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

Nov 9, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MESA LABORATORIES INC /CO (MLAB)
CIK: 0000724004
Period of Report: 2015-11-05

Reporting Person: Sullivan John James (President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-11-05	Common Stock	M	1900	$89.7	Acquired	52993	Direct
2015-11-05	Common Stock	M	3800	$51.85	Acquired	56793	Direct
2015-11-05	Common Stock	M	2000	$50.5	Acquired	58793	Direct
2015-11-06	Common Stock	M	5000	$18.98	Acquired	63793	Direct
2015-11-06	Common Stock	S	2400	$112.99	Disposed	61393	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-11-05	Non Qualified Stock Option	$89.7	X	1900	Disposed	2022-04-01	Common Stock (1900)	Direct
2015-11-05	Non Qualified Stock Option	$51.85	X	3800	Disposed	2023-04-01	Common Stock (3800)	Direct
2015-11-05	Non Qualified Stock Option	$50.5	X	2000	Disposed	2022-04-02	Common Stock (2000)	Direct
2015-11-06	Non Qualified Stock Option	$18.98	X	5000	Disposed	2017-05-11	Common Stock (5000)	Direct

Footnotes

F1: 1/7 exercisable on each of the first 7 anniversary dates

F2: 1/4 exersisible on each of the first 4 anniversay dates