MESA LABS INC

Ticker: MLAB CUSIP: 59064R109 Class: Common Stock

O'SHAUGHNESSY ASSET MANAGEMENT, LLC's Holding History (CIK: 0001423442)

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

Q1 2020

Shares 1,344 Value ($000) $305 Avg Close $240.43 Range $177.40 - $264.58

Q4 2019

Shares 2,098 Value ($000) $522 Avg Close $228.21 Range $201.87 - $248.54

Q3 2019

Shares 2,087 Value ($000) $496 Avg Close $225.06 Range $200.11 - $261.29

Q2 2019

Shares 2,089 Value ($000) $509 Avg Close $226.56 Range $176.37 - $256.07

Q1 2019

Shares 178 Value ($000) $41 Avg Close $219.75 Range $195.71 - $235.22

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2020	1,344	$305	$240.43	$177.40 - $264.58
Q4 2019	2,098	$522	$228.21	$201.87 - $248.54
Q3 2019	2,087	$496	$225.06	$200.11 - $261.29
Q2 2019	2,089	$509	$226.56	$176.37 - $256.07
Q1 2019	178	$41	$219.75	$195.71 - $235.22