Mesa Labs (NASDAQ: MLAB) CEO trust buys shares from board chair

Rhea-AI Filing Summary

Mesa Laboratories (MLAB) President and CEO Siddhartha Kadia reported that the Anjou Parekh Lifetime Access Trust, for which his spouse serves as trustee, purchased 7,093 shares of Common Stock at $112.80 per share in a private transaction from Board Chair John Sullivan. The trust now holds 7,093 shares, reported as indirect ownership. Kadia disclaims beneficial ownership of the trust’s shares except to the extent of his pecuniary interest. The transaction was not reported as made under a Rule 10b5-1 trading plan.

Insider Trade Summary

Net Buyer: 7,093 shares

Net Buy 1 txn

Insider Kadia Siddhartha

Role President and CEO

Bought 7,093 shs ($800K)

Type	Security	Shares	Price	Value
Purchase	Common Stock F1, F2	7,093	$112.80	$800K

Holdings After Transaction: Common Stock — 7,093 shares (Indirect, By Trust)

Footnotes (2)

1. F1. Represents shares purchased directly in a private transaction from John Sullivan, Mesa Board Chair by the Anjou Parekh Lifetime Access Trust for which the reporting person's spouse serves as trustee.
2. F2. Represents shares held by the Anjou Parekh Lifetime Access Trust for which the reporting person's spouse serves as trustee. The reporting person disclaims beneficial ownership of the securities held by the trust except to the extent of his pecuniary interest therein.

Key Figures

Shares purchased: 7,093 shares Purchase price: $112.80 per share Shares held after transaction: 7,093 shares +1 more

4 metrics

Shares purchased 7,093 shares Common Stock acquired by related trust on 2026-08-13

Purchase price $112.80 per share Price paid in private transaction for MLAB Common Stock

Shares held after transaction 7,093 shares Indirectly held by Anjou Parekh Lifetime Access Trust following purchase

Net shares bought 7,093 shares Net buy volume across all reported transactions in this Form 4

Key Terms

indirect ownership, pecuniary interest, private transaction, trustee

4 terms

indirect ownership financial

"These shares are reported as indirect ownership held by a related trust"

pecuniary interest financial

"disclaims beneficial ownership except to the extent of his pecuniary interest"

private transaction financial

"shares purchased directly in a private transaction from John Sullivan"

A private transaction is the sale or transfer of securities, assets, or ownership stakes carried out directly between a small number of parties rather than on a public exchange. For investors it matters because these deals are less visible and often less liquid than public trades, so pricing can be harder to verify, the investment can be harder to sell quickly, and buyers or sellers may gain strategic advantages not available in open markets — like negotiated terms similar to a private garage sale versus a crowded marketplace.

trustee financial

"for which the reporting person's spouse serves as trustee"

A trustee is a person or institution legally appointed to hold and manage assets or enforce an agreement on behalf of other people (beneficiaries). Think of a trustee as a neutral referee or custodian who must act in the beneficiaries’ best interests, follow the trust or contract rules, and handle distributions, recordkeeping and enforcement. Investors care because a trustworthy trustee protects their rights, ensures promised payments or remedies are delivered, and can influence recoveries if things go wrong.

FAQ

What insider transaction did MLAB President and CEO Siddhartha Kadia report on this Form 4?

Kadia reported that a related trust purchased 7,093 MLAB common shares at $112.80 in a private transaction from Board Chair John Sullivan. The shares are held indirectly by the Anjou Parekh Lifetime Access Trust, with Kadia’s spouse serving as trustee.

At what price were the Mesa Laboratories (MLAB) shares purchased in the reported insider transaction?

The trust purchased the MLAB shares at $112.80 per share. This price applied to all 7,093 common shares acquired in the private transaction from Mesa’s Board Chair, as disclosed in the Form 4 filing for President and CEO Siddhartha Kadia.

How many Mesa Laboratories (MLAB) shares does the related trust hold after the reported transaction?

After the transaction, the Anjou Parekh Lifetime Access Trust holds 7,093 MLAB common shares. These shares are reported as indirect ownership, and Siddhartha Kadia disclaims beneficial ownership except to the extent of his pecuniary interest in the trust’s holdings.

Was the reported MLAB insider share purchase made under a Rule 10b5-1 trading plan?

No. The Form 4 indicates the Rule 10b5-1 checkbox is not selected, meaning the 7,093-share purchase by the related trust was not reported as being executed under a Rule 10b5-1 or similar pre-arranged trading plan.

Who sold the shares in the Mesa Laboratories (MLAB) insider transaction disclosed in this Form 4?

The 7,093 MLAB common shares were purchased in a private transaction from John Sullivan, Mesa Laboratories’ Board Chair. The buyer was the Anjou Parekh Lifetime Access Trust, for which President and CEO Siddhartha Kadia’s spouse serves as trustee.

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/17/2026 - 11:50 AM Accepted by SEC EDGAR 08/17/2026 - 11:49 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^*

Kadia Siddhartha

(Last) (First) (Middle)

7475 LUSK BOULEVARD

(Street)

SAN DIEGO CALIFORNIA 92121

(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)
08/13/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/13/2026		P(1)		7,093	A	$112.8	7,093	I	By Trust(2)

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:

1. Represents shares purchased directly in a private transaction from John Sullivan, Mesa Board Chair by the Anjou Parekh Lifetime Access Trust for which the reporting person's spouse serves as trustee.

2. Represents shares held by the Anjou Parekh Lifetime Access Trust for which the reporting person's spouse serves as trustee. The reporting person disclaims beneficial ownership of the securities held by the trust except to the extent of his pecuniary interest therein.

	John Sakys under Power of Attorney by Siddhartha Kadia	08/17/2026
	** 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)