Bruker (BRKR) Exec VP Mark Munch RSU Tax-Withholdings Reduced Holdings

Rhea-AI Filing Summary

Mark Munch, Executive Vice President and President of Bruker Nano Inc., reported three non-derivative transactions in Bruker Corporation (BRKR) common stock related to restricted stock unit vesting. The Form 4 shows shares were withheld to satisfy tax withholding obligations: 1,340 shares on 08/09/2025 at $30.43, 1,107 shares on 08/10/2025 at $30.43, and 1,279 shares on 08/11/2025 at $30.78. Each transaction is reported as a direct ownership change and coded as F with the company’s explanation confirming tax withholding for RSU vesting.

Following these withholdings, the reported direct beneficial ownership amounts after each transaction were 107,198, 106,091 and 104,812 shares respectively, reflecting a total of 3,726 shares withheld across the three dates.

Insights

Financial Analyst

Routine RSU tax-withholding transactions; minimal market impact.

The filings document standard tax-withholding disposals tied to restricted stock unit vesting rather than voluntary sales. The amounts withheld (total 3,726 shares) are small relative to institutional float and are disclosed as direct ownership reductions. Prices reported ($30.43 and $30.78) simply reflect withholding valuation; there is no indication of opportunistic selling or change in strategic ownership. For investors, this is a routine insider reporting item without new operational or financial signals.

Corporate Governance Expert

Disclosure aligns with Section 16 requirements; no governance red flags.

The Form 4 attributes the disposals to tax-withholding on RSU vesting and lists the reporter’s role as Executive VP and President of Bruker Nano Inc., with direct beneficial ownership reported after each transaction. The clear explanation and itemized reporting across three consecutive dates demonstrate compliance with insider reporting norms. No unusual patterns, amendments, or indirect ownership issues are evident in the provided content.

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

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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^*

Munch Mark

(Last) (First) (Middle)

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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EXEC VP&PRES BRUKER NANO INC.

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		1,340(1)	D	$30.43	107,198	D
Common Stock	08/10/2025		F		1,107(1)	D	$30.43	106,091	D
Common Stock	08/11/2025		F		1,279(1)	D	$30.78	104,812	D

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 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 did Bruker (BRKR) insider Mark Munch report on Form 4?

The Form 4 reports three share withholdings to satisfy tax obligations from RSU vesting, totaling 3,726 shares across three transactions.

How many shares were withheld and what were the prices?

Withholdings were 1,340 shares at $30.43, 1,107 shares at $30.43, and 1,279 shares at $30.78.

What was Mark Munch's reported beneficial ownership after the transactions?

The reported direct beneficial ownership amounts after the transactions were 107,198, 106,091, and 104,812 shares respectively.

What is the stated reason for these transactions?

The explanation on the Form states these represent shares withheld by the company to satisfy tax withholding obligations in connection with the vesting of restricted stock units previously granted.

Does the Form 4 show indirect ownership or joint filings?

All reported ownership is shown as Direct (D) and the form indicates it was filed by one reporting person.