Mesa Laboratories Inc

MLAB

Exchange: Nasdaq
Industry: Industrial Instruments For Measurement, Display, and Control
SEC CIK: 0000724004

SEC filings (opens in a new tab)

In the last 90 days, Mesa Laboratories Inc insiders filed 2 open-market purchases and 1 sale; 159 institutions reported holding it in 13F filings for Q2 2026, worth $500.8M in total; no superinvestor holds it.

Q2 2025 vs. Q1 2025

How the institutions holding Mesa Laboratories Inc changed between Q1 2025 and Q2 2025.

All holders in Q2 2025 All holders in Q1 2025

13F holders of MLAB: Q1 2025 compared with Q2 2025
Measure	Q1 2025	Of which not filed for Q2 2025	Q2 2025	Change
Holders	151	2	155	+6
Shares	5.17M	162.2K	5.19M	+184.9K (+3.7%)
Value	$613.4M	$19.2M	$489.1M	−$105.0M (−17.7%)

2 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (25)

Institutions that held Mesa Laboratories Inc at the end of Q2 2025 but not at the end of Q1 2025.

Institutions new to MLAB in Q2 2025
Institution	Shares	Value	% of portfolio
Glenmede Investment Management, LP	142,508	$13.4M	0.07%
Millennium Management LLC	57,710	$5.44M	0.00%
Gabelli Funds LLC	25,156	$2.37M	0.02%
Wellington Management Group LLP	22,471	$2.12M	0.00%
D. E. Shaw & Co., Inc.	8,665	$816.4K	0.00%
Dynamic Technology Lab Private Ltd	4,801	$452.0K	0.06%
Tudor Investment Corp Et Al	4,202	$395.9K	0.00%
Trexquant Investment LP	4,020	$378.8K	0.00%
Gamco Investors, Inc. Et Al	3,930	$370.3K	0.00%
Brevan Howard Capital Management LP	2,299	$216.6K	0.00%
Virtu Financial LLC	2,226	$210.0K	0.01%
MQS Management LLC	2,194	$206.7K	0.11%
Aquatic Capital Management LLC	654	$61.6K	0.00%
Global Retirement Partners, LLC	255	$24.0K	0.00%
Hilltop National Bank	200	$18.8K	0.00%
Annis Gardner Whiting Capital Advisors, LLC	94	$8.86K	0.00%
BNP PARIBAS ASSET MANAGEMENT Holding S.A.	62	$6.00K	0.00%
IFP Advisors, Inc	0	$5.46K	0.00%
Advisor Group Holdings, Inc.	49	$4.76K	0.00%
Northwestern Mutual Wealth Management Co	18	$1.70K	0.00%
Rothschild Investment LLC	5	$471	0.00%
Jones Financial Companies LLLP	2	$197	0.00%
Parkside Financial Bank & Trust	1	$95	0.00%
TFC Financial Management	1	$95	0.00%
Twin Peaks Wealth Advisors, LLC	1	$63	0.00%

Sold out (19)

Institutions that held Mesa Laboratories Inc at the end of Q1 2025 and filed for Q2 2025 without it.

Institutions that sold out of MLAB in Q2 2025
Institution	Shares, Q1 2025	Value, Q1 2025
Lazard Asset Management LLC	11,360	$1.35M
Mackenzie Financial Corp	5,247	$622.6K
Jacobs Levy Equity Management, Inc	2,820	$334.6K
Corebridge Financial, Inc.	2,700	$320.4K
SG Americas Securities, LLC	2,461	$292.0K
Verition Fund Management LLC	2,100	$249.2K
Yousif Capital Management, LLC	2,061	$244.6K
Avantax Advisory Services, Inc.	2,036	$241.6K
Manufacturers Life Insurance Company, The	1,879	$223.0K
Resona Asset Management Co.,Ltd.	595	$71.1K
Amundi	593	$67.9K
Quantbot Technologies LP	567	$67.3K
Quadrant Capital Group LLC	120	$14.2K
Coldstream Capital Management Inc	57	$6.76K
Millstone Evans Group, LLC	40	$4.75K
Mather Group, LLC.	26	$3.08K
Versant Capital Management, Inc	23	$2.73K
Boston Private Wealth LLC	2	$237
True Wealth Design, LLC	1	$119

Not filed for Q2 2025 yet (2)

Institutions that held Mesa Laboratories Inc at the end of Q1 2025 and haven't filed a 13F for Q2 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MLAB in Q1 2025 that haven't filed for Q2 2025
Institution	Shares, Q1 2025	Value, Q1 2025
Glenmede Trust Co NA	146,544	$17.4M
Keeley-Teton Advisors, LLC	15,678	$1.86M