MLAB
insider transactionsMESA LABORATORIES INC /CO/ — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 30d
-2.5K
0 buy · 2.5K sell
Net value · 30d
-$252.4K
$0 in · $252.4K out
Sentiment · 30d
Net selling
0% buying · 100% selling
Open-market trades · 30d
3
0 buy · 2.5K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
-
Sell·S
John Sakys KEY
CFO · 10b5-1
$123.8K
1.2K sh · $101.27
Own -7%
-
Sell·S
CAO · 10b5-1
$11.9K
118 sh · $101.27
Own -7%
-
Sell·S
SVP Operations · 10b5-1
$116.6K
1.2K sh · $101.27
Own -24%
-
Grant·A
John Sakys KEY
CFO
$0
8.4K sh
Own New
-
Exercise·M
John Sakys KEY
CFO
$0
2.7K sh
Own +101%
-
Other·E
John Sakys KEY
CFO
$0
4.0K sh
-
Exercise·M
John Sakys KEY
CFO
$282.8K
2.7K sh · $104.08
Own +18%
-
Grant·A
SVP Operations
$0
4.3K sh
Own New
-
Exercise·M
SVP Operations
$0
2.5K sh
Own +101%
-
Other·E
SVP Operations
$0
1.8K sh
-
Exercise·M
SVP Operations
$255.4K
2.5K sh · $104.08
Own +102%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 16, 2026 | John Sakys KEY 10b5-1 | Sell S | 1.2K | $123.8K |
| Jun 16, 2026 | Lyndsey Elizabeth Crennen 10b5-1 | Sell S | 118 | $11.9K |
| Jun 16, 2026 | Brian David Archbold 10b5-1 | Sell S | 1.2K | $116.6K |
| Jun 15, 2026 | John Sakys KEY | Grant A | 8.4K | $0 |
| Jun 15, 2026 | John Sakys KEY | Exercise M | 2.7K | $0 |
| Jun 15, 2026 | John Sakys KEY | Other E | 4.0K | $0 |
| Jun 15, 2026 | John Sakys KEY | Exercise M | 2.7K | $282.8K |
| Jun 15, 2026 | Brian David Archbold | Grant A | 4.3K | $0 |
| Jun 15, 2026 | Brian David Archbold | Exercise M | 2.5K | $0 |
| Jun 15, 2026 | Brian David Archbold | Other E | 1.8K | $0 |
| Jun 15, 2026 | Brian David Archbold | Exercise M | 2.5K | $255.4K |
About MLAB insider trading
This page tracks insider transactions for MESA LABORATORIES INC /CO/ (MLAB) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.