Director buys Mesa Laboratories (MLAB) stock in open-market trade

Rhea-AI Filing Summary

Mesa Laboratories director R. Tony Tripeny bought shares of the company in the open market. He purchased 1,315 shares of Mesa Laboratories common stock at a price of $76.00 per share. After this transaction, his direct ownership increased to 5,398 common shares.

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

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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)

ONE RIVERFRONT PLAZA

(Street)

CORNING NY 14831

(City) (State) (Zip)

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)

3. Date of Earliest Transaction (Month/Day/Year)
03/10/2026

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

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

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

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/10/2026		P		1,315	A	$76	5,398	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	John Sakys under Power of Attorney by Tony Tripeny	03/10/2026
	** 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.

FAQ

What insider transaction did Mesa Laboratories (MLAB) report?

Mesa Laboratories reported that director R. Tony Tripeny bought 1,315 shares of common stock. The purchase was an open-market transaction at $76.00 per share, increasing his direct holdings to 5,398 shares following the trade.

Who is the insider involved in the latest Mesa Laboratories (MLAB) Form 4?

The insider is R. Tony Tripeny, a director of Mesa Laboratories. He reported an open-market purchase of 1,315 common shares at $76.00 each, bringing his post-transaction direct ownership to 5,398 shares of Mesa Laboratories stock.

How many Mesa Laboratories (MLAB) shares did the director buy and at what price?

Director R. Tony Tripeny bought 1,315 Mesa Laboratories common shares at $76.00 per share. This open-market purchase increased his directly held position to 5,398 shares after the transaction was completed.

Is the Mesa Laboratories (MLAB) insider transaction a purchase or a sale?

The Mesa Laboratories insider transaction is a purchase. Director R. Tony Tripeny executed an open-market buy of 1,315 common shares at $76.00 per share, raising his direct holdings to a total of 5,398 shares.

What is R. Tony Tripeny’s Mesa Laboratories (MLAB) ownership after the Form 4 transaction?

After the reported transaction, director R. Tony Tripeny directly owns 5,398 Mesa Laboratories common shares. This reflects an increase from buying 1,315 shares in an open-market purchase at a price of $76.00 per share.