Mesa Laboratories (MLAB) CEO RSUs expire as 8,211 units forfeited

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Mesa Laboratories President and CEO Gary M. Owens reported the expiration and forfeiture of 8,211 restricted stock units, each representing one share of common stock. The RSUs were due to vest on June 15, 2028, but were deemed expired on March 31, 2026 and returned to the issuer rather than sold on the market. Following this disposition to the company, Owens holds 16,448 restricted stock units directly.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Owens Gary M

Role President and CEO

Type	Security	Shares	Price	Value
Disposition	Restricted Stock Unit - 10	8,211	$0.00	--

Holdings After Transaction: Restricted Stock Unit - 10 — 16,448 shares (Direct)

Footnotes (1)

Each RSU represents a contingent right to receive one share of the Issuer's common stock Forfeited shares were due to vest on June 15, 2028. Shares were deemed expired on March 31, 2026

Key Figures

RSUs disposed: 8,211 units RSUs remaining: 16,448 units Conversion ratio: 1 share per RSU +3 more

6 metrics

RSUs disposed 8,211 units Restricted stock units forfeited on March 31, 2026

RSUs remaining 16,448 units Restricted stock units held after disposition

Conversion ratio 1 share per RSU Each RSU represents one share of common stock

Scheduled vesting date June 15, 2028 Original vesting date for forfeited RSUs

Expiration date March 31, 2026 Date forfeited RSUs were deemed expired

Transaction price $0.00 per unit Issuer disposition of RSUs to company

Key Terms

Restricted Stock Unit, Disposition to issuer, derivative security, expiration

4 terms

Restricted Stock Unit financial

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

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

Disposition to issuer financial

"transaction_code_description: Disposition to issuer"

derivative security financial

"transaction_type: derivative for the Restricted Stock Unit award"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

expiration financial

"Shares were deemed expired on March 31, 2026"

Form 4 Insider Transactions: What Each Field Means →

04/02/2026 - 04:29 PM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Owens Gary M

(Last)

(First)

(Middle)

12100 W. 6TH AVENUE

(Street)

LAKEWOOD

COLORADO

80228

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
MESA LABORATORIES INC /CO/ [ MLAB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	President and CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/31/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Unit - 10	⁽¹⁾	03/31/2026		D			8,211	06/15/2028⁽²⁾	03/31/2028⁽³⁾	Common Stock	8,211	$0	16,448	D

Explanation of Responses:

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

2. Forfeited shares were due to vest on June 15, 2028.

3. Shares were deemed expired on March 31, 2026

	John Sakys under Power of Attorney by Gary Owens	04/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Mesa Laboratories (MLAB) report for Gary Owens?

Mesa Laboratories President and CEO Gary M. Owens reported a disposition of 8,211 restricted stock units. These awards expired and were returned to the company, rather than being sold on the open market, as part of his equity compensation adjustments.

How many Mesa Laboratories restricted stock units did Gary Owens forfeit?

Gary Owens forfeited 8,211 restricted stock units tied to Mesa Laboratories common stock. Each unit represented the right to receive one share, and the units were deemed expired on March 31, 2026 instead of vesting in the future.

Does the Mesa Laboratories Form 4 show an open-market sale by Gary Owens?

The Form 4 does not show an open-market sale by Gary Owens. It reports a disposition to the issuer, where 8,211 restricted stock units expired and were returned to Mesa Laboratories instead of being sold to third-party investors.

What equity position does Gary Owens retain after this Mesa Laboratories RSU expiration?

After the RSU expiration, Gary Owens holds 16,448 restricted stock units directly. These remaining awards continue to represent potential future shares of Mesa Laboratories common stock, subject to their own vesting and expiration terms under the company’s compensation plans.

When were the forfeited Mesa Laboratories RSUs scheduled to vest and when did they expire?

The forfeited Mesa Laboratories restricted stock units were scheduled to vest on June 15, 2028. However, they were deemed expired on March 31, 2026, leading to the 8,211-unit disposition back to the issuer disclosed in the Form 4 filing.