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.

Q4 2025 vs. Q3 2025

How the institutions holding Mesa Laboratories Inc changed between Q3 2025 and Q4 2025.

All holders in Q4 2025 All holders in Q3 2025

13F holders of MLAB: Q3 2025 compared with Q4 2025
Measure	Q3 2025	Of which not filed for Q4 2025	Q4 2025	Change
Holders	141	5	159	+23
Shares	4.98M	179.6K	4.74M	−60.2K (−1.3%)
Value	$334.0M	$12.0M	$372.5M	+$50.5M (+15.7%)

5 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (35)

Institutions that held Mesa Laboratories Inc at the end of Q4 2025 but not at the end of Q3 2025.

Institutions new to MLAB in Q4 2025
Institution	Shares	Value	% of portfolio
Long Path Partners LP	227,223	$17.8M	6.10%
Irenic Capital Management LP	25,000	$1.96M	0.26%
Franklin Resources Inc	22,074	$1.73M	0.00%
Connor, Clark & Lunn Investment Management Ltd.	14,369	$1.13M	0.00%
Quadrature Capital Ltd	13,528	$1.06M	0.01%
Point72 Asset Management, L.P.	13,458	$1.06M	0.00%
Man Group plc	13,387	$1.05M	0.00%
XTX Topco Ltd	12,601	$989.2K	0.03%
ExodusPoint Capital Management, LP	6,937	$544.6K	0.01%
Arrowstreet Capital, Limited Partnership	6,228	$488.9K	0.00%
Dynamic Technology Lab Private Ltd	6,190	$486.0K	0.11%
Graham Capital Management, L.P.	3,723	$292.3K	0.01%
Canada Pension Plan Investment Board	3,700	$290.4K	0.00%
Quantinno Capital Management LP	3,661	$287.4K	0.00%
Skopos Labs, Inc.	3,576	$285.9K	0.01%
SG Americas Securities, LLC	3,609	$283.0K	0.00%
Cerity Partners LLC	3,361	$263.8K	0.00%
Mariner, LLC	3,313	$260.1K	0.00%
Engineers Gate Manager LP	3,031	$237.9K	0.00%
Squarepoint Ops LLC	2,747	$215.6K	0.00%
State Board of Administration of Florida Retirement System	2,564	$201.3K	0.00%
Kestra Advisory Services, LLC	700	$55.0K	0.00%
Sound Income Strategies, LLC	40	$3.56K	0.00%
Los Angeles Capital Management LLC	34	$2.58K	0.00%
SageView Advisory Group, LLC	30	$2.35K	0.00%
Larson Financial Group LLC	17	$1.33K	0.00%
Parkside Financial Bank & Trust	10	$785	0.00%
Quadrant Capital Group LLC	10	$785	0.00%
MAI Capital Management	9	$707	0.00%
Cornerstone Financial Management LLC	7	$550	0.00%
Sunbelt Securities, Inc.	5	$392	0.00%
Tucker Asset Management LLC	3	$236	0.00%
SJS Investment Consulting Inc.	2	$157	0.00%
Hughes Financial Services, LLC	1	$79	0.00%
Gilpin Wealth Management, LLC	1	$79	0.00%

Sold out (12)

Institutions that held Mesa Laboratories Inc at the end of Q3 2025 and filed for Q4 2025 without it.

Institutions that sold out of MLAB in Q4 2025
Institution	Shares, Q3 2025	Value, Q3 2025
Conestoga Capital Advisors, LLC	426,457	$28.6M
Simcoe Capital Management, LLC	190,929	$12.8M
Ameriprise Financial Inc	39,095	$2.62M
Victory Capital Management Inc	10,455	$700.6K
Brevan Howard Capital Management LP	5,977	$400.5K
Susquehanna International Group, LLP	4,193	$281.0K
State of Tennessee, Treasury Department	1,238	$83.0K
Fifth Third Bancorp	264	$17.7K
State of Wyoming	198	$13.3K
Optiver Holding B.V.	38	$2.55K
Principal Securities, Inc.	21	$1.41K
Northwestern Mutual Wealth Management Co	6	$402

Not filed for Q4 2025 yet (5)

Institutions that held Mesa Laboratories Inc at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MLAB in Q3 2025 that haven't filed for Q4 2025
Institution	Shares, Q3 2025	Value, Q3 2025
Kent Lake PR LLC	134,516	$9.01M
Cubist Systematic Strategies, LLC	35,988	$2.41M
Point72 Asia (Singapore) Pte. Ltd.	5,485	$367.6K
Glenmede Investment Management, LP	3,010	$201.7K
Point72 (DIFC) Ltd	576	$38.6K