MESA LABORATORIES INC /CO/ — Director's Dealing 2023

Mar 27, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MESA LABORATORIES INC /CO/ (MLAB)
CIK: 0000724004
Period of Report: 2023-03-22

Reporting Person: Sakys John (CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-03-22	Common Stock	M	2500	$122.66	Acquired	12196	Direct
2023-03-22	Common Stock	S	2500	$171.62	Disposed	9696	Direct
2023-03-24	Common Stock	M	1000	$122.66	Acquired	10696	Direct
2023-03-24	Common Stock	S	1000	$167.01	Disposed	9696	Direct
2023-03-24	Common Stock	M	1128	$51.85	Acquired	10824	Direct
2023-03-24	Common Stock	S	1128	$167.01	Disposed	9696	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-03-22	Non Qualified Stock Option	$122.66	X	2500	Disposed	2023-04-03	Common Stock (2500)	Direct
2023-03-24	Non Qualified Stock Option	$122.66	X	1000	Disposed	2023-04-03	Common Stock (1000)	Direct
2023-03-24	Non Qualified Stock Option	$51.85	X	1128	Disposed	2023-04-01	Common Stock (1128)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	100	Indirect

Footnotes

F1: 1/5 exercisable on each anniversary date of the 04/03/17 grant date

F2: 1/4 exercisable on each anniversary date of the 04/01/2013 grant date

F3: Sale reported on the Form 4 was effected pursuant to a Rule 10B5-1 trading plan adopted by the reporting person on June 14, 2022

F4: Consists of 100 shares held by children of which Mr. Sakys is custodian