12 insiders reported 58 Form 4 transactions for Proto Labs Inc (PRLB) over the past 18 months (most recent 2026-09-18). Recent activity: Schumacher Daniel (Chief Financial Officer) Sell 4,900 shares, Schumacher Daniel (Chief Financial Officer) Sell 100 shares, WEHRWEIN SVEN (Director) Sell 1,500 shares, WEHRWEIN SVEN (Director) Sell 500 shares, Krishna Suresh (President and CEO) Sell 1,247 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-18 | Schumacher Daniel | Chief Financial Officer | Sell | 4,900 | $417,535 |
| 2026-09-18 | Schumacher Daniel | Chief Financial Officer | Sell | 100 | $8,500 |
| 2026-06-04 | WEHRWEIN SVEN | Director | Sell | 1,500 | $115,365 |
| 2026-06-04 | WEHRWEIN SVEN | Director | Sell | 500 | $39,190 |
| 2026-05-27 | Krishna Suresh | President and CEO | Sell | 1,247 | $88,986 |
| 2026-05-22 | Parlange Bernardo | Chief Commercial Officer | Buy | 2,109 | $0 |
| 2026-05-22 | Schumacher Daniel | Chief Financial Officer | Sell | 255 | $18,138 |
| 2026-05-21 | KRANTZ DONALD G | Director | Buy | 2,210 | $0 |
| 2026-05-21 | Chin Moonhie | Director | Buy | 2,210 | $0 |
| 2026-05-21 | Gawlick Rainer | Director | Buy | 2,210 | $0 |
| 2026-05-21 | Black Archie C. | Director | Buy | 2,210 | $0 |
| 2026-05-21 | Chand Sujeet | Director | Buy | 2,210 | $0 |
| 2026-05-21 | WEHRWEIN SVEN | Director | Buy | 2,210 | $0 |
| 2026-05-13 | Kenison Michael R. | Chief Operations Officer | Buy | 3,756 | $127,103 |
| 2026-05-13 | Kenison Michael R. | Chief Operations Officer | Buy | 3,677 | $123,253 |
| 2026-05-13 | Kenison Michael R. | Chief Operations Officer | Sell | 7,433 | $522,243 |
| 2026-05-13 | Kenison Michael R. | Chief Operations Officer | Buy | 1,928 | $65,244 |
| 2026-05-13 | Kenison Michael R. | Chief Operations Officer | Buy | 1,557 | $61,673 |
| 2026-05-13 | Kenison Michael R. | Chief Operations Officer | Buy | 4,042 | $240,095 |
| 2026-05-13 | Kenison Michael R. | Chief Operations Officer | Sell | 1,613 | $109,007 |
| 2026-05-13 | Kenison Michael R. | Chief Operations Officer | Sell | 4,198 | $288,403 |
| 2026-05-13 | Kenison Michael R. | Chief Operations Officer | Sell | 3,576 | $249,533 |
| 2026-05-13 | Kenison Michael R. | Chief Operations Officer | Sell | 6,643 | $467,003 |
| 2026-05-08 | Kenison Michael R. | Chief Operations Officer | Buy | 100 | $3,384 |
| 2026-05-08 | Kenison Michael R. | Chief Operations Officer | Buy | 100 | $3,352 |
来源：SEC Form 4 申报文件 · 截至 2026-09-18