Insider · CIK 0001197710
John Sakys
Files at MLAB (MESA LABORATORIES INC /CO/). First filing Jun 18, 2025, latest Jun 23, 2026.
In brief
John Sakys files SEC Form 4 as CFO at MLAB (MESA LABORATORIES INC /CO/). Since Jun 18, 2025, John Sakys has reported 0 open-market buys worth $0 and 3 open-market sells worth $439k, the latest filed on Jun 23, 2026.
A track record needs three past buys with six months of prices behind them; John Sakys has 0, so none is measured yet.
The newest scored trade: sold $253k of MLAB on Jun 22, 2026, filed Jun 23, 2026, scored 20 (weak), under a 10b5-1 plan. In the last 12 months: 0 buys worth $0 and 2 sells worth $377k.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
MLAB: MESA LABORATORIES INC /CO/
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 20Weak | MESA LABORATORIES INC /CO/ | $253k 2,827 shares | -13% | +64% from low-15% from high | |
| 27Weak | MESA LABORATORIES INC /CO/ | $124k 1,223 shares | -7% | +75% from low-9% from high | |
| 29Weak | MESA LABORATORIES INC /CO/ | $62k 642 shares | -5% | 0% from low-38% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Jun 22, 2026 | MLAB MESA LABORATORIES INC /CO/ | 2,827 0.05% of outstanding | $253k | Jun 22, 2026 | $124k |
| Jun 16, 2026 | MLAB MESA LABORATORIES INC /CO/ | 1,223 0.02% of outstanding | $124k | Jun 16, 2026 | none |
| Jun 16, 2025 | MLAB MESA LABORATORIES INC /CO/ | 642 0.01% of outstanding | $62k | Jun 16, 2025 | none |
Transactions
Every row this insider has filed, 23 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 18, 2026 | MLAB MESA LABORATORIES INC /CO/ | MOption exercise Common Stock | +1,036 | $95.10 | $99k | 17,574 | Jun 23, 2026 |
| Jun 18, 2026 | MLAB MESA LABORATORIES INC /CO/ | MOption exercise Common Stock | +2,756 | $95.10 | $262k | 20,330 | Jun 23, 2026 |
| Jun 18, 2026 | MLAB MESA LABORATORIES INC /CO/ | AGrant or award Common Stock | +2,282 | $95.10 | $217k | 22,612 | Jun 23, 2026 |
| Jun 22, 2026 | MLAB MESA LABORATORIES INC /CO/ | SOpen-market sale Common Stock10b5-1 | -2,827 | $89.50 | $253k | 19,785 | Jun 23, 2026 |
| Jun 18, 2026 | MLAB MESA LABORATORIES INC /CO/ | MOption exercise Restricted Stock Units - 6derivative | -1,036 | $0.00 | $0 | 0 | Jun 23, 2026 |
| Jun 18, 2026 | MLAB MESA LABORATORIES INC /CO/ | MOption exercise Restricted Stock Units - 7derivative | -2,756 | $0.00 | $0 | 2,755 | Jun 23, 2026 |
| Jun 16, 2026 | MLAB MESA LABORATORIES INC /CO/ | SOpen-market sale Common Stock10b5-1 | -1,223 | $101.27 | $124k | 16,538 | Jun 17, 2026 |
| Jun 15, 2026 | MLAB MESA LABORATORIES INC /CO/ | MOption exercise Common Stock | +2,717 | $104.08 | $283k | 17,761 | Jun 16, 2026 |
| Jun 15, 2026 | MLAB MESA LABORATORIES INC /CO/ | EExpiration of short derivative Non Qualified Stock Optionderivative | -3,951 | $0.00 | $0 | 15,755 | Jun 16, 2026 |
| Jun 15, 2026 | MLAB MESA LABORATORIES INC /CO/ | MOption exercise Restricted Stock Units 8derivative | -2,717 | $0.00 | $0 | 5,416 | Jun 16, 2026 |
| Jun 15, 2026 | MLAB MESA LABORATORIES INC /CO/ | AGrant or award Restricted Stock Units - 9derivative | +8,416 | $0.00 | $0 | 8,416 | Jun 16, 2026 |
| Jun 21, 2025 | MLAB MESA LABORATORIES INC /CO/ | MOption exercise Common Stock | +1,036 | $95.82 | $99k | 15,498 | Jun 25, 2025 |
| Jun 21, 2025 | MLAB MESA LABORATORIES INC /CO/ | FTax withholding Common Stock | -454 | $95.82 | $44k | 15,044 | Jun 25, 2025 |
| Jun 21, 2025 | MLAB MESA LABORATORIES INC /CO/ | MOption exercise Restricted Stock Units - 6derivative | -1,036 | $0.00 | $0 | 1,036 | Jun 25, 2025 |
| Jun 18, 2025 | MLAB MESA LABORATORIES INC /CO/ | MOption exercise Common Stock | +2,840 | $92.99 | $264k | 15,705 | Jun 20, 2025 |
| Jun 18, 2025 | MLAB MESA LABORATORIES INC /CO/ | FTax withholding Common Stock | -1,243 | $92.99 | $116k | 14,462 | Jun 20, 2025 |
| Jun 18, 2025 | MLAB MESA LABORATORIES INC /CO/ | MOption exercise Restricted Stock Units - 7derivative | -2,840 | $0.00 | $0 | 5,511 | Jun 20, 2025 |
| Jun 15, 2025 | MLAB MESA LABORATORIES INC /CO/ | MOption exercise Common Stock | +793 | $0.00 | $0 | 12,839 | Jun 18, 2025 |
| Jun 15, 2025 | MLAB MESA LABORATORIES INC /CO/ | AGrant or award Restricted Stock Units - 8derivative | +8,133 | $0.00 | $0 | 8,133 | Jun 18, 2025 |
| Jun 15, 2015 | MLAB MESA LABORATORIES INC /CO/ | AGrant or award Common Stock | +668 | $0.00 | $0 | 13,507 | Jun 18, 2025 |
| Jun 16, 2025 | MLAB MESA LABORATORIES INC /CO/ | SOpen-market sale Common Stock | -642 | $97.12 | $62k | 12,865 | Jun 18, 2025 |
| Jun 15, 2025 | MLAB MESA LABORATORIES INC /CO/ | MOption exercise Restricted Stock Units - 5derivative | -793 | $0.00 | $0 | 0 | Jun 18, 2025 |
| Jun 10, 2025 | MLAB MESA LABORATORIES INC /CO/ | EExpiration of short derivative Non Qualified Stock Optionsderivative | -4,087 | $0.00 | $0 | 19,706 | Jun 11, 2025 |
Questions about John Sakys
Answered from the filings on this page, as of the latest one.
Is John Sakys buying or selling?
In the last 12 months John Sakys reported 0 open-market buys worth $0 and 2 open-market sells worth $377k on SEC Form 4; the latest was sold $253k of MLAB on Jun 22, 2026. Grants, option exercises and tax withholding are not counted.
How did John Sakys's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and John Sakys has 0.
Where does John Sakys file Form 4?
John Sakys has filed Form 4 at MLAB (MESA LABORATORIES INC /CO/) as CFO. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.