Valentin Gapontsev Trust I - 15 Jan 2026 Form 4 Insider Report for IPG PHOTONICS CORP (IPGP)

Role
10%+ Owner
Signature
/s/ Adam N. King, Attorney-in-Fact for Valentin Gapontsev Trust I
Issuer symbol
IPGP
Transactions as of
15 Jan 2026
Net transactions value
-$636,987
Form type
4
Filing time
16 Jan 2026, 16:12:06 UTC
Previous filing
14 Jan 2026
Next filing
18 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Valentin Gapontsev Trust I 10%+ Owner 3 EXECUTIVE PARK DRIVE, SUITE 302, BEDFORD /s/ Adam N. King, Attorney-in-Fact for Valentin Gapontsev Trust I 16 Jan 2026 0001508155

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction IPGP Common Stock Sale $45,326 -571 -0.01% $79.38 6,800,480 15 Jan 2026 Direct F1, F2
transaction IPGP Common Stock Sale $591,661 -7,381 -0.11% $80.16 6,793,099 15 Jan 2026 Direct F1, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

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).

Explanation of Responses:

Id Content
F1 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.
F2 The reported transaction involves sale transactions ranging from $78.66 to $79.63 per share. The weighted average price per share was $79.38. 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 $79.68 to $80.50 per share. The weighted average price per share was $80.16. 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.