Marc Grandisson

Chief Executive Officer & Director at Arch Capital Group Ltd.

Marc Grandisson

Marc Grandisson

Chief Executive Officer & Director at Arch Capital Group Ltd.

Career Highlights

Arch Reinsurance Co.
Arch Capital Group Ltd.
Arch Reinsurance Ltd.

RelSci Relationships


Number of Boards






RelSci Relationships are individuals Marc Grandisson likely has professional access to. A relationship does not necessarily indicate a personal connection.

Chairman & Chief Executive Officer at Arch Worldwide Reinsurance Group

Relationship likelihood: Strong

Former Chief Executive Officer at Watford Holdings Ltd.

Relationship likelihood: Strong

President & Chief Underwriting Officer, Arch Capital Group Ltd. & Chief Executive Officer, Arch Worldwide Insurance Group at Arch Capital Group Ltd.

Relationship likelihood: Strong

Professional at Verisk Analytics Inc.

Relationship likelihood: Strong

Chief Financial Officer, Treasurer & Executive Vice President at Arch Capital Group Ltd.

Relationship likelihood: Strong

Chief Investment Officer at Arch Capital Group Ltd.

Relationship likelihood: Strong

General Counsel at Arch Capital Group Ltd.

Relationship likelihood: Strong

Executive Vice President & Chief Financial Officer at AIG

Relationship likelihood: Strong

Chief Operations Officer at Arch Capital Group Ltd.

Relationship likelihood: Strong

Founder at F&G Re, Inc.

Relationship likelihood: Strong

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Marc Grandisson
Chief Executive Officer & Director at Arch Capital Group Ltd.
Class of 2000

The Wharton School is the business school of the University of Pennsylvania, an Ivy League university in Philadelphia, Pennsylvania. Wharton was the world’s first collegiate business school and the first business school in the United States. It was established in 1881 through a donation of Joseph Wharton.

B.Sc. in Actuarial Science

The oldest centre of education in Canada, and was the first institution in North America to offer higher education in French.

1993 - Current

American Academy of Actuaries is a D.C.based 17,000 member professional association whose mission is to serve the public and the U.S. actuarial profession. Academy members include consultants, corporate executives and staff, regulators, government officials, academicians, and retired actuaries. Their areas of practice cover pensions, life insurance, casualty insurance, health insurance, financial reporting, risk management, and more.


The Casualty Actuarial Society (CAS) is a professional society of actuaries whose goal is "the advancement of the body of knowledge of actuarial science applied to property, casualty, and similar risk exposures."[2] Its members are mainly involved in the property and casualty areas of the actuarial profession.[

Career History
Chief Executive Officer & Director
2005 - Current

Arch Capital Group Ltd. provides property and casualty insurance and reinsurance lines. It operates through the following segments: Insurance, Reinsurance, Mortgage, Corporate (Non-Underwriting), and Other. The Insurance segment consists insurance underwriting units which offer specialty product lines like construction and national accounts, excess and surplus casualty, lenders products, professional lines, and programs. The Reinsurance segment comprises reinsurance underwriting which offer specialty product lines such as casualty, marine and aviation, other specialty, property catastrophe, property excluding property catastrophe, and other. The Mortgage segment includes U.S. and international mortgage insurance and reinsurance operations as well as GSE credit risk sharing transactions. The Corporate (Non-Underwriting) segment involves in net investment income, other income, corporate expense, interest expense, net realized gains and losses, and net impairment losses. The Other segment refers to Watford Re. which is a variable interest entity. The company was founded by Clements Robert in September 2000 and is headquartered in Hamilton, Bermuda.

President & Chief Executive Officer
2001 - Prior

Arch Reinsurance Ltd. is engaged in the provision of specialty and casualty reinsurance products. Such products include reinsurance of property catastrophe and property excess of loss and professional liability and marine treaties. The company was founded in 2001 and is headquartered in Hamilton, Bermuda.

Chairman & Chief Executive Officer
2001 - 2015

Arch Worldwide Reinsurance Group, part of Arch Capital Group Ltd., is a Bermudian company located in Hamilton that provides reinsurance services. Maamoun Rajeh has been the CEO since 2017.

Boards & Committees
Director & Vice President
1994 - 1996

F&G Re, Inc., a subsidiary of The Travelers Cos., Inc., is a company headquartered in Morristown, NJ. The firm provides insurance services. It was founded by James N. Stanard.

Public Holdings
Restricted data only for RelSci Professional users.
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