MESA LABORATORIES INC /CO/ - Director's Dealing 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MESA LABORATORIES INC /CO (MLAB)
CIK: 0000724004
Period of Report: 2013-12-09

Reporting Person: Adriance Glenn E (Chief Sales and Marketing Offi)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-12-09	Common Stock	M	100	$20.75	Acquired	17225	Direct
2013-12-09	Common Stock	M	1525	$25.56	Acquired	18750	Direct
2013-12-09	Common Stock	S	600	$75.57	Disposed	18150	Direct
2013-12-09	Common Stock	M	2200	$29.2	Acquired	20350	Direct
2013-12-09	Common Stock	M	1000	$50.5	Acquired	21350	Direct
2013-12-09	Common Stock	S	4225	$73.41	Disposed	17125	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-12-09	Non-Qualified Stock Option	$20.75	X	100	Disposed	2017-10-01	Common Stock (100)	Direct
2013-12-09	Non-Qualified Stock Option	$25.56	X	275	Disposed	2020-04-01	Common Stock (275)	Direct
2013-12-09	Non-Qualified Stock Option	$25.56	X	275	Disposed	2020-04-01	Common Stock (275)	Direct
2013-12-09	Incentive Stock Option	$25.56	X	975	Disposed	2015-04-01	Common Stock (975)	Direct
2013-12-09	Non-Qualified Stock Option	$29.2	X	1100	Disposed	2021-04-06	Common Stock (1100)	Direct
2013-12-09	Non-Qualified Stock Option	$29.2	X	1100	Disposed	2021-04-06	Common Stock (1100)	Direct
2013-12-09	Non-Qualified Stock Option	$50.5	X	1000	Disposed	2022-04-02	Common Stock (1000)	Direct

F1: 1/8 of 25% grant exercisable on each of the first 4 anniversary dates following 10/1/2007

F2: 25% of grant exercisable on each of the first 4 anniversary dates following 04/1/2010

F3: 25% of grant exercisable on each of the first 4 anniversary dates following 4/6/2011

F4: 25% of grant exercisable on each of the first 4 anniversary dates following 4/2/2012