Jennifer Alltoft - Aug 15, 2025 Form 4 Insider Report for MESA LABORATORIES INC /CO/ (MLAB)

Role
Director
Signature
John Sakys under Power of Attorney by Jennifer Alltoft
Stock symbol
MLAB
Transactions as of
Aug 15, 2025
Transactions value $
$0
Form type
4
Date filed
8/18/2025, 01:34 PM
Previous filing
Sep 6, 2024
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Alltoft Jennifer Sadie Director 12100 W. 6TH AVENUE, LAKEWOOD John Sakys under Power of Attorney by Jennifer Alltoft 2025-08-18 0001769053

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MLAB Common Stock Options Exercise $0 +1.4K +40.41% $0.00 4.88K Aug 15, 2025 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction MLAB Restricted Stock Units - 8 Options Exercise $0 -1.4K -100% $0.00 0 Aug 15, 2025 Common Stock 1.4K Direct F1, F2, F3
transaction MLAB Restricted Stock Units - 9 Award $0 +2.78K $0.00 2.78K Aug 15, 2025 Common Stock 2.78K Direct F1, F3, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each RSU represents a contingent right to receive one share of the Issuer's common stock
F2 RSUs that vested on August 15, 2025
F3 Not Applicable
F4 RSUs that vest on August 15, 2026