Mesa Laboratories Inc /co/ (MLAB) insider trading
Every open-market stock purchase and sale by Mesa Laboratories Inc /co/ executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Siddhartha Kadia (CEO) and 1 other bought $902K in the last 90 days.
- John James Sullivan (Director) sold $800K in the last 90 days.
Last 12 months: insiders bought $1.4M (5 buys) and sold $1.6M (7 sales). Last close $120.87 on Sep 11, 2026.
Recent MLAB insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 9, 2026 | Shiraz Shabanali Ladiwala (Director) | Bought (not open market) | — |
| Sep 9, 2026 | R Tony Tripeny (Director) | Bought (not open market) | — |
| Sep 9, 2026 | John James Sullivan (Director) | Bought (not open market) | — |
| Sep 9, 2026 | Shannon Hall (Director) | Bought (not open market) | — |
| Sep 9, 2026 | Mark Christopher Capone (Director) | Bought (not open market) | — |
| Aug 15, 2026 | R Tony Tripeny (Director) | Bought (not open market) | — |
| Aug 15, 2026 | Shannon Hall (Director) | Bought (not open market) | — |
| Aug 15, 2026 | Jennifer Sadie Alltoft (Director) | Bought (not open market) | — |
| Aug 15, 2026 | John James Sullivan (Director) | Bought (not open market) | — |
| Aug 15, 2026 | Mark Christopher Capone (Director) | Bought (not open market) | — |
| Aug 15, 2026 | Shiraz Shabanali Ladiwala (Director) | Bought (not open market) | — |
| Aug 13, 2026 | Siddhartha Kadia (CEO) | Bought | $800K |
| Aug 13, 2026 | John James Sullivan (Director) | Sold | $800K |
| Aug 13, 2026 | R Tony Tripeny (Director) | Bought | $102K |
| Jun 22, 2026 | John Sakys (CFO) | Sold | $253K |
| Jun 22, 2026 | Brian David Archbold (VP) | Sold | $225K |
| Jun 22, 2026 | Lyndsey Elizabeth Crennen (C-suite exec) | Sold | $39.6K |
| Jun 18, 2026 | John Sakys (CFO) | Bought (not open market) | $217K |
| Jun 18, 2026 | Brian David Archbold (VP) | Bought (not open market) | $177K |
| Jun 18, 2026 | Lyndsey Elizabeth Crennen (C-suite exec) | Bought (not open market) | $25K |
| Jun 18, 2026 | John Sakys (CFO) | Bought (not open market) | — |
| Jun 18, 2026 | Brian David Archbold (VP) | Bought (not open market) | — |
| Jun 18, 2026 | Lyndsey Elizabeth Crennen (C-suite exec) | Bought (not open market) | — |
| Jun 18, 2026 | Lyndsey Elizabeth Crennen (C-suite exec) | Bought (not open market) | — |
| Jun 18, 2026 | John Sakys (CFO) | Bought (not open market) | — |
Who's trading MLAB
- Shiraz Shabanali Ladiwala, Director: bought $253K (1 buy), last Sep 9, 2026
- R Tony Tripeny, Director: bought $202K (2 buys), last Sep 9, 2026
- Mark Christopher Capone, Director: bought $99.3K (1 buy), last Sep 9, 2026
- John James Sullivan, Director: sold $800K (1 sale), last Sep 9, 2026
- Shannon Hall, Director: other filings, last Sep 9, 2026
- Jennifer Sadie Alltoft, Director: other filings, last Aug 15, 2026
- Siddhartha Kadia, CEO: bought $800K (1 buy), last Aug 13, 2026
- John Sakys, CFO: sold $377K (2 sales), last Jun 22, 2026
- Lyndsey Elizabeth Crennen, C-suite exec: sold $51.5K (2 sales), last Jun 22, 2026
- Brian David Archbold, VP: sold $342K (2 sales), last Jun 22, 2026
- Gary M Owens, CEO: other filings, last Mar 31, 2026
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