MetaCap

Mesa Laboratories Insider Trades

NASDAQ: MLABIndustrialsIndustrial Machinery/ComponentsUSD

127.51+1.45 (+1.15%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Last 12 months

Purchases
5 · $1.35M
Sales
7 · $1.57M
Shares bought / sold
14.11K / 15.37K
Net activity
Net selling $215,729

Mesa Laboratories insider activity

Over the last 12 months, Mesa Laboratories insiders reported 32 transactions on SEC Form 4: 5 open-market purchases and 7 sales. Insiders bought $1.4 million and sold $1.6 million worth of stock, for net insider selling of $215,729. The largest seller was Sullivan John James, with $800,090 in reported sales.

The most recent filing shows Capone Mark Christopher (Director) reporting a transaction in 2,784 shares on Aug 15, 2026. Insider sales are common for compensation, tax and diversification reasons, while open-market purchases are rarer; tracking both helps put MLAB's ownership changes in context.

Summary generated from market data by MetaCap's automated system. Methodology

MLAB insider transactions

Mesa Laboratories insider transactions
DateInsiderTypeSharesValueFiling
Aug 15, 2026Sullivan John JamesDirectorOption exercise2,784—Form 4
Aug 15, 2026Tripeny R TonyDirectorOption exercise2,784—Form 4
Aug 15, 2026Hall ShannonDirectorOption exercise2,784—Form 4
Aug 15, 2026Ladiwala Shiraz ShabanaliDirectorOption exercise3,810—Form 4
Aug 15, 2026Alltoft Jennifer SadieDirectorOption exercise2,784—Form 4
Aug 15, 2026Capone Mark ChristopherDirectorOption exercise2,784—Form 4
Aug 13, 2026Kadia SiddharthaPresident and CEOBuy7,093$800.09KForm 4
Aug 13, 2026Tripeny R TonyDirectorBuy900$102.32KForm 4
Aug 13, 2026Sullivan John JamesDirectorSale7,093$800.09KForm 4
Jun 22, 2026Crennen Lyndsey ElizabethCAOSale442$39.56KForm 4
Jun 22, 2026Sakys JohnCFOSale2,827$253.02KForm 4
Jun 22, 2026Archbold Brian DavidSVP OperationsSale2,516$225.19KForm 4
Jun 18, 2026Crennen Lyndsey ElizabethCAOAward263$25.01KForm 4
Jun 18, 2026Crennen Lyndsey ElizabethCAOOption exercise368$35.00KForm 4
Jun 18, 2026Crennen Lyndsey ElizabethCAOOption exercise233$22.16KForm 4
Jun 18, 2026Crennen Lyndsey ElizabethCAOOption exercise125$11.89KForm 4
Jun 18, 2026Sakys JohnCFOAward2,282$217.02KForm 4
Jun 18, 2026Sakys JohnCFOOption exercise2,756$262.10KForm 4
Jun 18, 2026Sakys JohnCFOOption exercise1,036$98.52KForm 4
Jun 18, 2026Archbold Brian DavidSVP OperationsAward1,859$176.79KForm 4
Jun 18, 2026Archbold Brian DavidSVP OperationsOption exercise2,480$235.85KForm 4
Jun 18, 2026Archbold Brian DavidSVP OperationsOption exercise844$80.26KForm 4
Jun 16, 2026Crennen Lyndsey ElizabethCAOSale118$11.95KForm 4
Jun 16, 2026Sakys JohnCFOSale1,223$123.85KForm 4
Jun 16, 2026Archbold Brian DavidSVP OperationsSale1,151$116.56KForm 4
Jun 15, 2026Sakys JohnCFOOption exercise2,717$282.79KForm 4
Jun 15, 2026Archbold Brian DavidSVP OperationsOption exercise2,454$255.41KForm 4
Mar 10, 2026Tripeny R TonyDirectorBuy1,315$99.94KForm 4
Mar 10, 2026Capone Mark ChristopherDirectorBuy1,301$99.33KForm 4
Mar 10, 2026Ladiwala Shiraz ShabanaliDirectorBuy3,500$252.81KForm 4
Dec 2, 2025Sullivan John JamesDirectorGift2,000—Form 4
Oct 27, 2025Owens Gary MPresident and CEOOption exercise11,558—Form 4
Aug 15, 2025Capone Mark ChristopherDirectorOption exercise1,404—Form 4
Aug 15, 2025Tripeny R TonyDirectorOption exercise1,404—Form 4
Aug 15, 2025Hall ShannonDirectorOption exercise1,404—Form 4
Aug 15, 2025Alltoft Jennifer SadieDirectorOption exercise1,404—Form 4
Aug 15, 2025Sullivan John JamesDirectorOption exercise1,404—Form 4
Aug 15, 2025Ladiwala Shiraz ShabanaliDirectorOption exercise1,949—Form 4
Jun 21, 2025Owens Gary MPresident and CEOTax withholding1,445$138.46KForm 4
Jun 21, 2025Owens Gary MPresident and CEOOption exercise3,301$316.30KForm 4
Jun 21, 2025Sakys JohnCFOTax withholding454$43.50KForm 4
Jun 21, 2025Sakys JohnCFOOption exercise1,036$99.27KForm 4
Jun 21, 2025Archbold Brian DavidSVP OperationsTax withholding385$36.89KForm 4
Jun 21, 2025Archbold Brian DavidSVP OperationsOption exercise844$80.87KForm 4

Transaction codes follow SEC Form 4: P = open-market purchase, S = open-market sale, A = grant or award, M = option exercise, F = shares withheld for taxes. About Form 4

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