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 *
  GEWIESE BERND
 2. Date of Event Requiring Statement (Month/Day/Year)
02/11/2013		 3. Issuer Name and Ticker or Trading Symbol
BRUKER CORP [BRKR]
(Last)
(First)
(Middle)
BRUKER CORPORATION, 40 MANNING ROAD		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
President, Bruker BioSpin Corp
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

BILLERICA, MA 01821		 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 230
I
By spouse

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
Stock option - right to purchase   (1) 05/07/2018 Common Stock 50,000 $ 12.01 D  
Stock option - right to purchase   (2) 03/09/2020 Common Stock 25,000 $ 13.95 D  
Stock option - right to purchase   (3) 08/19/2021 Common Stock 17,500 $ 12.73 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
GEWIESE BERND
BRUKER CORPORATION
40 MANNING ROAD
BILLERICA, MA 01821		       President, Bruker BioSpin Corp  

Signatures

/s/ Constance Andrews, Attorney-in-Fact 02/20/2013
**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) Options to purchase 40,000 shares of common stock are currently vested and exercisable. Options to purchase 10,000 shares vest on May 7, 2013.
(2) Options to purchase 10,000 shares of common stock are currently vested and exercisable. Options to purchase 5,000 shares vest on each of March 9, 2013, March 9, 2014 and March 9, 2015.
(3) Options to purchase 3,500 shares of common stock are currently vested and exercisable. Options to purchase 3,500 shares vest on each of August 19, 2013, August 19, 2014, August 19, 2015 and August 19, 2016.
 
Remarks:
Exhibit List:Exhibit 24 - Power of Attorney

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