSs or common shares are closed, or (ii) common shares are immobilized on account of a shareholders’ meeting or a payment of dividends;

32

•obligations to pay fees, taxes and similar charges;

•restrictions imposed because of laws or regulations applicable to ADSs or the withdrawal of securities on deposit; or

•other circumstances specifically contemplated by Instruction I.A.(l) of the General Instructions to Form F-6 Registration Statement, as amended from time to time, under the Securities Act.

The deposit agreement may not be modified to impair your right to withdraw the securities represented by your ADSs except to comply with mandatory provisions of law.

Voting Rights

As a holder, you generally have the right under the deposit agreement to instruct the depositary to exercise the voting rights for the common shares represented by your ADSs. The voting rights of holders of common shares are described in the sections titled “Description of Share Capital and Articles of Association” and “Limitations Affecting Shareholders of a Swiss Company.”

At our timely request, the depositary will distribute to you any notice of general meetings of shareholders or other solicitations of consents received from us and arrange to deliver our voting materials to you, or provide notice with instructions on how to retrieve such materials. Those materials will describe the matters to be voted on and explain how to instruct the depositary to exercise the voting rights of the securities represented by ADSs. For instructions to be valid, they must reach the depositary by a date set by the depositary.

The depositary will try, as far as practical, and subject to the laws of Switzerland and to the Articles, to vote or cause to be voted the common shares underlying the ADSs in accordance with instructions timely received from ADS holders. If the depositary does not timely receive voting instructions with respect to certain ADSs, it will not vote the common shares represented by such ADSs, except as otherwise contemplated in the deposit agreement. If the depositary timely receives voting instructions from a holder that fail to specify the manner in which the common shares are to be voted, the depositary will deem such holder (unless otherwise specified in the notice distributed to holders) to have instructed the depositary to take all steps necessary to enable the independent proxy holder, as elected by the shareholders of the Company, to vote the common shares underlying such ADS holder's ADSs in accordance with the written proposals or recommendations of the Company's board of directors. At our request, the depositary will represent all common shares underlying the ADSs for the purpose of establishing a quorum at a meeting of our shareholders.

Please note that the ability of the depositary to carry out voting instructions may be limited by practical and legal limitations and the terms of the securities on deposit. We cannot assure you that you will receive voting materials in time to enable you to return voting instructions to the depositary in a timely manner. Common shares for which no voting instructions have been timely received will not be voted except as provided above with respect to representing common shares to establish a quorum, and as otherwise contemplated in the deposit agreement. In addition, the depositary and its agents are not responsible for failing to carry out voting instructions, for the manner in which any vote is cast or for the effect of any vote, provided that the depositary acted in good faith, without negligence and in accordance with the deposit agreement. This means that you may not be able to exercise your right to vote and there may be nothing you can do if your common shares are not voted as you requested.

In order to give you a reasonable opportunity to instruct the depositary as to the exercise of voting rights relating to deposited shares, if we request the depositary to act, we will give the depositary notice of the applicable meeting or vote and details concerning the matters to be voted upon in a timely manner in advance of the meeting or vote, the depositary having no obligation to take any action with respect to any vote or meeting if it receives such request later than 30 days before the vote or meeting.

33

Fees and Charges

As an ADS holder, you will be required to pay the following service fees to the depositary under the terms of the deposit agreement:

Service	Fees
•Issuance of ADSs (e.g., an issuance of ADS upon a deposit of common shares, upon a change in the ADS(s)-to- common share(s) ratio, or for any other reason), excluding ADS issuances as a result of distributions of common shares)	Up to U.S. $0.05 per ADS issued
•Cancellation of ADSs (e.g., a cancellation of ADSs for delivery of deposited property, upon a change in the ADS(s)-to- common share(s) ratio, or for any other reason)	Up to U.S. $0.05 per ADS canceled
•Distribution of cash dividends or other cash distributions (e.g., upon a sale of rights and other entitlements)	Up to U.S. $0.05 per ADS held
•Distribution of ADSs pursuant to stock dividends, other free stock distributions or exercise of rights to purchase additional ADSs.	Up to U.S. $0.05 per ADS held
•Distribution of securities other than ADSs or rights to purchase additional ADSs (e.g., upon a spin-off)	Up to U.S. $0.05 per ADS held
•ADS Services	Up to U.S. $0.05 per ADS held on the applicable record date(s) established by the depositary
•Registration of ADS Transfers (e.g., upon a registration of the transfer of registered ownership of ADSs, upon a transfer of ADSs into DTC and vice versa, or for any other reason).	Up to U.S. $0.05 per ADS transferred
•Conversion of ADSs of one series for ADSs of another series (e.g., upon conversion of Partial Entitlement ADSs for Full Entitlement ADSs, or upon conversion of Restricted ADSs into freely transferable ADSs, and vice versa).	Up to U.S. $0.05 per ADS converted

As an ADS holder you will also be responsible to pay certain fees, expenses, taxes and governmental charges such as:

•taxes (including applicable interest and penalties) and other governmental charges;

•such registration fees as may from time to time be in effect for the registration of common shares or other deposited securities on the share register and applicable to transfers of common shares or other deposited securities to or from the name of the custodian, the depositary or any nominees upon the making of deposits and withdrawals, respectively;

•such cable, telex and facsimile transmission and delivery expenses as are expressly provided in the deposit agreement to be at the expense of the person depositing common shares or withdrawing deposited property or of the holders and beneficial owners of ADSs;

34

•in connection with the conversion of foreign currency, the fees, expenses, spreads, taxes and other charges of the depositary and/or conversion service providers (which may be a division, branch or affiliate of the depositary). Such fees, expenses, spreads, taxes, and other charges shall be deducted from the foreign currency;

•any reasonable and customary out-of-pocket expenses incurred in such conversion and/or on behalf of the holders and beneficial owners in complying with currency exchange control or other governmental requirements; and

•the fees, charges, costs and expenses incurred by the depositary, the custodian, or any nominee in connection with the ADR program.

ADS fees and charges for (i) the issuance of ADSs, and (ii) the cancellation of ADSs are charged to the person for whom the ADSs are issued (in the case of ADS issuances) and to the person for whom ADSs are cancelled (in the case of ADS cancellations). In the case of ADSs issued by the depositary into DTC, the ADS issuance and cancellation fees and charges may be deducted from distributions made through DTC, and may be charged to the DTC participant(s) receiving the ADSs being issued or the DTC participant(s) holding the ADSs being cancelled, as the case may be, on behalf of the beneficial owner(s) and will be charged by the DTC participant(s) to the account of the applicable beneficial owner(s) in accordance with the procedures and practices of the DTC participants as in effect at the time.

ADS fees and charges in respect of distributions and the ADS service fee are charged to the holders as of the applicable ADS record date. In the case of distributions of cash, the amount of the applicable ADS fees and charges is deducted from the funds being distributed. In the case of (i) distributions other than cash and (ii) the ADS service fee, holders as of the ADS record date will be invoiced for the amount of the ADS fees and charges and such ADS fees and charges may be deducted from distributions made to holders of ADSs. For ADSs held through DTC, the ADS fees and charges for distributions other than cash and the ADS service fee may be deducted from distributions made through DTC, and may be charged to the DTC participants in accordance with the procedures and practices prescribed by DTC and the DTC participants in turn charge the amount of such ADS fees and charges to the beneficial owners for whom they hold ADSs.

In the case of (i) registration of ADS transfers, the ADS transfer fee will be payable by the ADS holder whose ADSs are being transferred or by the person to whom the ADSs are transferred, and (ii) conversion of ADSs of one series for ADSs of another series, the ADS conversion fee will be payable by the holder whose ADSs are converted or by the person to whom the converted ADSs are delivered.

In the event of refusal to pay the depositary fees or other charges, the depositary may, under the terms of the deposit agreement, refuse the requested service until payment is received or may set off the amount of the depositary fees or other charges from any distribution to be made to the ADS holder.

The fees and charges you may be required to pay may vary over time and may be changed by us and by the depositary. You will receive prior notice of such changes.

The depositary may reimburse us for certain expenses incurred by us in respect of the ADR program, by making available a portion of the depositary fees charged in respect of the ADR program or otherwise, upon such terms and conditions as we and the depositary may agree from time to time.

Amendments and Termination

We may agree with the depositary to modify the deposit agreement at any time without your consent. We undertake to give holders 30 days’ prior notice of any modifications that would materially prejudice any of their substantial rights under the deposit agreement. We will not consider to be materially prejudicial to your substantial rights any

35

modifications or supplements that are reasonably necessary for the ADSs to be registered under the Securities Act or to be eligible for book-entry settlement, in each case without imposing or increasing the fees and charges you are required to pay. In addition, we may not be able to provide you with prior notice of any modifications or supplements that are required to accommodate compliance with applicable provisions of law.

You will be bound by the modifications to the deposit agreement if you continue to hold your ADSs after the modifications to the deposit agreement become effective. The deposit agreement cannot be amended to prevent you from withdrawing the common shares represented by your ADSs (except as permitted by law).

We have the right to direct the depositary to terminate the deposit agreement. Similarly, the depositary may in certain circumstances on its own initiative terminate the deposit agreement. In either case, the depositary must give notice to the holders at least 30 days before termination. Until termination, your rights under the deposit agreement will be unaffected.

After termination, the depositary will continue to collect distributions received (but will not distribute any such property until you request the cancellation of your ADSs) and may sell the securities held on deposit. After the sale, the depositary will hold the proceeds from such sale and any other funds then held for the holders of ADSs in a non-interest bearing account. At that point, the depositary will have no further obligations to holders other than to account for the funds then held for the holders of ADSs still outstanding (after deduction of applicable fees, taxes and expenses).

In connection with any termination of the deposit agreement, the depositary may make available to owners of ADSs a means to withdraw the common shares represented by ADSs and to direct the deposit of such common shares into an unsponsored ADS program established by the depositary. The ability to receive unsponsored ADSs upon termination of the deposit agreement would be subject to satisfaction of certain U.S. regulatory requirements applicable to the creation of unsponsored ADSs and the payment of applicable depositary fees.

Books of Depositary

The depositary will maintain ADS holder records at its depositary office. You may inspect such records at such office during regular business hours but solely for the purpose of communicating with other holders in the interest of business matters relating to the ADSs and the deposit agreement.

The depositary will maintain in New York facilities to record and process the issuance, cancellation, combination, split-up and transfer of ADSs. These facilities may be closed from time to time, to the extent not prohibited by law.

Limitations on Obligations and Liabilities

The deposit agreement limits our obligations and the depositary’s obligations to you. Please note the following:

•We and the depositary are obligated only to take the actions specifically stated in the deposit agreement without negligence or bad faith.

•The depositary disclaims any liability for any failure to carry out voting instructions, for any manner in which a vote is cast or for the effect of any vote, provided it acts in good faith and in accordance with the terms of the deposit agreement.

•The depositary disclaims any liability for any failure to determine the lawfulness or practicality of any action, for the content of any document forwarded to you on our behalf or for the accuracy of any translation of such a document, for the investment risks associated with investing in common shares, for the validity or worth of the common shares, for any tax consequences that result from the ownership of ADSs, for the credit-worthiness of

36

any third party, for allowing any rights to lapse under the terms of the deposit agreement, for the timeliness of any of our notices or for our failure to give notice.

•We and the depositary will not be obligated to perform any act that is inconsistent with the terms of the deposit agreement.

•We and the depositary disclaim any liability if we or the depositary are prevented or forbidden from or subject to any civil or criminal penalty or restraint on account of, or delayed in, doing or performing any act or thing required by the terms of the deposit agreement, by reason of any provision, present or future of any law or regulation, or by reason of present or future provision of any provision of our Articles, or any provision of or governing the securities on deposit, or by reason of any act of God or war or other circumstances beyond our control.

•We and the depositary disclaim any liability by reason of any exercise of, or failure to exercise, any discretion provided for in the deposit agreement or in our Articles or in any provisions of or governing the securities on deposit.

•We and the depositary further disclaim any liability for any action or inaction in reliance on the advice or information received from legal counsel, accountants, any person presenting common shares for deposit, any holder of ADSs or authorized representatives thereof, or any other person believed by either of us in good faith to be competent to give such advice or information.

•We and the depositary also disclaim liability for the inability by a holder to benefit from any distribution, offering, right or other benefit that is made available to holders of common shares but is not, under the terms of the deposit agreement, made available to you.

•We and the depositary may rely without any liability upon any written notice, request or other document believed to be genuine and to have been signed or presented by the proper parties.

•We and the depositary also disclaim liability for any consequential or punitive damages for any breach of the terms of the deposit agreement.

•No disclaimer of any Securities Act liability is intended by any provision of the deposit agreement.

•Nothing in the deposit agreement gives rise to a partnership or joint venture, or establishes a fiduciary relationship, among us, the depositary and you as ADS holder.

•Nothing in the deposit agreement precludes Citibank, N.A. (or its affiliates) from engaging in transactions in which parties adverse to us or the ADS owners have interests, and nothing in the deposit agreement obligates Citibank, N.A. to disclose those transactions, or any information obtained in the course of those transactions, to us or to the ADS owners, or to account for any payment received as part of those transactions.

Taxes

You will be responsible for the taxes and other governmental charges payable on the ADSs and the securities represented by the ADSs. We, the depositary and the custodian may deduct from any distribution the taxes and governmental charges payable by holders and may sell any and all property on deposit to pay the taxes and governmental charges payable by holders. You will be liable for any deficiency if the sale proceeds do not cover the taxes that are due.

The depositary may refuse to issue ADSs, to deliver, transfer, split and combine ADRs or to release securities on deposit until all taxes and charges are paid by the applicable holder. The depositary and the custodian may take

37

reasonable administrative actions to obtain tax refunds and reduced tax withholding for any distributions on your behalf. However, you may be required to provide to the depositary and to the custodian proof of taxpayer status and residence and such other information as the depositary and the custodian may require to fulfill legal obligations. You are required to indemnify us, the depositary and the custodian for any claims with respect to taxes based on any tax benefit obtained for you.

Foreign Currency Conversion

The depositary will arrange for the conversion of all foreign currency received into U.S. dollars if such conversion is practical, and it will distribute the U.S. dollars in accordance with the terms of the deposit agreement. You may have to pay fees and expenses incurred in converting foreign currency, such as fees and expenses incurred in complying with currency exchange controls and other governmental requirements.

If the conversion of foreign currency is not practical or lawful, or if any required approvals are denied or not obtainable at a reasonable cost or within a reasonable period, the depositary may take the following actions in its discretion:

•convert the foreign currency to the extent practical and lawful and distribute the U.S. dollars to the holders for whom the conversion and distribution is lawful and practical;

•distribute the foreign currency to holders for whom the distribution is lawful and practical; and

•hold the foreign currency (without liability for interest) for the applicable holders.

Governing Law/Waiver of Jury Trial

The deposit agreement and the ADRs will be interpreted in accordance with the laws of the State of New York. The rights of holders of common shares (including common shares represented by ADSs) are governed by the laws of Switzerland.

Except as otherwise provided in the deposit agreement, we and the depositary have agreed that any legal action arising out of the deposit agreement between us and the depositary may be instituted in a state or federal court in the City of New York, and we and the depositary have irrevocably submitted to the non-exclusive jurisdiction of such courts for such purpose.

AS A PARTY TO THE DEPOSIT AGREEMENT, YOU IRREVOCABLY WAIVE YOUR RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING AGAINST US AND/OR THE DEPOSITARY. ARISING OUT OF OR RELATING TO THE DEPOSIT AGREEMENT, THE ADRs OR THE TRANSACTIONS CONTEMPLATED THEREIN.

Such waiver of your right to trial by jury may apply to any claim under U.S. federal securities laws. If we or the depositary opposed a jury trial demand based on such waiver, the court would determine whether the waiver was enforceable in the facts and circumstances of that case in accordance with applicable case law. However, you will not be deemed, by agreeing to the terms of the deposit agreement, to have waived our or the depositary’s compliance with U.S. federal securities laws and the rules and regulations promulgated thereunder.

38