MLAB

Mesa Laboratories, Inc.$126.55-2.80 (-2.17%)

Prev Close$129.09·MCap$712.6M·P/E105.45·Vol109.1K·Yield0.01%

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Buys (12M)

$1.35M

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Sells (12M)

$1.57M

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Net Activity

Net Seller

$215.7K

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Active Insiders

last 12 mo

Over the past 12 months, insider activity at Mesa Laboratories, Inc. (MLAB) has been mixed between buying and selling, with 5 insider purchases totaling $1.35M and 7 insider sales totaling $1.57M. The most recent insider transaction was by Kadia Siddhartha (officer: President and CEO), who purchased $800.1K worth of shares on Aug 17, 2026. Mesa Laboratories, Inc. operates in the Healthcare sector, within the Medical - Specialties industry, with a market cap of $712.6M.

MLAB Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Aug 17, 2026	Kadia Siddhartha	officer: President and CEO	Buy	7,093	$112.80	$800.1K	7,093
Aug 17, 2026	Sullivan John James	director	Sell	7,093	$112.80	$800.1K	17,834-28%
Aug 17, 2026	Tripeny R Tony	director	Buy	900	$113.69	$102.3K	6,298
Jun 23, 2026	Archbold Brian David	officer: SVP Operations	Sell	2,516	$89.50	$225.2K	6,377-28%
Jun 23, 2026	Crennen Lyndsey Elizabeth	officer: CAO	Sell	442	$89.50	$39.6K	2,020
Jun 23, 2026	Sakys John	officer: CFO	Sell	2,827	$89.50	$253.0K	19,785
Jun 17, 2026	Sakys John	officer: CFO	Sell	1,223	$101.27	$123.8K	16,538
Jun 17, 2026	Archbold Brian David	officer: SVP Operations	Sell	1,151	$101.27	$116.6K	3,710
Jun 17, 2026	Crennen Lyndsey Elizabeth	officer: CAO	Sell	118	$101.27	$11.9K	1,473
Mar 10, 2026	Capone Mark Christopher	director	Buy	1,301	$76.35	$99.3K	3,429+61%
Mar 10, 2026	Ladiwala Shiraz Shabanali	director	Buy	3,500	$72.23	$252.8K	8,523+70%
Mar 10, 2026	Tripeny R Tony	director	Buy	1,315	$76.00	$99.9K	5,398+32%
Jun 21, 2025	Archbold Brian David	SVP Operations	Sell	385	$95.82	$36.9K	0
Jun 21, 2025	Sakys John	CFO	Sell	454	$95.82	$43.5K	0
Jun 20, 2025	Owens Gary M	President and CEO	Sell	1,445	$95.82	$138.5K	0
Jun 18, 2025	Archbold Brian David	SVP Operations	Sell	1,166	$92.99	$108.4K	0
Jun 18, 2025	Owens Gary M	President and CEO	Sell	3,810	$92.99	$354.3K	0
Jun 18, 2025	Sakys John	CFO	Sell	1,243	$92.99	$115.6K	0
Jun 15, 2025	Archbold Brian David	SVP Operations	Sell	472	$97.12	$45.8K	0
Jun 15, 2025	Owens Gary M	President and CEO	Sell	1,939	$97.12	$188.3K	0
Jun 15, 2025	Sakys John	CFO	Sell	642	$97.12	$62.3K	0
Mar 19, 2025	Owens Gary M	President and CEO	Sell	21,000	$123.91	$2.60M	0

MLAB Insider Buying Activity

The following table shows recent insider purchases of Mesa Laboratories, Inc. (MLAB) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Aug 17, 2026	Kadia Siddhartha	officer: President and CEO	Buy	7,093	$112.80	$800.1K	7,093
Aug 17, 2026	Tripeny R Tony	director	Buy	900	$113.69	$102.3K	6,298
Mar 10, 2026	Capone Mark Christopher	director	Buy	1,301	$76.35	$99.3K	3,429+61%
Mar 10, 2026	Ladiwala Shiraz Shabanali	director	Buy	3,500	$72.23	$252.8K	8,523+70%
Mar 10, 2026	Tripeny R Tony	director	Buy	1,315	$76.00	$99.9K	5,398+32%

MLAB Insider Selling Activity

The following table shows recent insider sales of Mesa Laboratories, Inc. (MLAB) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Aug 17, 2026	Sullivan John James	director	Sell	7,093	$112.80	$800.1K	17,834-28%
Jun 23, 2026	Archbold Brian David	officer: SVP Operations	Sell	2,516	$89.50	$225.2K	6,377-28%
Jun 23, 2026	Crennen Lyndsey Elizabeth	officer: CAO	Sell	442	$89.50	$39.6K	2,020
Jun 23, 2026	Sakys John	officer: CFO	Sell	2,827	$89.50	$253.0K	19,785
Jun 17, 2026	Sakys John	officer: CFO	Sell	1,223	$101.27	$123.8K	16,538
Jun 17, 2026	Archbold Brian David	officer: SVP Operations	Sell	1,151	$101.27	$116.6K	3,710
Jun 17, 2026	Crennen Lyndsey Elizabeth	officer: CAO	Sell	118	$101.27	$11.9K	1,473
Jun 21, 2025	Archbold Brian David	SVP Operations	Sell	385	$95.82	$36.9K	0
Jun 21, 2025	Sakys John	CFO	Sell	454	$95.82	$43.5K	0
Jun 20, 2025	Owens Gary M	President and CEO	Sell	1,445	$95.82	$138.5K	0
Jun 18, 2025	Archbold Brian David	SVP Operations	Sell	1,166	$92.99	$108.4K	0
Jun 18, 2025	Owens Gary M	President and CEO	Sell	3,810	$92.99	$354.3K	0
Jun 18, 2025	Sakys John	CFO	Sell	1,243	$92.99	$115.6K	0
Jun 15, 2025	Archbold Brian David	SVP Operations	Sell	472	$97.12	$45.8K	0
Jun 15, 2025	Owens Gary M	President and CEO	Sell	1,939	$97.12	$188.3K	0
Jun 15, 2025	Sakys John	CFO	Sell	642	$97.12	$62.3K	0
Mar 19, 2025	Owens Gary M	President and CEO	Sell	21,000	$123.91	$2.60M	0