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

Insider buying vs selling

Have Mesa Laboratories Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
John SakysCFO2026-06-161,223$101.27
$123.85kSell
Lyndsey Elizabeth CrennenCAO2026-06-16118$101.27
$11.95kSell
Brian David ArchboldSVP Operations2026-06-161,151$101.27
$116.56kSell
John SakysCFO2026-06-152,717$104.08
$282.79kBuy
Brian David ArchboldSVP Operations2026-06-152,454$104.08
$255.41kBuy
R. Tony TripenyDirector2026-03-101,315$76.00
$99.94kBuy
Mark Christopher CaponeDirector2026-03-101,301$76.35
$99.33kBuy
Shiraz Shabanali LadiwalaDirector2026-03-103,500$72.23
$252.81kBuy

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Net Insider Buy/Sell (L12M) Ownership

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MLAB Shareholders

What type of owners hold Mesa Laboratories Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Long Path Partners LP7.34%405,583$38.57MInstitution
Blackrock Inc7.13%393,851$37.46MInstitution
Boston Partners4.86%268,711$25.55MInstitution
Select Equity Group LP4.27%235,885$22.43MInstitution
Vanguard Capital Management LLC4.21%232,643$22.12MInstitution
Ranger Investment Management LP3.67%202,903$19.30MInstitution
Evan Guillemin3.63%200,512$19.07MInsider
Luke R. Schmieder3.19%176,293$16.77MInsider
Aqr Capital Management LLC3.09%170,562$16.22MInstitution
Morgan Stanley2.93%162,116$15.42MInstitution

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MLAB vs Scientific & Technical Instrument Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
MLAB84.29%15.71%Net BuyingNet Buying
USBC0.19%99.81%
WATT8.01%91.99%Net BuyingNet Buying
MVIS26.13%9.43%Net SellingNet Selling
SOTK8.54%24.07%Net SellingNet Buying

Mesa Laboratories Stock Ownership FAQ

Who owns Mesa Laboratories?

Mesa Laboratories (NASDAQ: MLAB) is owned by 87.32% institutional shareholders, 16.28% 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 $19.07M.

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