Valentin Gapontsev Trust I - 21 Jul 2026 Form 4 Insider Report for IPG PHOTONICS CORP (IPGP)

Reporting relationship: 10%+ Owner
Issuer ticker: IPGP
Reported as of: 21 Jul 2026
Net transaction value: -$5,761,475
SEC form: 4
Accepted by SEC: 22 Jul 2026, 16:12:06 UTC
Prior SEC filing: 18 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Adam N. King, Attorney-in-Fact for Valentin Gapontsev Trust I

Key filing fact

Valentin Gapontsev Trust I filed Form 4 for IPG PHOTONICS CORP (IPGP) on 22 Jul 2026.

Key facts

This page summarizes Valentin Gapontsev Trust I's Form 4 filing for IPG PHOTONICS CORP (IPGP).
4 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 22 Jul 2026, 16:12.

Change

Previous filing in this sequence was filed on 18 Feb 2026.
Current net transaction value: -$5,761,475.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001508155 Primary reporting owner

Valentin Gapontsev Trust I

Relationship: 10%+ Owner
Address: 3 EXECUTIVE PARK DRIVE, SUITE 302, BEDFORD
Signature: /s/ Adam N. King, Attorney-in-Fact for Valentin Gapontsev Trust I
Signature date: 22 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

IPGP transaction

Common Stock

Sale

Transaction value: $100,080
Shares: -1,000
Change %: -0.01%
Price: $100.08
Shares after: 6,725,599
Date: 21 Jul 2026
Ownership: Direct
Footnotes: F1, F2

IPGP transaction

Common Stock

Sale

Transaction value: $718,520
Shares: -7,100
Change %: -0.11%
Price: $101.20
Shares after: 6,718,499
Date: 21 Jul 2026
Ownership: Direct
Footnotes: F1, F3

IPGP transaction

Common Stock

Sale

Transaction value: $2,484,368
Shares: -24,347
Change %: -0.36%
Price: $102.04
Shares after: 6,694,152
Date: 21 Jul 2026
Ownership: Direct
Footnotes: F1, F4

IPGP transaction

Common Stock

Sale

Transaction value: $2,458,507
Shares: -23,869
Change %: -0.36%
Price: $103.00
Shares after: 6,670,283
Date: 21 Jul 2026
Ownership: Direct
Footnotes: F1, F5

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 5 footnotes

Footnote 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.

Footnote F2

The reported transaction involves sale transactions ranging from $99.84 to $100.57 per share. The weighted average price per share was $100.08. 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.

Footnote F3

The reported transaction involves sale transactions ranging from $100.99 to $101.98 per share. The weighted average price per share was $101.20. 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.

Footnote F4

The reported transaction involves sale transactions ranging from $102.00 to $102.94 per share. The weighted average price per share was $102.04. 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.

Footnote F5

The reported transaction involves sale transactions ranging from $103.00 to $103.13 per share. The weighted average price per share was $103.00. 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.