MESA LABORATORIES INC /CO/ (MLAB)
Data as of , from SEC Form 4 filings.
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- John James Sullivan - DirectorOpen-market sale$800K
Siddhartha Kadia - OfficerOpen-market purchase$800K
About MESA LABORATORIES INC /CO/ (MLAB)
Mesa Laboratories Inc manufactures life sciences tools and critical quality control solutions. It operates in four divisions: i) Sterilization and Disinfection Control, which manufactures and sells biological, chemical, and cleaning indicators used to assess the effectiveness of sterilization, decontamination, disinfection, and cleaning processes. ii) Clinical Genomics division develops, manufactures, and sells sensitive, low-cost, high-throughput genetic analysis tools and related consumables. iii) The Biopharmaceutical Development division develops, manufactures, and sells automated systems for protein analysis (immunoassays) and peptide synthesis solutions. iv) The Calibration Solutions division develops, manufactures, sells, and services quality control products.
- LAKEWOOD, CO
- 717
- 1984
- XNAS
MLAB Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market purchase | 2 | 7,993 | $902K |
| Open-market sale | 1 | 7,093 | $800K |
| Grant or award | 6 | 12,029 | |
MLAB insider transactions (Form 4)
5941 Form 4 filings on record, the earliest from Oct 29, 2024, newest first. Filing history page 1 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Mark Christopher Capone - Director | Grant or award | Restricted Stock Units - 4 | 2,423 | $0.00 | - | |
| Shiraz Shabanali Ladiwala - Director | Grant or award | Restricted Stock Units - 7 | 2,510 | $0.00 | - | |
| Jennifer Sadie Alltoft - Director | Grant or award | Restricted Stock Units - 10 | 1,774 | $0.00 | - | |
| Shannon Hall - Director | Grant or award | Restricted Stock Units - 9 | 1,774 | $0.00 | - | |
| John James Sullivan - Director | Grant or award | Restricted Stock Units - 11 | 1,774 | $0.00 | - | |
| R. Tony Tripeny - Director | Grant or award | Restricted Stock Units - 5 | 1,774 | $0.00 | - | |
| Mark Christopher Capone - Director | Option exercise | Common Stock | 2,784 | $0.00 | - | |
| Mark Christopher Capone - Director | Option exercise | Restricted Stock Units - 3 | 2,784 | $0.00 | - | |
| Jennifer Sadie Alltoft - Director | Option exercise | Common Stock | 2,784 | $0.00 | - | |
| Jennifer Sadie Alltoft - Director | Option exercise | Restricted Stock Units - 9 | 2,784 | $0.00 | - | |
| Shiraz Shabanali Ladiwala - Director | Option exercise | Common Stock | 3,810 | $0.00 | - | |
| Shiraz Shabanali Ladiwala - Director | Option exercise | Restricted Stock Units - 6 | 3,810 | $0.00 | - | |
| Shannon Hall - Director | Option exercise | Common Stock | 2,784 | $0.00 | - | |
| Shannon Hall - Director | Option exercise | Restricted Stock Units - 8 | 2,784 | $0.00 | - | |
| John James Sullivan - Director | Open-market sale | Common Stock | 7,093 | $112.80 | $800K | |
| Siddhartha Kadia - Officer | Open-market purchase | Common Stock | 7,093 | $112.80 | $800K | |
| R. Tony Tripeny - Director | Open-market purchase | Common Stock | 900 | $113.69 | $102K | |
 Lyndsey Elizabeth Crennen - Officer | Option exercise | Restricted Stock Units - 3 | 368 | $0.00 | - | |
| Lyndsey Elizabeth Crennen - Officer | Option exercise | Common Stock | 125 | $95.10 | $12K | |
| Lyndsey Elizabeth Crennen - Officer | Option exercise | Common Stock | 233 | $95.10 | $22K | |
| Lyndsey Elizabeth Crennen - Officer | Option exercise | Common Stock | 368 | $95.10 | $35K | |
| Lyndsey Elizabeth Crennen - Officer | Grant or award | Common Stock | 263 footnote F6 | $95.10 | $25K | |
| Lyndsey Elizabeth Crennen - Officer | Open-market sale | Common Stock | 442 footnote F7 | $89.50 | $40K | |
| Lyndsey Elizabeth Crennen - Officer | Option exercise | Restricted Stock Unit - 1 | 125 | $0.00 | - | |
| Lyndsey Elizabeth Crennen - Officer | Option exercise | Restricted Stock Units - 2 | 233 | $0.00 | - | |
| ||||||
| Brian David Archbold - Officer | Option exercise | Restricted Stock Units - 7 | 844 | $0.00 | - | |
| Brian David Archbold - Officer | Option exercise | Restricted Stock Units - 8 | 2,480 | $0.00 | - | |
| Brian David Archbold - Officer | Option exercise | Common Stock | 844 | $95.10 | $80K | |
| Brian David Archbold - Officer | Option exercise | Common Stock | 2,480 | $95.10 | $236K | |
| Brian David Archbold - Officer | Open-market sale | Common Stock | 2,516 | $89.50 | $225K | |
| Brian David Archbold - Officer | Grant or award | Common Stock | 1,859 footnote F5 | $95.10 | $177K | |
| ||||||
| John Sakys - Officer | Option exercise | Restricted Stock Units - 6 | 1,036 | $0.00 | - | |
| John Sakys - Officer | Option exercise | Restricted Stock Units - 7 | 2,756 | $0.00 | - | |
| John Sakys - Officer | Option exercise | Common Stock | 1,036 | $95.10 | $99K | |
| John Sakys - Officer | Option exercise | Common Stock | 2,756 | $95.10 | $262K | |
| John Sakys - Officer | Grant or award | Common Stock | 2,282 footnote F5 | $95.10 | $217K | |
| John Sakys - Officer | Open-market sale | Common Stock | 2,827 footnote F6 | $89.50 | $253K | |
| ||||||
| Brian David Archbold - Officer | Open-market sale | Common Stock | 1,151 | $101.27 | $117K | |
| Lyndsey Elizabeth Crennen - Officer | Open-market sale | Common Stock | 118 footnote F1 | $101.27 | $12K | |
| ||||||
| John Sakys - Officer | Open-market sale | Common Stock | 1,223 footnote F1 | $101.27 | $124K | |
| ||||||
| Brian David Archbold - Officer | Option exercise | Restricted Stock Units - 9 | 2,454 | $0.00 | - | |
| Brian David Archbold - Officer | Grant or award | Restricted Stock Units - 10 | 4,328 | $0.00 | - | |
| Brian David Archbold - Officer | Option exercise | Common Stock | 2,454 | $104.08 | $255K | |
| Brian David Archbold - Officer | Other | Non Qualified Stock Options | 1,780 | $0.00 | - | |
| John Sakys - Officer | Option exercise | Restricted Stock Units 8 | 2,717 | $0.00 | - | |
| John Sakys - Officer | Grant or award | Restricted Stock Units - 9 | 8,416 | $0.00 | - | |
| John Sakys - Officer | Option exercise | Common Stock | 2,717 | $104.08 | $283K | |
| John Sakys - Officer | Other | Non Qualified Stock Option | 3,951 | $0.00 | - | |
| Siddhartha Kadia - Officer | Grant or award | Restricted Stock Units - 1 | 35,236 | $0.00 | - | |
| Siddhartha Kadia - Officer | Grant or award | Restricted Stock Units - 1 | 34,807 | $0.00 | - | |
| Gary M. Owens - Officer | Derivative | Restricted Stock Unit - 10 | 8,211 | $0.00 | - | |
| Shiraz Shabanali Ladiwala - Director | Open-market purchase | Common Stock | 3,500 | $72.23 | $253K | |
| Mark Christopher Capone - Director | Open-market purchase | Common Stock | 1,301 | $76.35 | $99K | |
| R. Tony Tripeny - Director | Open-market purchase | Common Stock | 1,315 | $76.00 | $100K | |
| John James Sullivan - Director | Gift | Common Stock | 2,000 | $0.00 | - | |
| Gary M. Owens - Officer | Option exercise | Common Stock | 11,558 footnote F1 | $0.00 | - | |
| ||||||
| Shiraz Shabanali Ladiwala - Director | Option exercise | Common Stock | 1,949 | $0.00 | - | |
| Shiraz Shabanali Ladiwala - Director | Option exercise | Restricted Stock Units - 5 | 1,949 | $0.00 | - | |
| Shiraz Shabanali Ladiwala - Director | Grant or award | Restricted Stock Units - 6 | 3,810 | $0.00 | - | |
Item 2.05, 7.01, 9.01
Item 5.07
Item 2.02, 9.01
Item 5.05, 9.01
Recent MLAB Form 144 notices of proposed sale
3An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| Owens Gary M | Former Officer | 20,358 | $2.60M | View on EDGAR | |
| Owens Gary M | Former Officer | 20,000 |
MLAB insider trading FAQ
What is the latest insider trade for MLAB?
MESA LABORATORIES INC /CO/ (MLAB) had 13 insider filings in the last 90 days, with the most recent on 2026-09-11. The full record for MLAB runs to 41 Form 4 filings, the earliest from 2024-10-29. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying MLAB stock?
2 insider purchases of MLAB were filed in the last 90 days, totaling $902K.
How many insiders are selling MLAB stock?
1 insider sale of MLAB was filed in the last 90 days, totaling $800K.
Where can I see MLAB SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects MLAB Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Information Technology companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Mark Christopher Capone view on EDGAR
- - Shiraz Shabanali Ladiwala view on EDGAR
- - Jennifer Sadie Alltoft view on EDGAR
- - Shannon Hall view on EDGAR
- - John James Sullivan view on EDGAR
- - R. Tony Tripeny view on EDGAR
- - Mark Christopher Capone view on EDGAR
- - Jennifer Sadie Alltoft view on EDGAR
- - Shiraz Shabanali Ladiwala view on EDGAR
Related companies with recent insider activity
Learn more
- How to read insider buying signals
- What an open-market purchase by an insider can and cannot tell you.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Information Technology
- Where MLAB's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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