MESA LABORATORIES INC /CO/ — Director's Dealing 2010

Jan 7, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MESA LABORATORIES INC /CO (MLAB)
CIK: 0000724004
Period of Report: 2010-01-06

Reporting Person: PETERSON STEVEN W (CFO and Secretary)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-01-06	Mesa Laboratories, Inc. Common Stock	F	1068	$27.44	Disposed	59077	Direct
2010-01-06	Mesa Laboratories, Inc. Common Stock	M	2025	$14.5	Acquired	61102	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-01-06	Incentive Stock Options	$14.5	X	2025	Disposed	2011-04-26	Mesa Laboratories, Inc. Common Stock (2025)	Direct

Footnotes

F1: Options vest 25% on each of the first four anniversary dates.