GLAUKOS CORP

Ticker: GKOS CUSIP: 377322102 Class: EQTY

TOCQUEVILLE ASSET MANAGEMENT L.P.'s Holding History (CIK: 0000883961)

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

Q2 2019

Shares 4,000 Value ($000) $302 Avg Close $71.75 Range $63.00 - $80.32

Q1 2019

Shares 4,000 Value ($000) $313 Avg Close $66.77 Range $50.60 - $83.14

Q1 2017

Shares 9,500 Value ($000) $487 Avg Close $43.59 Range $33.18 - $52.49

Q3 2016

Shares 9,000 Value ($000) $340 Avg Close $33.09 Range $28.26 - $39.82

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2019	4,000	$302	$71.75	$63.00 - $80.32
Q1 2019	4,000	$313	$66.77	$50.60 - $83.14
Q1 2017	9,500	$487	$43.59	$33.18 - $52.49
Q3 2016	9,000	$340	$33.09	$28.26 - $39.82