Management Change/Compensation (Form 8-K)

On June 11, 2026, the board of directors (the "Board") of Mesa Laboratories, Inc. ("Mesa" or the "Company") approved the appointment of Lyndsey Crennen as the Chief Accounting Officer of the Company, effective as of her entry into the Employment Agreement described below.

Ms. Crennen, age 41, has over 20 years of experience in accounting and related roles. Ms. Crennen joined Mesa in 2018 as Assistant Controller and has held progressive accounting roles at the Company, including serving as Corporate Controller since 2022. Prior to joining Mesa, Ms. Crennen worked at Chipotle Mexican Grill, Inc., where she led the internal audit function from 2012 to 2014 and subsequently oversaw technical accounting and financial reporting through 2018. Ms. Crennen began her career as an auditor at PricewaterhouseCoopers, LLP in Denver. Ms. Crennen holds a B.S. degree in accounting and finance from the University of Colorado and is a Certified Public Accountant.

There are no family relationships between Ms. Crennen and any director or executive officer of the Company, and there are no arrangements or understandings between Ms. Crennen and any other persons pursuant to which she was appointed as Chief Accounting Officer of the Company. In addition, there are no related party transactions between Ms. Crennen and the Company that require disclosure pursuant to Item 404(a) of Regulation S-K.

In connection with her appointment, Ms. Crennen and the Company expect to enter into an Employment Agreement on or about June 26, 2026 (the "Employment Agreement"), pursuant to which Ms. Crennen will receive an annual base salary of $325,000, which may be increased from time to time by the Compensation Committee of the Board. She will be eligible to participate in the Company's short-term incentive bonus plan, with the opportunity to receive an annual cash bonus equal to 40% of her annual base salary, pursuant to the terms and conditions of such plan and subject to the achievement of performance targets set by the Compensation Committee of the Board. Ms. Crennen will also be eligible to participate in Mesa's long-term incentive plan with an annual target award value of $300,000, subject to the terms and conditions of the plan. The Employment Agreement contains customary severance and other terms.

The foregoing description of the Employment Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Employment Agreement, a copy of which is filed as Exhibit 10.1 to this Current Report on Form 8-K and incorporated herein by reference.