Arch Insurance Group Announces New Side A Enhancement Product

Arch Personal Advantagesm is designed to protect the personal
assets of companies' Directors and Officers. In this environment of
heightened personal liability and exposure, a changing legal climate and
an uncertain insurance market, the reliability of indemnification and
insurance coverage for Directors & Officers --is crucial.

Arch Personal Advantage offers important features such as:

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Industry-leading coverage trigger

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Broad scope of coverage

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Limited exclusions

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Immediate availability

"We've bolstered Arch's Side A liability products to create a level of
protection that helps companies protect their management against
potentially devastating exposures in this turbulent market. Combined
with our financial strength and tenure in the Side A marketplace, Arch
Personal Advantage offers a turn-key solution for industry leading
non-indemnifiable protection," said John Rafferty, Sr. Executive Vice
President of Arch's Executive Assurance Division.

Arch Personal Advantage is offered in conjunction with Arch's
Broad Form Management Liability policy. Arch Personal Advantage (IDL) is
offered in conjunction with Arch's Independent Director Liability
policy. These two product enhancements represent a comprehensive
solution for personal asset protection of Directors and Officers when
indemnification is otherwise not available. This coverage is offered for
public and private companies across all industries.

Arch Insurance Group Inc. is a member of Arch Capital Group Ltd., a
Bermuda-based company that provides insurance and reinsurance on a
worldwide basis through its wholly owned subsidiaries. For more
information, visit www.archinsurance.com.

Insurance coverage is underwritten by one or more member companies of
Arch Insurance Group in North America, which consists of Arch Insurance
Company (a MO corporation, NAIC #11150), Arch Specialty Insurance
Company (a NE corporation, NAIC #21199), Arch Excess & Surplus Insurance
Company (a NE corporation, NAIC #10946) and Arch Indemnity Insurance
Company (a NE Corporation, NAIC #30830). Executive offices are located
at One Liberty Plaza in New York City 10006. Not all insurance coverages
or products are available in all jurisdictions. Coverage is subject to
actual policy language.

Cautionary Note Regarding Forward-Looking Statements

The Private Securities Litigation Reform Act of 1995 provides a "safe
harbor" for forward--looking statements. This release or any other
written or oral statements made by or on behalf of Arch Capital Group
Ltd. and its subsidiaries may include forward--looking statements, which
reflect our current views with respect to future events and financial
performance. All statements other than statements of historical fact
included in or incorporated by reference in this release are
forward--looking statements.

Forward--looking statements can generally be identified by the use of
forward--looking terminology such as "may," "will," "expect," "intend,"
"estimate," "anticipate," "believe" or "continue" or their negative or
variations or similar terminology. Forward--looking statements involve
our current assessment of risks and uncertainties. Actual events and
results may differ materially from those expressed or implied in these
statements. A non-exclusive list of the important factors that could
cause actual results to differ materially from those in such
forward-looking statements includes the following: adverse general
economic and market conditions; increased competition; pricing
and policy term trends; fluctuations in the actions of rating
agencies and our ability to maintain and improve our ratings;
investment performance; the loss of key personnel; the
adequacy of our loss reserves, severity and/or frequency of
losses, greater than expected loss ratios and adverse development on
claim and/or claim expense liabilities; greater frequency or
severity of unpredictable natural and man-made catastrophic events; the
impact of acts of terrorism and acts of war; changes in regulations
and/or tax laws in the United States or elsewhere; our ability to
successfully integrate, establish and maintain operating procedures as
well as integrate the businesses we have acquired or may acquire into
the existing operations; changes in accounting principles or
policies; material differences between actual and expected
assessments for guaranty funds and mandatory pooling arrangements; availability
and cost to us of reinsurance to manage our gross and net exposures; the
failure of others to meet their obligations to us; and other
factors identified in our filings with the U.S. Securities and Exchange
Commission.

The foregoing review of important factors should not be construed as
exhaustive and should be read in conjunction with other cautionary
statements that are included herein or elsewhere. All subsequent written
and oral forward--looking statements attributable to us or persons acting
on our behalf are expressly qualified in their entirety by these
cautionary statements. We undertake no obligation to publicly update or
revise any forward--looking statement, whether as a result of new
information, future events or otherwise.

SOURCE: Arch Insurance Group

Arch Insurance Group Inc. 
Stefanie Frelick, 646-563-6431 
Vice President, Corporate Marketing & Communications

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