GLAUKOS CORP

Ticker: GKOS CUSIP: 377322102 Class: EQTY

MASON STREET ADVISORS, LLC's Holding History (CIK: 0001167711)

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

Q4 2020

Shares 16,766 Value ($000) $1,262 Avg Close $63.20 Range $48.68 - $76.20

Q3 2020

Shares 16,761 Value ($000) $830 Avg Close $43.94 Range $35.65 - $52.03

Q2 2020

Shares 14,945 Value ($000) $574 Avg Close $37.23 Range $27.58 - $47.82

Q1 2020

Shares 13,463 Value ($000) $415 Avg Close $51.30 Range $23.31 - $70.96

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2020	16,766	$1,262	$63.20	$48.68 - $76.20
Q3 2020	16,761	$830	$43.94	$35.65 - $52.03
Q2 2020	14,945	$574	$37.23	$27.58 - $47.82
Q1 2020	13,463	$415	$51.30	$23.31 - $70.96