IPG PHOTONICS CORP

Ticker: IPGP CUSIP: 44980X109 Class: Common Stock

VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P.'s Holding History (CIK: 0001021642)

Note: Option positions (PUT/CALL) are excluded.

Q1 2018

Shares 127,555 Value ($000) $29,769 Avg Close $246.76 Range $213.58 - $264.11

Q4 2017

Shares 128,760 Value ($000) $27,571 Avg Close $212.25 Range $185.00 - $248.23

Q3 2017

Shares 125,695 Value ($000) $23,261 Avg Close $166.10 Range $144.71 - $187.98

Q2 2017

Shares 121,470 Value ($000) $17,625 Avg Close $134.25 Range $116.82 - $149.29

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	127,555	$29,769	$246.76	$213.58 - $264.11
Q4 2017	128,760	$27,571	$212.25	$185.00 - $248.23
Q3 2017	125,695	$23,261	$166.10	$144.71 - $187.98
Q2 2017	121,470	$17,625	$134.25	$116.82 - $149.29