UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 23) *

Bruker Corporation

(Name of Issuer)

Common Stock

(Title of Class of Securities)

116794108

(CUSIP Number) 

December 31, 2021

(Date of Event Which Requires Filing of this Statement) 

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

¨ Rule 13d-1(b)

x Rule 13d-1(c)

¨ Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

   CUSIP NO. 116794108 13G Page 2 of 5

1	NAME OF REPORTING PERSONS Joerg C. Laukien
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) ¨ (b) ¨
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Germany

NUMBER OF  SHARES  BENEFICIALLY  OWNED BY  EACH  REPORTING  PERSON  WITH	5	SOLE VOTING POWER 7,515,769 shares
	6	SHARED VOTING POWER  0
	7	SOLE DISPOSITIVE POWER 7,515,769 shares
	8	SHARED DISPOSITIVE POWER  0

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,515,769 shares
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions)
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 4.96%
12	TYPE OF REPORTING PERSON (See Instructions) IN

   CUSIP NO. 116794108 13G Page 3 of 5

Item 1 (a). Name of Issuer: Bruker Corporation

Item 1 (b). Address of Issuer’s Principal Executive Offices:

40 Manning Road

Billerica, MA 01821

Item 2 (a). Name of Person Filing: Joerg C. Laukien

Item 2 (b). Address of Principal Business Office or, if none, Residence:

Markgrafenstrasse 34
76530 Baden-Baden
Germany

Item 2 (c). Citizenship: Germany

Item 2 (d). Title of Class of Securities: Common Stock, par value $0.01 per share.

Item 2 (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) ¨ Broker or dealer registered under Section 15 of the Act (15 U.S.C. 78o);

(b) ¨ Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c);

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

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

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

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

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

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

(i) ¨  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) ¨ A non-U.S. institution in accordance with §240.13d-1(b)(1)(ii)(J);

(k) ¨ Group, in accordance with §240.13d-1(b)(1)(ii)(K).

   CUSIP NO. 116794108 13G Page 4 of 5

Item 4. Ownership

(a) Amount beneficially owned: 7,515,769 shares

(b) Percent of class: 4.96%

(c) Number of shares as to which such person has:

(i)	Sole power to vote or to direct the vote	7,515,769 shares
(ii)	Shared power to vote or to direct the vote	0
(iii)	Sole power to dispose or to direct the disposition of	7,515,769 shares
(iv)	Shared power to dispose or to direct the disposition of	0

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 x.

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

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

   CUSIP NO. 116794108 13G Page 5 of 5

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: January 24, 2022

/s/ Joerg C. Laukien

Joerg C. Laukien