(MLAB)

Reporting relationship: CFO
Issuer ticker: MLAB
Reported as of: 21 Jun 2025
Net transaction value: +$55,767
SEC form: 4
Accepted by SEC: 25 Jun 2025, 09:14:30 UTC
Prior SEC filing: 20 Jun 2025
Next SEC filing: 16 Jun 2026
Source filing: View source filing
Reporting owner signature: John Sakys

Key filing fact

John Sakys filed Form 4 for MESA LABORATORIES INC /CO/ (MLAB) on 25 Jun 2025.

Key facts

This page summarizes John Sakys's Form 4 filing for MESA LABORATORIES INC /CO/ (MLAB).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 25 Jun 2025, 09:14.

Change

Previous filing in this sequence was filed on 20 Jun 2025.
Current net transaction value: +$55,767.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001197710 Primary reporting owner

Sakys John

Relationship: CFO
Address: MESA LABORATORIES, INC., 12100 W. 6TH AVENUE, LAKEWOOD
Signature: John Sakys
Signature date: 25 Jun 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MLAB transaction

Common Stock

Options Exercise

Transaction value: $99,270
Shares: +1,036
Change %: +7.2%
Price: $95.82
Shares after: 15,498
Date: 21 Jun 2025
Ownership: Direct

MLAB transaction

Common Stock

Tax liability

Transaction value: $43,502
Shares: -454
Change %: -2.9%
Price: $95.82
Shares after: 15,044
Date: 21 Jun 2025
Ownership: Direct

MLAB holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 100
Date: 21 Jun 2025
Ownership: Custodian
Footnotes: F4

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

MLAB transaction Derivative

Restricted Stock Units - 6

Options Exercise

Transaction value: $0
Shares: -1,036
Change %: -50%
Price: $0.000000
Shares after: 1,036
Date: 21 Jun 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,036
Exercise price
Footnotes: F1, F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Each RSU represents a contingent right to receive one share of the Issuer's common stock

Footnote F2

RSUs that vest 1/3 on June 21, 2024 and each of the next two anniversary dates

Footnote F3

Not Applicable

Footnote F4

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