MESA LABS INC

Ticker: MLAB CUSIP: 59064R109 Class: Common Stock

MASON STREET ADVISORS, LLC's Holding History (CIK: 0001167711)

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

Q4 2020

Shares 1,813 Value ($000) $520 Avg Close $268.73 Range $247.92 - $285.33

Q3 2020

Shares 1,819 Value ($000) $463 Avg Close $231.93 Range $202.54 - $252.24

Q2 2020

Shares 1,519 Value ($000) $329 Avg Close $224.85 Range $197.47 - $262.51

Q1 2020

Shares 1,399 Value ($000) $316 Avg Close $240.43 Range $177.40 - $264.58

Q4 2019

Shares 1,399 Value ($000) $349 Avg Close $228.21 Range $201.87 - $248.54

Q3 2019

Shares 1,360 Value ($000) $323 Avg Close $225.06 Range $200.11 - $261.29

Q2 2019

Shares 1,182 Value ($000) $289 Avg Close $226.56 Range $176.37 - $256.07

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2020	1,813	$520	$268.73	$247.92 - $285.33
Q3 2020	1,819	$463	$231.93	$202.54 - $252.24
Q2 2020	1,519	$329	$224.85	$197.47 - $262.51
Q1 2020	1,399	$316	$240.43	$177.40 - $264.58
Q4 2019	1,399	$349	$228.21	$201.87 - $248.54
Q3 2019	1,360	$323	$225.06	$200.11 - $261.29
Q2 2019	1,182	$289	$226.56	$176.37 - $256.07