MESA LABORATORIES INC /CO/ - Director's Dealing 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MESA LABORATORIES INC /CO (MLAB)
CIK: 0000724004
Period of Report: 2014-04-01

Reporting Person: CAMPBELL H STUART (Director)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-04-07	Common Stock	M	250	$29.2	Acquired	77448	Direct
2014-04-07	Common Stock	M	500	$25.56	Acquired	77948	Direct
2014-04-07	Common Stock	M	500	$50.5	Acquired	78448	Direct
2014-04-07	Common Stock	M	250	$51.85	Acquired	78698	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-04-01	Non-Qualified Stock Option	$89.7	A	1200	Acquired	2022-04-01	Common Stock (1200)	Direct
2014-04-07	Non-Qualified Stock Option	$29.2	X	250	Disposed	2021-04-06	Common Stock (250)	Direct
2014-04-07	Non-Qualified Stock Option	$25.56	X	500	Disposed	2020-04-01	Common Stock (500)	Direct
2014-04-07	Non-Qualified Stock Option	$50.5	X	500	Disposed	2022-04-02	Common Stock (500)	Direct
2014-04-07	Non-Qualified Stock Option	$51.85	X	250	Disposed	2023-04-01	Common Stock (250)	Direct

F1: 1/7 Exercisable on each anniversary date of grant

F2: 25% of Grant Exercisable on each of the first 4 anniversary dates following 04/06/2011

F3: 25% of Grant Exercisable on each of 4 anniversary dates following 04/01/2010

F4: 25% of Grant Exercisable on each of first 4 anniversary dates following April 2, 2012

F5: 25% of Grant Exercisable on each of the first 4 anniversary dates following 04/01/2013