Mesa Labs CFO Retains Majority of Vested Shares Following RSU Transaction

Mesa Laboratories (NASDAQ:MLAB) CFO John Sakys reported multiple transactions on June 21, 2025.

Rhea-AI Filing Summary

Mesa Laboratories (NASDAQ:MLAB) CFO John Sakys reported multiple transactions on June 21, 2025. The transactions involved the vesting of 1,036 Restricted Stock Units (RSUs) and subsequent sale of 454 shares for tax withholding purposes at $95.82 per share. Following these transactions, Sakys directly owns 15,044 shares and indirectly holds 100 shares as custodian for his children.

Insights

Financial Analyst

Standard RSU vesting and tax-related share sale indicates normal executive compensation activity with no concerning signals.

The reported transactions represent a routine vesting event of RSUs granted as part of the CFO's compensation package. The immediate sale of 454 shares (approximately 44% of vested shares) appears to be solely for covering tax obligations, a common practice among executives. The retention of the majority of vested shares (56%) demonstrates continued alignment with shareholder interests. The CFO maintains a significant equity position with 15,044 shares held directly, suggesting strong confidence in the company's prospects.

Insider Trade Summary

1,036 shares exercised/converted

Exercise 4 txns

Insider Sakys John

Role CFO

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units - 6	1,036	$0.00	$0.00
Exercise	Common Stock	1,036	$95.82	$99K
Exercise Price or Tax Liability	Common Stock	454	$95.82	$44K
holding	Common Stock	--	--	--

Holdings After Transaction: Restricted Stock Units - 6 — 1,036 contracts (Direct); Common Stock — 15,044 shares (Direct); Common Stock — 100 shares (Indirect, Custodian)

Footnotes (4)

1. F1. Each RSU represents a contingent right to receive one share of the Issuer's common stock
2. F2. RSUs that vest 1/3 on June 21, 2024 and each of the next two anniversary dates
3. F3. Not Applicable
4. F4. Consists of 100 shares held by children of which Mr. Sakys is custodian

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Accepted by SEC EDGAR 06/25/2025 - 09:14 AM Learn about SEC filing dates

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^*

Sakys John

(Last) (First) (Middle)

MESA LABORATORIES, INC.

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)
	CFO

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		1,036	A	$95.82	15,498	D
Common Stock	06/21/2025		F		454	D	$95.82	15,044	D
Common Stock								100	I	Custodian(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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units - 6	(1)	06/21/2025		M			1,036	(2)	(3)	Common Stock	1,036	$0	1,036	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

4. Consists of 100 shares held by children of which Mr. Sakys is custodian

	John Sakys	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.