MESA LABORATORIES INC /CO/ — Director's Dealing 2016

Jun 6, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MESA LABORATORIES INC /CO (MLAB)
CIK: 0000724004
Period of Report: 2016-06-02

Reporting Person: CAMPBELL H STUART (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-06-02	Common Stock	M	250	$50.5	Acquired	70321	Direct
2016-06-02	Common Stock	M	250	$51.85	Acquired	70571	Direct
2016-06-02	Common Stock	M	171	$89.7	Acquired	70742	Direct
2016-06-02	Common Stock	M	188	$70.56	Acquired	70930	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-06-02	Non Qualified Stock Option	$50.5	X	250	Disposed	2022-04-02	Common Stock (250)	Direct
2016-06-02	Non Qualified Stock Option	$51.85	X	250	Disposed	2023-04-01	Common Stock (250)	Direct
2016-06-02	Non Qualified Stock Option	$89.7	X	171	Disposed	2022-04-01	Common Stock (171)	Direct
2016-06-02	Non Qualified Stock Option	$70.56	X	188	Disposed	2023-04-01	Common Stock (188)	Direct

Footnotes

F1: 1/4 exercisable on each of the first 4 anniversary dates

F2: 1/7 exercisable on each of the first 7 anniversary dates