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Mesa Laboratories stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions+72.5% to $128.25
Mesa Laboratories (MLAB) stock rose 73% over the last 252 sessions, to $128.25. On the way it reported 4 quarters, its insiders filed 9 open-market trades and 4 Form 144 notices of planned sales, and the company filed 4 material 8-Ks. Each is marked on the price and listed with what the stock did next.
Each mark, and what followed
| Date | Kind | What | Next session | 5 sessions | 21 sessions |
|---|---|---|---|---|---|
| Oct 13, 2026 | 8-K | Exit or disposal costs | −0.4% (−0.4% vs SPY) | −3.8% (−2.3% vs SPY) | — |
| Aug 27, 2026 | Form 144 | Form 144: Gary M. Owens plans to sell $2.6M | +1.2% (+0.5% vs SPY) | +2.8% (+3.0% vs SPY) | +5.4% (+4.5% vs SPY) |
| Aug 21, 2026 | Form 144 | Form 144: Gary M. Owens plans to sell $2.5M | +4.6% (+4.2% vs SPY) | +7.7% (+6.6% vs SPY) | +10.3% (+8.6% vs SPY) |
| Aug 13, 2026 | Insider buy | Tripeny R Tony bought $102K | +0.3% (−0.4% vs SPY) | +6.0% (+6.4% vs SPY) | +7.0% (+8.1% vs SPY) |
| Aug 13, 2026 | Insider sale | Sullivan John James sold $800K | +0.3% (−0.4% vs SPY) | +6.0% (+6.4% vs SPY) | +7.0% (+8.1% vs SPY) |
| Aug 13, 2026 | Insider buy | Kadia Siddhartha bought $800K | +0.3% (−0.4% vs SPY) | +6.0% (+6.4% vs SPY) | +7.0% (+8.1% vs SPY) |
| Aug 10, 2026 | Earnings | Earnings: missed the EPS estimate by -49.1% | −1.0% (−1.0% vs SPY) | +3.2% (+2.8% vs SPY) | +18.8% (+19.8% vs SPY) |
| Jun 22, 2026 | Form 144 | Form 144: Brian David Archbold plans to sell $225K | −2.0% (−1.7% vs SPY) | +7.4% (+9.8% vs SPY) | +2.5% (+2.3% vs SPY) |
| Jun 22, 2026 | Form 144 | Form 144: John Sakys plans to sell $253K | −2.0% (−1.7% vs SPY) | +7.4% (+9.8% vs SPY) | +2.5% (+2.3% vs SPY) |
| Jun 22, 2026 | Insider sale | Sakys John sold $253K | −2.0% (−1.7% vs SPY) | +7.4% (+9.8% vs SPY) | +2.5% (+2.3% vs SPY) |
| Jun 22, 2026 | Insider sale | Crennen Lyndsey Elizabeth sold $40K | −2.0% (−1.7% vs SPY) | +7.4% (+9.8% vs SPY) | +2.5% (+2.3% vs SPY) |
| Jun 22, 2026 | Insider sale | Archbold Brian David sold $225K | −2.0% (−1.7% vs SPY) | +7.4% (+9.8% vs SPY) | +2.5% (+2.3% vs SPY) |
| Jun 15, 2026 | 8-K | Directors and officers: departures, appointments, pay | −4.3% (−3.7% vs SPY) | −12.4% (−9.8% vs SPY) | −4.5% (−4.2% vs SPY) |
| May 27, 2026 | Earnings | Earnings: beat the EPS estimate by 31.5% | −15.6% (−15.6% vs SPY) | +0.6% (−0.6% vs SPY) | −7.7% (−5.8% vs SPY) |
| Mar 23, 2026 | 8-K | Directors and officers: departures, appointments, pay | −1.5% (−1.2% vs SPY) | +3.2% (+6.8% vs SPY) | +20.6% (+12.4% vs SPY) |
| Mar 10, 2026 | Insider buy | Tripeny R Tony bought $100K | −18.0% (−17.9% vs SPY) | −10.5% (−9.1% vs SPY) | +6.9% (+7.0% vs SPY) |
| Mar 10, 2026 | Insider buy | Ladiwala Shiraz Shabanali bought $253K | −18.0% (−17.9% vs SPY) | −10.5% (−9.1% vs SPY) | +6.9% (+7.0% vs SPY) |
| Mar 10, 2026 | Insider buy | Capone Mark Christopher bought $99K | −18.0% (−17.9% vs SPY) | −10.5% (−9.1% vs SPY) | +6.9% (+7.0% vs SPY) |
| Mar 9, 2026 | 8-K | Directors and officers: departures, appointments, pay | −18.0% (−17.9% vs SPY) | −10.5% (−9.1% vs SPY) | +6.9% (+7.0% vs SPY) |
| Feb 3, 2026 | Earnings | Earnings: beat the EPS estimate by 19.9% | +8.4% (+9.2% vs SPY) | +12.1% (+12.3% vs SPY) | +14.4% (+15.9% vs SPY) |
| Nov 6, 2025 | Earnings | Earnings: beat the EPS estimate by 35.2% | +0.9% (+2.0% vs SPY) | +7.4% (+6.5% vs SPY) | +4.7% (+3.5% vs SPY) |
Insiders’ record here
In the year on the chart, Mesa Laboratories' insiders reported 5 open-market buys ($1.4M) and 4 sales ($1.3M). Of the 6 old enough to score, 3 were followed by the stock doing what the trade implied over the next 63 sessions (beating SPY after a buy, lagging it after a sale); the median excess return after a buy was +40.1% and after a sale +37.5%.
Across the whole universe (19,782 scored trades), insider buys beat the market 46% of the time and sales were followed by a lagging stock 61% of the time; buys of $1M or more 39%. Every pattern →
What this kind of 8-K usually did
| Item | 8-Ks | Next session, median | Up next session | 21 sessions, median | Typical size |
|---|---|---|---|---|---|
| 5.02 Directors and officers: departures, appointments, pay | 39,174 | −0.1% | 48% | +0.7% | ±1.4% |
| 2.05 Exit or disposal costs | 954 | −0.2% | 47% | +0.5% | ±2.4% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
Report card: every quarter against the estimate → Mesa Laboratories: every quarter → Live insider trades →
Prices are daily closes; filings and trades are as filed with the SEC (Form 4 within two business days of the trade, 8-K within four of the event). Moves after a mark are the stock's close-to-close change and the same for SPY; they describe the record, not what the next one will do. Not investment advice.