MESA LABS INC

Ticker: MLAB CUSIP: 59064R109 Class: Common Stock

Municipal Employees' Retirement System of Michigan's Holding History (CIK: 0001588873)

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

Q1 2020

Shares 1,230 Value ($000) $278 Avg Close $240.43 Range $177.40 - $264.58

Q4 2019

Shares 1,230 Value ($000) $307 Avg Close $228.21 Range $201.87 - $248.54

Q3 2019

Shares 1,180 Value ($000) $281 Avg Close $225.06 Range $200.11 - $261.29

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2020	1,230	$278	$240.43	$177.40 - $264.58
Q4 2019	1,230	$307	$228.21	$201.87 - $248.54
Q3 2019	1,180	$281	$225.06	$200.11 - $261.29