John Sakys - 12 Aug 2021 Form 4 Insider Report for MESA LABORATORIES INC /CO/ (MLAB)

Role: CFO
Signature: John Sakys
Issuer symbol: MLAB
Transactions as of: 12 Aug 2021
Net transactions value: -$185,460
Form type: 4
Filing time: 13 Aug 2021, 13:49:43 UTC
Previous filing: 13 Jul 2021
Next filing: 01 Sep 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MLAB	Common Stock	Options Exercise	$89,700	+1,000	+13%	$89.70	8,514	12 Aug 2021	Direct
transaction	MLAB	Common Stock	Sale	$275,160	-1,000	-12%	$275.16	7,514	12 Aug 2021	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	MLAB	Non Qualified Stock Option	Exercise of in-the-money or at-the-money derivative security	$0	-1,000	-3.3%	$0.000000	29,296	12 Aug 2021	Common Stock	1,000	$89.70	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	1/7 exercisable on each anniversary date of the 04/01/2014 grant date
F2	Sale reported on Form 4 was effected pursuant to a Rule 10B5-1 trading plan, adopted by the reporting person on March 1, 2021