Washington, D.C. 20549


Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934 (Amendment No. )


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     Preliminary Proxy Statement


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     Definitive Proxy Statement


     Definitive Additional Materials


     Soliciting Material under §240.14a-12
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On May 3, 2011, the Board of Directors of CIRCOR International, Inc. (the “Company”) resolved that the Company would either put its Shareholder Rights Agreement, dated September 23, 2009 (the “Rights Agreement”), to a vote at the Company’s 2012 Annual Meeting of Stockholders, or terminate the Rights Agreement in advance of such stockholder meeting.

Important Information

In connection with the solicitation of proxies, on March 18, 2011, the Company filed a definitive proxy statement with the Securities and Exchange Commission (the “SEC”) in connection with the Company’s 2011 Annual Meeting of Stockholders (the “Proxy Statement”). THE COMPANY’S STOCKHOLDERS ARE STRONGLY ADVISED TO READ THE DEFINITIVE PROXY MATERIALS AND ANY OTHER RELEVANT MATERIALS FILED BY THE COMPANY WITH THE SEC BEFORE MAKING ANY VOTING OR INVESTMENT DECISION BECAUSE THESE DOCUMENTS CONTAIN IMPORTANT INFORMATION. The Proxy Statement and any other materials filed by the Company with the SEC can be obtained free of charge at the SEC’s website at The Company’s definitive proxy materials, including the Proxy Statement, are also available for free from the Company at You may request paper copies of the Company’s definitive proxy materials from the Company’s transfer agent, American Stock Transfer & Trust Company, by telephone at 888-Proxy-NA (888-776-9962) and 718-921-8562 (for international callers) or by email at The contents of the websites referenced above are not deemed to be incorporated by reference into the Proxy Statement. If you have any questions or need assistance voting your shares, please contact MacKenzie Partners, Inc., the Company’s proxy solicitor, at (800) 322-2885 or (212) 929-5500 (call collect) or at

The Company and its directors, nominees and executive officers may be deemed to be participants in the solicitation of proxies from the stockholders of the Company in connection with the Company’s 2011 Annual Meeting of Stockholders. Information concerning the interests of participants in the solicitation of proxies is included in the Proxy Statement.