Shannon Hall - 15 Aug 2025 Form 4 Insider Report for MESA LABORATORIES INC /CO/ (MLAB)

Role
Director
Signature
John Sakys under Power of Attorney by Shannon Hall
Issuer symbol
MLAB
Transactions as of
15 Aug 2025
Net transactions value
$0
Form type
4
Filing time
18 Aug 2025, 14:02:38 UTC
Previous filing
06 Sep 2024
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Hall Shannon Director 123 CLEARFIELD DRIVE, SAN FRANCISCO John Sakys under Power of Attorney by Shannon Hall 18 Aug 2025 0001621222

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MLAB Common Stock Options Exercise $0 +1,404 +50% $0.000000 4,189 15 Aug 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 - 7 Options Exercise $0 -1,404 -100% $0.000000 0 15 Aug 2025 Common Stock 1,404 Direct F1, F2, F3
transaction MLAB Restricted Stock Units - 8 Award $0 +2,784 $0.000000 2,784 15 Aug 2025 Common Stock 2,784 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