Over the last 12 months, Mesa Laboratories insiders reported no purchases and 6 sales totaling $770K across SEC Form 4 filings. 67% of the activity was filed under pre-arranged 10b5-1 trading plans.
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| Jun 22, 2026 | Crennen Lyndsey ElizabethCAO · O | ▼ Sale | 442 | $89.5 | $40K | -18% | — |
| Jun 22, 2026 | Archbold Brian DavidSVP Operations · O | ▼ Sale | 2,516 | $89.5 | $225K | -28.3% | — |
| Jun 22, 2026 | Sakys JohnCFO · O | ▼ Sale | 2,827 | $89.5 | $253K | -12.5% | plan |
| Jun 16, 2026 | Archbold Brian DavidSVP Operations · O | ▼ Sale | 1,151 | $101.27 | $117K | -23.7% | plan |
| Jun 16, 2026 | Crennen Lyndsey ElizabethCAO · O | ▼ Sale | 118 | $101.27 | $12K | -7.4% | plan |
| Jun 16, 2026 | Sakys JohnCFO · O | ▼ Sale | 1,223 | $101.27 | $124K | -6.9% | plan |
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $MLAB feed.