Key facts
- This page summarizes Lyndsey Elizabeth Crennen's Form 4 filing for MESA LABORATORIES INC /CO/ (MLAB).
- 8 reported transactions and 3 derivative rows are listed below.
- Accepted by SEC: 23 Jun 2026, 13:34.
Lyndsey Elizabeth Crennen - 18 Jun 2026 Form 4 Insider Report for MESA LABORATORIES INC /CO/ (MLAB)
- Reporting relationship
- CAO
- Issuer ticker
- MLAB
- Reported as of
- 18 Jun 2026
- Net transaction value
- -$39,560
- SEC form
- 4
- Accepted by SEC
- 23 Jun 2026, 13:34:00 UTC
- Prior SEC filing
- 17 Jun 2026
- Source filing
- View source filing
- Reporting owner signature
- John Sakys under Power of Attorney by Lyndsey Crennen
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Lyndsey Elizabeth Crennen filed Form 4 for MESA LABORATORIES INC /CO/ (MLAB) on 23 Jun 2026.
Change
- Previous filing in this sequence was filed on 17 Jun 2026.
- Current net transaction value: -$39,560.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0002140665
Primary reporting owner
Crennen Lyndsey Elizabeth
- Relationship
- CAO
- Address
- 2850 S CLARKSON CIRCLE, ENGLEWOOD
- Signature
- John Sakys under Power of Attorney by Lyndsey Crennen
- Signature date
- 23 Jun 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
MLAB
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +125
- Change %
- +8.5%
- Price
- $95.10*
- Shares after
- 1,598
- Date
- 18 Jun 2026
- Ownership
- Direct
MLAB
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +233
- Change %
- +15%
- Price
- $95.10*
- Shares after
- 1,831
- Date
- 18 Jun 2026
- Ownership
- Direct
MLAB
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +368
- Change %
- +20%
- Price
- $95.10*
- Shares after
- 2,199
- Date
- 18 Jun 2026
- Ownership
- Direct
MLAB
transaction
Common Stock
Award
- Transaction value
- Shares
- +263
- Change %
- +12%
- Price
- $95.10*
- Shares after
- 2,462
- Date
- 18 Jun 2026
- Ownership
- Direct
- Footnotes
- F6
MLAB
transaction
Common Stock
Sale
- Transaction value
- $39,560
- Shares
- -442
- Change %
- -18%
- Price
- $89.50
- Shares after
- 2,020
- Date
- 22 Jun 2026
- Ownership
- Direct
- Footnotes
- F7
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
MLAB
transaction
Derivative
Restricted Stock Unit - 1
Options Exercise
- Transaction value
- Shares
- -125
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 18 Jun 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 125
- Exercise price
- Footnotes
- F1, F2, F3
MLAB
transaction
Derivative
Restricted Stock Units - 2
Options Exercise
- Transaction value
- Shares
- -233
- Change %
- -50%
- Price
- $0.000000*
- Shares after
- 232
- Date
- 18 Jun 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 233
- Exercise price
- Footnotes
- F1, F3, F4
MLAB
transaction
Derivative
Restricted Stock Units - 3
Options Exercise
- Transaction value
- Shares
- -368
- Change %
- -50%
- Price
- $0.000000*
- Shares after
- 367
- Date
- 18 Jun 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 368
- Exercise price
- Footnotes
- F1, F3, F5
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 7 footnotes
Footnote F1
Each RSU represents a contingent right to receive one share of the Issuer's common stock
Footnote F2
RSUs that vested 1/3 on June 21, 2024 and each of the next two anniversary dates
Footnote F3
Not Applicable
Footnote F4
RSUs that vest 1/3 on June 18, 2025 and each of the next two anniversary dates
Footnote F5
RSUs that vest 1/3 on June 19, 2025 and each of the next 2 anniversary dates
Footnote F6
Shares represent common stock of Mesa Labs issued upon release of performance share units issued under the FY24-FY26 performance share unit program
Footnote F7
Shares sold to cover taxes related to the vesting of RSUs and PSUs on June 18, 2026. Transaction was executed under a 10b-1 plan.