IPG Photonics (IPGP) insider discloses December 2025 stock sales

Rhea-AI Filing Summary

IPG Photonics Corp reported that a company insider sold several blocks of common stock in mid-December 2025. On December 15, 2025, the insider sold 39,384 shares at a weighted average price of $77.63 per share, in transactions ranging from $77.11 to $78.09.

On December 16, 2025, additional sales of 13,544 shares at a weighted average price of $76.59 (range $76.04 to $77.03), 12,160 shares at $77.44 (range $77.04 to $78.02), and 1,412 shares at $78.22 (range $78.08 to $78.43) were reported. The sales were made under a Rule 10b5-1 trading plan adopted on June 13, 2025, and after these transactions the insider beneficially owned 6,859,599 shares of IPG Photonics common stock directly.

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).

X

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^*

Valentin Gapontsev Trust I

(Last) (First) (Middle)

3 EXECUTIVE PARK DRIVE, SUITE 302

(Street)

BEDFORD NH 03110

(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	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
12/15/2025

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	12/15/2025		S		39,384	D(1)	$77.63(2)	6,886,715	D
Common Stock	12/16/2025		S		13,544	D(1)	$76.59(3)	6,873,171	D
Common Stock	12/16/2025		S		12,160	D(1)	$77.44(4)	6,861,011	D
Common Stock	12/16/2025		S		1,412	D(1)	$78.22(5)	6,859,599	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. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 13, 2025.

2. The reported transaction involves sale transactions ranging from $77.11 to $78.09 per share. The weighted average price per share was $77.63. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

3. The reported transaction involves sale transactions ranging from $76.04 to $77.03 per share. The weighted average price per share was $76.59. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

4. The reported transaction involves sale transactions ranging from $77.04 to $78.02 per share. The weighted average price per share was $77.44. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

5. The reported transaction involves sale transactions ranging from $78.08 to $78.43 per share. The weighted average price per share was $78.22. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

Remarks:

	/s/ Adam N. King, Attorney-in-Fact for Valentin Gapontsev Trust I	12/16/2025
	** 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 insider transactions did IPG Photonics (IPGP) report in this Form 4?

The Form 4 reports that an insider of IPG Photonics Corp sold multiple blocks of common stock on December 15 and 16, 2025, totaling several separate sale transactions at different prices and share amounts.

On what dates and at what prices did the IPG Photonics insider sell shares?

On December 15, 2025, the insider sold 39,384 shares at a weighted average price of $77.63, with trades between $77.11 and $78.09. On December 16, 2025, the insider sold 13,544 shares at $76.59 (range $76.04–$77.03), 12,160 shares at $77.44 (range $77.04–$78.02), and 1,412 shares at $78.22 (range $78.08–$78.43).

How many IPG Photonics (IPGP) shares does the insider own after these sales?

Following the reported transactions, the insider beneficially owned 6,859,599 shares of IPG Photonics common stock, held with direct ownership.

Were the IPG Photonics insider sales made under a Rule 10b5-1 plan?

Yes. The explanation states that the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 13, 2025.

Does this Form 4 report any derivative securities for IPG Photonics (IPGP)?

No derivative securities are reported. Table II, which would list options, warrants, or other derivatives, contains no reported derivative transactions.

What type of ownership is indicated for the remaining IPG Photonics shares?

The 6,859,599 remaining shares of IPG Photonics common stock are reported as held with direct (D) ownership by the insider.