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BCS

Notice of Proposed Sale · 144

Mesa Laboratories, Inc.

MLABNASDAQEQUITYCurrent

Notice of Proposed Sale

Filed Aug 21, 2026Accepted Aug 21, 2026, 3:53 PM EDTFiling CIK 724004Accession 0001959173-26-006337
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Structured filing — 144

primary_doc.xml

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Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.

Proposed-sale notice

Issuer
MESA LABORATORIES INC /CO/
Issuer CIK
0000724004
SEC file number
000-11740
Phone
3039878000
Person for whose account securities are to be sold
Owens Gary M
Relationships to issuer
Former Officer
Street
12100 W 6TH AVE
City
LAKEWOOD
State / country code
CO
Postal code
80228

Securities proposed for sale

Securities proposed for sale · 1 reported row
SecurityProposed unitsAggregate market valueUnits outstandingApproximate sale dateExchangeBroker / market maker
Common20,0002,450,059.205,595,86908/21/2026NASDAQFidelity Brokerage Services LLC

Broker / market maker — proposed row 1, entry 1

Name
Fidelity Brokerage Services LLC
Street
900 Salem Street
City
Smithfield
State / country code
RI
Postal code
02917

Acquisition of securities to be sold

Acquisition of securities to be sold · 8 reported rows
SecurityAcquiredNature of acquisitionAcquired fromAmount acquiredGift transactionPayment dateNature of payment
Common04/18/2018Restricted Stock VestingIssuer1,000N04/18/2018Compensation
Common09/01/2022Restricted Stock VestingIssuer4,025N09/01/2022Compensation
Common06/16/2023Restricted Stock VestingIssuer629N06/16/2023Compensation
Common06/15/2024Restricted Stock VestingIssuer1,778N06/15/2024Compensation
Common10/25/2024Restricted Stock VestingIssuer3,262N10/25/2024Compensation
Common10/28/2024Restricted Stock VestingIssuer3,228N10/28/2024Compensation
Common06/15/2025Restricted Stock VestingIssuer1,181N06/15/2025Compensation
Common06/18/2025Restricted Stock VestingIssuer4,897N06/18/2025Compensation

Sales reported in the preceding three months

Sales reported in the preceding three months · 1 reported row
SellerSecuritySale dateAmount soldGross proceeds
Gary M. OwensCommon06/16/20263,706375,295.50

Seller — prior-sale row 1, entry 1

Name
Gary M. Owens
Street
12100 West Sixth Avenue
City
Lakewood
State / country code
CO
Postal code
80228

Prior-sale reporting

Nothing to report for the preceding three months
N

Notice signature

Notice date
08/21/2026
Signed
/s/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Gary M. Owens

Company context

Current securities

Recent company filings

  1. Costs Associated with Exit or Disposal Activities · Regulation FD DisclosureOct 13, 2026
  2. Submission of Matters to a Vote of Security HoldersSep 8, 2026
  3. 144 filingAug 27, 2026
  4. 10-Q filingAug 10, 2026
  5. Results of Operations and Financial ConditionAug 10, 2026

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