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MLAB Insider Trading

Insider Ownership Percentage: 4.90%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $2,898,617.36

Mesa Laboratories Insider Trading History Chart

This chart shows the insider buying and selling history at Mesa Laboratories by year and by quarter.

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Mesa Laboratories Share Price & Price History

Current Price: $95.24
Price Change: ▲ Price Increase of +1.41 (1.50%)
As of 02/24/2026 05:00 PM ET

This chart shows the closing price history over time for MLAB up to the past year.

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Days: 30 | 90 | 365

Mesa Laboratories Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
6/16/2025Brian David ArchboldSVPSell472$97.12$45,840.64558View SEC Filing Icon  
6/16/2025Gary M. OwensCEOSell1,939$97.12$188,315.6845,824View SEC Filing Icon  
6/16/2025John SakysCFOSell642$97.12$62,351.0412,865View SEC Filing Icon  
3/19/2025Gary M. OwensCEOSell21,000$123.91$2,602,110.0043,337View SEC Filing Icon  
10/28/2024Gary M. OwensCEOSell2,518$113.62$286,095.1645,888View SEC Filing Icon  
9/13/2024Brian David ArchboldSVPSell1,499$125.00$187,375.00View SEC Filing Icon  
12/15/2023Brian David ArchboldSVPSell1,500$112.36$168,540.00558View SEC Filing Icon  
9/15/2023John Bradley SchmiederDirectorSell1,000$123.74$123,740.0062,760View SEC Filing Icon  
9/13/2023John Bradley SchmiederDirectorSell3,000$123.32$369,960.0066,760View SEC Filing Icon  
9/1/2023Gary M. OwensCEOSell2,000$142.82$285,640.0030,032View SEC Filing Icon  
3/24/2023John SakysCFOSell2,128$167.01$355,397.289,696View SEC Filing Icon  
3/22/2023John SakysCFOSell2,500$171.62$429,050.009,696View SEC Filing Icon  
3/15/2023John SakysCFOSell1,000$165.71$165,710.009,696View SEC Filing Icon  
3/9/2023John SakysCFOSell400$169.97$67,988.009,696View SEC Filing Icon  
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SEC Filings (Institutional Ownership Changes) for Mesa Laboratories (NASDAQ:MLAB)

90.60% of Mesa Laboratories stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at MLAB by year and by quarter.

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Mesa Laboratories Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
2/19/2026Invesco Ltd.12,845$1.01M0.0%+11.7%0.233%Search for SEC Filing on Google Icon
2/18/2026XTX Topco Ltd12,601$0.99M0.0%N/A0.228%Search for SEC Filing on Google Icon
2/18/2026Tudor Investment Corp ET AL27,426$2.15M0.0%+332.5%0.496%Search for SEC Filing on Google Icon
2/18/2026Quadrature Capital Ltd13,528$1.06M0.0%N/A0.245%Search for SEC Filing on Google Icon
2/18/2026Numerai GP LLC14,909$1.17M0.1%+313.0%0.270%Search for SEC Filing on Google Icon
2/18/2026Millennium Management LLC4,465$0.35M0.0%-96.7%0.081%Search for SEC Filing on Google Icon
2/18/2026Man Group plc13,387$1.05M0.0%N/A0.242%Search for SEC Filing on Google Icon
2/18/2026Irenic Capital Management LP25,000$1.96M0.1%N/A0.452%Search for SEC Filing on Google Icon
2/18/2026Janus Henderson Group PLC116,642$9.16M0.0%-19.9%2.111%Search for SEC Filing on Google Icon
2/18/2026Engineers Gate Manager LP3,031$0.24M0.0%N/A0.055%Search for SEC Filing on Google Icon
2/18/2026Balyasny Asset Management L.P.3,792$0.30M0.0%-4.5%0.069%Search for SEC Filing on Google Icon
2/17/2026AQR Capital Management LLC70,138$5.51M0.0%+114.9%1.271%Search for SEC Filing on Google Icon
2/17/2026Trexquant Investment LP46,121$3.62M0.0%+83.8%0.836%Search for SEC Filing on Google Icon
2/17/2026Price T Rowe Associates Inc. MD3,141$0.25M0.0%-23.6%0.057%Search for SEC Filing on Google Icon
2/17/2026Monimus Capital Management LP40,842$3.21M2.1%+21.0%0.740%Search for SEC Filing on Google Icon
2/17/2026Russell Investments Group Ltd.116,337$9.13M0.0%+17.3%2.108%Search for SEC Filing on Google Icon
2/17/2026Crawford Investment Counsel Inc.81,220$6.38M0.1%-1.5%1.471%Search for SEC Filing on Google Icon
2/17/2026State of Wisconsin Investment Board22,606$1.78M0.0%+22.8%0.410%Search for SEC Filing on Google Icon
2/17/2026ExodusPoint Capital Management LP6,937$0.55M0.0%N/A0.126%Search for SEC Filing on Google Icon
2/17/2026Royal Bank of Canada5,457$0.43M0.0%-79.7%0.099%Search for SEC Filing on Google Icon
2/17/2026Graham Capital Management L.P.3,723$0.29M0.0%N/A0.067%Search for SEC Filing on Google Icon
2/17/2026Rice Hall James & Associates LLC14,217$1.12M0.1%-17.1%0.258%Search for SEC Filing on Google Icon
2/17/2026Meros Investment Management LP85,017$6.67M2.6%+11.2%1.540%Search for SEC Filing on Google Icon
2/16/2026Squarepoint Ops LLC2,747$0.22M0.0%N/A0.050%Search for SEC Filing on Google Icon
2/16/2026Mariner LLC3,313$0.26M0.0%N/A0.060%Search for SEC Filing on Google Icon
2/16/2026Kennedy Capital Management LLC144,606$11.35M0.2%+19.0%2.620%Search for SEC Filing on Google Icon
2/16/2026Barclays PLC8,186$0.64M0.0%+6.8%0.148%Search for SEC Filing on Google Icon
2/13/2026Kestra Advisory Services LLC700$55K0.0%N/A0.013%Search for SEC Filing on Google Icon
2/13/2026Marshall Wace LLP7,137$0.56M0.0%-51.1%0.129%Search for SEC Filing on Google Icon
2/13/2026Stifel Financial Corp11,275$0.89M0.0%+11.6%0.204%Search for SEC Filing on Google Icon
2/13/2026Jacobs Levy Equity Management Inc.38,842$3.05M0.0%+907.1%0.704%Search for SEC Filing on Google Icon
2/13/2026Charles Schwab Investment Management Inc.61,913$4.86M0.0%+13.4%1.122%Search for SEC Filing on Google Icon
2/13/2026State Street Corp120,641$9.47M0.0%+1.4%2.186%Search for SEC Filing on Google Icon
2/13/2026Boston Partners213,376$16.75M0.0%+86.6%3.866%Search for SEC Filing on Google Icon
2/13/2026Dynamic Technology Lab Private Ltd6,190$0.49M0.1%N/A0.112%Search for SEC Filing on Google Icon
2/13/2026Caitong International Asset Management Co. Ltd341$27K0.1%N/A0.006%Search for SEC Filing on Google Icon
2/13/2026Wells Fargo & Company MN5,752$0.45M0.0%+11.1%0.104%Search for SEC Filing on Google Icon
2/12/2026Jane Street Group LLC56,371$4.43M0.0%+47.5%1.021%Search for SEC Filing on Google Icon
2/12/2026Brooklyn Investment Group3,576$0.29M0.0%-24.1%0.065%Search for SEC Filing on Google Icon
2/12/2026State Board of Administration of Florida Retirement System2,564$0.20M0.0%N/A0.046%Search for SEC Filing on Google Icon
2/12/2026Renaissance Technologies LLC3,500$0.28M0.0%-67.9%0.063%Search for SEC Filing on Google Icon
2/12/2026Dimensional Fund Advisors LP116,363$9.14M0.0%-0.4%2.108%Search for SEC Filing on Google Icon
2/12/2026EntryPoint Capital LLC3,469$0.27M0.1%-18.3%0.063%Search for SEC Filing on Google Icon
2/12/2026Geneva Capital Management LLC178,713$14.03M0.3%-6.6%3.238%Search for SEC Filing on Google Icon
2/11/2026Deutsche Bank AG4,440$0.35M0.0%+5.9%0.080%Search for SEC Filing on Google Icon
2/11/2026Cerity Partners LLC3,361$0.26M0.0%N/A0.061%Search for SEC Filing on Google Icon
2/11/2026LPL Financial LLC4,984$0.39M0.0%-14.3%0.090%Search for SEC Filing on Google Icon
2/11/2026Franklin Resources Inc.22,074$1.73M0.0%N/A0.400%Search for SEC Filing on Google Icon
2/10/2026Goldman Sachs Group Inc.55,268$4.34M0.0%+32.3%1.001%Search for SEC Filing on Google Icon
2/10/2026Northwestern Mutual Wealth Management Co.328$26K0.0%+5,366.7%0.006%Search for SEC Filing on Google Icon
2/9/2026King Luther Capital Management Corp17,411$1.37M0.0%-12.6%0.315%Search for SEC Filing on Google Icon
2/9/2026Royce & Associates LP153,352$12.04M0.1%+3.2%2.778%Search for SEC Filing on Google Icon
2/6/2026Diamond Hill Capital Management Inc.141,973$11.15M0.1%+15.1%2.572%Search for SEC Filing on Google Icon
2/6/2026GSA Capital Partners LLP11,614$0.91M0.1%+7.9%0.210%Search for SEC Filing on Google Icon
2/5/2026Gamco Investors INC. ET AL7,754$0.61M0.0%-5.6%0.140%Search for SEC Filing on Google Icon
2/5/2026Gabelli Funds LLC60,724$4.77M0.0%+12.5%1.100%Search for SEC Filing on Google Icon
1/26/2026CWM LLC1,485$0.12M0.0%+148.7%0.027%Search for SEC Filing on Google Icon
1/9/2026SG Americas Securities LLC3,609$0.28M0.0%N/A0.065%Search for SEC Filing on Google Icon
1/1/2026JPMorgan Chase & Co.4,321$0.29M0.0%-14.2%0.078%Search for SEC Filing on Google Icon
1/1/2026Tudor Investment Corp ET AL6,341$0.43M0.0%+50.9%0.115%Search for SEC Filing on Google Icon
12/9/2025Tudor Investment Corp ET AL6,341$0.43M0.0%+50.9%0.115%Search for SEC Filing on Google Icon
11/17/2025Jacobs Levy Equity Management Inc.3,857$0.26M0.0%N/A0.070%Search for SEC Filing on Google Icon
11/17/2025Susquehanna International Group LLP4,193$0.28M0.0%-61.7%0.076%Search for SEC Filing on Google Icon
11/17/2025Qube Research & Technologies Ltd30,725$2.06M0.0%+54.4%0.556%Search for SEC Filing on Google Icon
11/17/2025Numerai GP LLC3,610$0.24M0.0%N/A0.065%Search for SEC Filing on Google Icon
11/17/2025Mason Capital Management LLC70,300$4.71M1.0%N/A1.273%Search for SEC Filing on Google Icon
11/17/2025Millennium Management LLC133,817$8.97M0.0%+131.9%2.423%Search for SEC Filing on Google Icon
11/17/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.2,476$0.17M0.0%-12.8%0.045%Search for SEC Filing on Google Icon
11/17/2025Citadel Advisors LLC34,178$2.29M0.0%+27.2%0.619%Search for SEC Filing on Google Icon
11/17/2025Brevan Howard Capital Management LP5,977$0.40M0.0%+160.0%0.108%Search for SEC Filing on Google Icon
11/17/2025Crawford Investment Counsel Inc.82,467$5.53M0.1%+59.4%1.493%Search for SEC Filing on Google Icon
11/17/2025Bank of America Corp DE47,099$3.16M0.0%-27.5%0.853%Search for SEC Filing on Google Icon
11/17/2025Aquatic Capital Management LLC3,610$0.24M0.0%+452.0%0.065%Search for SEC Filing on Google Icon
11/17/2025Alliancebernstein L.P.5,424$0.36M0.0%-4.2%0.098%Search for SEC Filing on Google Icon
11/17/2025Ameriprise Financial Inc.39,095$2.62M0.0%-46.8%0.708%Search for SEC Filing on Google Icon
11/14/2025Creative Planning8,732$0.59M0.0%+37.4%0.159%Search for SEC Filing on Google Icon
11/14/2025Raymond James Financial Inc.47,402$3.18M0.0%-74.5%0.862%Search for SEC Filing on Google Icon
11/14/2025Brooklyn Investment Group4,710$0.32M0.0%+4,806.3%0.086%Search for SEC Filing on Google Icon
11/14/2025Two Sigma Investments LP9,623$0.65M0.0%N/A0.175%Search for SEC Filing on Google Icon
11/14/2025Comerica Bank42,388$2.84M0.0%-4.2%0.770%Search for SEC Filing on Google Icon
11/14/2025Simcoe Capital Management LLC190,929$12.79M1.9%N/A3.470%Search for SEC Filing on Google Icon
11/14/2025Glenmede Investment Management LP3,010$0.20M0.0%-97.9%0.055%Search for SEC Filing on Google Icon
11/13/2025Boston Partners114,357$7.66M0.0%+2,009.5%2.078%Search for SEC Filing on Google Icon
11/13/2025Kennedy Capital Management LLC121,546$8.15M0.2%+34.3%2.209%Search for SEC Filing on Google Icon
11/13/2025Sei Investments Co.5,525$0.37M0.0%+26.7%0.100%Search for SEC Filing on Google Icon
11/13/2025UBS Group AG19,161$1.28M0.0%-38.8%0.348%Search for SEC Filing on Google Icon
11/13/2025Geneva Capital Management LLC191,386$12.83M0.2%-3.9%3.478%Search for SEC Filing on Google Icon
11/13/2025BNP Paribas Financial Markets1,029$69K0.0%+30.9%0.019%Search for SEC Filing on Google Icon
11/13/2025Legal & General Group Plc574$38K0.0%-96.1%0.010%Search for SEC Filing on Google Icon
11/13/2025Russell Investments Group Ltd.99,187$6.65M0.0%-97.7%1.803%Search for SEC Filing on Google Icon
11/12/2025Gabelli Funds LLC53,974$3.62M0.0%+114.6%0.981%Search for SEC Filing on Google Icon
11/12/2025Gamco Investors INC. ET AL8,212$0.55M0.0%+109.0%0.149%Search for SEC Filing on Google Icon
11/12/2025Dimensional Fund Advisors LP116,772$7.82M0.0%+1.3%2.122%Search for SEC Filing on Google Icon
11/12/2025Victory Capital Management Inc.10,455$0.70M0.0%+448.0%0.190%Search for SEC Filing on Google Icon
11/12/2025Roubaix Capital LLC76,657$5.14M2.4%N/A1.393%Search for SEC Filing on Google Icon
11/12/2025Royce & Associates LP148,558$9.96M0.1%-40.0%2.700%Search for SEC Filing on Google Icon
11/12/2025Quantbot Technologies LP2,662$0.18M0.0%N/A0.048%Search for SEC Filing on Google Icon
11/12/2025US Bancorp DE702$47K0.0%-42.2%0.013%Search for SEC Filing on Google Icon
11/7/2025GSA Capital Partners LLP10,768$0.72M0.1%+70.6%0.196%Search for SEC Filing on Google Icon
11/7/2025Vanguard Group Inc.321,717$21.56M0.0%-17.4%5.847%Search for SEC Filing on Google Icon
Data available starting January 2016

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Mesa Laboratories logo
Mesa Laboratories, Inc. develops, designs, manufactures, sells, and services life sciences tools and quality control products and services in North America, Europe, the Asia Pacific, and internationally. The Sterilization and Disinfection Control segment offers biological, chemical, and cleaning indicators, used to assess the effectiveness of sterilization decontamination, disinfection, and cleaning processes in the pharmaceutical, medical device, and healthcare industries. This segment also provides testing and laboratory services to the dental and pharmaceutical industries. The Clinical Genomics segment offers MassARRAY, a genetic analysis tool system, and related consumables, including chips, panels, and chemical reagent solutions used by clinical labs to analyze DNA samples for inherited genetic disease testing, pharmacogenetics, oncology testing, infectious disease testing, doping and toxicology testing, and other differentiated applications for use in research. The Biopharmaceutical Development segment provides automated systems, such as Gyrolab xPand and Gyrolab xPlore hardware and software, Gyrolab Bioaffy consumable microfluidic disks, Gyrolab kits and Rexxip buffers for protein analysis; PurePep Chorus and Symphony instruments for peptide synthesis; and PurePep EasyClean products for purifying peptides. The Calibration Solutions segment offers quality control products to measure and calibrate critical parameters in applications, such as environmental and process monitoring, dialysis, gas flow, air quality, and torque testing in medical device and pharmaceutical manufacturing, laboratory, and hospital environments. This segment's products include continuous monitoring systems, dialysate meters and consumables, data loggers, gas flow calibration and air sampling equipment, and torque testing systems, offered under DialyGuard, ViewPoint, DataTrace, DryCal, and BGI brands. The company was incorporated in 1982 and is headquartered in Lakewood, Colorado.
Read More on Mesa Laboratories

Today's Range

Now: $95.24
Low: $93.62
High: $95.58

50 Day Range

MA: $85.44
Low: $78.50
High: $95.24

52 Week Range

Now: $95.24
Low: $55.45
High: $147.59

Volume

115,187 shs

Average Volume

78,410 shs

Market Capitalization

$525.72 million

P/E Ratio

148.81

Dividend Yield

0.68%

Beta

0.89

Who are the company insiders with the largest holdings of Mesa Laboratories?

Mesa Laboratories' top insider shareholders include:
  1. Gary M Owens (CEO)
  2. John Sakys (CFO)
  3. Brian David Archbold (SVP)
Learn More about top insider investors at Mesa Laboratories.

Who are the major institutional investors of Mesa Laboratories?

Mesa Laboratories' top institutional shareholders include:
  1. Boston Partners — 3.87%
  2. Geneva Capital Management LLC — 3.24%
  3. Royce & Associates LP — 2.78%
  4. Kennedy Capital Management LLC — 2.62%
  5. Diamond Hill Capital Management Inc. — 2.57%
  6. State Street Corp — 2.19%
Learn More about top institutional investors of Mesa Laboratories stock.

Which major investors are selling Mesa Laboratories stock?

In the previous quarter, MLAB stock was sold by these institutional investors:
  1. Millennium Management LLC
  2. Janus Henderson Group PLC
  3. Royal Bank of Canada
  4. Geneva Capital Management LLC
  5. Marshall Wace LLP
  6. Renaissance Technologies LLC
  7. Rice Hall James & Associates LLC
  8. King Luther Capital Management Corp
In the previous year, company insiders that have sold Mesa Laboratories company stock include:
  1. Gary M Owens (CEO)
  2. John Sakys (CFO)
  3. Brian David Archbold (SVP)
Learn More investors selling Mesa Laboratories stock.

Which major investors are buying Mesa Laboratories stock?

In the last quarter, MLAB stock was acquired by institutional investors including:
  1. Boston Partners
  2. AQR Capital Management LLC
  3. Jacobs Levy Equity Management Inc.
  4. Irenic Capital Management LP
  5. Kennedy Capital Management LLC
  6. Franklin Resources Inc.
  7. Tudor Investment Corp ET AL
  8. Trexquant Investment LP