IPG PHOTONICS CORP — Director's Dealing 2018

May 11, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IPG PHOTONICS CORP (IPGP)
CIK: 0001111928
Period of Report: 2018-05-10

Reporting Person: Ness Trevor (SVP, Worldwide Sales & Mrkting)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-05-10	Common Stock	M	4000	$58.65	Acquired	22573	Direct
2018-05-10	Common Stock	M	2000	$60.11	Acquired	24573	Direct
2018-05-10	Common Stock	S	6000	$250.44	Disposed	18573	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-05-10	Employee Stock Options (right to buy)	$58.65	M	4000	Disposed	2022-02-13	Common Stock (4000.0)	Direct
2018-05-10	Employee Stock Option (right to buy)	$60.11	M	2000	Disposed	2023-02-28	Common Stock (2000.0)	Direct

Footnotes

F1: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 2, 2018.

F2: The reported transaction involves purchase transactions from 250.00 to $251.12 per share. The weighted average price per share was $250.44. 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 purchased at each separate price.

F3: Options vest in four equal quarterly installments commencing March 31, 2016.

F4: Options vest in one installment on March 1, 2017.