Mesa Laboratories, Inc.
Mesa Laboratories, Inc. (MLAB) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · MLAB · as of Jun 8, 2026
Activity summary
Buy transactions
3
P-Purchase only
Sell transactions
3
12 Months
Buy/Sell ratio
1.00
Buy/Sell (by trades)
Overall sentiment
Mesa Laboratories, Inc. insiders have shown mixed buying and selling activity over the past 12 Months.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 8, 2026
MLAB insider buying and selling by quarter
MLAB insider selling · MLAB insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 8, 2026
Active insiders
Most active in past 12 months · MLAB ceo insider trading
Showing all insiders · Click a card to filter the transactions table below
▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API
Recent insider transactions
MLAB executive sell shares · MLAB board member insider trading · MLAB insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| Mar 10, 2026 | Ladiwala Shiraz Shabanali Director | Purchase | 3,500 | $253K | Form 4 |
| Mar 10, 2026 | Capone Mark Christopher Director | Purchase | 1,301 | $99K | Form 4 |
| Mar 10, 2026 | Tripeny R Tony Director | Purchase | 1,315 | $100K | Form 4 |
| Dec 2, 2025 | Sullivan John James Director | Gift | 2,000 | — | Form 4 |
| Oct 27, 2025 | Owens Gary M President and CEO | Option | 11,558 | — | Form 4 |
| Aug 15, 2025 | Ladiwala Shiraz Shabanali Director | Option | 1,949 | — | Form 4 |
| Aug 15, 2025 | Sullivan John James Director | Option | 1,404 | — | Form 4 |
| Aug 15, 2025 | Hall Shannon Director | Option | 1,404 | — | Form 4 |
| Aug 15, 2025 | Tripeny R Tony Director | Option | 1,404 | — | Form 4 |
| Aug 15, 2025 | Capone Mark Christopher Director | Option | 1,404 | — | Form 4 |
| Aug 15, 2025 | Alltoft Jennifer Sadie Director | Option | 1,404 | — | Form 4 |
| Jun 21, 2025 | Sakys John CFO | Option | 1,036 | $99K | Form 4 |
| Jun 21, 2025 | Sakys John CFO | Other | 454 | $44K | Form 4 |
| Jun 21, 2025 | Archbold Brian David SVP Operations | Option | 844 | $81K | Form 4 |
| Jun 21, 2025 | Archbold Brian David SVP Operations | Other | 385 | $37K | Form 4 |
| Jun 21, 2025 | Owens Gary M President and CEO | Option | 3,301 | $316K | Form 4 |
| Jun 21, 2025 | Owens Gary M President and CEO | Other | 1,445 | $138K | Form 4 |
| Jun 18, 2025 | Owens Gary M President and CEO | Option | 8,707 | $810K | Form 4 |
| Jun 18, 2025 | Owens Gary M President and CEO | Other | 3,810 | $354K | Form 4 |
| Jun 18, 2025 | Archbold Brian David SVP Operations | Option | 2,556 | $238K | Form 4 |
| Jun 18, 2025 | Archbold Brian David SVP Operations | Other | 1,166 | $108K | Form 4 |
| Jun 18, 2025 | Sakys John CFO | Option | 2,840 | $264K | Form 4 |
| Jun 18, 2025 | Sakys John CFO | Other | 1,243 | $116K | Form 4 |
| Jun 15, 2025 | Owens Gary M President and CEO | Option | 2,102 | — | Form 4 |
| Jun 16, 2025 | Owens Gary M President and CEO | Sale | 1,939 | $188K | Form 4 |
Ladiwala Shiraz Shabanali
Director
Date
Mar 10
Shares
3,500
Price
$72.23
Value
$253K
Capone Mark Christopher
Director
Date
Mar 10
Shares
1,301
Price
$76.35
Value
$99K
Archbold Brian David
SVP Operations
Date
Jun 21
Shares
844
Price
$95.82
Value
$81K
Archbold Brian David
SVP Operations
Date
Jun 21
Shares
385
Price
$95.82
Value
$37K
Archbold Brian David
SVP Operations
Date
Jun 18
Shares
2,556
Price
$92.99
Value
$238K
Archbold Brian David
SVP Operations
Date
Jun 18
Shares
1,166
Price
$92.99
Value
$108K
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About MLAB insider trading
MLAB insider trades
Mesa Laboratories, Inc. (MLAB) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Owens Gary M (President and CEO), Archbold Brian David (SVP Operations), Sakys John (CFO). Over the past 12 months, 5 insiders have filed transactions with the SEC. MLAB insiders have been mixed buying and selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For Mesa Laboratories, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
MLAB insider trading · 5 questionsThe insiders of Mesa Laboratories, Inc. (MLAB) include executives and directors such as Owens Gary M (President and CEO), Archbold Brian David (SVP Operations), Sakys John (CFO), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026