MESA LABS INC

Ticker: MLAB CUSIP: 59064R109 Class: Common Stock

Pembroke Management, LTD's Holding History (CIK: 0001063497)

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

Q1 2018

Shares 50,689 Value ($000) $7,524 Avg Close $132.07 Range $118.48 - $150.10

Q4 2017

Shares 53,700 Value ($000) $6,674 Avg Close $135.32 Range $118.50 - $157.82

Q3 2017

Shares 56,700 Value ($000) $8,466 Avg Close $136.33 Range $123.49 - $150.04

Q2 2017

Shares 57,800 Value ($000) $8,283 Avg Close $137.24 Range $116.47 - $164.05

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	50,689	$7,524	$132.07	$118.48 - $150.10
Q4 2017	53,700	$6,674	$135.32	$118.50 - $157.82
Q3 2017	56,700	$8,466	$136.33	$123.49 - $150.04
Q2 2017	57,800	$8,283	$137.24	$116.47 - $164.05