MESA LABS INC

Ticker: MLAB CUSIP: 59064R109 Class: Common Stock

Aperio Group, LLC's Holding History (CIK: 0001364615)

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

Q4 2020

Shares 920 Value ($000) $264 Avg Close $268.73 Range $247.92 - $285.33

Q2 2019

Shares 109 Value ($000) $27 Avg Close $226.56 Range $176.37 - $256.07

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2020	920	$264	$268.73	$247.92 - $285.33
Q2 2019	109	$27	$226.56	$176.37 - $256.07