Mesa Laboratories updates corporate code of ethics

Mesa Laboratories, Inc. reported that its Board of Directors approved an amended and restated Code of Ethics and Business Conduct on July 30, 2026, effective immediately.

Rhea-AI Filing Summary

Mesa Laboratories, Inc. reported that its Board of Directors approved an amended and restated Code of Ethics and Business Conduct on July 30, 2026, effective immediately. The updated Code replaces the prior version.

The amendments are described as updating and modernizing the Code, including specific revisions related to external communications and social media, along with other clarifying, administrative, compliance and procedural updates. The complete Code of Ethics and Business Conduct is provided as Exhibit 14.1 to the report.

8-K Event Classification

2 items: 5.05, 9.01

2 items

Item 5.05 Amendments to the Registrant's Code of Ethics, or Waiver of a Provision of the Code of Ethics Governance

The company amended or granted a waiver from its code of ethics for senior financial officers.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, or exhibit attachments filed with this report.

Key Figures

Effective date: July 30, 2026

1 metrics

Effective date July 30, 2026 Date Board approved amended and restated Code of Ethics and Business Conduct

Key Terms

Code of Ethics and Business Conduct, external communications, Inline XBRL

3 terms

Code of Ethics and Business Conduct regulatory

"approved an amended and restated Code of Ethics and Business Conduct"

A code of ethics and business conduct is a company’s written rulebook that explains the expected behavior of its leaders and employees, covering honesty, conflicts of interest, legal compliance and fair treatment. For investors it matters because a strong, enforced code helps reduce the risk of fraud, legal fines and reputational damage—much like house rules that keep a shared home orderly and predictable, protecting the value of the investment.

external communications regulatory

"including revisions relating to external communications and social media"

Inline XBRL technical

"Cover Page Interactive Data File (embedded within the Inline XBRL document)"

Inline XBRL is a file format for financial filings that embeds machine-readable data tags directly inside the human-readable report, so the same document can be read by people and parsed by software. For investors it makes extracting, comparing and verifying financial numbers faster and more reliable—like a grocery list where each item also has a barcode—reducing manual errors and speeding up analysis.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What change did Mesa Laboratories (MLAB) make on July 30, 2026?

Mesa Laboratories’ Board approved an amended and restated Code of Ethics and Business Conduct effective July 30, 2026. The company describes the revised Code as updating and modernizing its prior version with several clarifying, administrative, compliance and procedural changes.

How did Mesa Laboratories (MLAB) describe the purpose of the new Code of Ethics?

The company stated that the amended Code of Ethics and Business Conduct updates and modernizes its existing Code. It highlights revisions related to external communications, social media, and additional clarifying, administrative, compliance and procedural updates across the document.

Does the Mesa Laboratories (MLAB) Code of Ethics amendment address social media?

Yes. Mesa Laboratories noted that the amended Code includes specific revisions relating to external communications and social media. These changes sit alongside other clarifying, administrative, compliance and procedural updates within the updated Code of Ethics and Business Conduct.

When does the amended Mesa Laboratories (MLAB) Code of Ethics take effect?

The amended and restated Code of Ethics and Business Conduct became effective immediately upon Board approval on July 30, 2026. That date is both the approval and effective date referenced for the updated ethics and business conduct standards.

Where can investors find the full Mesa Laboratories (MLAB) Code of Ethics text?

Mesa Laboratories filed the complete Code of Ethics and Business Conduct as Exhibit 14.1 to its current report. The exhibit contains the full updated text reflecting revisions on external communications, social media and other compliance-related changes.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 07/30/2026 - 05:19 PM Accepted by SEC EDGAR 07/30/2026 - 05:18 PM Learn about SEC filing dates

false 0000724004 0000724004 2026-07-30 2026-07-30

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549   

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): July 30, 2026

MESA LABORATORIES, INC.

(Exact name of registrant as specified in its charter)

Colorado
(State or other jurisdiction of
incorporation) 0-11740 (Commission File Number) 84-0872291
(I.R.S. Employer
Identification No.)

12100 WEST SIXTH AVENUE, LAKEWOOD, Colorado
(Address of principal executive offices) 80228
(Zip Code)

Registrant’s telephone number, including area code: 303-987-8000

Not Applicable 
(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered under Section 12(b) of the Act:

Title of each class		Trading Symbol		Name of each exchange on which registered
Common Stock, no par value		MLAB		The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

Item 5.05. Amendments to the Registrant's Code of Ethics.

On July 30, 2026, the Board of Directors of Mesa Laboratories, Inc. (the "Company") approved an amended and restated Code of Ethics and Business Conduct (the "Code"), effective immediately. The amended Code updates and modernizes the Company's existing Code of Ethics and Business Conduct, including revisions relating to external communications and social media, as well as other clarifying, administrative, compliance and procedural updates.

The foregoing description is qualified in its entirety by reference to the Code.

The Code is filed as Exhibit 14.1 to this Current Report on Form 8-K and incorporated herein by reference.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.	Description
14.1	Code of Ethics and Business Conduct, effective July 30, 2026
104	Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

DATE: July 30, 2026				Mesa Laboratories, Inc.
				(Registrant)
			BY:	/s/ John Sakys
				John Sakys
				Chief Financial Officer

Filing Exhibits & Attachments

5 documents

Other Documents

• EX-14.1 EXHIBIT 14.1 94.5 KB
• EX-101 XBRL TAXONOMY EXTENSION SCHEMA 3.5 KB
• EX-101 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE 11.2 KB
• EX-101 XBRL TAXONOMY EXTENSION LABEL LINKBASE 15.0 KB
• EX-101 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE 11.3 KB