RESEARCH FRONTIERS INC

Ticker: REFR CUSIP: 760911107 Class: COM

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q1 2021

Shares 40,005 Value ($000) $114 Avg Close $3.88 Range $2.65 - $5.66

Q4 2020

Shares 40,005 Value ($000) $112 Avg Close $2.82 Range $2.50 - $3.57

Q3 2020

Shares 40,005 Value ($000) $108 Avg Close $2.90 Range $2.01 - $4.11

Q2 2020

Shares 40,005 Value ($000) $162 Avg Close $3.71 Range $1.66 - $5.70

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	40,005	$114	$3.88	$2.65 - $5.66
Q4 2020	40,005	$112	$2.82	$2.50 - $3.57
Q3 2020	40,005	$108	$2.90	$2.01 - $4.11
Q2 2020	40,005	$162	$3.71	$1.66 - $5.70