Alterra Capital Holdings Limited (NASDAQ: ALTE; BSX: ALTE.BH) today announced that it will release Q3 2012 financial results after the market close on Tuesday, November 6, 2012. Alterra will hold a conference call with the investment community on Wednesday, November 7, 2012 to discuss these results and related matters.

President and Chief Executive Officer W. Marston (Marty) Becker and Executive Vice President and Chief Financial Officer Joe Roberts will represent Alterra on the call, the details of which are as follows:

Date: Wednesday, November 7, 2012
Time: 11:00 a.m. ET
Toll-free number (US callers): 866-700-7173
International callers: 617-213-8838

Access Code (all participants):15493660. Please dial in five to ten minutes prior to the start of the call.

In addition, interested persons may listen to the earnings call via Alterra's website: www.alterracap.com.

If you are unable to participate in the "live" call, a replay will be available from approximately 1:00 p.m. ET on November 7, 2012 until December 7, 2012. To listen to the replay, US-based callers may dial 1-888-286-8010 and international callers may use 1-617-801-6888; the access code for the replay is 31571407.

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.

Cautionary Note Regarding Forward-Looking Statements

Matters discussed on earnings call may include forward-looking statements that reflect Alterra's current views with respect to future events and financial performance. For further information regarding cautionary statements and factors affecting Alterra's future results, please refer to the most recent reports on Form 10-K and Form 10-Q and other documents filed by Alterra with the SEC.

Alterra Capital Holdings Limited
Investor:
Susan Spivak Bernstein, 1-212-898-6640
Senior Vice President
susan.spivak@alterra-bm.com
or
Press:
Kekst and Company
Peter J. Hill, 1-212-521-4800
peter-hill@kekst.com