Brian David Archbold - 10 Jun 2025 Form 4 Insider Report for MESA LABORATORIES INC /CO/ (MLAB)

Signature
John Sakys under Power of Attorney by Brian Archbold
Issuer symbol
MLAB
Transactions as of
10 Jun 2025
Net transactions value
$0
Form type
4
Filing time
11 Jun 2025, 10:23:26 UTC
Previous filing
16 Sep 2024
Next filing
18 Jun 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Archbold Brian David SVP Operations 12100 W. 6TH AVENUE, LAKEWOOD John Sakys under Power of Attorney by Brian Archbold 11 Jun 2025 0001776947

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 Expiration of short derivative position $0 -2,129 -14% $0.000000 12,567 10 Jun 2025 Common Stock 2,129 $203.54 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 NSOs that vest 1/4 on each anniversary date of the June 10, 2019 grant date
F2 NSOs that expired unexercised on June 10, 2025