MESA LABS INC

Ticker: MLAB CUSIP: 59064R109 Class: Common Stock

SIT INVESTMENT ASSOCIATES INC's Holding History (CIK: 0000769317)

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

Q1 2019

Shares 1,600 Value ($000) $369 Avg Close $219.75 Range $195.71 - $235.22

Q4 2018

Shares 1,600 Value ($000) $333 Avg Close $189.46 Range $162.53 - $218.23

Q3 2018

Shares 1,350 Value ($000) $251 Avg Close $195.39 Range $165.11 - $218.31

Q2 2018

Shares 4,650 Value ($000) $982 Avg Close $169.69 Range $134.32 - $207.68

Q1 2018

Shares 4,650 Value ($000) $690 Avg Close $132.07 Range $118.48 - $150.10

Q4 2017

Shares 4,650 Value ($000) $578 Avg Close $135.32 Range $118.50 - $157.82

Q3 2017

Shares 2,100 Value ($000) $314 Avg Close $136.33 Range $123.49 - $150.04

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	1,600	$369	$219.75	$195.71 - $235.22
Q4 2018	1,600	$333	$189.46	$162.53 - $218.23
Q3 2018	1,350	$251	$195.39	$165.11 - $218.31
Q2 2018	4,650	$982	$169.69	$134.32 - $207.68
Q1 2018	4,650	$690	$132.07	$118.48 - $150.10
Q4 2017	4,650	$578	$135.32	$118.50 - $157.82
Q3 2017	2,100	$314	$136.33	$123.49 - $150.04