| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Sakys John | CFO | MESA LABORATORIES, INC., 12100 W. 6TH AVENUE, LAKEWOOD | John Sakys | 11 Jun 2025 | 0001197710 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MLAB | Non Qualified Stock Options | Expiration of short derivative position | $0 | -4,087 | -17% | $0.000000 | 19,706 | 10 Jun 2025 | Common Stock | 4,087 | $203.54 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | NSOs that vested 1/4 on each anniversary date of the June 10, 2019 grant date |
| F2 | NSOs that expired unexercised on June 10, 2025 |