UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G/A

o

Rule 13d-1(b)

o

Rule 13d-1(c)

x

Rule 13d-1(d)

CUSIP No. 116794108

1.

Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only)

Frank H. Laukien

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
Germany (Permanent U.S. resident)

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
Approximately 19,247,588 shares

6.

Shared Voting Power
0

7.

Sole Dispositive Power
Approximately 18,183,312 shares

8.

Shared Dispositive Power
1,064,276 shares

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
Approximately 19,247,588 shares

10.

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
18.9%

12.

Type of Reporting Person (See Instructions)
IN

Item 1.

(a)

Name of Issuer
Bruker BioSciences Corporation

(b)

Address of Issuer’s Principal Executive Offices

40 Manning Road
Billerica, MA  01821

Item 2.

(a)

Name of Person Filing
Frank H. Laukien

(b)

Address of Principal Business Office or, if none, Residence
40 Manning Road
Billerica, MA  01821

(c)

Citizenship
Germany (U.S. resident)

(d)

Title of Class of Securities
Common Stock, par value $0.01 per share.

(e)

CUSIP Number
116794108

Item 3.

If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
Not applicable.

(a)

o

Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b)

o

Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c)

o

Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d)

o

Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C 80a-8).

(e)

o

An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);

(f)

o

An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);

(g)

o

A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h)

o

A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

o

A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

o

Group, in accordance with §240.13d-1(b)(1)(ii)(J).

Item 4.

Ownership

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

(a)

Amount beneficially owned:   

19,247,588 shares

(b)

Percent of class:   

18.9%

(c)

Number of shares as to which the person has:

(i)

Sole power to vote or to direct the vote   

19,247,588 shares

(ii)

Shared power to vote or to direct the vote    

0

(iii)

Sole power to dispose or to direct the disposition of   

18,183,312 shares

(iv)

Shared power to dispose or to direct the disposition of   

1,064,276 shares

Item 5.

Ownership of Five Percent or Less of a Class

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following   o.
Not applicable.

Item 6.

Ownership of More than Five Percent on Behalf of Another Person

Not applicable.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person
Not applicable.

Item 8.

Identification and Classification of Members of the Group
Not applicable.

Item 9.

Notice of Dissolution of Group
Not applicable.

Item 10.

Certification
Not applicable.

July 1, 2006

Date

/s/ Frank H. Laukien

Signature

Frank H. Laukien

Name/Title