Proto Labs (NYSE: PRLB) insider transactions
In the twelve months to 10 November 2026, executives and directors of Proto Labs reported 14 open-market sales of 46,211 shares ($3.3m) and 2 open-market purchases of 1,470 shares ($101,230), by 5 people, according to the Form 4 filings they submitted to the SEC.
Latest transactions
| Date | Insider | Role | Transaction | Shares | Price | Held after | Filing |
|---|---|---|---|---|---|---|---|
| 3 November 2026 | Gawlick Rainer | Director | Open-market purchase | +720 | $68.18 | 46,813 | Form 4 |
| 2 November 2026 | Krishna Suresh | President and CEO | Open-market purchase | +750 | $69.52 | 30,897 | Form 4 |
| 24 September 2026 | Schumacher Daniel | Chief Financial Officer | Open-market sale, 10b5-1 plan | −5,000 | $95.32 | 35,019 | Form 4 |
| 17 September 2026 | Schumacher Daniel | Chief Financial Officer | Open-market sale, 10b5-1 plan | −4,900 | $85.21 | 40,019 | Form 4 |
| 16 September 2026 | Schumacher Daniel | Chief Financial Officer | Open-market sale, 10b5-1 plan | −100 | $85.00 | 44,919 | Form 4 |
| 2 June 2026 | Wehrwein Sven | Director | Open-market sale | −1,500 | $76.91 | 33,005 | Form 4 |
| 2 June 2026 | Wehrwein Sven | Director | Open-market sale | −500 | $78.38 | 32,505 | Form 4 |
| 23 May 2026 | Krishna Suresh | President and CEO | Shares withheld for tax | −1,247 | $71.36 | 30,147 | Form 4 |
| 20 May 2026 | Parlange Bernardo | Chief Commercial Officer | Grant or award | +2,109 | — | 2,109 | Form 4 |
| 20 May 2026 | Schumacher Daniel | Chief Financial Officer | Shares withheld for tax | −255 | $71.13 | 45,019 | Form 4 |
| 19 May 2026 | Krantz Donald G | Director | Grant or award | +2,210 | — | 26,863 | Form 4 |
| 19 May 2026 | Wehrwein Sven | Director | Grant or award | +2,210 | — | 34,505 | Form 4 |
| 19 May 2026 | Gawlick Rainer | Director | Grant or award | +2,210 | — | 46,093 | Form 4 |
| 19 May 2026 | Chin Moonhie | Director | Grant or award | +2,210 | — | 22,306 | Form 4 |
| 19 May 2026 | Chand Sujeet | Director | Grant or award | +2,210 | — | 26,863 | Form 4 |
| 19 May 2026 | Black Archie C. | Director | Grant or award | +2,210 | — | 28,428 | Form 4 |
| 12 May 2026 | Kenison Michael R. | Chief Operations Officer | Option exercise, 10b5-1 plan | +1,928 | $33.84 | 29,114 | Form 4 |
| 12 May 2026 | Kenison Michael R. | Chief Operations Officer | Option exercise, 10b5-1 plan | +1,557 | $39.61 | 30,671 | Form 4 |
| 12 May 2026 | Kenison Michael R. | Chief Operations Officer | Option exercise, 10b5-1 plan | +4,042 | $59.40 | 34,713 | Form 4 |
| 12 May 2026 | Kenison Michael R. | Chief Operations Officer | Open-market sale, 10b5-1 plan | −1,613 | $67.58 | 33,100 | Form 4 |
Names appear as in the filing, surname first. A dash in the price column means the filing reports none, as in grants and gifts.
How to read the table
Only open-market purchases and sales are trades the insider chose to make at the market price, and they are the ones counted in the summary above. Grants, option exercises and shares withheld for tax come from pay plans. A sale marked as a 10b5-1 plan was scheduled in advance under a written plan.
Where each row comes from
From the Form 4 that each executive, director or large shareholder must file with the SEC within two business days of a transaction, read up to 10 November 2026. Each row links to its filing on EDGAR. Only transactions in shares are listed, not derivatives, and amended filings are left out. The accounts of the company are on the Proto Labs page; the method, in data sources.
Information prepared from the Form 4 filings submitted to the SEC, for information purposes only. It is not financial advice or a recommendation to buy or sell. Updated on 12 November 2026.