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  • Insider Ownership

Insider Trading & Ownership of John James Sullivan

Location
Lakewood, CO
Summary
The estimated net worth of John James Sullivan is at least $5,737,069 dollars as of 05 Dec 2025. John James Sullivan is the Director of MESA LABORATORIES INC /CO/ and owns shares of MESA LABORATORIES INC /CO/ (MLAB) stock worth about $5.74M.
Signature
John Sakys under Power of Attorney by John Sullivan
All Insider Reports
All Insider Reports

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Quick Takeaways

  • John James Sullivan has 1 issuer position tracked on this page.
  • Estimated disclosed ownership value: $5,737,069.
  • Recent insider filing activity is available below.

What Changed

  • Largest disclosed position: MESA LABORATORIES INC /CO/ ($5,737,069).
  • Past-year value change for that position: .

Why This Matters

  • This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
  • You can cross-check role, issuer, and filing chronology directly against the SEC source.

Official SEC Source

Filed on Form 4

Insider ownership context is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Ownership of John James Sullivan

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
MLAB MESA LABORATORIES INC /CO/ Director $5,737,069 02 Dec 2025

Insider Transactions Reported by John James Sullivan:

Sym Company Class Transaction % Value $ * Price $ Shares Shares After Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

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