Mesa Laboratories Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

DB:MLI Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
13 Aug 26	Buy€88,692	R. Tripeny	Individual	900	€98.55
13 Aug 26	Buy€693,518	Siddhartha Kadia	Individual	7,093	€97.78
13 Aug 26	Sell€693,518	John Sullivan	Individual	7,093	€97.78
22 Jun 26	Sell€196,768	Brian Archbold	Individual	2,516	€78.21
16 Jun 26	Sell€106,734	John Sakys	Individual	1,223	€87.27
16 Jun 26	Sell€100,450	Brian Archbold	Individual	1,151	€87.27
16 Jun 26	Sell€10,298	Lyndsey Crennen	Individual	118	€87.27
10 Mar 26	Buy€217,084	Shiraz Ladiwala	Individual	3,500	€62.02
10 Mar 26	Buy€85,818	R. Tripeny	Individual	1,315	€65.26
10 Mar 26	Buy€85,296	Mark Capone	Individual	1,301	€65.56

Insider Trading Volume

Insider Buying: MLI insiders have sold more shares than they have bought in the past 3 months.

Ownership Breakdown

What is the ownership structure of MLI?
Owner Type	Number of Shares	Ownership Percentage
General Public	104,378	1.87%
Individual Insiders	173,280	3.1%
Hedge Funds	477,126	8.53%
Institutions	4,841,085	86.5%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 71.89% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
8.53%	Long Path Partners, LP	477,126	€48.7m	17.6%	6.48%
7.87%	BlackRock, Inc.	440,552	€44.9m	11.9%	no data
4.95%	Vanguard Capital Management, LLC	276,993	€28.3m	2.22%	no data
4.74%	Boston Partners Global Investors, Inc.	265,149	€27.1m	-1.33%	0.01%
3.61%	AQR Capital Management, LLC	202,101	€20.6m	19.6%	0.01%
3.19%	Nationwide Fund Advisors	178,713	€18.2m	0%	0.09%
3.11%	Ranger Investment Management, L.P.	173,988	€17.8m	-14.3%	1.23%
2.78%	Diamond Hill Capital Management, Inc.	155,771	€15.9m	0.3%	0.13%
2.68%	Raymond James Financial, Inc.	149,937	€15.3m	22%	no data
2.65%	Dimensional Fund Advisors LP	148,395	€15.1m	19.1%	no data
2.5%	Geode Capital Management, LLC	139,682	€14.3m	9.12%	no data
2.47%	Kennedy Capital Management LLC	138,301	€14.1m	-2.84%	0.26%
2.34%	Jacobs Levy Equity Management Inc	130,838	€13.3m	195%	0.05%
2.22%	State Street Investment Management	124,292	€12.7m	1.82%	no data
2.18%	Russell Investment Management, LLC	121,845	€12.4m	-9.79%	0.01%
2.14%	Eaton Vance Management	119,616	€12.2m	-14.5%	no data
2.07%	Wasatch Advisors LP	115,668	€11.8m	126%	0.04%
2.03%	Royce & Associates, LP	113,395	€11.6m	-29.7%	0.09%
1.77%	Crawford Investment Counsel, Inc.	98,805	€10.1m	3.42%	0.17%
1.59%	FMR LLC	88,739	€9.1m	1,280%	no data
1.46%	D. E. Shaw & Co., L.P.	81,755	€8.3m	49.9%	0.01%
1.28%	Jane Street Group, LLC	71,580	€7.3m	0%	no data
1.27%	GAMCO Investors, Inc.	70,839	€7.2m	0.72%	0.03%
1.24%	Janus Henderson Group Ltd.	69,401	€7.1m	0%	no data
1.24%	Vanguard Portfolio Management, LLC	69,350	€7.1m	31.9%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/08/21 01:10
End of Day Share Price	2026/08/21 00:00
Earnings	2026/06/30
Annual Earnings	2026/03/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Mesa Laboratories, Inc. is covered by 8 analysts. 3 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Paul Knight	Brean Capital Historical (Janney Montgomery)
Vijay Kumar	Evercore ISI
Tycho Peterson	Jefferies LLC