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Proto Labs Inc (New York Stock Exchange:PRLB)
US · Delayed Price · Currency is USD
Also listed: 0KRR.LIndustrials · Manufacturing - Miscellaneous
87.18+1.57 (+1.83%)
Insider Score
––Not scored
PRLB Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
PRLB Stock Insider Trading Activity
PRLB stock’s insider trading shows 11 sales on the open market for an estimated $2.71M by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$0 bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Schumacher Daniel CFO | Sell | 5,000 | $95.32 | $476.60K | 12.5% | 35,019 | Sep 24, 2026 | — | Form 4 |
| Schumacher Daniel CFO | Sell | 4,900 | $85.21 | $417.54K | 10.9% | 40,019 | Sep 17, 2026 | — | Form 4 |
| Schumacher Daniel CFO | Sell | 100 | $85.00 | $8.50K | 0.2% | 44,919 | Sep 16, 2026 | — | Form 4 |
| WEHRWEIN SVEN Director | Sell | 500 | $78.38 | $39.19K | 1.5% | 32,505 | Jun 2, 2026 | — | Form 4 |
| WEHRWEIN SVEN Director | Sell | 1,500 | $76.91 | $115.36K | 4.3% | 33,005 | Jun 2, 2026 | — | Form 4 |
| Krishna Suresh CEO | Tax withheld | 1,247 | $71.36 | $88.99K | 4.0% | 30,147 | May 23, 2026 | — | Form 4 |
| Parlange Bernardo Other | Award | 2,109 | — | — | New | 2,109 | May 20, 2026 | — | Form 4 |
| Schumacher Daniel CFO | Tax withheld | 255 | $71.13 | $18.14K | 0.6% | 45,019 | May 20, 2026 | — | Form 4 |
| Chand Sujeet Director | Award | 2,210 | — | — | 9.0% | 26,863 | May 19, 2026 | — | Form 4 |
| Chin Moonhie Director | Award | 2,210 | — | — | 11.0% | 22,306 | May 19, 2026 | — | Form 4 |
| Gawlick Rainer Director | Award | 2,210 | — | — | 5.0% | 46,093 | May 19, 2026 | — | Form 4 |
| WEHRWEIN SVEN Director | Award | 2,210 | — | — | 6.8% | 34,505 | May 19, 2026 | — | Form 4 |
| KRANTZ DONALD G Director | Award | 2,210 | — | — | 9.0% | 26,863 | May 19, 2026 | — | Form 4 |
| Black Archie C. Director | Award | 2,210 | — | — | 8.4% | 28,428 | May 19, 2026 | — | Form 4 |
| Kenison Michael R. Other | Option exercise | 4,042 | $59.40 | $240.09K | 13.2% | 34,713 | May 12, 2026 | — | Form 4 |
| Kenison Michael R. Other | Option exercise | 1,928 | $33.84 | $65.24K | 7.1% | 29,114 | May 12, 2026 | — | Form 4 |
| Kenison Michael R. Other | Sell | 6,643 | $70.30 | $467.00K | 26.2% | 18,683 | May 12, 2026 | — | Form 4 |
| Kenison Michael R. Other | Sell | 1,613 | $67.58 | $109.01K | 4.6% | 33,100 | May 12, 2026 | — | Form 4 |
| Kenison Michael R. Other | Sell | 4,198 | $68.70 | $288.40K | 12.7% | 28,902 | May 12, 2026 | — | Form 4 |
| Kenison Michael R. Other | Sell | 3,576 | $69.78 | $249.53K | 12.4% | 25,326 | May 12, 2026 | — | Form 4 |
| Kenison Michael R. Other | Option exercise | 1,557 | $39.61 | $61.67K | 5.3% | 30,671 | May 12, 2026 | — | Form 4 |
| Kenison Michael R. Other | Option exercise | 3,756 | $33.84 | $127.10K | 13.8% | 30,942 | May 11, 2026 | — | Form 4 |
| Kenison Michael R. Other | Option exercise | 3,677 | $33.52 | $123.25K | 11.9% | 34,619 | May 11, 2026 | — | Form 4 |
| Kenison Michael R. Other | Sell | 7,433 | $70.26 | $522.24K | 21.5% | 27,186 | May 11, 2026 | — | Form 4 |
| Kenison Michael R. Other | Option exercise | 100 | $33.52 | $3.35K | 0.4% | 27,386 | May 7, 2026 | — | Form 4 |
| Kenison Michael R. Other | Sell | 200 | $70.00 | $14.00K | 0.7% | 27,186 | May 7, 2026 | — | Form 4 |
| Kenison Michael R. Other | Option exercise | 100 | $33.84 | $3.38K | 0.4% | 27,286 | May 7, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Sell (S) — Open-market or private sale
- Award (A) — Grant or award from the company, not a purchase
- Tax withheld (F) — Shares withheld to pay tax or an exercise price
- Option exercise (M) — Exercise or conversion of an exempt derivative
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.