MESA LABS INC

Ticker: MLAB CUSIP: 59064R109 Class: Common Stock

MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s Holding History (CIK: 0000912938)

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

Q2 2019

Shares 54,187 Value ($000) $13,240 Avg Close $226.56 Range $176.37 - $256.07

Q1 2019

Shares 73,514 Value ($000) $16,945 Avg Close $219.75 Range $195.71 - $235.22

Q4 2018

Shares 80,814 Value ($000) $16,841 Avg Close $189.46 Range $162.53 - $218.23

Q3 2018

Shares 58,509 Value ($000) $10,860 Avg Close $195.39 Range $165.11 - $218.31

Q2 2018

Shares 57,154 Value ($000) $12,064 Avg Close $169.69 Range $134.32 - $207.68

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2019	54,187	$13,240	$226.56	$176.37 - $256.07
Q1 2019	73,514	$16,945	$219.75	$195.71 - $235.22
Q4 2018	80,814	$16,841	$189.46	$162.53 - $218.23
Q3 2018	58,509	$10,860	$195.39	$165.11 - $218.31
Q2 2018	57,154	$12,064	$169.69	$134.32 - $207.68