John James Sullivan - 15 Aug 2025 Form 4 Insider Report for MESA LABORATORIES INC /CO/ (MLAB)

Role
Director
Signature
John Sakys under Power of Attorney by John Sullivan
Issuer symbol
MLAB
Transactions as of
15 Aug 2025
Net transactions value
$0
Form type
4
Filing time
18 Aug 2025, 14:20:16 UTC
Previous filing
25 Nov 2024
Next filing
05 Dec 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Sullivan John James Director 12100 W. 6TH AVENUE, LAKEWOOD John Sakys under Power of Attorney by John Sullivan 15 Aug 2025 0001305784

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MLAB Common Stock Options Exercise $0 +1,404 +5.4% $0.000000 27,282 15 Aug 2025 Direct
holding MLAB Common Stock 44,780 15 Aug 2025 By Trust F5

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 - 9 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 - 10 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
F5 Represents shares held in a spousal lifetime access trust