Mesa Laboratories director granted 1,774 RSUs

Q: What insider transaction did MLAB disclose for R. Tony Tripeny?

MLAB disclosed that director R. Tony Tripeny received a grant of 1,774 Restricted Stock Units (RSUs) on September 9, 2026. Each RSU represents a contingent right to receive one share of Mesa Laboratories common stock, vesting on September 9, 2027.

Q: When do the newly granted MLAB RSUs to the director vest?

The 1,774 RSUs granted to the Mesa Laboratories (MLAB) director vest on September 9, 2027. Upon vesting, each RSU entitles the holder to receive one share of Mesa Laboratories common stock.

Q: Was the MLAB director’s RSU grant made under a Rule 10b5-1 trading plan?

No. The filing indicates that no Rule 10b5-1 trading plan applies to this RSU grant. It is reported simply as a grant or award acquisition of 1,774 Restricted Stock Units to the director.

A Mesa Laboratories director received 1,774 time-based RSUs that vest in 2027, increasing his equity-linked holdings.

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

MESA LABORATORIES INC (symbol: MLAB) is the issuer of record for a Form 4 filing submitted to the SEC. Tripeny R Tony reported acquisition or exercise transactions in this Form 4 filing.

MESA LABORATORIES INC (MLAB) reported that director R. Tony Tripeny received a grant of 1,774 Restricted Stock Units (RSUs) on September 9, 2026. Each RSU represents a contingent right to receive one share of Mesa Laboratories common stock and vests on September 9, 2027. Following this award, the reporting person holds 1,774 RSUs directly. No transactions were made under a Rule 10b5-1 trading plan.

Insider Trade Summary

Grant/Award: 1,774 shares

Grant/Award 1 txn

Insider Tripeny R Tony

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units - 5 ^{F1, F3, F2}	1,774	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units - 5 — 1,774 contracts (Direct)

Footnotes (3)

F1. Each RSU represents a contingent right to receive one share of the Issuer's common stock
F2. Not Applicable
F3. RSUs that vest September 9, 2027

Key Figures

RSUs granted: 1,774 units Underlying common shares: 1,774 shares Total RSUs after grant: 1,774 units +1 more

4 metrics

RSUs granted 1,774 units Restricted Stock Units granted to director on September 9, 2026

Underlying common shares 1,774 shares Each RSU represents a contingent right to receive one share of common stock

Total RSUs after grant 1,774 units Direct holdings of the director following the reported transaction

Vesting date September 9, 2027 Date on which the 1,774 RSUs vest

Key Terms

Restricted Stock Units, contingent right, vest

3 terms

Restricted Stock Units financial

"Restricted Stock Units - 5"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

contingent right financial

"Each RSU represents a contingent right to receive one share"

vest financial

"RSUs that vest September 9, 2027"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

FAQ

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

What insider transaction did MLAB disclose for R. Tony Tripeny?

MLAB disclosed that director R. Tony Tripeny received a grant of 1,774 Restricted Stock Units (RSUs) on September 9, 2026. Each RSU represents a contingent right to receive one share of Mesa Laboratories common stock, vesting on September 9, 2027.

How many RSUs did the Mesa Laboratories (MLAB) director hold after the grant?

After the grant, the Mesa Laboratories (MLAB) director held 1,774 Restricted Stock Units directly. These RSUs each represent a contingent right to receive one share of common stock, subject to vesting on September 9, 2027.

When do the newly granted MLAB RSUs to the director vest?

The 1,774 RSUs granted to the Mesa Laboratories (MLAB) director vest on September 9, 2027. Upon vesting, each RSU entitles the holder to receive one share of Mesa Laboratories common stock.

What does each RSU granted by Mesa Laboratories (MLAB) represent?

Each RSU granted by Mesa Laboratories (MLAB) to the director represents a contingent right to receive one share of the company’s common stock. The right becomes deliverable only when the RSUs vest, which for this grant is on September 9, 2027.

Was the MLAB director’s RSU grant made under a Rule 10b5-1 trading plan?

No. The filing indicates that no Rule 10b5-1 trading plan applies to this RSU grant. It is reported simply as a grant or award acquisition of 1,774 Restricted Stock Units to the director.

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

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Available on EDGAR 09/11/2026 - 01:34 PM Accepted by SEC EDGAR 09/11/2026 - 01:34 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^*

Tripeny R Tony

(Last)

(First)

(Middle)

12100 W 6TH AVE

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/09/2026

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 Units - 5	⁽¹⁾	09/09/2026		A		1,774		⁽³⁾	⁽²⁾	Common Stock	1,774	$0	1,774	D

Explanation of Responses:

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

2. Not Applicable

3. RSUs that vest September 9, 2027

	John Sakys under Power of Attorney by Tony Tripeny	09/11/2026
	** 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

Mesa Laboratories director granted 1,774 RSUs

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