Mesa Labs ex-officer plans sale of 20K shares

MESA LABORATORIES INC (MLAB) is the subject of a Rule 144 notice filed for the potential sale of its common stock by former officer Gary M. Owens.

Rhea-AI Filing Summary

MESA LABORATORIES INC (MLAB) is the subject of a Rule 144 notice filed for the potential sale of its common stock by former officer Gary M. Owens. The notice covers up to 20,000 shares of common stock to be sold through Fidelity Brokerage Services LLC, with an aggregate market value of $2,450,059.20 and 5,595,869 shares of common stock outstanding as context. The shares were acquired through restricted stock vesting grants between 2018 and 2025. The form also notes a prior sale by Owens of 3,706 shares on June 16, 2026 for $375,295.50.

Key Figures

Shares to be sold under Rule 144: 20,000 shares Aggregate market value of shares to be sold: $2,450,059.20 Shares of common stock outstanding: 5,595,869 shares +5 more

8 metrics

Shares to be sold under Rule 144 20,000 shares Common stock covered by the notice to be sold through Fidelity Brokerage Services LLC

Aggregate market value of shares to be sold $2,450,059.20 Value of the 20,000 MLAB common shares covered by the Rule 144 notice

Shares of common stock outstanding 5,595,869 shares Outstanding MLAB common shares reported in the filing

Recent sale of shares 3,706 shares MLAB common shares sold on June 16, 2026 by Gary M. Owens

Proceeds from recent sale $375,295.50 Value of 3,706 MLAB shares sold on June 16, 2026

Earliest acquisition date of shares 04/18/2018 First restricted stock vesting date listed for compensation shares

Latest acquisition date of shares 06/18/2025 Most recent restricted stock vesting date listed for compensation shares

Approximate date of proposed sale 08/21/2026 Approximate date of sale for the 20,000 shares under Rule 144

Key Terms

Rule 144, Restricted Stock Vesting, attorney-in-fact

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Vesting financial

"Common | 04/18/2018 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

attorney-in-fact regulatory

"as attorney-in-fact for Gary M. Owens"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

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

What does the Form 144 filed in connection with MLAB disclose?

It discloses that former officer Gary M. Owens has filed a Rule 144 notice for the potential sale of up to 20,000 shares of Mesa Laboratories Inc common stock through Fidelity Brokerage Services LLC.

How many MLAB shares are covered by this Rule 144 notice and what is their value?

The notice covers up to 20,000 shares of MLAB common stock with an aggregate market value of $2,450,059.20 as stated in the filing.

How many MLAB shares are outstanding according to this filing?

The filing reports that MLAB had 5,595,869 shares of common stock outstanding, providing context for the size of the proposed Rule 144 sale.

When were the MLAB shares to be sold under this Form 144 acquired?

The shares were acquired through restricted stock vesting on several dates between April 18, 2018 and June 18, 2025, all from the issuer as compensation.

Were any MLAB shares sold by Gary M. Owens in the past three months?

Yes. The filing reports a sale of 3,706 shares of MLAB common stock on June 16, 2026 for proceeds of $375,295.50.

Who is executing the potential MLAB share sale under this Form 144?

The potential sale is to be executed through Fidelity Brokerage Services LLC, which is named as the broker for the proposed Rule 144 transaction.

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

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Accepted by SEC EDGAR 08/21/2026 - 03:53 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001700671
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	MESA LABORATORIES INC /CO/
SEC File Number	000-11740
Address of Issuer	12100 W 6TH AVE LAKEWOOD COLORADO 80228
Phone	3039878000
Name of Person for Whose Account the Securities are To Be Sold	Owens Gary M
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Former Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	20000	2450059.20	5595869	08/21/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	04/18/2018	Restricted Stock Vesting	Issuer			1000	04/18/2018	Compensation
Common	09/01/2022	Restricted Stock Vesting	Issuer			4025	09/01/2022	Compensation
Common	06/16/2023	Restricted Stock Vesting	Issuer			629	06/16/2023	Compensation
Common	06/15/2024	Restricted Stock Vesting	Issuer			1778	06/15/2024	Compensation
Common	10/25/2024	Restricted Stock Vesting	Issuer			3262	10/25/2024	Compensation
Common	10/28/2024	Restricted Stock Vesting	Issuer			3228	10/28/2024	Compensation
Common	06/15/2025	Restricted Stock Vesting	Issuer			1181	06/15/2025	Compensation
Common	06/18/2025	Restricted Stock Vesting	Issuer			4897	06/18/2025	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Gary M. Owens 12100 West Sixth Avenue Lakewood CO 80228	Common	06/16/2026	3706	375295.50

144: Remarks and Signature

Remarks
Date of Notice	08/21/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Gary M. Owens
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)