Michael R. Kenison sold $1.6M of PRLB
Chief Operations Officer at Proto Labs Inc. 23,463 shares at an average of $69.73, traded May 11, 2026, filed May 13, 2026.
Score components
- +20RoleCOO
- +25Trade size$1.6M at market
- +20Share of holdings soldSold 68% of holdings
- 0ClusterNo other insider selling within 14 days
- -15Exercise and sellShares came from an option exercise in the same filing
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001628280-26-034651, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| May 11, 2026 | MOption exercise Common Stock10b5-1 | +3,756 | $33.84 | $127k | 30,942 | May 13, 2026 |
| May 11, 2026 | MOption exercise Common Stock10b5-1 | +3,677 | $33.52 | $123k | 34,619 | May 13, 2026 |
| May 11, 2026 | SOpen-market sale Common Stock10b5-1 | -7,433 | $70.26 | $522k | 27,186 | May 13, 2026 |
| May 12, 2026 | MOption exercise Common Stock10b5-1 | +1,928 | $33.84 | $65k | 29,114 | May 13, 2026 |
| May 12, 2026 | MOption exercise Common Stock10b5-1 | +1,557 | $39.61 | $62k | 30,671 | May 13, 2026 |
| May 12, 2026 | MOption exercise Common Stock10b5-1 | +4,042 | $59.40 | $240k | 34,713 | May 13, 2026 |
| May 12, 2026 | SOpen-market sale Common Stock10b5-1 | -1,613 | $67.58 | $109k | 33,100 | May 13, 2026 |
| May 12, 2026 | SOpen-market sale Common Stock10b5-1 | -4,198 | $68.70 | $288k | 28,902 | May 13, 2026 |
| May 12, 2026 | SOpen-market sale Common Stock10b5-1 | -3,576 | $69.78 | $250k | 25,326 | May 13, 2026 |
| May 12, 2026 | SOpen-market sale Common Stock10b5-1 | -6,643 | $70.30 | $467k | 18,683 | May 13, 2026 |
| May 11, 2026 | MOption exercise Employee Stock Option (right to buy)derivative10b5-1 | -3,756 | $0.00 | $0 | 3,856 | May 13, 2026 |
| May 11, 2026 | MOption exercise Employee Stock Option (right to buy)derivative10b5-1 | -3,677 | $0.00 | $0 | 3,778 | May 13, 2026 |
| May 12, 2026 | MOption exercise Employee Stock Option (right to buy)derivative10b5-1 | -1,928 | $0.00 | $0 | 1,928 | May 13, 2026 |
| May 12, 2026 | MOption exercise Employee Stock Option (right to buy)derivative10b5-1 | -1,557 | $0.00 | $0 | 4,674 | May 13, 2026 |
| May 12, 2026 | MOption exercise Employee Stock Option (right to buy)derivative10b5-1 | -4,042 | $0.00 | $0 | 0 | May 13, 2026 |
Related signals
Other insiders at Proto Labs Inc and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 25Weak | Proto Labs Inc | Daniel Schumacher Chief Financial Officer | $477k 5,000 shares | -12% | |
| 24Weak | Proto Labs Inc | Daniel Schumacher Chief Financial Officer | $426k 5,000 shares | -11% | |
| 26Weak | PRLBsell Proto Labs Inc | Sven Wehrwein director | $155k 2,000 shares | -6% | |
| 0Weak | Proto Labs Inc | Michael R. Kenison Chief Operations Officer | $14k 200 shares | -1% | |
| 20Weak | Proto Labs Inc | Michael R. Kenison Chief Operations Officer | $332k 5,000 shares | -17% | |
| 11Weak | Proto Labs Inc | Michael R. Kenison Chief Operations Officer | $150k 2,500 shares | -7% | |
| 0Weak | Proto Labs Inc | Michael R. Kenison Chief Operations Officer | $153k 3,048 shares | -10% | |
| 0Weak | Proto Labs Inc | Michael R. Kenison Chief Operations Officer | $153k 3,048 shares | -10% | |
| 31Weak | Proto Labs Inc | Rainer Gawlick director | $75k 1,715 shares | +4% | |
| 44Moderate | Proto Labs Inc | Suresh Krishna President and CEO | $75k 1,725 shares | +11% |
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.