Bruker CEO reports tax-withholding share dispositions

BRUKER CORP President & CEO Frank H. Laukien reported two Form 4 transactions involving common stock used to cover taxes on equity compensation.

Rhea-AI Filing Summary

BRUKER CORP President & CEO Frank H. Laukien reported two Form 4 transactions involving common stock used to cover taxes on equity compensation. On 2026-08-10, 4,564 shares were withheld at $56.32 per share, and on 2026-08-09, 2,361 shares were withheld at $53.41 per share. A footnote states these shares were withheld by the company to satisfy tax withholding obligations arising from the vesting of previously granted restricted stock units, rather than sold in open-market trades. The filing also lists several indirect ownership positions held through or for family members, including 336,607 shares held indirectly by a daughter after the reported date.

Insider Trade Summary

Tax Withholding: 6,925 shares

Tax Withholding 9 txns

Insider LAUKIEN FRANK H

Role PRESIDENT & CEO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1	4,564	$56.32	$257K
Tax Withholding	Common Stock F1	2,361	$53.41	$126K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 38,487,178 shares (Direct); Common Stock — 1,056,682 shares (Indirect, By Former Spouse); Common Stock — 337,359 shares (Indirect, By Son); Common Stock — 336,607 shares (Indirect, By Daughter); Common Stock — 273,430 shares (Indirect, As UTMA Custodian for Son)

Footnotes (1)

1. F1. 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.

Key Figures

Shares withheld for taxes (2026-08-10): 4,564 shares at $56.32 Shares withheld for taxes (2026-08-09): 2,361 shares at $53.41 Total shares for tax withholding: 6,925 shares +1 more

4 metrics

Shares withheld for taxes (2026-08-10) 4,564 shares at $56.32 Common stock withheld to satisfy tax withholding obligations

Shares withheld for taxes (2026-08-09) 2,361 shares at $53.41 Common stock withheld to satisfy tax withholding obligations

Total shares for tax withholding 6,925 shares Exercise price or tax liability related dispositions per Form 4 summary

Indirect holdings by daughter 336,607 shares Total common stock held indirectly by daughter following reported date

Key Terms

restricted stock units, tax withholding obligations, indirect ownership, UTMA Custodian

4 terms

restricted stock units financial

"vesting of restricted stock units previously granted to the reporting person"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"shares withheld by the Company to satisfy tax withholding obligations"

indirect ownership financial

"indirect ownership positions held through or for family members"

UTMA Custodian financial

"nature_of_ownership "As UTMA Custodian for Son""

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did BRKR CEO Frank H. Laukien report in this Form 4?

Frank H. Laukien reported two transactions where Bruker withheld common shares to cover tax obligations from vesting restricted stock units, along with updated indirect family holdings information.

How many BRKR shares were withheld for taxes in the reported transactions?

A total of 6,925 common shares were withheld for tax purposes: 4,564 shares on 2026-08-10 and 2,361 shares on 2026-08-09, according to the Form 4 summary.

Were the BRKR Form 4 transactions open-market sales by the CEO?

No. A footnote explains the transactions represent shares withheld by the company to satisfy tax withholding obligations on vesting restricted stock units, not discretionary open-market sales.

At what prices were BRKR shares withheld in the CEO’s tax transactions?

Shares were withheld at $56.32 per share on 2026-08-10 and $53.41 per share on 2026-08-09, reflecting the price used for these tax-withholding share dispositions.

What indirect BRKR holdings related to Frank H. Laukien are disclosed?

The Form 4 lists indirect holdings by family members, including 336,607 common shares held indirectly through a daughter, as well as positions held by a son, former spouse, and as UTMA custodian.

Does this BRKR Form 4 indicate a Rule 10b5-1 trading plan?

The filing’s data show the Rule 10b5-1 checkbox is not marked as affirmatively checked, and the transactions are described as tax withholding related to restricted stock unit vesting.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 08/11/2026 - 04:16 PM Accepted by SEC EDGAR 08/11/2026 - 04:15 PM Learn about SEC filing dates

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
Estimated average burden
hours per response:			0.5

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 MASSACHUSETTS 01821

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/09/2026

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

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

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

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	08/09/2026		F		2,361(1)	D	$53.41	38,491,742	D
Common Stock	08/10/2026		F		4,564(1)	D	$56.32	38,487,178	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/ Betsy Eberg, Attorney-in-Fact	08/11/2026
	** 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.
* Form 4: SEC 1474 (03-26)