MESA LABS INC

Ticker: MLAB CUSIP: 59064R109 Class: Common Stock

PRELUDE CAPITAL MANAGEMENT, LLC's Holding History (CIK: 0001387508)

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

Q1 2019

Shares 34 Value ($000) $8 Avg Close $219.75 Range $195.71 - $235.22

Q4 2014

Shares 286 Value ($000) $22 Avg Close $69.59 Range $54.13 - $80.65

Q2 2014

Shares 400 Value ($000) $34 Avg Close $78.24 Range $70.63 - $86.28

Q1 2014

Shares 400 Value ($000) $36 Avg Close $80.28 Range $67.42 - $90.75

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	34	$8	$219.75	$195.71 - $235.22
Q4 2014	286	$22	$69.59	$54.13 - $80.65
Q2 2014	400	$34	$78.24	$70.63 - $86.28
Q1 2014	400	$36	$80.28	$67.42 - $90.75