UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

     
Date of Report (Date of Earliest Event Reported):   May 16, 2012

Alterra Capital Holdings Limited
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(Exact name of registrant as specified in its charter)

     
Bermuda 000-33047 98-0584464
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(State or other jurisdiction
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(Commission
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(I.R.S. Employer
of incorporation) File Number) Identification No.)
      
Alterra House, 2 Front Street, Hamilton, Bermuda   HM 11
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(Address of principal executive offices)
  ___________
(Zip Code)
     
Registrant’s telephone number, including area code:   (441) 295-8800

Not Applicable
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Former name or former address, if changed since last report

 

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

[  ]  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
[  ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
[  ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
[  ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))


Item 8.01 Other Events.

On May 16, 2012, the Registrant's President and Chief Executive Officer, W. Marston Becker, established a Rule 10b5-1 trading plan (the "Trading Plan") for the sale, subject to minimum market price thresholds, of up to 50,000 shares of the Registrant's common stock. The Trading Plan is part of Mr. Becker's personal tax planning strategy. Sales under the Trading Plan will commence no earlier than June 15, 2012 and the Trading Plan terminates on December 31, 2012.






SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

         
    Alterra Capital Holdings Limited
          
May 18, 2012   By:   Peter A. Minton
       
        Name: Peter A. Minton
        Title: Executive Vice President and Chief Operating Officer