BRKR Insider: Frank Laukien Withholds 12,917 Shares to Cover RSU Taxes

Rhea-AI Filing Summary

Frank H. Laukien, President & CEO, Director and 10% owner of Bruker Corporation (BRKR), had restricted stock units vest and had 12,917 shares withheld across three dates to satisfy tax withholding: 3,422 shares on 08/09/2025 at $30.43, 4,657 shares on 08/10/2025 at $30.43, and 4,838 shares on 08/11/2025 at $30.78. The transactions are coded F, indicating company withholding rather than open-market sales.

Following the withholdings, his reported direct beneficial ownership was about 38.45 million shares (38,445,672 after the 08/11 transaction). The filing also lists indirect holdings including 1,055,639 shares by a former spouse and various family/UTMA holdings, showing structured family ownership but no additional dispositions reported.

Positive

• Insider complied with tax withholding via share retention on RSU vesting, showing administrative adherence to compensation plan terms.

Negative

• None.

Insights

Financial Analyst

TL;DR: Routine tax-withholding on vested RSUs; small, non-material reduction in direct holdings.

The Form 4 shows three F-coded transactions where 12,917 shares were withheld to cover taxes on vested restricted stock units. These withholdings are administrative and not open-market sales, leaving the reporting person with roughly 38.45 million direct shares. For most investors, this activity is immaterial to company valuation or control.

Corporate Governance Expert

TL;DR: Filing indicates compliance and transparency; no governance change or dilution signal.

The reporting person is identified as President & CEO, Director and a >10% owner, and the filing documents tax-related withholding rather than discretionary selling. The presence of indirect family and UTMA holdings is disclosed, supporting transparency around beneficial ownership structure. No departures, sales to third parties, or changes in control are reported.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

LAUKIEN FRANK H

(Last) (First) (Middle)

C/O BRUKER CORPORATION

40 MANNING ROAD

(Street)

BILLERICA MA 01821

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
BRUKER CORP [ BRKR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	PRESIDENT & CEO

3. Date of Earliest Transaction (Month/Day/Year)
08/09/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/09/2025		F		3,422(1)	D	$30.43	38,455,167	D
Common Stock	08/10/2025		F		4,657(1)	D	$30.43	38,450,510	D
Common Stock	08/11/2025		F		4,838(1)	D	$30.78	38,445,672	D
Common Stock								1,055,639	I	By Former Spouse
Common Stock								337,087	I	By Son
Common Stock								336,607	I	By Daughter
Common Stock								201,702	I	As UTMA Custodian for Son
Common Stock								71,728	I	As UTMA Custodian for Son
Common Stock								1,043	I	By Former Spouse
Common Stock								272	I	By Son

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents shares withheld by the Company to satisfy tax withholding obligations in connection with the vesting of restricted stock units previously granted to the Reporting Person.

	/s/ Michael A. Simone, Attorney-in-Fact	08/12/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What transactions did Frank H. Laukien report on Form 4 for BRKR?

The filing reports tax-withholding on vested RSUs totaling 12,917 shares across three dates: 3,422 shares on 08/09/2025 at $30.43; 4,657 shares on 08/10/2025 at $30.43; 4,838 shares on 08/11/2025 at $30.78.

Why were the shares withheld according to the Form 4?

The explanation states the shares were withheld by the company to satisfy tax withholding obligations in connection with the vesting of restricted stock units previously granted to the reporting person.

How many shares does Laukien beneficially own after these transactions?

Following the 08/11/2025 transaction, the reporting person’s direct beneficial ownership is reported as 38,445,672 shares. The filing also lists indirect holdings such as 1,055,639 shares by a former spouse and additional family/UTMA holdings.

Do these Form 4 entries represent open-market sales?

No. The transactions are coded F, indicating shares were withheld by the company for tax purposes rather than sold in the open market.

What roles and ownership status are disclosed for the reporting person on this Form 4?

The form identifies Frank H. Laukien as President & CEO, a Director, and a 10% owner of Bruker Corporation (BRKR).