SEC Form 4 · accession 0000724004-26-000085
MESA LABORATORIES INC /CO/ · MLAB
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
John James Sullivan
Director
Period of report
Aug 13, 2026
Accepted (ET)
Aug 17, 2026 · 12:18 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0000724004
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Aug 13, 2026 | S | 7,093 | $112.80 | D | 17,834 | D | |
| Common StockF1,F2 | holding | — | — | — | 45,110 | I | By Trust |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1Represents shares sold directly in a private transaction to Siddhartha Kadia, Mesa President and CEO
- F2Represents shares held by the "Sullivan Family Trust" for which the reporting person's spouse serves as trustee. The reporting person disclaims beneficial ownership of the securities held by the trust except to the extent of his pecuniary interest therein.