Ownership Submission
FORM 3
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Dill Michael Ross
2. Date of Event Requiring Statement (Month/Day/Year)
04/25/2011
3. Issuer Name and Ticker or Trading Symbol
CIRCOR INTERNATIONAL INC [CIR]
(Last)
(First)
(Middle)
C/O CIRCOR INTERNATIONAL, INC., 25 CORPORATE DRIVE
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Group Vice President
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

BURLINGTON, MA 01803
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock (4) 391 (4)
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(Month/Day/Year)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stock Units (1) 03/01/2013(1) 03/01/2013(1) Common Stock 33 (1) $ (1) D  
Restricted Stock Units (2)   (2)   (2) Common Stock 1,596 $ (2) D  
Restricted Stock Units (3)   (3)   (3) Common Stock (3) 1,185 (3) $ (3) D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Dill Michael Ross
C/O CIRCOR INTERNATIONAL, INC.
25 CORPORATE DRIVE
BURLINGTON, MA 01803
      Group Vice President  

Signatures

Alan J. Glass, attorney-in-fact 04/27/2011
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The restricted stock units (RSUs) reported herein were granted to the reporting person under the issuer's Management Stock Purchase Program (MSPP). Under the MSPP, participants may elect in advance to defer a percentage of such participant's bonus into the receipt of RSUs at a 33% discount from the market price of the issuer's common stock on the date of award. These RSUs cliff vest after 3 years from the date of award and convert into shares of common stock on a 1 for 1 basis. The fair market price of the issuer's stock on the date of award was $30.91.
(2) The Restricted Stock Units (RSUs) granted herein are in connection with the Company's long-term incentive plan. The RSUs reported herein represent the remaining unvested 3/4 of the original grant of 2,128 RSUs. The original award vests in 4 equal installments on September 3, 2010, August 3, 2011, August 3, 2012, August 3, 2013 and convert into shares of common stock on a one-for-one basis unless the executive previously has selected a longer deferral period. Market price at time of grant $23.50
(3) The Restricted Stock Units (RSUs) granted herein are in connection with the Company's long-term incentive plan. The RSUs reported herein represent the original grant of 1,185 RSUs. The original award vests in 3 equal installments on March 28, 2012, February 28, 2013 and February 28, 2014 and convert into shares of common stock on a one-for-one basis unless the executive previously has selected a longer deferral period. Market price at time of grant $39.00.
(4) The Restricted Stock Units (RSUs), the conversion of which are reported herein, were granted to the reporting person by the issuer as part of the equity incentive grants made by the issuer on 08/03/2009. On that date the fair market value of a share of the issuer's stock was $23.50. The RSUs vest in equal portions over a 4 year period and are received by the reporting person upon vesting unless the reporting person has previously elected a longer deferral period. This report reflects the vesting of the first one-fourth of these RSUs, the acquisition by the reporting person of the underlying shares and the withholding by the issuer of sufficient shares to pay income taxes required to be withheld from the reporting person.

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