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Senior Management

Bill Hitter

Senior Vice President, Director of Internal Audit Services

Internal Audit

Arch Capital Services Inc.

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Bill Hitter

Bill Hitter is Senior Vice President and Director of Internal Audit of Arch Capital Services Inc., a role he has held since December, 2005. Prior to joining Arch, Mr. Hitter spent two years as an Associate Director with the Public Company Accounting Oversight Board (PCAOB). He was a Principal in Ernst & Young’s tri-state insurance practice, where he was responsible for directing and coordinating audit and advisory services for insurance companies. Mr. Hitter is a Certified Public Accountant and holds a B.S. from the State University of New York at Binghamton.

Joy A. Huibonhoa

Senior Vice President, Deputy General Counsel

Legal

Arch Capital Services Inc.

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Joy A. Huibonhoa

Joy A. Huibonhoa is Senior Vice President and Deputy General Counsel of Arch Capital Services Inc. She joined Arch in 2002 after seven years practicing corporate law, with a focus on securities and private equity transactions, in New York City law firms and a venture capital fund/consulting firm. Her current responsibilities include corporate governance, investment, finance activities and legal operations for Arch companies. Ms. Huibonhoa holds an A.B. from Harvard College and a J.D. from the Northwestern University School of Law.

Deborah Huppert

Senior Vice President, Director of Taxation Services

Finance

Arch Capital Services Inc.

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Deborah Huppert

Deborah Huppert is Senior Vice President and Director of Taxation Services of Arch Capital Services Inc. She joined Arch in 2003 from Trenwick Group Ltd. where she assumed the role of Vice President and Director of Tax. Prior to going “in-house” in the (re)insurance industry, Ms. Huppert was a New York-based tax manager with the accounting firm Ernst & Young LLP. She is a New York State-licensed Certified Public Accountant and received her B.S. in Economics from the Wharton School of Business at the University of Pennsylvania.

Debra O’Connor

Executive Vice President, Chief Financial Officer and Treasurer

Finance

Arch Capital Services Inc.

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Debra O’Connor

Debra O’Connor is Executive Vice President and Chief Financial Officer of Arch Capital Services Inc., a position she has held since April 2002. Since joining Arch in 1995, she acted in a variety of accounting and finance roles for Arch Capital Group Ltd. and Arch Re (US). Prior to joining Arch, she was employed at XL Re America, General Re Corp. and PricewaterhouseCoopers. Ms. O’Connor is a Certified Public Accountant and she holds a B.S. from Manhattan College.

Donald Watson

Executive Vice President, Financial Services

Investor Relations

Arch Capital Services Inc.

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Donald Watson

Donald Watson is Executive Vice President, Financial Services of Arch Capital Services Inc. He manages external communications including investor relations, rating agencies and banking relations. Prior to joining Arch in 2005, he worked in a variety of roles in the financial services industry, most recently with ACE Ltd. and Standard & Poor’s Insurance Ratings Group. Mr. Watson received his MBA from Duke University’s Fuqua School of Business and holds a B.A. from Illinois State University.