ALPHA PRO TECH LTD

Ticker: APT CUSIP: 020772109 Class: COM

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

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

Q1 2021

Shares 18,442 Value ($000) $180 Avg Close $13.26 Range $9.13 - $20.54

Q4 2020

Shares 18,442 Value ($000) $206 Avg Close $13.49 Range $10.54 - $17.08

Q3 2020

Shares 18,442 Value ($000) $273 Avg Close $16.95 Range $11.88 - $25.55

Q2 2020

Shares 18,442 Value ($000) $326 Avg Close $13.81 Range $9.05 - $20.60

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	18,442	$180	$13.26	$9.13 - $20.54
Q4 2020	18,442	$206	$13.49	$10.54 - $17.08
Q3 2020	18,442	$273	$16.95	$11.88 - $25.55
Q2 2020	18,442	$326	$13.81	$9.05 - $20.60