Michael R. Kenison insider trades: Proto Labs (PRLB) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Michael reports to the SEC
Open-market buys and sales
5 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| May 12, 2026 | PRLB | ↓ Sell | 23,463 | $69.73 | $1.6M | Direct | May 13, 2026 (1d) |
| May 7, 2026 | PRLB | ↓ Sell | 200 | $70.00 | $14K | Direct | May 8, 2026 (1d) |
| Feb 17, 2026 | PRLB | ↓ Sell | 5,000 | $66.46 | $332K | Direct | Feb 18, 2026 (1d) |
| Feb 6, 2026 | PRLB | ↓ Sell | 2,500 | $60.00 | $150K | Direct | Feb 9, 2026 (3d) |
| Nov 25, 2025 | PRLB | ↓ Sell10b5-1 | 3,048 | $50.17 | $153K | Direct | Nov 26, 2025 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other PRLB insiders
Open-market trades in the last 12 months
About Michael R. Kenison's insider trades
Michael R. Kenison is Chief Operations Officer at Proto Labs (PRLB). Since Nov 25, 2025, Michael has reported no open-market purchases and 5 sales worth $2.3M on SEC Form 4. In the last 12 months: 5 sales ($2.3M).
1 sale (7% of the value sold) was made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so it says little about how the insider sees the stock today.
Their filings also include shares withheld for taxes (8 filings), grants and awards (6 filings), option exercises (3 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every PRLB insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.