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SEC Form 4 research

MESA LABORATORIES INC /CO/ insider transactions

Inspect MESA LABORATORIES INC /CO/'s public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-14T07:26:40.310Z

Issuer CIK
0000724004
Reporting owners
26
Officers and directors
16
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

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2026-09-112026-09-09Capone Mark ChristopherA2,423$0Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-09 and its public availability date is 2026-09-11. Subtracting those calendar dates gives 2 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC accession 0000724004-26-000097 ↗SEC accession 0000724004-26-000096 ↗SEC accession 0000724004-26-000095 ↗

Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Show the table · 9 rows, 7 columns

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2026-09-112026-09-09Capone Mark ChristopherA2,423$0Not reported
2026-09-112026-09-09Ladiwala Shiraz ShabanaliA2,510$0Not reported
2026-09-112009-09-09Alltoft Jennifer SadieA1,774$0Not reported
2026-09-112026-09-09Hall ShannonA1,774$0Not reported
2026-09-112026-09-09Sullivan John JamesA1,774$0Not reported
2026-09-112026-09-09Tripeny R TonyA1,774$0Not reported
2026-08-182026-08-13Sullivan John JamesS7,093$112.8Not reported
2026-08-182026-08-13Kadia SiddharthaP7,093$112.8Not reported
2026-08-182026-08-13Tripeny R TonyP900$113.69Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 22 displayed rows: Officers and directors in the directory

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Archbold Brian David000177694717
DINOIA GREGORY000128558110
Owens Gary M000170067112
Hall Shannon000162122211
Capone Mark Christopher000135241342
Tripeny R Tony000133938125
Adriance Glenn E000143153511
BROOKS MICHAEL T00012602884
CAMPBELL H STUART000125760322
Crennen Lyndsey Elizabeth00021406652
DUKE PAUL D000124014710
Dwyer Robert V000136077827
GUILLEMIN EVAN000124629523
Kadia Siddhartha00015736661
KELLY DAVID M000119176830
Ladiwala Shiraz Shabanali00017155731
PETERSON STEVEN W00012602869
Sakys John000119771034
Schmieder John Bradley000163785217
SCHMIEDER LUKE R00012289242
SEG Ventures, LLC00014574914
Sullivan John James000130578437
Archbold Brian David ↗DINOIA GREGORY ↗Owens Gary M ↗Hall Shannon ↗Capone Mark Christopher ↗Tripeny R Tony ↗Adriance Glenn E ↗BROOKS MICHAEL T ↗CAMPBELL H STUART ↗Crennen Lyndsey Elizabeth ↗DUKE PAUL D ↗Dwyer Robert V ↗GUILLEMIN EVAN ↗Kadia Siddhartha ↗KELLY DAVID M ↗Ladiwala Shiraz Shabanali ↗PETERSON STEVEN W ↗Sakys John ↗Schmieder John Bradley ↗SCHMIEDER LUKE R ↗SEG Ventures, LLC ↗Sullivan John James ↗

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.