MLAB
MESA LABORATORIES INC · Manufacturing · Market cap $676.4M
Insiders sold $668K net in the last 90 days ·4 sellers, 2 buyers· 1 of 7 sales under Rule 10b5-1 plans· latest Form 4 filed Aug 17, 2026
Insider Buying
$1.4M
reported purchases (SEC code P)
Insider Selling
$1.6M
reported sales (SEC code S)
Unique Insiders
8
in the rolling window
Latest filing
Aug 17, 2026
Kadia Siddhartha
MESA LABORATORIES INC (MLAB) has 22 SEC Form 4 filings (32 transaction rows) in the rolling window, disclosed by 8 distinct insiders. Most recent filing: Aug 17, 2026.
Inside the rolling window, 8 insiders at MESA LABORATORIES INC reported 5 open-market purchases totaling $1.4M and 7 open-market sales totaling $1.6M. Insiders have net sold $216K over the trailing 6 months. The most recent open-market filing is a purchase of 7,093 shares by President and CEO Kadia Siddhartha, dated Aug 13, 2026, worth $800K.
- Industry:Medical - Specialties
- CEO:Siddhartha C. Kadia
- Employees:717
- HQ:Lakewood, CO, US
- IPO:1984-02-29
| Source | |||||||
|---|---|---|---|---|---|---|---|
Kadia SiddharthaFirst filing | President and CEO | Purchase | 7,093 | $800K | Aug 17 | +12.3% | SEC ↗ |
Tripeny R TonyFirst in 5 months | Director | Purchase | 900 | $102K | Aug 17 | +12.3% | SEC ↗ |
Sullivan John JamesFirst filing | Director | Sale | 7,093 | $800K | Aug 17 | +12.3% | SEC ↗ |
| CAO | Sale | 442 | $40K | Jun 23 | +31.4% | SEC ↗ | |
| SVP Operations | Sale | 2,516 | $225K | Jun 23 | +31.4% | SEC ↗ | |
| CFO | Sale | 2,827 | $253K | Jun 23 | +31.4% | SEC ↗ | |
Archbold Brian DavidFirst filing | SVP Operations | Sale | 1,151 | $117K | Jun 17 | +27.3% | SEC ↗ |
Crennen Lyndsey ElizabethFirst filing | CAO | Sale | 118 | $12K | Jun 17 | +27.3% | SEC ↗ |
Sakys JohnFirst filing | CFO | Sale | 1,223 | $124K | Jun 17 | +27.3% | SEC ↗ |
Tripeny R TonyFirst filing | Director | Purchase | 1,315 | $100K | Mar 10 | +65.1% | SEC ↗ |
Capone Mark ChristopherFirst filing | Director | Purchase | 1,301 | $99K | Mar 10 | — | SEC ↗ |
Ladiwala Shiraz ShabanaliFirst filing | Director | Purchase | 3,500 | $253K | Mar 10 | — | SEC ↗ |
Earnings: last 7 quarters
Frequently asked questions
How many SEC Form 4 insider filings does MLAB have?
MESA LABORATORIES INC (MLAB) has 22 SEC Form 4 filings (32 transaction rows) in the rolling 365-day window, disclosed by 8 distinct insiders. Most recent filing: Aug 17, 2026.
When was the most recent SEC Form 4 filing for MLAB?
The most recent Form 4 filing for MLAB on Tracefour is dated Aug 17, 2026.
What is the net insider flow at MLAB over the last 6 months?
Over the trailing 180 days, insiders at MLAB have net sold $216K based on SEC Form 4 disclosures.
What is the total insider buy and sell value at MLAB in the current window?
Inside the rolling window, insiders at MLAB bought $1.4M and sold $1.6M based on SEC Form 4 filings.
Can I get alerts for MLAB insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at MESA LABORATORIES INC (MLAB). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
MESA LABORATORIES INC is in the Manufacturing sector.