SEC Form 4 · accession 0000724004-26-000090
MESA LABORATORIES INC /CO/ · MLAB
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Jennifer Sadie Alltoft
Director
Period of report
Aug 15, 2026
Accepted (ET)
Aug 17, 2026 · 7:32 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 15, 2026 | M | 2,784 | $0.00 | A | 7,662 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Stock Units - 9F1,F2,F3 | — | Aug 15, 2026 | M | 2,784 | D | — | — | Common Stock | 2,784 | 0 | D |
Explanation of responses
- F1Each RSU represents a contingent right to receive one share of the Issuer's common stock
- F2RSUs that vested on August 15, 2026
- F3Not Applicable