IPG Photonics officer reports tax share withholding

IPG Photonics Corp executive Mary E. Buttarazzi reported a tax-related share disposition.

Rhea-AI Filing Summary

IPG Photonics Corp executive Mary E. Buttarazzi reported a tax-related share disposition. On March 1, 2026, 435 shares of common stock were withheld at $131.57 per share to cover taxes on vested restricted stock units. After this withholding, she directly held 5,249 common shares.

Insider Trade Summary

Exercise Price or Tax Liability: 435 shares

Exercise Price or Tax Liability 1 txn

Insider Buttarazzi Mary E.

Role VP, Corp Controller and CAO

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	435	$131.57	$57K

Holdings After Transaction: Common Stock — 5,249 shares (Direct)

Footnotes (1)

1. F1. Represents shares withheld to cover taxes for restricted stock units which have vested.

FAQ

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

What insider transaction did IPGP officer Mary Buttarazzi report?

Mary E. Buttarazzi reported a tax-withholding disposition of 435 IPG Photonics common shares. The shares were withheld to cover taxes due on restricted stock units that vested, rather than sold in an open-market transaction.

How many IPG Photonics (IPGP) shares were withheld for taxes?

A total of 435 IPG Photonics common shares were withheld for taxes. The withholding occurred in connection with restricted stock units that vested, using shares instead of cash to satisfy the related tax liability.

At what price were the withheld IPGP shares valued in the Form 4?

The withheld shares were valued at $131.57 per IPG Photonics share. This price is used in the Form 4 to calculate the value of the 435 shares applied toward the reporting person’s tax obligation on vested restricted stock units.

How many IPGP shares does Mary Buttarazzi hold after this transaction?

Following the tax-withholding disposition, Mary E. Buttarazzi directly holds 5,249 IPG Photonics common shares. This figure reflects her remaining ownership after 435 shares were withheld to satisfy taxes on newly vested restricted stock units.

Was the IPGP insider transaction a sale on the open market?

The transaction was not an open-market sale; it was a tax-withholding disposition. Shares were withheld by the issuer to cover taxes on vested restricted stock units, as described in the Form 4 footnote, rather than sold to third-party buyers.

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

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Accepted by SEC EDGAR 03/03/2026 - 04:35 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^*

Buttarazzi Mary E.

(Last) (First) (Middle)

C/O IPG PHOTONICS CORPORATION

377 SIMARANO DRIVE

(Street)

MARLBOROUGH MA 01752

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
IPG PHOTONICS CORP [ IPGP ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP, Corp Controller and CAO

3. Date of Earliest Transaction (Month/Day/Year)
03/01/2026

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	03/01/2026		F		435(1)	D	$131.57	5,249	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 to cover taxes for restricted stock units which have vested.

Remarks:

	/s/ Adam N. King, Attorney-in-Fact	03/03/2026
	** 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.