GLAUKOS CORP

Ticker: GKOS CUSIP: 377322102 Class: EQTY

Bay Colony Advisory Group, Inc d/b/a Bay Colony Advisors's Holding History (CIK: 0001748861)

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

Q2 2021

Shares 3,316 Value ($000) $281 Avg Close $82.12 Range $71.47 - $98.28

Q1 2021

Shares 2,800 Value ($000) $235 Avg Close $87.94 Range $69.89 - $99.00

Q4 2020

Shares 3,640 Value ($000) $274 Avg Close $63.20 Range $48.68 - $76.20

Q3 2020

Shares 4,699 Value ($000) $233 Avg Close $43.94 Range $35.65 - $52.03

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2021	3,316	$281	$82.12	$71.47 - $98.28
Q1 2021	2,800	$235	$87.94	$69.89 - $99.00
Q4 2020	3,640	$274	$63.20	$48.68 - $76.20
Q3 2020	4,699	$233	$43.94	$35.65 - $52.03