=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-08-04
10b5-1 Pre-arranged Plan: Yes
--- Issuer ---
Name: IPG PHOTONICS CORP (IPGP)
CIK: 0001111928
--- Reporting Owner ---
Name: IP FIBRE DEVICES LTD
CIK: 0001130423
Role: 10%+ Owner
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-08-04 | Code: S (Open market sale)
Shares: -12,202 | Price: $95.18
Total Value: $1,161,386.36
Shares Owned After: 6,424,100 | Ownership: D (Direct)
Footnotes:
[F2] The reported transaction involves sale transactions ranging from $95.00 to $95.51 per share. The weighted average price per share was $95.18. 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.
[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.
[Transaction #2]
Security: Common Stock
Date: 2026-08-05 | Code: S (Open market sale)
Shares: -11,912 | Price: $95.31
Total Value: $1,135,332.72
Shares Owned After: 6,412,188 | Ownership: D (Direct)
Footnotes:
[F3] The reported transaction involves sale transactions ranging from $95.03 to $95.99 per share. The weighted average price per share was $95.31. 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.
[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.
[Transaction #3]
Security: Common Stock
Date: 2026-08-05 | Code: S (Open market sale)
Shares: -1,325 | Price: $96.76
Total Value: $128,207.00
Shares Owned After: 6,410,863 | Ownership: D (Direct)
Footnotes:
[F4] The reported transaction involves sale transactions ranging from $96.32 to $97.13 per share. The weighted average price per share was $96.76. 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.
[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.
[Transaction #4]
Security: Common Stock
Date: 2026-08-05 | Code: S (Open market sale)
Shares: -4,324 | Price: $97.81
Total Value: $422,930.44
Shares Owned After: 6,406,539 | Ownership: D (Direct)
Footnotes:
[F5] The reported transaction involves sale transactions ranging from $97.39 to $98.19 per share. The weighted average price per share was $97.81. 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.
[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.
[Transaction #5]
Security: Common Stock
Date: 2026-08-05 | Code: S (Open market sale)
Shares: -550 | Price: $98.71
Total Value: $54,290.50
Shares Owned After: 6,405,989 | Ownership: D (Direct)
Footnotes:
[F6] The reported transaction involves sale transactions ranging from $98.64 to $98.81 per share. The weighted average price per share was $98.71. 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.
[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.
--- Footnotes (Complete Index) ---
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 $95.00 to $95.51 per share. The weighted average price per share was $95.18. 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 $95.03 to $95.99 per share. The weighted average price per share was $95.31. 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 $96.32 to $97.13 per share. The weighted average price per share was $96.76. 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 $97.39 to $98.19 per share. The weighted average price per share was $97.81. 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.
F6: The reported transaction involves sale transactions ranging from $98.64 to $98.81 per share. The weighted average price per share was $98.71. 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.
--- Signature ---
/s/ /s/ Adam N. King, Attorney-in-Fact (2026-08-05)
