ALLIED WORLD ASSURANCE COMPANY HOLDINGS, AG

NOTICE OF 2014

ANNUAL SHAREHOLDER MEETING

March 14, 2014

ITEMS OF BUSINESS:

TABLE OF CONTENTS

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PROXY STATEMENT SUMMARY

Allied World 2013 Highlights

Prudent expansion in niche business areas aimed at capitalizing on our specialty insurance and reinsurance industry expertise has been at the core of our performance. We’ve carefully targeted select markets where we can have a meaningful impact. We’ve built a reputation in the industry by being progressive, adapting to changing environments and capitalizing on opportunities for growth.

In 2013, we generated net income of $417.9 million, which increased diluted book value to $102.58 per share, a 10.8% increase for the year. We had a combined ratio of 86.2% and underwriting performance benefitted from profitable growth across our well-diversified, specialty book of business combined with an improving premium rate environment. Favorable reserve releases of $180.3 million, total return on the company’s investment portfolio of $217.0 million and successful management of expenses also combined to contribute to our success. During 2013, our share price increased 43%.

Financial Performance

The following table contains key financial data for each of the last three fiscal years, including data as of each year end.

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(1)        A measure of underwriting performance. The combined ratio represents the total cost per $100 of earned premium. A combined ratio below 100% demonstrates underwriting profit while a combined ratio above 100% demonstrates underwriting loss.

Detailed information of our financial and operational performance is contained in our Annual Report on Form 10-K that is included in our 2013 Annual Report accompanying this Proxy Statement. See our Annual Report on Form 10-K for a reconciliation of the non-GAAP financial measures included in the table above.

Company’s Performance Relative

to Its Peer Group as of December 31, 2013

(In quartiles. 1=first quartile, the highest level; 4=fourth quartile, the lowest level)

Shareholder Voting Recommendations

Our Board of Directors unanimously makes the following recommendations:

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Corporate Governance Highlights

The company is committed to strong corporate governance, which promotes the long-term interests of shareholders, strengthens the accountability of the board of directors (the “Board”) and management and helps build public trust in the company. Highlights include the following:

*   Related proposals are up for shareholder approval at this Annual Shareholder Meeting.

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Our Director Nominees

You are being asked to vote on the election of the following eight directors to the Board. Beginning with this Annual Shareholder Meeting, all directors will be elected annually by a majority of the votes cast. Detailed information about each director’s background and key attributes, experience and skills can be found beginning on page 15 of this Proxy Statement.

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Executive Compensation Philosophy and Goals

The Compensation Committee believes that an effective executive compensation program is one that is designed to:

The Compensation Committee’s objectives for the company’s compensation programs include:

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PROXY STATEMENT

GENERAL MEETING INFORMATION

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Organizational Matters Required by Swiss Law

Admission to the Annual Shareholder Meeting

Shareholders who are registered in our share register on the Record Date will receive the Proxy Statement and proxy card from Continental Stock Transfer & Trust Company, our transfer agent. Beneficial owners of shares will receive instructions from their bank, brokerage firm or other nominee acting as shareholder of record to indicate how they wish their shares to be voted. Beneficial owners who wish to vote in person at the Annual Shareholder Meeting are requested to obtain a power of attorney from their bank, brokerage firm or other nominee that authorizes them to vote the shares held by them on their behalf. In addition, you must bring to the Annual Shareholder Meeting an account statement or letter from your bank, brokerage firm or other nominee indicating that you are the owner of the common shares. Shareholders of record registered in our share register are entitled to participate in and vote at the Annual Shareholder Meeting. Each share is entitled to one vote. The exercise of voting rights is subject to the voting restrictions set out in the company’s Articles of Association, a summary of which is contained in “— How many votes do I have?” Please see the questions and answers provided under “— General Meeting Information” for further information.

Granting a Proxy

If you are a shareholder of record please see “— How do I vote?” and “—How do I appoint and vote via an independent proxy if I am a shareholder of record?” above in the Proxy Statement for more information on appointing an independent proxy.

Registered shareholders who have appointed the independent proxy as a proxy may not vote in person at the Annual Shareholder Meeting or send a proxy of their choice to the meeting unless they revoke or change their proxies. Revocations to the independent proxy must be received by him by no later than 6:00 a.m., local time, on May 1, 2014.

As indicated on the proxy card, with regard to the items listed on the agenda and without any explicit instructions to the contrary, the independent proxy will vote according to the recommendations of the Board. If new agenda items (other than those on the agenda) or new proposals or motions regarding agenda items set out in the invitation to the Annual Shareholder Meeting are being put forth before the meeting, the independent proxy will vote in accordance with the position of the Board in the absence of other specific instructions.

Beneficial owners who have not obtained a power of attorney from their bank, brokerage firm or other nominee are not entitled to participate in or vote at the Annual Shareholder Meeting.

Admission office

The admission office opens on the day of the Annual Shareholder Meeting at 1:30 p.m. local time. Shareholders of record attending the meeting are kindly asked to present their proxy card as proof of admission at the entrance.

Annual Report of Allied World Assurance Company Holdings, AG

The company’s 2013 Annual Report, which accompanies this Proxy Statement, contains the company’s audited consolidated financial statements and its audited statutory financial statements prepared in accordance with Swiss law and can be accessed through the company’s website at www.awac.com under the “Financial Reports” link located in the section entitled “Investor Relations.” Copies of the 2013 Annual Report may be obtained without charge upon written request to the Corporate Secretary, attention: Wayne H. Datz, at Allied World Assurance Company Holdings, AG, Lindenstrasse 8, 6340 Baar, Zug, Switzerland, or via e-mail at secretary@awac.com. The 2013 Annual Report may be physically inspected at the company’s headquarters at Lindenstrasse 8, 6340 Baar, Zug, Switzerland.

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PROPOSAL 1

AMEND THE ARTICLES OF ASSOCIATION TO APPROVE

THE ANNUAL ELECTION OF THE DIRECTORS AND OTHER ANNUAL ELECTIONS

Recent changes in Swiss law (the “Swiss Ordinance”) became effective as of January 1, 2014. Under the Swiss Ordinance, we are required to elect annually (i) each director individually, (ii) the Chairman of the Board, (iii) the members of the Compensation Committee and (iv) the independent proxy beginning with this Annual Shareholder Meeting. As set forth in the Swiss Ordinance, representatives of the company are no longer authorized to act as a proxy and an independent proxy must represent our shareholders. In order to comply with the Swiss Ordinance, the company is proposing related amendments to Articles 9, 14 and 17 of the Articles of Association. Additional components of the Swiss Ordinance will need to be implemented beginning with the 2015 Annual Shareholder Meeting.

Our Articles of Association currently provide for a classified board structure with our directors serving staggered terms of three years. Our Articles of Association currently do not provide for the separate election of our Chairman of the Board, the Compensation Committee members or the independent proxy. Accordingly, the company is proposing the following amendments to our Articles of Association: (i) amend Article 9(2) to empower shareholders to elect the Chairman of the Board, the Compensation Committee members and the independent proxy; (ii) amend Article 14(a) and (f) and add subsection (d) to describe the independent proxy’s duties and related matters; and (iii) amend Article 17(a) and (b) to eliminate the three-year term and instead provide for annual director elections, with each director being elected individually. Assuming the approval of these amendments to our Articles of Association, shareholders will be requested to approve the election of each director, our Chairman of the Board, the Compensation Committee members and the independent proxy. (Please see Proposals 2 through 5 in this Proxy Statement.)

Pursuant to Swiss law, we are required to submit to you for your approval both the English version and the (authoritative) German version of the proposed amendments to the Articles of Association. The foregoing summary of the proposed changes to the company’s current Articles of Association is qualified in its entirety by express reference to the texts of Articles 9, 14 and 17 of the Articles of Association, a copy of which has been marked to indicate changes from the company’s current Articles of Association and is attached as Appendix A to this Proxy Statement.

If the shareholders do not approve this proposal, the Board may call an extraordinary general meeting of shareholders for reconsideration of the proposal.

Your Board unanimously recommends a vote FOR the amendments to Articles 9, 14 and 17 of the Articles of Association as described in this proposal and set forth in Appendix A.

PROPOSAL 2

ELECT THE BOARD OF DIRECTORS

As noted in Proposal 1 above, pursuant to recent changes in Swiss law we are now required to annually elect each member of the Board beginning with this Annual Shareholder Meeting. Assuming Proposal 1 has been approved by shareholders, each member of our Board is being nominated for election at this Annual Shareholder Meeting. Each of the nominees is a current member of the Board and was recommended for appointment to the Board by the Nominating & Corporate Governance Committee to serve until the Annual Shareholder Meeting in 2015.

Your Board unanimously recommends a vote FOR each of the nominees as listed on the enclosed proxy card. It is not expected that any of the nominees will become unavailable for election as a director but, if any nominee should become unavailable prior to the meeting, proxies will be voted

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in accordance with the general instructions provided on the proxy card with regard to such other person as your Board shall recommend and nominate. In the absence of other specific instructions, proxies will be voted as your Board shall recommend.

The biography of each nominee below contains information regarding the person’s service as a director on the Board, his or her business experience, director positions at other companies held currently or at any time during the last five years, and their applicable experiences, qualifications, attributes and skills.

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Board and Committee Membership⁽¹⁾

         ·  Member             C Chair            * Independent Director            ** Lead Independent Director

Director Independence

The Board has determined that Ms. Alexander and Messrs. Duffy, Friedman, Hunter, de Saint-Aignan, Schwartz and Weinhoff are independent directors under the listing standards of the New York Stock Exchange (the “NYSE”). In addition, although Ms. Alexander serves on the audit committee of more than three publicly-traded companies, the Board has affirmatively determined that such simultaneous service does not impair her ability to serve on our Audit Committee. Ms. Alexander will not be seeking re-election to the board of directors of KB Home, therefore she will serve on only three audit committees after April 3, 2014. We require that a majority of our directors meet the criteria for independence under applicable law and the rules of the NYSE. The Board has adopted a policy to assist it and the Nominating & Corporate Governance Committee in their determination as to whether a nominee or director qualifies as independent. This policy contains categorical standards for determining independence and includes the independence standards required by the SEC and the NYSE, as well as standards published by institutional investor groups and other corporate governance experts. In making its determination of independence, the Board applied these standards for director independence and determined that no material relationship existed between the company and these directors. A copy of

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the Board Policy on Director Independence was attached as an appendix to our Proxy Statement filed with the SEC on March 16, 2012.

Meetings and Committees of the Board

During the year ended December 31, 2013, there were five meetings of our Board (including regularly scheduled and special meetings), five meetings of the Audit Committee, four meetings of the Compensation Committee, four meetings of the Enterprise Risk Committee, no meeting of the Executive Committee, four meetings of the Investment Committee and four meetings of the Nominating & Corporate Governance Committee. Each of our directors attended at least 75% of the aggregate number of Board meetings and committee meetings of which he or she was a member during the period he or she served on the Board. Our non-management directors meet separately from the other directors in an executive session at least quarterly. Mr. Friedman, our Vice Chairman of the Board and Lead Independent Director, served as the presiding director of the executive sessions of our non-management and independent directors held in 2013. The Lead Independent Director also has the authority to call meetings of the independent directors or full Board.

Board Leadership Structure

The Board has chosen a leadership structure that combines the role of the Chief Executive Officer and the Chairman of the Board while also having a Lead Independent Director. The Lead Independent Director assumes many of the responsibilities typically held by a non-executive chairman of the board and a list of his responsibilities is provided in the chart below. The company’s rationale for combining the Chief Executive Officer and Chairman of the Board positions relates principally to the Board’s belief that at this stage of our development and continued global expansion, the company and its shareholders will be best served if the Chairman is in close proximity to the senior management team on a regular and continual basis.

Our Board has also approved Corporate Governance Guidelines, a Code of Business Conduct and Ethics and a Code of Ethics for Chief Executive Officer and Senior Financial Officers. The foregoing information is also available on our website at www.awac.com under “Investor Relations — Corporate Information — Governance Documents”. Printed copies of these documents as well as the committee charters discussed below are also available by sending a written request to our Corporate Secretary.

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Audit Committee.    Pursuant to its charter, the Audit Committee is responsible for overseeing our independent auditors, internal auditors, compliance with legal and regulatory standards and the integrity of our financial reporting. Each member of the Audit Committee has been determined by the Board to be “financially literate” within the meaning of the NYSE Listing Standards and each has been designated by the Board as an “audit committee financial expert,” as defined by the applicable rules of the SEC, based on either their extensive prior accounting and auditing experience or having a range of experience in varying executive positions in the insurance or financial services industry.

Compensation Committee.    Pursuant to its charter, the Compensation Committee has the authority to establish compensation policies and recommend compensation programs to the Board, including administering all equity and incentive compensation plans of the company. Pursuant to its charter, the Compensation Committee also has the authority to review the competitiveness of the non-management directors’ compensation programs and recommend to the Board these compensation programs and all payouts made thereunder. Additional information on the Compensation Committee’s consideration of executive compensation, including a discussion of the roles of the company’s Chief Executive Officer and the independent compensation consultant in such executive compensation consideration, is included in “Executive Compensation — Compensation Discussion and Analysis.”

Enterprise Risk Committee.    Pursuant to its charter, the Enterprise Risk Committee oversees management’s assessment and mitigation of the company’s enterprise risks and reviews and recommends to the Board for approval the company’s overall firm-wide risk appetite statement and oversees management’s compliance therewith.

Executive Committee.    The Executive Committee has the authority to oversee the general business and affairs of the company to the extent permitted by Swiss law.

Investment Committee.    Pursuant to its charter, the Investment Committee is responsible for adopting and overseeing compliance with the company’s Investment Policy Statement, which contains investment guidelines and other parameters for the investment portfolio. The Investment Committee oversees the company’s overall investment strategy and the company’s investment risk exposures.

Nominating & Corporate Governance Committee.    Pursuant to its charter, the Nominating & Corporate Governance Committee is responsible for identifying individuals believed to be qualified to become directors and to recommend such individuals to the Board and to oversee corporate governance matters and practices.

The Nominating & Corporate Governance Committee will consider nominees recommended by shareholders and will evaluate such nominees on the same basis as all other nominees. Shareholders who wish to submit nominees for director for consideration by the Nominating & Corporate Governance Committee for election at the Annual Shareholder Meeting in 2015 may do so by submitting in writing such nominees’ names and other information required under SEC rules and our Articles of Association, in compliance with the procedures described under “Shareholder Proposals for 2015 Annual Shareholder Meeting” in this Proxy Statement.

The criteria adopted by the Board for use in evaluating the suitability of all nominees for director include the following:

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In addition to considering candidates suggested by shareholders, the Nominating & Corporate Governance Committee considers candidates recommended by current directors, officers and others. The Nominating & Corporate Governance Committee screens all director candidates. The Nominating & Corporate Governance Committee determines whether or not the candidate meets the company’s general qualifications and specific qualities for directors and whether or not additional information is appropriate.

The Board and the Nominating & Corporate Governance Committee do not have a specific policy regarding diversity. Instead, in addition to the general qualities that the Board requires of all nominees and directors, such as high personal and professional ethics, values and integrity, the Board and the Nominating & Corporate Governance Committee strive to have a diverse group of directors with differing experiences, qualifications, attributes and skills to further enhance the quality of the Board. As we are an insurance and reinsurance company that (i) sells products that protect other companies and individuals from complex risks, (ii) has a significant investment portfolio and (iii) faces operational risks similar to those at other international companies, the Board and the Nominating & Corporate Governance Committee believe that having a group of directors who have the range of experience and skills to understand and oversee this type of business is critical. The Board and the Nominating & Corporate Governance Committee do not believe that each director must be an expert in every aspect of our business, but instead the Board and committee strive to have well-rounded, collegial directors who contribute to the diversity of ideas and strengthen the Board’s capabilities as a whole. Through their professional careers and experiences, the Board and the Nominating & Corporate Governance Committee believe that each director has obtained certain attributes that further the goals discussed above.

Risk Oversight

While the assumption of risk is inherent to our business, we believe we have developed a strong risk management culture throughout our organization that is fostered and maintained by our senior management, with oversight by the Board through its committees. The Board primarily delegates its risk management oversight to three of its committees: the Audit Committee, the Enterprise Risk Committee and the Investment Committee, who regularly report to the Board. The Audit Committee primarily oversees those risks that may directly or indirectly impact the company’s financial statements, the Enterprise Risk Committee primarily oversees the company’s business and operational risks and the Investment Committee primarily oversees the company’s investment portfolio risks. The Enterprise Risk Committee also reviews and recommends for approval by the Board our overall firm-wide risk appetite statement, and oversees management’s compliance with this statement. Each committee has broad powers to ensure that it has the resources to satisfy its duties under its charter, including the ability to request reports from any officer or employee of the company and the authority to retain special counsel or other experts and consultants as it deems appropriate.

Each of these committees receives regular reports from senior management who have day-to-day risk management responsibilities, including from our Chief Executive Officer. The Audit Committee receives reports from our Chief Executive Officer, Chief Financial Officer, Chief Actuary, General Counsel, Chief Information Officer, Head of Internal Audit and the company’s independent auditors. These reports address various aspects of risk assessment and management relating to the company’s financial statements. The Enterprise Risk Committee meets regularly with our Chief Executive Officer, Chief Risk Officer and Chief Actuary as part of its oversight of the company’s underwriting, pricing and claims risks. Throughout the year, the Enterprise Risk Committee will also receive reports from other operational areas. To assist it in its oversight of the company’s investment risk exposures, the Investment Committee receives reports from our Chief Investment Officer, Chief Financial Officer and external investment managers and advisors.

As open communications and equal access to information can be an important part of the Board’s risk oversight, all of the directors receive the information sent to each committee prior to any

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committee meeting. Board members are also encouraged to, and often do, attend all committee meetings regardless of whether he or she is a member of such committee.

Director Compensation

In 2013, compensation for our non-management directors consisted of the following:

Fees for Non-Management Directors

Our non-management directors received $3,000 for each Board meeting attended and $2,000 for each committee meeting attended. We also provide to all non-management directors reimbursement of expenses incurred in connection with their service on the Board, including the reimbursement of director educational expenses.

As discussed in footnote 3 to the “Stock Awards” column of the “Non-Management Directors Compensation” table below, each non-management director received an annual equity award of restricted stock units (“RSUs”) of the company worth approximately $75,000. Each RSU represents the right to receive one newly-issued, fully paid and non-assessable common share of the company at a future date and fully vests on the first anniversary of the date of grant, subject to continued service as a director through such date. The RSUs were awarded to our non-management directors pursuant to the 2012 Omnibus Plan and, other than with respect to vesting terms, were granted on similar terms and conditions as those generally granted to our employees. In 2013, these annual equity awards were granted concurrently with the grant of equity awards to members of our senior management following the preparation and completion of the 2012 year-end financial statements. Consistent with past practice, on February 18, 2014, each of our non-management directors received 740 RSUs under the 2012 Omnibus Plan.

The following table provides information concerning the compensation paid to the company’s non-management directors for fiscal year 2013.

Non-Management Directors Compensation⁽¹⁾

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Matching Gift Program

Our non-management directors may participate in the company’s matching gift program, which is available to all employees. Under this program, the company will match contributions to eligible non-profit organizations, up to a maximum of $10,000 per year.

Stock Ownership Policy

In order to promote equity ownership and further align the interests of the Board with our shareholders, the Board adopted a stock ownership policy for all non-management directors. Under this policy, non-management directors are expected to own, within five years after his or her joining the Board, equity interests of the company with a value equal to five times the then-current annual cash retainer for serving on the Board. Non-management directors are expected not to sell any common shares until they are in compliance with this policy. Mr. Carmilani, our President, Chief Executive Officer and Chairman of the Board, is subject to a stock ownership policy for senior employees as described in “Executive Compensation — Compensation Discussion and Analysis — Stock Ownership Policy.”

PROPOSAL 3

ELECT THE CHAIRMAN OF THE BOARD OF DIRECTORS

As noted in Proposal 1 — “Amend the Articles of Association to Approve the Annual Election of the Directors and Other Annual Elections” above, the Chairman of the Board must be elected annually by our shareholders. The Nominating & Corporate Governance Committee has recommended electing Scott A. Carmilani to serve as Chairman of the Board until the Annual Shareholder Meeting in 2015. Mr. Carmilani has served as Chairman of the Board since January 2008. As noted in “Board Leadership Structure,” our rationale for combining the CEO and Chairman of the Board positions relates principally to the Board’s belief that at this stage of our development and continued global expansion, we and our shareholders will be best served if the Chairman is in close proximity to the senior management team

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on a regular and continual basis. Under Mr. Carmilani’s leadership as President, CEO and Chairman of the Board, we have achieved considerable growth by expanding our operations in Asia, Europe, Latin America and North America; have successfully responded to changes to the insurance and reinsurance industry as well as macroeconomic change; and have delivered superior value creation over the past several years. For additional information about our financial performance and our performance relative to our peers, please see the “Proxy Statement Summary” on page 1 of this Proxy Statement.

This agenda item may only be approved if our shareholders voting (in person or by proxy) at the Annual Shareholder Meeting first approve Proposal 1 — “Amend the Articles of Association to Approve the Annual Election of the Directors and Other Annual Elections” and elect Mr. Carmilani as a director in Proposal 2 —“Elect the Board of Directors”. If our shareholders do not approve this proposal, the Board may call an extraordinary general meeting of shareholders for reconsideration of this proposal.

Your Board unanimously recommends a vote FOR the nominee for Chairman of the Board, Mr. Scott A. Carmilani, as listed on the enclosed proxy card. It is not expected that the nominee will become unavailable for election as Chairman of the Board but, if Mr. Carmilani should become unavailable prior to the meeting, proxies will be voted in accordance with the general instructions provided on the proxy card with regard to such other person as your Board shall recommend and nominate. In the absence of other specific instructions, proxies will be voted as your Board shall recommend.

PROPOSAL 4

ELECT THE COMPENSATION COMMITTEE MEMBERS

As noted in Proposal 1 — “Amend the Articles of Association to Approve the Annual Election of the Directors and Other Annual Elections” above, the Compensation Committee members must be elected annually by our shareholders. The Nominating & Corporate Governance Committee has recommended electing Ms. Alexander and Messrs. Duffy, Friedman, Hunter, de Saint-Aignan, Schwartz and Weinhoff to serve as members of the Compensation Committee until the Annual Shareholder Meeting in 2015. As noted in “Nominees for Election – Board and Committee Membership,” the Compensation Committee is comprised entirely of independent directors. As noted in “Board Leadership Structure,” the Compensation Committee has the authority to establish compensation policies and recommend compensation programs to the Board. Each of the members of the Compensation Committee proposed for election currently serves on the committee.

This agenda item may only be approved if our shareholders voting (in person or by proxy) at the Annual Shareholder Meeting first approve Proposal 1 — “Amend the Articles of Association to Approve the Annual Election of the Directors and Other Annual Elections” and elect each of the directors that are members of the Compensation Committee in Proposal 2 — “Elect the Board of Directors”. If a director is not re-elected in Proposal 2, he or she will be ineligible to serve on the Compensation Committee. If our shareholders do not approve this proposal, the Board may call an extraordinary general meeting of shareholders for reconsideration of this proposal.

Your Board unanimously recommends a vote FOR each of the nominees of the Compensation Committee, Ms. Alexander and Messrs. Duffy, Friedman, Hunter, de Saint-Aignan, Schwartz and Weinhoff, as listed on the enclosed proxy card. It is not expected that any nominee will become unavailable for election as a member of the Compensation Committee but, if any nominee should become unavailable prior to the meeting, proxies will be voted in accordance with the general instructions provided on the proxy card with regard to such other person as your Board shall recommend and nominate. In the absence of other specific instructions, proxies will be voted as your Board shall recommend.

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PROPOSAL 5

ELECT THE INDEPENDENT PROXY

As noted in Proposal 1 — “Amend the Articles of Association to Approve the Annual Election of the Directors and Other Annual Elections” above, the independent proxy must be elected annually by our shareholders. The Board has recommended electing Buis Buergi AG, a Swiss law firm, to serve as the independent proxy at and until the conclusion of the Annual Shareholder Meeting in 2015. As set forth in the Swiss Ordinance, representatives of the company are no longer authorized to act as a proxy and an independent proxy must represent our shareholders. The Swiss Ordinance also authorized the Board to appoint the independent proxy for this Annual Shareholder Meeting, and the Board appointed Mr. Buergi of Buis Buergi AG to serve as the independent proxy. Mr. Buergi has served as independent proxy at our Annual Shareholder Meetings in 2013 and 2012.

If the shareholders do not approve this proposal, the Board may call an extraordinary general meeting of shareholders for reconsideration of this proposal.

Your Board unanimously recommends a vote FOR Buis Buergi AG as the independent proxy at and until the conclusion of the 2015 Annual Shareholder Meeting.

PROPOSAL 6

ADVISORY VOTE ON EXECUTIVE COMPENSATION

The company is providing its shareholders with the opportunity to cast an advisory vote on executive compensation as described below. The company believes that it is appropriate to seek the views of shareholders on the design and effectiveness of the company’s executive compensation program.

The objective of the company’s executive compensation program is to attract and retain talented and highly-skilled employees, reward strong company and individual performance, align the interests of the executive officers and the company’s shareholders and remain competitive with other insurance and reinsurance companies, particularly those with which the company competes. The company believes that its executive compensation program, which emphasizes long-term, performance-based equity awards, a significant portion of which is “at risk” with vesting dependent on the company achieving certain performance targets, meets this objective and is strongly aligned with the long-term interests of its shareholders. The “Compensation Discussion and Analysis” section of this Proxy Statement beginning on page 42 describes the company’s executive compensation program and the decisions made by the Compensation Committee in more detail.

The table below reflects the company’s performance on a relative basis against its Peer Group of 13 insurance and reinsurance companies (the “Peer Group”) for the one, three and five-year periods ended December 31, 2013.

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Company’s Performance Relative

to Its Peer Group as of December 31, 2013

(In quartiles. 1=first quartile, the highest level; 4=fourth quartile, the lowest level)

Your Board unanimously recommends the approval of the following resolution:

RESOLVED, that the compensation paid to the company’s named executive officers, as disclosed pursuant to Item 402 of Regulation S-K promulgated by the SEC, including the Compensation Discussion and Analysis section, compensation tables and narrative discussion, be, and hereby is, APPROVED.

As an advisory vote, this proposal is not binding upon the company. However, the Compensation Committee, which is responsible for designing and administering the company’s executive compensation programs, values the opinions expressed by shareholders in their vote on this proposal and will continue to consider the outcome of the vote when making future compensation decisions for the named executive officers.

PROPOSAL 7

APPROVE THE 2013 ANNUAL REPORT AND FINANCIAL STATEMENTS

The 2013 Annual Report, which accompanies this Proxy Statement, contains our audited consolidated financial statements and its audited statutory financial statements prepared in accordance with Swiss law, for the year ended December 31, 2013, as well as the reports of Deloitte & Touche Ltd. and Deloitte AG, our independent and statutory auditors, respectively. The 2013 Annual Report also contains information on our business activities and our business and financial condition. Pursuant to Swiss law, the 2013 Annual Report, our audited consolidated financial statements and our audited Swiss statutory financial statements must be submitted to shareholders for approval at the Annual Shareholder Meeting. The 2013 Annual Report will be available for physical inspection at our offices at Lindenstrasse 8, 6340 Baar, Zug, Switzerland. Representatives of Deloitte & Touche Ltd. and Deloitte AG will attend the Annual Shareholder Meeting and will have an opportunity to make a statement if they wish. They will also be available to answer questions at the meeting.

If the shareholders do not approve this proposal, the Board may call an extraordinary general meeting of shareholders for reconsideration of this proposal.

Your Board unanimously recommends a vote FOR the approval of our 2013 Annual Report, including our audited consolidated financial statements and its audited Swiss statutory financial statements prepared in accordance with Swiss law, each for the year ended December 31, 2013.

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PROPOSAL 8

APPROVE THE RETENTION OF DISPOSABLE PROFITS

As noted in Proposal 7 — “Approve the 2013 Annual Report and Financial Statements” above, the 2013 Annual Report that accompanies this Proxy Statement contains the company’s audited statutory financial statements prepared in accordance with Swiss law for the year ended December 31, 2013, as well as the report of Deloitte AG, our statutory auditors. For the year ended December 31, 2013, on a standalone basis, we had disposable profits of CHF 328 million (or approximately $368 million). The Board proposes that the disposable profit on the company’s audited statutory financial statements be carried forward as retained earnings for fiscal year 2013. The Board believes that it is in the best interests of the company and its shareholders to retain earnings for future investment in the growth of our business and for other attractive business opportunities. As noted in Proposal 9 — “Approve the Payment of Dividends to Shareholders” below, we are proposing that our shareholders receive cash dividends from general legal reserve from capital contributions. Accordingly, we are proposing that no dividend distribution be made at this time to shareholders from 2013 year-end disposable profits.

If the shareholders do not approve this proposal, the Board may call an extraordinary general meeting of shareholders for reconsideration of this proposal.

Your Board unanimously recommends a vote FOR carrying forward as retained earnings the company’s disposable profits on its audited statutory financial statements for the year ended December  31, 2013.

PROPOSAL 9

APPROVE THE PAYMENT OF DIVIDENDS TO SHAREHOLDERS

General Explanation of the Dividend

This agenda item calls for a distribution to shareholders out of general legal reserve from capital contributions, in an aggregate CHF amount equal to $2.70 per share (the “Base Annual Dividend”), using the USD/CHF currency exchange ratio as reported by The Wall Street Journal on the fourth New York business day prior to the date of the Annual Shareholder Meeting rounded down to the next cent amount (the “Foreign Exchange Rate”) which can be divided by four, payable in four installments; provided that, each of the CHF installments will be adjusted pursuant to a formula so that the actual CHF amount for each installment will equal $0.675 per share, subject to an aggregate upward adjustment (the “Dividend Cap”), for the four installments of 50% of the Base Annual Dividend. Application of the formula will mean that the CHF amount of each installment will be determined at the approximate time of distribution, while the U.S. dollar value of the installment will remain $0.675 per share unless and until the Dividend Cap is reached. A quarterly installment that would otherwise exceed the Dividend Cap will be reduced to equal the CHF amount remaining available under the Dividend Cap, and the U.S. dollar amount distributed will be the then-applicable U.S. dollar equivalent of that CHF amount. If both this Proposal 9 and Proposal 12 – “Approve a 3-for-1 Split of Common Shares” are approved by shareholders, the Base Annual Dividend will be adjusted to $0.90 per share, the Dividend Cap will be adjusted to $0.45 per share and the aggregate and quarterly dividend amounts noted below will also be adjusted accordingly.

Agenda Item

The Board proposes that our shareholders voting (in person or by proxy) at our Annual Shareholder Meeting approve the following dividend in the form of a distribution from the company’s “general legal reserve from capital contributions” account. The blank numbers in the following resolution will be completed based upon the company’s actual share capital upon the date of the Annual Shareholder Meeting and applicable exchange rate calculations described below.

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Quarterly Dividend Amount From Capital Contributions Reserves = Quarterly Dollar Amount x USD/CHF currency exchange ratio as reported by The Wall Street Journal on June 10, 2014, for the first quarterly dividend payment, on September 9, 2014, for the second quarterly dividend payment, on December 9, 2014, for the third quarterly dividend payment, and on March 10, 2015, for the fourth quarterly dividend payment.

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If the shareholders do not approve this proposal, the Board may call an extraordinary general meeting of shareholders for reconsideration of this proposal.

Your Board unanimously recommends a vote FOR the payment of the dividend as described above, such payment to be made in four quarterly installments.

PROPOSAL 10

APPROVE THE CANCELLING OF TREASURY SHARES

In May 2012, the company’s shareholders approved a share repurchase program for the repurchase of up to $500 million of common shares, with such repurchased shares being designated for cancellation. Under its 2012 share repurchase program, the company has repurchased and holds in treasury 1,793,732 common shares as of February 24, 2014. The company is seeking approval of a capital reduction through a cancellation of 1,793,732 common shares held in treasury. The cancellation of these shares will be made against “reserve for treasury shares from capital contributions”. The remaining common shares held in treasury by the company that are not cancelled are expected to be used in connection with the company’s equity benefit plans or in other qualifying transactions. The cancellation of the treasury shares will have the effect of reducing the current share capital of the company by an aggregate amount of CHF 22,062,903.60.

Under Swiss law, a report from Deloitte AG, an auditor supervised by the Swiss government, will be available at the Annual Shareholder Meeting to confirm that the receivables of the creditors of the company are fully covered after the capital reduction resulting from the cancellation of the 1,793,732 common shares held in treasury. Upon satisfaction of all legal requirements, under Swiss law we will be required to submit an application to the Commercial Register in the Canton of Zug, Switzerland to register the amendments to our Articles of Association to cancel these treasury shares. Without effective registration, we will not be able to proceed with the cancellation of the treasury shares as described in this proposal. We cannot assure you that the Commercial Register in the Canton of Zug will approve the registration.

Pursuant to Swiss law, we are required to submit to you for your approval both the English version and the (authoritative) German version of the proposed amendments to the company’s Articles of Association. Upon the approval of this proposal, Article 3 of the Articles of Association will be amended to read as follows:

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If the shareholders do not approve this proposal, the Board may call an extraordinary general meeting of shareholders for reconsideration of this proposal.

Your Board unanimously recommends that shareholders vote FOR the capital reduction by cancellation of 1,793,732 common shares held in treasury and the corresponding amendment to our Articles of Association.

PROPOSAL 11

APPROVE A NEW SHARE REPURCHASE PROGRAM

The company is seeking the approval of its shareholders to establish a new share repurchase program for the repurchase of up to $500 million of the company’s common shares. Under the terms of this new share repurchase program, the first one million common shares repurchased will remain in treasury and will be used by us to satisfy share delivery obligations under our equity-based compensation plans. Any additional common shares repurchased will be designated for cancellation and will be cancelled upon shareholder approval at a future annual shareholder meeting and therefore shall not be subject to the statutory provision of Swiss law that prohibits the company from holding in treasury more than 10% of its aggregate common shares. The repurchase of common shares will only be made from reserves from capital contributions. The company currently anticipates that the repurchases of common shares shall take place over a two-year period.

In May 2012, the company established a $500 million share repurchase program. As of February 28, 2014, there was approximately $192.0 million in remaining capacity under the 2012 share repurchase program. If approved by shareholders at the Annual Shareholder Meeting, the new share repurchase program will supersede the 2012 share repurchase program and no further repurchases will be made under the 2012 share repurchase program.

The Board is proposing that shareholders approve the new share repurchase program in order to provide the company with maximum capital management flexibility. The Board believes that the future repurchase of shares is advisable to the extent that market conditions, our financial condition and other factors so permit, in order to return excess cash to shareholders. The Board is therefore seeking shareholder approval to provide the company with the flexibility to repurchase common shares at any time after the Annual Shareholder Meeting.

If the share repurchase program is approved by the shareholders, there can be no assurance that any common shares will actually be repurchased in the near term after the Annual Shareholder Meeting, or at all, and the repurchase program may be suspended or discontinued at any time.

The Board or the company’s management, as applicable, may decide, based upon general market conditions, the company’s cash flow, the company’s ongoing capital requirements, the price of the shares, regulatory considerations and other factors, that the company should retain cash, reduce debt, make capital investments or otherwise use cash for general corporate purposes, and consequently repurchase fewer common shares or not repurchase any shares. Decisions regarding the amount, if any, and timing of any share repurchases would be made from time to time based upon the factors set forth above.

The Board has designated for cancellation any repurchased common shares in excess of one million shares. The benefit of this procedure is that by obtaining shareholder approval for the future cancellation of these repurchased shares, they no longer fall under the statutory provision of Swiss law that prohibits the company from holding in treasury an aggregate amount of common shares that exceed 10% of the company’s share capital. Please note that Proposal 10 — “Approve the Cancelling of Treasury Shares” relates to the cancellation of shares that we hold in treasury and which were repurchased under the 2012 share repurchase program.

Your Board unanimously recommends a vote FOR the approval of the company’s $500 million share repurchase program.

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PROPOSAL 12

APPROVE A 3-FOR-1 SPLIT OF COMMON SHARES

The company is proposing to effect a 3-for-1 forward split of our common shares. The trading price of our common shares has experienced significant growth since our initial public offering price of $34.00 per share in 2006. The closing market price of our common shares on February 28, 2014 was $99.72 per share, as reported on the NYSE. We have evaluated the effect of such growth on the liquidity and marketability of our common shares and believe the considerable appreciation in our common share price makes our shares less affordable and attractive to some investors. We believe affecting a share split may attract a broader group of potential investors, particularly individuals, which may result in increased liquidity and a broader market for our common shares. The 68,283,968 increase in common shares resulting from the split will have the same rights and privileges as the common shares presently issued and outstanding. The company will apply to list these common shares on the NYSE.

At the Annual Shareholder Meeting, the company’s shareholders will be asked to approve amendments to the company’s Articles of Association to effect a 3-for-1 forward split of our common shares, which would result in an increase in the number of common shares that the company is authorized to issue as described in the immediately following paragraph and in a reduction of the par value of our common shares from CHF 12.30 per share to CHF 4.10 per share (the “Share Split”). The Board has deemed it advisable and in the best interests of our shareholders to effect the Share Split and unanimously approved such split on February 18, 2014, subject to shareholder approval.

As of February 24, 2014, there were 35,935,716 common shares issued (of which 2,695,491 common shares were held in treasury by the company) under Article 3(a) of the Articles of Association; up to 1,000,000 common shares available for issuance under Article 4(a) of the Articles of Association in connection with the exercise of conversion and/or option or warrant rights granted in connection with bonds and similar debt instruments; up to 4,200,00 common shares available for issuance under Article 5(a) of the Articles of Association in connection with the exercise of option rights granted under our equity compensation plans; and up to 7,500,728 of authorized share capital available for issuance under Article 6(a) of the Articles of Association at such times and for such general corporate purposes as the Board may deem advisable without further action by the company’s shareholders, except as may be required by applicable laws or regulations, including the rules of the NYSE. If the proposed amendments are adopted, and Proposal 10 — “Approve the Cancelling of Treasury Shares” is approved, based on the number of authorized and issued common shares as of February 24, 2014, there would be 102,425,952 common shares issued (of which 2,705,277 common shares would be held in treasury by the company) under Article 3(a) of the Articles of Association; up to 3,000,000 common shares available for issuance under Article 4(a) of the Articles of Association; up to 12,600,000 common shares available for issuance under Article 5(a) of the Articles of Association; and up to 22,502,184 of authorized share capital available for issuance under Article 6(a) of the Articles of Association.

Except for common shares reserved for issuance under our existing equity compensation plans, the Board has no current plans to issue additional common shares and there are no current agreements or commitments for the issuance of additional shares. The Board has not proposed to increase the amount of common shares with the intention of discouraging tender offers or takeover attempts of the company.

If the proposed amendments are adopted, each shareholder of record as of the close of business on the date the proposed amendments are filed and registered with the Commercial Register in the Canton of Zug, Switzerland will become the record owner of three common shares instead of the one common share then owned of record by such shareholder. The company currently anticipates that the record date with the Commercial Register in the Canton of Zug will be May 12, 2014 and the share distribution date will be May 22, 2014. All common shares issued as a result of the proposed Share Split will be issued in book-entry form through the Direct Registration System or through a share certificate. Shareholders of record holding certificates representing our common shares should retain

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such certificates and should not return them to the company or its transfer agent, as it will not be necessary to submit outstanding shares certificates for exchange.

The company has been advised by tax counsel that the proposed Share Split would not result in recognition of gain, loss or other taxable income to our shareholders under existing U.S. Federal income tax laws. The cost basis for tax purposes of each new common share and each retained common share would be equal to one-third of the cost basis for tax purposes of the corresponding share immediately preceding the Share Split. In addition, the holding period for the additional common shares issued pursuant to the Share Split would be deemed to be the same as the holding period of the original common shares. This discussion should not be considered as tax or investment advice, and the tax consequences of the Share Split may not be the same for all holders of our common shares. Shareholders should consult their own tax advisors regarding their individual federal, state, local and foreign tax consequences.

If shareholders dispose of their common shares subsequent to the Share Split, they may pay higher brokerage commissions on the same relative interest in the company because that interest is represented by a greater number of common shares. Shareholders should consult their respective brokers to ascertain the brokerage commission that would be charged for disposing of the greater number of common shares.

In accordance with our equity compensation plans, it will be necessary to make appropriate adjustments in the number of common shares that remain available for issuance pursuant to our active compensation plans, as well as in the number of common shares and price of common shares subject to outstanding stock options under our equity plans (including those of our plans in run-off). From the effective date of the proposed Share Split, the number of common shares that remain available for issuance pursuant to our active equity compensation plans will be tripled, the number of common shares subject to outstanding awards under our equity compensation plans (including those of our plans in run-off) will be tripled, and the exercise price per common share of stock options granted under such plans will be divided by three.

The Board reserves the right, notwithstanding shareholder approval of the proposed amendment to the Articles of Association, and without further action by the shareholders, to elect not to proceed with the amendments discussed in this proposal if, at any time prior to filing of such amendments, the Board determines that it is no longer in the best interests of the company and shareholders to proceed with the Share Split.

Pursuant to Swiss law, we are required to submit to you for your approval both the English version and the (authoritative) German version of the proposed amendments to the Articles of Association. The foregoing summary of the proposed changes to the company’s current Articles of Association is qualified in its entirety by express reference to the text of Articles 3(a), 4(a), 5(a), and 6(a) of the Articles of Association, a copy of which has been marked to indicate changes from the company’s current Articles of Association and is attached as Appendix A to this Proxy Statement.

For purposes of this proposal, we have assumed that Proposal 10 — “Approve the Cancelling of Treasury Shares” will be approved by shareholders and the Commercial Register in the Canton of Zug, Switzerland. If Proposal 10 is not approved, the amendment to our Articles of Association reflected in this proposal will be revised accordingly.

Your Board unanimously recommends a vote FOR the 3-for-1 split of common shares and the corresponding amendments to our Articles of Association.

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PROPOSAL 13

AMEND THE ARTICLES OF ASSOCIATION RELATING TO

AUTHORIZED SHARE CAPITAL FOR GENERAL PURPOSES

The company’s share capital prior to the Annual Shareholder Meeting will be CHF 442,009,306.80, or 35,935,716 common shares (the “Current Share Capital”). The company’s share capital to be registered in the Commercial Register in the Canton of Zug, Switzerland after giving effect to the capital reduction resulting from the cancellation of the Treasury Shares described in Proposal 10 — “Approve the Cancelling of Treasury Shares” and the 3-for-1 split of our common shares described in Proposal 12 – “Approve a 3-for-1 Split of Common Shares” will be CHF 419,946,403.20, or 102,425,952 common shares (the “Post-Cancellation Share Capital”).

Under Swiss law, shareholders can authorize the board of directors of a company to issue new registered shares at any time within a period of no more than two years and, thereby, increase its share capital by a maximum amount of 50% of its then existing share capital. The Board has elected to request authority to increase our aggregate share capital by a maximum amount of 20% of our existing aggregate share capital. The Board was granted the authority to issue up to 7,500,728 authorized shares (i.e., 20% of our then existing aggregate share capital) on May 3, 2012 at our 2012 Annual Shareholder Meeting. This authority is set forth in Article 6 of our Articles of Association and will expire on May 3, 2014.

The Board believes its authority to issue authorized common shares should be extended for an additional two-year period from the date of the Annual Shareholder Meeting until May 1, 2016. The Board proposes that our shareholders grant the Board the authority to issue up to 20,485,190 common shares until May 1, 2016 and approve a corresponding amendment to Article 6, sub-paragraph a) of our Articles of Association. This maximum number of common shares is less than the number currently authorized in our Articles of Association (which would be 22,502,184 common shares assuming a 3-for-1 stock split) because the number of our common shares outstanding has decreased due to a cancellation of a portion of our treasury shares approved by shareholders at our 2013 Annual Shareholder Meeting and will decrease further after giving effect to the capital reduction resulting from the cancellation of the Treasury Shares described above, assuming that proposal is approved by shareholders and the Commercial Register in the Canton of Zug, Switzerland. The maximum number corresponds to approximately 19.0% of our aggregate Current Share Capital and approximately 20.0% of our aggregate Post-Cancellation Share Capital.

The authorized share capital approved pursuant to this agenda item will be available for issuance at such times and for such purposes as the Board may deem advisable without further action by the company’s shareholders, except as may be required by applicable laws or regulations, including the rules of the NYSE. For example, the additional authorized share capital will be available for issuance by the Board in connection with financings, acquisitions of other companies, stock dividends or other corporate purposes. We believe this is an important step to help ensure that the Board can adapt and react quickly to a changing economic climate, business challenges, including increased catastrophes, and opportunities in capital and other relevant markets. The Board did not issue additional shares pursuant to its previous authorization and does not intend to issue any stock except on terms or for reasons which the Board deems to be in the best interests of the company and its shareholders.

Pursuant to Swiss law, we are required to submit to you for your approval both the English version and the (authoritative) German version of the proposed amendments to the company’s Articles of Association. Upon the approval of this proposal, Article 6(a) of the Articles of Association will be amended to read as follows:

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For purposes of this proposal, we have assumed that Proposal 10 — “Approve the Cancelling of Treasury Shares” and Proposal 12 —“Approve a 3-for-1 Split of Common Shares” have been approved by shareholders and the Commercial Register in the Canton of Zug, Switzerland. If either of these proposals is not approved, the amendment to our Articles of Association reflected in this proposal will be revised accordingly.

Your Board unanimously recommends a vote FOR the extension of the Board’s authority to issue authorized share capital until May  1, 2016.

PROPOSAL 14

ELECT DELOITTE & TOUCHE LTD. AS

INDEPENDENT AUDITOR AND DELOITTE AG AS STATUTORY AUDITOR

Pursuant to Swiss law, the appointment of our independent and statutory auditors is subject to approval annually by the company’s shareholders. The company’s shareholders must elect an independent auditing firm for purposes of SEC reporting. The company’s shareholders must also elect an auditing firm that will be responsible for auditing the company’s consolidated financial statements and statutory financial statements. At the recommendation of the Audit Committee, your Board unanimously recommends the election of Deloitte & Touche Ltd. as our independent auditor for purposes of SEC reporting and Deloitte AG as our statutory auditor for the fiscal year ending December 31, 2014. Deloitte & Touche Ltd. has served as the company’s independent auditor since April 2002 and Deloitte AG has served as the company’s auditors since May 2010 in connection with the company redomesticating to Switzerland.

Representatives of Deloitte & Touche Ltd. and Deloitte AG will attend the Annual Shareholder Meeting and will have an opportunity to make a Swiss statutory disclosure statement if they wish. They will also be available to answer questions at the meeting. If approved, Deloitte & Touche Ltd. and Deloitte AG will serve as the company’s independent and statutory auditors, respectively, for such compensation as the Audit Committee of your Board shall reasonably determine until the company’s next Annual Shareholder Meeting.

Your Board unanimously recommends a vote FOR the appointment of Deloitte & Touche Ltd. as the company’s independent auditor and Deloitte AG as its statutory auditor.

Fees to Independent Registered Public Accountants for Fiscal 2013 and 2012

The following table shows information about fees billed to us by Deloitte & Touche Ltd. and Deloitte AG and their affiliates for services rendered for the fiscal years ended December 31, 2013 and 2012.

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The Audit Committee has a policy to pre-approve all audit and non-audit services to be provided by the independent auditors and estimates therefor. The Audit Committee pre-approved all audit services and non-audit services and estimates therefor provided to the company by the independent auditors in 2013 and 2012.

PROPOSAL 15

ELECT PRICEWATERHOUSECOOPERS AG AS SPECIAL AUDITOR

Under Swiss law, special reports by an auditor are required in connection with certain corporate transactions, including certain types of increases in share capital. We have been informed that, because of the auditor independence requirements under U.S. federal securities laws, Deloitte AG cannot act as our special auditing firm with respect to certain types of capital increases.

At the recommendation of the Audit Committee, your Board unanimously recommends the election of PricewaterhouseCoopers AG, an auditor supervised by the Swiss government, as the company’s special auditing firm until the next Annual Shareholder Meeting. If the company’s shareholders do not approve this proposal, the Board may call an extraordinary general meeting of shareholders for reconsideration of this proposal by shareholders.

Your Board unanimously recommends a vote FOR the election of PricewaterhouseCoopers AG as the company’s special auditors.

PROPOSAL 16

DISCHARGE OF THE BOARD OF DIRECTORS

AND EXECUTIVE OFFICERS FROM LIABILITIES

As is customary for Swiss corporations and in accordance with Article 698, subsection 2, item 5 of the Swiss Code of Obligations, shareholders are requested to discharge from liability all the individuals who served as members of the Board or as executive officers of the company for their activities during the fiscal year ended December 31, 2013 that have been disclosed, or are otherwise known, to the shareholders. The release binds only the company and the shareholders who either voted in favor of the proposal or who subsequently acquired shares with the knowledge of this resolution.

Under Swiss law, the right of shareholders who do not vote in favor of this proposal to bring an action against the directors and/or executive officers with respect to the matters discharged is extinguished within six months after approval of this proposal by the shareholders.

Your Board unanimously recommends a vote FOR the discharge from liability of all the individuals who served as members of the Board or as executive officers of the company for their activities during the year ended December  31, 2013.

CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

The company has no related-party transactions to report.

Review, Approval or Ratification of Transactions with Related Persons

Pursuant to our Audit Committee charter, the Audit Committee reviews and approves the related-party transactions we enter into. We do not have formal written standards in connection with the review and approval of related-party transactions as we believe each transaction should be analyzed on its own merits. In making its decision, the Audit Committee reviews, among other things, the relevant agreement, analyzes the specific facts and circumstances and speaks with, or receives a memorandum from, management that outlines the background and terms of the transaction. As insurance and reinsurance companies enter into various transactions in the ordinary course of business, the Audit Committee does not review these types of transactions to the extent they are open-market transactions that happen to involve related parties.

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PRINCIPAL SHAREHOLDERS

The table below sets forth information as of February 24, 2014 regarding the beneficial ownership of our common shares by:

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EXECUTIVE OFFICERS

Our executive officers are elected by and serve at the discretion of your Board. The following table identifies the executive officers of the company, including their respective ages and positions as of the date hereof.

John R. Bender has been the President of the Allied World Reinsurance Management Company since February 2012 and oversees our reinsurance platform on a global basis. From August 2009 to February 2012, he served as the President and Chief Operating Officer of Allied World Reinsurance Company, one of our subsidiaries. He joined us in November 2007 as the Chief Operating Officer of Allied World Reinsurance Company. From November 2007 through November 2011, Mr. Bender was responsible for establishing and expanding the company’s U.S. reinsurance platform and for overseeing its day-to-day operations. Since December 2011, Mr. Bender has assumed responsibility for providing strategic leadership and executing business strategies for our global reinsurance operations. Prior to joining us, Mr. Bender held several senior management positions at Platinum Underwriters Holdings, Ltd., including Chief Underwriting Officer, Casualty from November 2005 to October 2007 and Senior Vice President, Commercial Liability Products from October 2002 to November 2005. From 1989 to October 2002, he held numerous claims and underwriting positions with St. Paul Reinsurance Management Company.

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Thomas A. Bradley joined the company as Executive Vice President & Chief Financial Officer in September 2012. Prior to joining us, Mr. Bradley had served as the Chief Financial Officer of Dorsey & Whitney LLP, a large international law firm, since August 2011. From April 2009 to April 2011, Mr. Bradley served in various financial positions at the Fair Isaac Corporation, a business services company, including as its Executive Vice President and Chief Financial Officer. From April 2004 to February 2009, Mr. Bradley served in various financial and operational positions at Zurich Financial North America, a financial services company, including as its Executive Vice President and Chief Financial Officer. Prior to that, he held a host of senior financial and operational positions at USF&G Corporation/St. Paul Companies.

Wesley D. Dupont has been our Executive Vice President & General Counsel since September 2009 and presently oversees our legal, compliance, claims and human resources functions on a global basis. From December 2005 to September 2009, he served as our Senior Vice President, General Counsel and served as our Corporate Secretary through May 2012. In November 2003, Mr. Dupont began working for American International Company Limited, a subsidiary of AIG, and began providing legal services to us pursuant to a former administrative services contract with American International Company Limited. Through that contract, Mr. Dupont served as our Senior Vice President, General Counsel and Secretary from April 2004 until November 30, 2005. As of December 1, 2005, Mr. Dupont became an employee of our company. Prior to joining American International Company Limited, Mr. Dupont worked as an attorney at Paul, Hastings, Janofsky & Walker LLP, a large international law firm, where he specialized in general corporate and securities law. From April 2000 to July 2002, Mr. Dupont was a Managing Director and the General Counsel for Fano Securities, LLC, a specialized securities brokerage firm. Prior to that, Mr. Dupont worked as an attorney at Kelley Drye & Warren LLP, another large international law firm, where he also specialized in general corporate and securities law.

Frank N. D’Orazio has been the President — Bermuda and International Insurance of Allied World Assurance Company, Ltd, one of our subsidiaries, since September 2009 where he is responsible for providing strategic leadership and executing business strategies for the Bermuda, Europe and Asia insurance platforms. Prior to that, he served as the Chief Underwriting Officer of Allied World Assurance Company, Ltd since September 2008. From March 2005 to September 2008, Mr. D’Orazio was the company’s Senior Vice President — General Casualty where he was responsible for managing the company’s general casualty and healthcare operations in Bermuda, Europe and the United States. Mr. D’Orazio joined the company in June 2003 as Vice President — General Casualty. Prior to joining our company, Mr. D’Orazio worked for the retail insurance market arm of American Re-Insurance from August 1994 to May 2003, where he held a succession of underwriting and management positions. Mr. D’Orazio held various underwriting positions in the excess casualty division of Chubb from June 1990 to July 1994.

John J. Gauthier, CFA, has been our Executive Vice President & Chief Investment Officer since May 2011 and oversees the management of the company’s investment portfolio. In September 2012, he was also named President of Allied World Financial Services, Inc. and Allied World Financial Services, Ltd, subsidiaries of the company. Since March 2010, he has served as the Executive Vice President and Chief Investment Officer of AWAC Services Company, a subsidiary of the company. From October 2008 through February 2010, he served as Senior Vice President and Chief Investment Officer of AWAC Services Company. Previous to joining our company, Mr. Gauthier was Global Head of Insurance Fixed Income Portfolio Management at Goldman Sachs Asset Management from February 2005 to September 2008. Prior to that position, from 1997 to January 2005 he was Managing Director and Portfolio Manager at Conning Asset Management where he oversaw investment strategy for all property and casualty insurance company clients. Mr. Gauthier also served as Vice President at General Reinsurance/New England Asset Management, as well as a Portfolio Manager at General Reinsurance.

Marshall J. Grossack has been our Executive Vice President-Chief Actuary since September 2009. He served as our Senior Vice President and Chief Corporate Actuary from July 2004 to September 2009. From June 2002 until July 2004, Mr. Grossack was a Vice President and Actuary for American International Company Limited, a subsidiary of AIG, and provided services to us pursuant to a

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former administrative services contract with American International Company Limited. From June 1999 until June 2002, Mr. Grossack worked as the Southwest Region Regional Actuary for subsidiaries of AIG in Dallas, Texas.

Louis P. Iglesias has been President, Allied World North America for Allied World Assurance Company (U.S.) Inc. and Allied World National Assurance Company, two of our subsidiaries, since January 31, 2014 and is responsible for providing strategic leadership and executing business strategies for the company’s United States and Canada insurance platforms. From April 2012 through January 2014, he was the President, U.S. Property & Casualty for Allied World Assurance Company (U.S.) Inc. and Allied World National Assurance Company. From 1994 to April 2012, Mr. Iglesias served in various senior management positions at AIG, including Chief Executive Officer for Commercial Casualty, President for the Risk Management Group, President for AIG Environmental and President of AIG Construction. Prior to AIG, Mr. Iglesias worked at Travelers and Reliance insurance companies.

Julian James has been the President of Allied World Assurance Company (Europe) Limited, one of our subsidiaries, since March 2013 and is responsible for providing strategic leadership and executing business strategies for the company’s European insurance platform. From September 2007 to January 2013, Mr. James served as the Chief Executive Officer at Lockton International. From 1997 to April 2007, Mr. James held senior management positions at Lloyd’s, most recently as Director, Worldwide Markets, where he was responsible for all Lloyd’s commercial activities outside of the United Kingdom, including the management of its trading licenses as well as oversight of its global branding and communications. Before joining Lloyd’s, Mr. James was the Development Director of brokers Sedgwick Energy and Marine Limited and a member of the division’s Executive Management Committee. Prior to that, he spent five years working in senior positions with Sedgwick in North America.

John J. McElroy was appointed our Chief Operating Officer in March 2012. In this role, he oversees the Company’s operations and administration, information technology, ceded reinsurance and project management on a global basis. From May 2008 through February 2012, Mr. McElroy served as President, Professional Lines, of Allied World Assurance Company (U.S.) Inc. and Allied World National Assurance Company and oversaw the underwriting of all directors and officers liability, errors and omissions liability and medical malpractice liability insurance products by the Company’s U.S. insurance operations. From June 2004, when he joined us, through April 2008, Mr. McElroy served as our Senior Vice President, Field Operations Officer, during which time he was responsible for expanding our U.S. insurance operations, developing our network of U.S. offices and increasing brand and product visibility. Prior to joining us, Mr. McElroy worked with Gulf Insurance Group for 12 years where he held various underwriting and other senior management positions. He began his career at AIG underwriting directors and officers liability insurance for large commercial risks.

Kent W. Ziegler has been our Senior Vice President, Finance and Chief Accounting Officer since February 2013. Prior to joining us, from January 2010 through January 2013, Mr. Ziegler served as the Senior Vice President and Chief Financial Officer of the Retail Real Estate Division of JPMorgan Chase & Co. From 2005 to 2009, Mr. Ziegler served in JPMorgan Chase’s Business Banking Division, most recently as the Senior Vice President and Chief Financial Officer. From 1989 to 2004, Mr. Ziegler served in various financial and operational positions at Gulf Insurance Group, including as the Executive Vice President, Chief Financial Officer and Chief Administrative Officer. He began his career in public accounting at Ernst & Young.

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EXECUTIVE COMPENSATION

COMPENSATION DISCUSSION AND ANALYSIS

Executive Summary

In accordance with the rules of the NYSE, a majority of the members of the Board are independent and the Compensation Committee is presently comprised of six independent Board members. The Board has adopted a Compensation Committee Charter discussed earlier in this Proxy Statement. The Compensation Committee oversees our compensation programs and makes recommendations to the Board. Pursuant to Swiss law, the Board is required to make all final compensation decisions regarding the NEOs. We have achieved considerable growth since our inception in November 2001 and our compensation programs have been designed to reward executives who contribute to our continuing success.

The Compensation Committee has selected Farient Advisors, LLC (“Farient”) as its independent compensation advisor. At the committee’s direction, Farient has conducted an extensive review of our executive compensation strategy and programs to ensure strong alignment between executive compensation, business strategy and long-term shareholder value creation.

Compensation Philosophy. Compensation Philosophy. The insurance and reinsurance industry is very competitive, cyclical and often volatile, and our success depends in substantial part on our ability to attract and retain successful, high-achieving employees who will remain motivated and committed to the company during all insurance industry cycles. We have a strong pay for performance philosophy. We start with the notion that for our executive compensation program, total compensation should be at the median of our peer group, and we set base salaries with this pay positioning in mind. However, if our performance is high relative to our peer group, we pay actual cash bonuses and grant long-term equity incentive awards in-line with that performance. Accordingly, the Compensation Committee believes that an effective executive compensation program is one that is designed to:

The Compensation Committee’s objectives for the company’s compensation programs include:

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Components of Executive Compensation. The components of our executive compensation program and the terms of each are shown in the table below:

Components of Executive Compensation

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The mix of our total direct compensation (comprised of base salary, annual cash bonus and equity-based incentive compensation) for our NEOs at grant value is shown below:

As shown in the charts above, the Compensation Committee manages the pay mix such that a substantial portion of pay is dedicated to “at risk” compensation, including annual cash bonuses and equity-based incentive compensation. The Compensation Committee believes that this mix of pay best aligns the interests of our executives, including the NEOs, with those of our shareholders over time.

We use ROE for both our short-term cash bonus program and our long-term, equity-based compensation program because:

Our Compensation Practices.    We continue to implement and maintain what we believe are leading practices in our compensation program and related areas. These practices include the following:

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The Role of Shareholder Say-on-Pay Votes.    We provide our shareholders with the opportunity to cast an annual advisory vote on executive compensation (the “say-on-pay proposal”). At our Annual Shareholder Meeting held in May 2013, 98.4% of the votes cast were in favor of the say-on-pay proposal. The Compensation Committee believes this affirms our shareholders’ support of our approach to executive compensation, and the committee did not change its approach in 2013. The Compensation Committee will continue to consider the outcome of the company’s say-on-pay votes when making future compensation decisions for the NEOs and other senior officers at the company.

Compensation Oversight and Process

The Compensation Committee has established a number of processes to assist it in ensuring that NEO compensation is achieving its objectives. Among those are:

In determining the level of compensation for the NEOs, both quantitative and qualitative factors of the company’s and each NEO’s performance are analyzed. The Compensation Committee primarily uses formulaic factors to assess company performance. However, due to the potential volatility of the insurance and reinsurance industry and thus the company’s financial results, the Compensation Committee believes that it is appropriate to also use non-formulaic factors to assess company and individual performance.

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Relationship Between Pay and Performance.    The success of the company’s business and resulting value for our shareholders is contingent upon our successfully selecting, pricing and managing insurance and reinsurance risks over the long-term. Our business requires that we assess, select and respond to identified market opportunities in a highly disciplined and cost effective manner. To reinforce this approach, our executive compensation program is designed to align executives’ interests closely with shareholder interests by tying executive compensation directly to equity results, as well as to those financial and strategic results that drive shareholder value, including sustainable, profitable growth; high returns; efficient, risk-adjusted capital deployment; and the company’s strategic positioning. In this regard, key features of our executive compensation program include:

In 2013, the Compensation Committee reviewed an assessment conducted by Farient on the company’s pay and performance alignment. Farient determined that the company’s performance has generally been in the top quartile compared to our peers, despite challenging market conditions, including excess capacity and increased competition as well as continuing economic turmoil. Farient also determined that our CEO’s compensation (calculated using both a grant date equity value and performance-adjusted equity value) was in the top quartile of other Peer Group CEOs. The company’s quartile rank in performance is shown in the chart below:

Company’s Performance Relative

to Its Peer Group as of December 31, 2013

(In quartiles. 1=first quartile, the highest level; 4=fourth quartile, the lowest level)

Given our high relative performance, as well as the Compensation Committee’s philosophy that pay should be commensurate with performance, the committee determined that our CEO compensation has been positioned appropriately. The Compensation Committee is committed to ensuring that CEO and other NEO compensation are appropriately aligned with performance, and will continue to monitor our pay-for-performance alignment as an input in making pay decisions.

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Assessment of Individual Performance.    All of our NEOs have specific objectives that are established at the beginning of each year. Each NEO’s performance (other than our CEO’s performance) is reviewed annually by Mr. Carmilani, our CEO, based on his individual skills and qualifications, management responsibilities and initiatives, staff development and the achievement of departmental, geographic and/or established business goals and objectives, depending on the role of the NEO. Each NEO’s performance was assessed on both company and individual achievements in light of current market conditions. Mr. Carmilani’s performance was reviewed by the Compensation Committee and was also assessed on both the company’s achievements and his individual achievements in light of current market conditions in the insurance and reinsurance industry. In 2013, these performance reviews formed the basis on which compensation-related decisions were made for annual cash bonuses and grants of performance-based and time-vested RSU awards, as well as 2014 base salaries and target bonus opportunities.

Roles of the CEO and the Compensation Committee.  The Compensation Committee recommends to the Board for approval the company’s compensation programs and the total amount available for the base salaries, cash bonuses and equity-based compensation for the NEOs and the other executive officers as a group. The Compensation Committee also determines the company’s compensation philosophy and objectives and sets the framework for the NEOs’ compensation structure. Within this framework, Mr. Carmilani, our CEO, recommends to the Compensation Committee all aspects of compensation for each NEO, excluding himself. He reviews the recommendations, survey data and other materials provided to him by our Human Resources Department and Farient as well as proxy statements and other publicly available information of our industry peers. He also assesses the company’s and each NEO’s performance as described above. The conclusions and recommendations resulting from these reviews and consultations, including proposed salary adjustments, annual cash bonus amounts and equity award amounts, are then presented to the Compensation Committee for its review and consideration. The Compensation Committee has discretion to modify any recommendation it receives from Mr. Carmilani, but strongly relies on his recommendations.

The Board and NEO Interactions.  The Board has the opportunity to meet with the NEOs regularly during the year. In 2013, the company’s NEOs met with and made presentations to the Board regarding their respective business lines or responsibilities. The company believes that the interaction among its NEOs and the Board is important in enabling the Board, including the members of the Compensation Committee, to form its own assessment of each NEO’s performance.

The Roles of Our Independent Advisors.  The Compensation Committee directed Farient to conduct analyses on key aspects of NEO and other senior officer pay and performance, and to provide recommendations about compensation plan design. Farient reports directly to the Compensation Committee and in 2013 did not provide any non-executive consulting services to the company that would require disclosure under SEC rules. Farient meets with members of senior management to gain a greater understanding of key issues facing the company and to review its cash and equity compensation programs. The Compensation Committee meets separately with Farient to review in detail all compensation-related decisions regarding the CEO as well as the structure of the company’s compensation programs. During this review, the Compensation Committee also receives Farient’s analyses of the Peer Group, NEO pay and performance for the company and its peers, a compensation risk assessment, analyses of compensation best practices and current compensation trends.

The Compensation Committee has also engaged Simpson Thacher & Bartlett LLP (“Simpson Thacher”) as its outside legal counsel to provide advice on the company’s compensation programs and related public disclosures as well as to provide guidance on matters requested by the committee from time to time.

The Compensation Committee has assessed the independence of Farient and Simpson Thacher pursuant to SEC rules and concluded that no conflict of interest exists that would prevent Farient or Simpson Thacher from serving as an independent advisor to the Compensation Committee.

Timing of Awards.  The Compensation Committee believes that compensation decisions regarding employees should be made after year-end results have been determined to better align employee compensation with company performance and shareholder value. This requires that annual cash bonuses, equity awards and base salary adjustments be determined after year-end financials have been prepared and

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completed. The Compensation Committee’s policy is to approve compensation decisions at its regularly scheduled meeting during the first quarter of the year.

Benchmarking.  The Compensation Committee reviews our competitive pay positioning annually based on a report prepared by Farient. Farient compiles data on approximately 25 of our top positions, including our NEOs, using a number of nationally recognized surveys covering the property and casualty insurance and reinsurance industry as well as general industry surveys. In addition, Farient uses proxy data for the CEO and CFO positions from our Peer Group. Farient compiles data on base salaries, target annual bonus opportunities, target equity-based incentive compensation values and total direct compensation, which is the sum of all three components. The Compensation Committee uses this information as one input, among others, such as individual performance and retention requirements, for making compensation decisions regarding salary increases, target bonus opportunities and equity-based incentive compensation awards each year.

Peer Group.  The Compensation Committee asks Farient to review the company’s Peer Group on an annual basis. For 2013, the company’s Peer Group is comprised of 13 insurance and reinsurance companies, selected primarily because they are similar to the company in terms of property and casualty insurance and reinsurance business mix; percentage of U.S. and non-U.S. business written; focus on specialty insurance; high-quality financial strength; and size, as measured by gross premiums written, total revenue and market capitalization. Farient uses the Peer Group for purposes of assessing total direct compensation for the CEO and CFO positions; program design, including measures and goals; pay practices; equity plan burn-rate and share overhang; business performance; an analysis of pay and performance; and Board compensation.

The 13 Peer Group companies used by the Compensation Committee as inputs for 2013 pay design and pay level decisions are as follows:

Peer Group

Assessment of Risks Associated with Compensation.  The Compensation Committee has evaluated whether our compensation policies and programs encourage excessive risk taking. As part of this evaluation, the Compensation Committee reviewed a detailed compensation risk assessment conducted by Farient. In its assessment, Farient established both quantitative and qualitative criteria for assessing the company’s compensation programs, and evaluated numerous elements of the company’s pay mix, its compensation-related performance measurements, its governance and its processes and procedures that mitigate risk in its compensation programs. In addition to the above assessment, at the Compensation Committee’s request, Farient also conducted a review of the pay programs and risk mitigation policies covering certain executives that have direct responsibility for decisions that impact the company’s risk position. Based on these assessments, Farient concluded and the Compensation Committee concurred that the company’s balanced pay and performance program coupled with its risk mitigation policies effectively prevent excessive risk taking.

Total Compensation Review.  Each year, the Compensation Committee reviews a summary report or “tallysheet” prepared by the company for each NEO as well as the other executive officers. The purpose of a tallysheet is to show the aggregate dollar value of each officer’s total annual compensation, including base salary, annual cash bonus, equity-based compensation, perquisites and all other compensation earned over the past two years. The tallysheet also shows amounts payable to each NEO

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upon termination of his employment under various severance and change-in-control scenarios. Tallysheets are reviewed by our Compensation Committee for informational purposes.

The table below reflects the process and philosophy by which the Compensation Committee calculated executive compensation in 2013 for our NEOs and is intended to assist shareholders in understanding the elements of total compensation as determined by the Compensation Committee. This information differs from the calculation of total compensation in accordance with the disclosure rules of the SEC, primarily by disclosing the grant date fair value of equity awards granted in 2014 for the prior year 2013 performance. A table further on in this Proxy Statement under the heading “Summary Compensation Table” reflects the SEC methodology. The following discussion describes the relationship between the amounts reported in the table below and those amounts reported in the Summary Compensation Table and related tables. While the table below is presented to explain how the Compensation Committee determines compensation, the table and its accompanying disclosure are not a substitute for the tables and disclosures required by the SEC’s rules. The tables and related disclosures required by the SEC’s rules begin on page 61.