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

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MESA LABORATORIES INC /CO/ (MLAB)
CIK: 0000724004
Period of Report: 2021-06-04

Reporting Person: KELLY DAVID M (Director)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-06-04	Common Stock	M	172	$89.7	Acquired	2772	Direct
2021-06-04	Common Stock	M	189	$70.56	Acquired	2961	Direct
2021-06-04	Common Stock	M	200	$97.78	Acquired	3161	Direct
2021-06-04	Common Stock	M	200	$122.66	Acquired	3361	Direct
2021-06-04	Common Stock	M	90	$142.4	Acquired	3451	Direct
2021-06-04	Common Stock	S	851	$260.28	Disposed	2600	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-06-04	Non Qualified Stock Option	$89.7	X	172	Disposed	2022-04-01	Common Stock (172)	Direct
2021-06-04	Non Qualified Stock Option	$70.56	X	189	Disposed	2023-04-01	Common Stock (189)	Direct
2021-06-04	Non Qualified Stock Option	$97.78	X	200	Disposed	2022-04-01	Common Stock (200)	Direct
2021-06-04	Non Qualified Stock Option	$122.66	X	200	Disposed	2023-04-03	Common Stock (200)	Direct
2021-06-04	Non Qualified Stock Option	$142.4	X	90	Disposed	2024-04-02	Common Stock (90)	Direct

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 04/01/2015 grant date

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

F4: 1/5 exercisable on each anniversary date of the 04/03/2017 grant date

F5: 1/5 exercisable on each anniversary date of the 04/02/2018 grant date