Valentin Gapontsev Trust I - 15 Dec 2025 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 Dec 2025
Transactions value $
-$5,146,832
Form type
4
Filing time
16 Dec 2025, 16:45:24 UTC
Previous filing
19 Nov 2025
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 Dec 2025 0001508155

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction IPGP Common Stock Sale -$3.06M -39.4K -0.57% $77.63 6.89M 15 Dec 2025 Direct F1, F2
transaction IPGP Common Stock Sale -$1.04M -13.5K -0.2% $76.59 6.87M 16 Dec 2025 Direct F1, F3
transaction IPGP Common Stock Sale -$942K -12.2K -0.18% $77.44 6.86M 16 Dec 2025 Direct F1, F4
transaction IPGP Common Stock Sale -$110K -1.41K -0.02% $78.22 6.86M 16 Dec 2025 Direct F1, F5
* 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 $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.
F3 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.
F4 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.
F5 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.