IPG PHOTONICS CORP

Ticker: IPGP CUSIP: 44980X109 Class: Common Stock

DRIEHAUS CAPITAL MANAGEMENT LLC's Holding History (CIK: 0000938206)

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

Q4 2017

Shares 2,776 Value ($000) $594 Avg Close $212.25 Range $185.00 - $248.23

Q3 2017

Shares 9,789 Value ($000) $1,812 Avg Close $166.10 Range $144.71 - $187.98

Q2 2017

Shares 16,641 Value ($000) $2,415 Avg Close $134.25 Range $116.82 - $149.29

Q1 2017

Shares 6,934 Value ($000) $837 Avg Close $113.15 Range $95.04 - $124.27

Q4 2015

Shares 2,756 Value ($000) $246 Avg Close $85.71 Range $70.21 - $95.12

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	2,776	$594	$212.25	$185.00 - $248.23
Q3 2017	9,789	$1,812	$166.10	$144.71 - $187.98
Q2 2017	16,641	$2,415	$134.25	$116.82 - $149.29
Q1 2017	6,934	$837	$113.15	$95.04 - $124.27
Q4 2015	2,756	$246	$85.71	$70.21 - $95.12