MESA LABORATORIES INC /CO/ - Director's Dealing 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MESA LABORATORIES INC /CO (MLAB)
CIK: 0000724004
Period of Report: 2015-04-27

Reporting Person: SCHMIEDER LUKE R (Former Director)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-04-27	Common Stock	M	2000	$25.56	Acquired	175749	Direct
2015-04-27	Common Stock	F	605	$84.46	Disposed	175144	Direct
2015-04-27	Common Stock	M	1000	$20.2	Acquired	176144	Direct
2015-04-27	Common Stock	F	346	$84.46	Disposed	175798	Direct
2015-04-27	Common Stock	M	750	$50.5	Acquired	176548	Direct
2015-04-27	Common Stock	F	448	$84.46	Disposed	176100	Direct
2015-04-27	Common Stock	M	500	$51.85	Acquired	176600	Direct
2015-04-27	Common Stock	F	307	$84.46	Disposed	176293	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-04-27	Non Qualified Stock Option	$25.56	X	2000	Disposed	2020-04-01	Common Stock (2000)	Direct
2015-04-27	Non Qualified Stock Option	$29.2	X	1000	Disposed	2021-04-06	Common Stock (1000)	Direct
2015-04-27	Non Qualified Stock Option	$50.5	X	750	Disposed	2022-04-02	Common Stock (750)	Direct
2015-04-27	Non Qualified Stock Option	$51.85	X	500	Disposed	2023-04-01	Common Stock (500)	Direct

F1: 25% exercisable on each anniversary date following the 04/01/2010 grant date.

F2: 25% exercisable on each anniversary date following the 04/06/2011 grant date.

F3: 25% exercisable on each anniversary date following the 04/02/2012 grant date.

F4: 25% exercisable on each anniversary date following the 04/01/2013 grant date.