Markel to Acquire Alterra for Approximately $31 Per Share in Stock and Cash

 Markel to Acquire Alterra for Approximately $31 Per Share in Stock and Cash

Enhanced scale and financial strength of the combined company will create
greater opportunities for the new Markel in the global marketplace

PR Newswire

RICHMOND, Va., Dec. 19, 2012

RICHMOND, Va., Dec. 19, 2012 /PRNewswire/ --Markel Corporation ("Markel")
(NYSE: MKL) and Alterra Capital Holdings Limited ("Alterra") (NASDAQ: ALTE;
BSX: ALTE.BH) announced today that their respective boards of directors have
each unanimously approved a definitive merger agreement. Under the terms of
the agreement, the aggregate consideration for Alterra is approximately $3.13
billion, based on a closing price of $486.05 for Markel common stock on
December 18, 2012.

At closing, each Alterra common share will be converted into the right to
receive 0.04315 Markel common shares (with cash paid for fractional shares)
plus a cash payment of $10. Following the merger, Markel's existing
shareholders will own approximately 69% of the combined company on a fully
diluted basis, with Alterra's shareholders owning approximately 31%.
Completion of the transaction is contingent upon customary closing conditions,
including shareholder and regulatory approvals, and it is expected to close in
the first half of 2013.

Upon closing, two directors designated by Alterra's current board will be
added to the board of directors of Markel.

Steven A. Markel, Vice Chairman of Markel, commented: "We are very pleased to
have reached this agreement to acquire Alterra, an impressive company with
proven worldwide underwriting operations in product lines that we believe are
highly complementary to Markel's existing lines. In particular, the addition
of Alterra's reinsurance and large account insurance portfolios will serve to
diversify and strengthen Markel's current book of specialty insurance
business. We look forward to welcoming Alterra's talented underwriting teams
to Markel – with their help and the benefit of approximately $6 billion in
combined shareholders' equity, we believe we will be well positioned to take
advantage of a wide range of profitable opportunities."

W. Marston (Marty) Becker, President and Chief Executive Officer of Alterra,
who is expected to leave the company following the close of the transaction,
said: "The combination of Alterra with Markel will create an incredibly strong
company in global specialty insurance and investments. The demonstrated track
record of underwriting discipline in niche market segments by both companies,
along with Markel's proven asset management strengths, should benefit all
stakeholders. I am confident that Alterra's shareholders, clients and other
business partners will continue to be well served when Alterra's underwriting
operations join forces with Markel's, and all should benefit from the superior
financial strength, expanded capabilities and synergies created by the
combined entity."

Strategic and financial attributes associated with the combination of Markel
and Alterra:

The combination of Markel and Alterra is expected to create significant
benefits for the shareholders of both companies, and to provide a robust
foundation for strong financial performance going forward.

Enhanced size and scale: Following the close of the transaction, Markel is
expected to write annual gross premiums of approximately $4.4 billion and to
have approximately $6 billion in equity with capital flexibility to support
future growth.

Strong and well diversified franchise: Complementary business profiles provide
important diversification of risk, with Markel adding reinsurance and
large-account insurance to its specialty insurance portfolio. Following the
close of the transaction, Markel's business is expected to be approximately
50% short-tail, 50% long tail; 67% insurance and 33% reinsurance.

Common cultures of underwriting discipline: The merger brings together
seasoned and accomplished underwriting teams with limited overlap in diverse
specialty insurance and reinsurance lines.

Strong investment performance: Markel brings a long and successful track
record of investment outperformance. This expertise can now be applied to the
combined entity's investment portfolio of over $16 billion.

Additional details on the transaction are posted on the websites of Markel and
Alterra, at and, respectively.

Citigroup acted as financial advisor to Markel and Debevoise & Plimpton LLC
and Appleby's as legal counsel. BofA Merrill Lynch acted as financial advisor
to Alterra and Akin Gump Strauss Hauer & Feld LLP and Conyers Dill & Pearman
as legal counsel.

Conference Call and Webcast:
Markel and Alterra will conduct a joint investor conference call on December
19, 2012 at 11:00 a.m. Eastern Time to discuss the merger with interested
investors and shareholders. On the call, Markel will be represented by Steven
A. Markel and Presidents Richard R. Whitt, III, F. Michael Crowley and Thomas
S. Gayner, and Alterra will be represented by W. Marston (Marty) Becker, and
Executive Vice President and Chief Financial Officer Joe Roberts.

The details of the call are as follows:
Date: December 19, 2012
Time: 11:00 a.m. Eastern Time
Toll-free number (U.S. callers): 1-877-407-9205
International callers: 1- 201-689-8054

Please dial in five to ten minutes prior to the start of the call.

In addition, interested persons may listen to the call via the websites of
Markel and Alterra at and, respectively.

About Markel Corporation:
Markel Corporation is a diverse financial holding company serving a variety of
niche markets. The Company's principal business markets and underwrites
specialty insurance products.In each of the Company's businesses, it seeks to
provide quality products and excellent customer service so that it can be a
market leader.The financial goals of the Company are to earn consistent
underwriting and operating profits and superior investment returns to build
shareholder value. Visit Markel Corporation on the web at

About Alterra Capital Holdings Limited:
Alterra Capital Holdings Limited is a global enterprise dedicated to providing
diversified specialty insurance and reinsurance products to corporations,
public entities, and property and casualty insurers. Visit Alterra on the web

This release includes statements about future economic performance, finances,
expectations, plans and prospects of Alterra and Markel, both individually and
on a combined basis, that are forward-looking statements for purposes of the
safe harbor provisions of the Private Securities Litigation Reform Act of
1995. There are risks and uncertainties that could cause actual results to
differ materially from those expressed in or suggested by such statements. For
further information regarding factors affecting future results of Alterra and
Markel, please refer to their Annual Report on Form 10-K for the year ended
December 31, 2011 and Quarterly Reports on Form 10-Q and other documents filed
by Alterra and Markel since March 1, 2012 with the Securities Exchange
Commission ("SEC"). These documents are also available free of charge, in the
case of Alterra, by directing a request to Alterra through Joe Roberts, Chief
Financial Officer, or Susan Spivak Bernstein, Senior Vice President, Investor
Relations, at 441-295-8800 and, in the case of Markel, by directing a request
to Bruce Kay, Investor Relations, at 804-747-0136. Neither Alterra nor Markel
undertakes any obligation to update or revise publicly any forward-looking
statement whether as a result of new information, future developments or

This release contains certain forward-looking statements within the meaning of
the U.S. federal securities laws. Statements that are not historical facts,
including statements about Alterra's and Markel's beliefs, plans or
expectations, are forward-looking statements. These statements are based on
Alterra's or Markel's current plans, estimates and expectations. Some
forward-looking statements may be identified by use of terms such as
"believe," "anticipate," "intend," "expect," "project," "plan," "may,"
"should," "could," "will," "estimate," "predict," "potential," "continue," and
similar words, terms or statements of a future or forward-looking nature. In
light of the inherent risks and uncertainties in all forward-looking
statements, the inclusion of such statements in this release should not be
considered as a representation by Alterra, Markel or any other person that
Alterra's or Markel's objectives or plans, both individually and on a combined
basis, will be achieved. A non-exclusive list of important factors that could
cause actual results to differ materially from those in such forward-looking
statements includes the following: (a) the occurrence of natural or man-made
catastrophic events with a frequency or severity exceeding expectations; (b)
the adequacy of loss reserves and the need to adjust such reserves as claims
develop over time; (c) the failure of any of the loss limitation methods the
parties employ; (d) any adverse change in financial ratings of either company
or their subsidiaries; (e) the effect of competition on market trends and
pricing; (f) cyclical trends, including with respect to demand and pricing in
the insurance and reinsurance markets; (g) changes in general economic
conditions, including changes in interest rates and/or equity values in the
United States of America and elsewhere; and (h) other factors set forth in
Alterra's and Markel's recent reports on Form 10-K, Form 10-Q and other
documents filed with the SEC by Alterra and Markel.

Risks and uncertainties relating to the proposed transaction include the risks
that: (1) the parties will not obtain the requisite shareholder or regulatory
approvals for the transaction; (2) the anticipated benefits of the transaction
will not be realized or the parties may experience difficulties in
successfully integrating the two companies; (3) the parties may not be able to
retain key personnel; (4) the conditions to the closing of the proposed merger
may not be satisfied or waived; (5) the outcome of any legal proceedings to
the extent initiated against Alterra or Markel or its respective directors and
officers following the announcement of the proposed merger is uncertain; (6)
the acquisition may involve unexpected costs; and (7) the businesses may
suffer as a result of uncertainty surrounding the acquisition. These risks, as
well as other risks of the combined company and its subsidiaries may be
different from what the companies expect, or have previously experienced, and
each party's management may respond differently to any of the aforementioned
factors. These risks, as well as other risks associated with the merger, will
be more fully discussed in the joint proxy statement/prospectus that will be
included in the Registration Statement on Form S-4 to be filed by Alterra and
Markel with the SEC. Readers are cautioned not to place undue reliance on any
forward-looking statements, which speak only as of the date on which they are


This release relates to a proposed transaction between Alterra and Markel that
will become the subject of a registration statement, which will include a
joint proxy statement/prospectus, to be filed by Alterra and Markel with the
SEC. This material is not a substitute for the joint proxy
statement/prospectus that Alterra and Markel will file with the SEC or any
other document that Alterra or Markel may file with the SEC or Alterra or
Markel may send to its shareholders in connection with the proposed
ABOUT THE PROPOSED MERGER. All documents, when filed, will be available free
of charge at the SEC's website ( or, in the case of Alterra, by
directing a request to Joe Roberts, Chief Financial Officer, or Susan Spivak
Bernstein, Senior Vice President, Investor Relations, at 441-295-8800 and, in
the case of Markel, by directing a request to Bruce Kay, Investor Relations,
at 804-747-0136].


Alterra and Markel and their respective directors and executive officers may
be deemed to be participants in any solicitation of proxies from both
Alterra's and Markel's shareholders in favor of the proposed transaction.
Information about Alterra's directors and executive officers and their
ownership in Alterra common stock is available in the proxy statement dated
March 26, 2012 for Alterra's 2012 annual general meeting of shareholders.
Information about Markel's directors and executive officers and their
ownership of Markel common stock is available in the proxy statement dated
March 16, 2012 for Markel's 2012 annual general meeting of shareholders.

SOURCE Markel Corporation

Contact: Markel Corporation, Bruce Kay, +1-804-747-0136,;
Alterra Capital Holdings Limited, Susan Spivak Bernstein, +1-212-898-6640,
Senior Vice President, or Kekst and Company, Peter
Hill, +1-212-521-4800,
Press spacebar to pause and continue. Press esc to stop.