IPG Photonics holder sells 27K shares in plan

Q: What insider transactions did IPGP report in this Form 4?

IPG Photonics reported that Valentin Gapontsev Trust I sold a total of 27,397 shares of Common Stock in three open-market transactions on September 1–2, 2026, at weighted average prices in the mid‑$70s per share, under a Rule 10b5-1 trading plan.

Q: How many IPGP shares were sold by Valentin Gapontsev Trust I and on which dates?

Valentin Gapontsev Trust I sold 27,397 IPGP shares in total: 18,091 shares on September 1, 2026, and two sales totaling 9,306 shares on September 2, 2026, as reported in the Form 4.

Q: At what prices were the IPGP shares sold in this Form 4?

The reported weighted average sale prices were $75.14 per share for 18,091 shares on September 1, 2026; $75.65 per share for 4,591 shares on September 2, 2026; and $76.25 per share for 4,715 shares on September 2, 2026, each within disclosed intraday price ranges.

Q: Were the IPGP insider sales made under a Rule 10b5-1 trading plan?

Yes. The Form 4 states that the sales by Valentin Gapontsev Trust I were effected pursuant to a Rule 10b5-1 trading plan adopted on March 17, 2026, and the Rule 10b5-1 checkbox is affirmed.

Q: Who is the reporting person in this IPGP Form 4 and what is their status?

The reporting person is Valentin Gapontsev Trust I, identified in the filing as a ten percent owner of IPG Photonics Corp. The Form 4 does not list the trust as a director or officer of the company.

IPG PHOTONICS CORP (IPGP) reported that Valentin Gapontsev Trust I, a ten percent owner, sold an aggregate of 27,397 shares of Common Stock in open-market transactions on September 1–2, 2026.

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Rhea-AI Filing Summary

IPG PHOTONICS CORP (IPGP) reported that Valentin Gapontsev Trust I, a ten percent owner, sold an aggregate of 27,397 shares of Common Stock in open-market transactions on September 1–2, 2026. The sales, executed at weighted average prices around the mid‑$70s per share, were made pursuant to a Rule 10b5-1 trading plan adopted on March 17, 2026.

Insider Trade Summary 10b5-1

Net Seller: 27,397 shares

Net Sell 3 txns

Insider Valentin Gapontsev Trust I

Role 10% Owner

Sold 27,397 shs ($2.07M)

Type	Security	Shares	Price	Value
Sale	Common Stock ^{F3, F1}	4,591	$75.65	$347K
Sale	Common Stock ^{F4, F1}	4,715	$76.25	$360K
Sale	Common Stock ^{F2, F1}	18,091	$75.14	$1.36M

Holdings After Transaction: Common Stock — 6,642,886 shares (Direct)

Footnotes (4)

F1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 17, 2026.
F2. The reported transaction involves sale transactions ranging from $75.00 to $75.73 per share. The weighted average price per share was $75.14. 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.
F3. The reported transaction involves sale transactions ranging from $75.00 to $75.89 per share. The weighted average price per share was $75.65. 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.
F4. The reported transaction involves sale transactions ranging from $76.00 to $76.81 per share. The weighted average price per share was $76.25. 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.

Key Figures

Total shares sold: 27,397 shares Shares sold on September 1, 2026: 18,091 shares Shares sold on September 2, 2026 (lot 1): 4,591 shares +2 more

5 metrics

Total shares sold 27,397 shares Aggregate Common Stock sales reported for September 1–2, 2026

Shares sold on September 1, 2026 18,091 shares Common Stock sale at a weighted average price of $75.14 per share

Shares sold on September 2, 2026 (lot 1) 4,591 shares Common Stock sale at a weighted average price of $75.65 per share

Shares sold on September 2, 2026 (lot 2) 4,715 shares Common Stock sale at a weighted average price of $76.25 per share

Rule 10b5-1 plan adoption date March 17, 2026 Date the trading plan covering these sales was adopted

Key Terms

Rule 10b5-1 trading plan, weighted average price per share, ten percent owner

3 terms

Rule 10b5-1 trading plan regulatory

"sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

ten percent owner regulatory

"Valentin Gapontsev Trust I is identified as a ten percent owner"

FAQ

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What insider transactions did IPGP report in this Form 4?

IPG Photonics reported that Valentin Gapontsev Trust I sold a total of 27,397 shares of Common Stock in three open-market transactions on September 1–2, 2026, at weighted average prices in the mid‑$70s per share, under a Rule 10b5-1 trading plan.

How many IPGP shares were sold by Valentin Gapontsev Trust I and on which dates?

Valentin Gapontsev Trust I sold 27,397 IPGP shares in total: 18,091 shares on September 1, 2026, and two sales totaling 9,306 shares on September 2, 2026, as reported in the Form 4.

At what prices were the IPGP shares sold in this Form 4?

The reported weighted average sale prices were $75.14 per share for 18,091 shares on September 1, 2026; $75.65 per share for 4,591 shares on September 2, 2026; and $76.25 per share for 4,715 shares on September 2, 2026, each within disclosed intraday price ranges.

Were the IPGP insider sales made under a Rule 10b5-1 trading plan?

Yes. The Form 4 states that the sales by Valentin Gapontsev Trust I were effected pursuant to a Rule 10b5-1 trading plan adopted on March 17, 2026, and the Rule 10b5-1 checkbox is affirmed.

Who is the reporting person in this IPGP Form 4 and what is their status?

The reporting person is Valentin Gapontsev Trust I, identified in the filing as a ten percent owner of IPG Photonics Corp. The Form 4 does not list the trust as a director or officer of the company.

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Available on EDGAR 09/03/2026 - 04:31 PM EDT Accepted by SEC EDGAR 09/03/2026 - 04:23 PM EDT

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^*

Valentin Gapontsev Trust I

(Last)

(First)

(Middle)

3 EXECUTIVE PARK DRIVE, SUITE 302

(Street)

BEDFORD

NEW HAMPSHIRE

03110

(City)

(State)

(Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/01/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	09/01/2026		S		18,091	D⁽¹⁾	$75.14⁽²⁾	6,652,192	D
Common Stock	09/02/2026		S		4,591	D⁽¹⁾	$75.65⁽³⁾	6,647,601	D
Common Stock	09/02/2026		S		4,715	D⁽¹⁾	$76.25⁽⁴⁾	6,642,886	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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 March 17, 2026.

2. The reported transaction involves sale transactions ranging from $75.00 to $75.73 per share. The weighted average price per share was $75.14. 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 $75.00 to $75.89 per share. The weighted average price per share was $75.65. 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 $76.00 to $76.81 per share. The weighted average price per share was $76.25. 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	09/03/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR