Mesa Laboratories Insider Trades

MLAB

Track insider trading activity from Mesa Laboratories executives and directors. See which insiders are buying and selling MLAB stock.

Trades Last 12 Months

MLAB Price

All Insider Trades for Mesa Laboratories

Sort by: Latest Trade Biggest Holding
Insider
Holding Value
Last Transaction
Sale/Purchase
Amount
Price
Current Price
Archbold Brian David SVP Operations
Holding Value $350k 3,710 shares
Last Trade
Jun 16, 2026 Sale (Open Market)Shares sold on the open market or in a private sale.
$117k 1,151 shares
$101.27
$94.45
Holding Value $1.56M 16,538 shares
Last Trade
Jun 16, 2026 Sale (Open Market)Shares sold on the open market or in a private sale.
$124k 1,223 shares
$101.27
$94.45
Kadia Siddhartha President And CEO
Holding Value $3.29M 34,807 shares
Last Trade
Apr 14, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$3.44M 34,807 shares
$98.97
$94.45
Owens Gary M President And CEO
Holding Value $1.55M 16,448 shares
Last Trade
Mar 31, 2026 Sale (Sale to Issuer)Shares sold back to the company, such as a repurchase or tender.
$726k 8,211 shares
$88.42
$94.45
Holding Value $805k 8,523 shares
Last Trade
Mar 10, 2026 Purchase (Open Market)Shares bought on the open market or in a private purchase outside of a company compensation plan.
$253k 3,500 shares
$72.23
$94.45
Tripeny R Tony Director
Holding Value $510k 5,398 shares
Last Trade
Mar 10, 2026 Purchase (Open Market)Shares bought on the open market or in a private purchase outside of a company compensation plan.
$99.9k 1,315 shares
$76.00
$94.45
Holding Value $324k 3,429 shares
Last Trade
Mar 10, 2026 Purchase (Open Market)Shares bought on the open market or in a private purchase outside of a company compensation plan.
$99.3k 1,301 shares
$76.35
$94.45
Holding Value $2.39M 25,282 shares
Last Trade
Dec 02, 2025 Sale (Gift)Shares transferred as a gift rather than bought or sold for cash.
$152k 2,000 shares
$76.06
$94.45
Hall Shannon Director
Holding Value $0 0 shares
Last Trade
Aug 15, 2025 Sale (Option Exercise)Shares acquired or sold by exercising stock options or converting another derivative security.
$96.7k 1,404 shares
$68.87
$94.45
Holding Value $461k 4,878 shares
Last Trade
Aug 15, 2025 Purchase (Option Exercise)Shares acquired or sold by exercising stock options or converting another derivative security.
$96.7k 1,404 shares
$68.87
$94.45
Holding Value $5.93M 62,760 shares
Last Trade
Sep 15, 2023 Sale (Open Market)Shares sold on the open market or in a private sale.
$124k 1,000 shares
$123.74
$94.45
Guillemin Evan Director
Holding Value $2.76M 29,207 shares
Last Trade
Sep 01, 2022 Purchase (Option Exercise)Shares acquired or sold by exercising stock options or converting another derivative security.
$76.9k 431 shares
$178.42
$94.45
Dinoia Gregory SVP Commercial
Holding Value $275k 2,911 shares
Last Trade
Jun 17, 2022 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$32.1k 173 shares
$185.57
$94.45
Kelly David M Director
Holding Value $53.7k 569 shares
Last Trade
Nov 08, 2021 Sale (In The Money)Reported as In The Money on SEC Form 4.
$5.83k 18 shares
$323.77
$94.45
Holding Value $20.9k 221 shares
Last Trade
Jun 15, 2020 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$50.1k 221 shares
$226.72
$94.45
Dwyer Robert V Director
Holding Value $3.45M 36,564 shares
Last Trade
Apr 03, 2020 Purchase (Option Exercise)Shares acquired or sold by exercising stock options or converting another derivative security.
$181k 868 shares
$209.03
$94.45
Brooks Michael T Director
Holding Value $3.09M 32,730 shares
Last Trade
Jun 13, 2019 Sale (Gift)Shares transferred as a gift rather than bought or sold for cash.
$12.8k 60 shares
$212.84
$94.45
Holding Value $3.94M 41,677 shares
Last Trade
Nov 07, 2018 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$29.5k 150 shares
$196.99
$94.45
Holding Value $0 0 shares
Last Trade
Sep 20, 2018 Sale (Other)Another type of insider transaction reported on SEC Form 4.
$31M 171,155 shares
$181.02
$94.45
Holding Value $1.97M 20,838 shares
Last Trade
Mar 26, 2018 Sale (Expire Short)Reported as Expire Short on SEC Form 4.
$457k 3,300 shares
$138.34
$94.45

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