WallStreetZenWallStreetZen

NASDAQ: MLAB
Mesa Laboratories Inc Stock Ownership - Who owns Mesa Laboratories?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Mesa Laboratories Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Shiraz Shabanali LadiwalaDirector2026-03-103,500$72.23
$252.81kBuy
R. Tony TripenyDirector2026-03-101,315$76.00
$99.94kBuy
Mark Christopher CaponeDirector2026-03-101,301$76.35
$99.33kBuy
John SakysCFO2025-06-21454$95.82
$43.50kSell
Brian David ArchboldSVP Operations2025-06-21385$95.82
$36.89kSell
John SakysCFO2025-06-211,036$95.82
$99.27kBuy
Brian David ArchboldSVP Operations2025-06-21844$95.82
$80.87kBuy
Gary M. OwensPresident and CEO2025-06-213,301$95.82
$316.30kBuy
Gary M. OwensPresident and CEO2025-06-211,445$95.82
$138.46kSell
Gary M. OwensPresident and CEO2025-06-183,810$92.99
$354.29kSell

1 of 2

MLAB insiders have bought more... subscribe to Premium to read more.
Net Insider Buy/Sell (L12M) Ownership

Be the first to know when MLAB insiders and whales buy or sell their stock.

MLAB Shareholders

What type of owners hold Mesa Laboratories Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Blackrock Inc7.22%398,666$32.90MInstitution
Vanguard Group Inc5.83%321,899$26.56MInstitution
Long Path Partners LP4.11%227,223$18.75MInstitution
Boston Partners3.86%213,376$17.61MInstitution
Select Equity Group LP3.74%206,435$17.04MInstitution
Ranger Investment Management LP3.72%205,263$16.94MInstitution
Evan Guillemin3.63%200,512$16.55MInsider
Geneva Capital Management LLC3.23%178,713$14.75MInstitution
Luke R. Schmieder3.19%176,293$14.55MInsider
Morgan Stanley3.18%175,589$14.49MInstitution

1 of 3

MLAB vs Scientific & Technical Instrument Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
MLAB84.12%15.88%Net BuyingNet Buying
VPG72.52%27.48%Net SellingNet Selling
MVIS27.42%9.95%Net BuyingNet Buying
USBC0.48%99.52%Net Buying
ODYS28.57%43.57%Net SellingNet Selling
View Top Scientific & Technical Instrument Stocks

Mesa Laboratories Stock Ownership FAQ

Who owns Mesa Laboratories?

Mesa Laboratories (NASDAQ: MLAB) is owned by 85.82% institutional shareholders, 16.20% Mesa Laboratories insiders, and 0.00% retail investors. Evan Guillemin is the largest individual Mesa Laboratories shareholder, owning 200,512.00 shares representing 3.63% of the company. Evan Guillemin's Mesa Laboratories shares are currently valued at $16.04M.

If you're new to stock investing, here's how to buy Mesa Laboratories stock.
©2026 WallStreetZen
Company
AboutNewsBlogStock Investing FAQPlansPrivacy PolicyTerms of ServiceCancellation & RefundsPerformanceHelp GuidesContactTwitterYouTubeNewsletter
Stock Tools
Top Performing AnalystsStock ScreenerStock ForecastTrending StocksStrong Buy StocksHighest Earnings StocksBest Dividend Paying StocksStatisticsStock Market SectorsStock Market IndustriesHow to Buy Stocks Online
Stock Ideas
Buy The DipBiggest Stock Gainers TodayBiggest Stock Losers Today52 Week High Stocks52 Week Low StocksMost Active Stocks TodayMost Undervalued StocksBest Penny Stocks to Buy NowBest Stocks Under $5Best Stocks Under $10
WallStreetZen does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.

Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.