[Form 4] Mesa Laboratories Inc Insider Trading Activity

Rhea-AI Filing Summary

Mesa Laboratories (NASDAQ:MLAB) reported insider trading activity through a Form 4 filing for SVP Operations Brian David Archbold. The transactions occurred on June 21, 2025, involving restricted stock units (RSUs). Archbold acquired 844 shares at $95.82 per share through RSU conversion and subsequently disposed of 385 shares at the same price, likely for tax withholding purposes. Following these transactions, Archbold holds 2,407 shares directly.

Insights

Securities Compliance Analyst

Standard RSU vesting transaction with typical tax-related share withholding, representing routine executive compensation.

The reported transactions follow a common pattern for executive RSU vesting events. The initial acquisition of 844 shares represents a scheduled RSU conversion, part of a three-year vesting schedule with annual installments. The immediate disposition of 385 shares at the same price point is consistent with standard tax withholding practices. The remaining position of 2,407 shares indicates continued alignment with shareholder interests. The transaction timing aligns with the predetermined vesting schedule, suggesting proper compliance with Rule 10b5-1.

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^*

Archbold Brian David

(Last) (First) (Middle)

12100 W. 6TH AVENUE

(Street)

LAKEWOOD CO 80228

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
06/21/2025

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	06/21/2025		M		844	A	$95.82	2,792	D
Common Stock	06/21/2025		F		385	D	$95.82	2,407	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
Restricted Stock Units - 7	(1)	06/21/2025		M			844	(2)	(3)	Common Stock	844	$0	844	D

Explanation of Responses:

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

2. RSUs that vest 1/3 on June 21 2024 and each of the next two anniversary dates

3. Not Applicable

	John Sakys under Power of Attorney by Brian Archbold	06/25/2025
	** 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

How many shares did Mesa Labs SVP Operations acquire through RSU vesting?

SVP Operations Brian David Archbold acquired 844 shares through RSU vesting at $95.82 per share on June 21, 2025.

What is the vesting schedule for the Mesa Labs RSUs?

The RSUs vest in three equal annual installments, with vesting dates occurring on June 21st of 2024 and the following two years.

How many shares does the Mesa Labs SVP Operations now own?

Following these transactions, Brian David Archbold directly owns 2,407 shares of Mesa Laboratories common stock.

Why did the Mesa Labs executive sell some shares immediately after acquiring them?

The executive disposed of 385 shares at $95.82, likely for tax withholding purposes, which is a common practice for RSU vesting events.