MESA LABORATORIES INC /CO/ — Director's Dealing 2021

Dec 6, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MESA LABORATORIES INC /CO/ (MLAB)
CIK: 0000724004
Period of Report: 2021-12-02

Reporting Person: GUILLEMIN EVAN (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-12-02	Common Stock	M	1200	$89.7	Acquired	30958	Direct
2021-12-02	Common Stock	M	120	$58.51	Acquired	31078	Direct
2021-12-02	Common Stock	M	1000	$97.78	Acquired	32078	Direct
2021-12-02	Common Stock	S	2320	$310.61	Disposed	29758	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-12-02	Non Qualified Stock Option	$89.7	X	1200	Disposed	2022-04-01	Common Stock (1200)	Direct
2021-12-02	Non Qualified Stock Option	$58.51	X	120	Disposed	2022-10-02	Common Stock (120)	Direct
2021-12-02	Non Qualified Stock Option	$97.78	X	1000	Disposed	2022-04-01	Common Stock (1000)	Direct

Footnotes

F1: 1/7 exercisable on each anniversary date of the 04-01-2014 grant date

F2: 1/7 exercisable on each anniversary date of the 10-02-2014 grant date

F3: 1/5 exercisable on each anniversary date of the 04-01-2016 grant adte