Form 4 Tracker
MESA LABORATORIES INC /CO/
MLAB

29 insider filings · Latest: Sep 9, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Aug 27, 2026Aug 27 7:33 PMOwens Gary M
Proposed Sale
20,358$127.75$2.6M—

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Aug 21, 2026Aug 21 7:53 PMOwens Gary M
Proposed Sale
20,000$122.50$2.5M—

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Aug 13, 2026Aug 17 4:18 PMJohn James SullivanDirector
Sale
7,093$112.80$800.1K17,834(D)

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Aug 13, 2026Aug 17 3:49 PMSiddhartha KadiaPresident and CEO
Purchase
7,093$112.80$800.1K7,093(I)

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Aug 13, 2026Aug 17 3:27 PMTony R TripenyDirector
Purchase
900$113.69$102.3K6,298(D)

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Jun 22, 2026Jun 23 5:34 PMLyndsey Elizabeth CrennenCAO
Sale
442$89.50$39.6K2,020(D)

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Jun 22, 2026Jun 23 5:02 PMBrian David ArchboldSVP Operations
Sale
2,516$89.50$225.2K6,377(D)

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Jun 22, 2026Jun 23 4:23 PMJohn SakysCFO
Sale
2,827$89.50$253.0K19,785(D)

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Jun 22, 2026Jun 22 7:56 PMSakys John
Proposed Sale
2,827$89.50$253.0K—

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Jun 22, 2026Jun 22 7:51 PMArchbold Brian David
Proposed Sale
2,516$89.50$225.2K—

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Jun 16, 2026Jun 17 4:23 PMBrian David ArchboldSVP Operations
Sale
1,151$101.27$116.6K3,710(D)

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Jun 16, 2026Jun 17 4:19 PMLyndsey Elizabeth CrennenCAO
Sale
118$101.27$11.9K1,473(D)

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Jun 16, 2026Jun 17 4:09 PMJohn SakysCFO
Sale
1,223$101.27$123.8K16,538(D)

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Jun 16, 2026Jun 16 7:33 PMArchbold Brian David
Proposed Sale
1,151$101.27$116.6K—

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Jun 16, 2026Jun 16 7:31 PMSakys John
Proposed Sale
1,223$101.27$123.8K—

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Jun 16, 2026Jun 16 7:29 PMOwens Gary M
Proposed Sale
3,706$101.27$375.3K—

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Mar 10, 2026Mar 10 9:43 PMShiraz Shabanali LadiwalaDirector
Purchase
3,500$72.23$252.8K8,523(D)

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Mar 10, 2026Mar 10 7:46 PMMark Christopher CaponeDirector
Purchase
1,301$76.35$99.3K3,429(D)

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Mar 10, 2026Mar 10 7:39 PMTony R TripenyDirector
Purchase
1,315$76.00$99.9K5,398(D)

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Jun 16, 2025Jun 16 7:49 PMArchbold Brian David
Proposed Sale
472$97.12$45.8K—

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Jun 15, 2026Jun 16 6:15 PMJohn SakysCFO
E
3,951$226.7215,755(D)

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Apr 14, 2026May 19 1:04 PMSiddhartha KadiaPresident and CEO
Grant/Award
35,236—35,236(D)

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Apr 14, 2026Apr 24 2:49 PMSiddhartha KadiaPresident and CEO
Grant/Award
34,807—34,807(D)

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Mar 31, 2026Apr 2 8:29 PMGary M OwensPresident and CEO
Disposition
8,211—16,448(D)

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