PRLB (PROTO LABS, INC.)
Insider Trading Activity
Every open-market purchase and sale reported by PRLB officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-04 | SVEN WEHRWEIN | Director | Sell | — | — |
| 2026-05-27 | Suresh Krishna | President and CEO | F | — | — |
| 2026-05-22 | Daniel Schumacher | Chief Financial Officer | F | — | — |
| 2026-05-22 | Bernardo Parlange | Chief Commercial Officer | A | — | — |
| 2026-05-21 | Rainer Gawlick | Director | A | — | — |
| 2026-05-21 | Moonhie Chin | Director | A | — | — |
| 2026-05-21 | Sujeet Chand | Director | A | — | — |
| 2026-05-21 | Archie C. Black | Director | A | — | — |
| 2026-05-21 | SVEN WEHRWEIN | Director | A | — | — |
| 2026-05-21 | DONALD G KRANTZ | Director | A | — | — |
| 2026-05-13 | Michael R. Kenison | Chief Operations Officer | MIXED | — | — |
| 2026-05-08 | Michael R. Kenison | Chief Operations Officer | MIXED | — | — |
| 2026-02-27 | Suresh Krishna | President and CEO | A | — | — |
| 2026-02-27 | Michael R. Kenison | Chief Operations Officer | MIXED | — | — |
| 2026-02-27 | Marc Kermisch | Chief Technology & AI Officer | A | — | — |
| 2026-02-27 | Daniel Schumacher | Chief Financial Officer | MIXED | — | — |
| 2026-02-18 | Michael R. Kenison | Chief Operations Officer | MIXED | — | — |
| 2026-02-18 | Daniel Schumacher | Chief Financial Officer | F | — | — |
| 2026-02-12 | Michael R. Kenison | Chief Operations Officer | F | — | — |
| 2026-02-12 | Daniel Schumacher | Chief Financial Officer | MIXED | — | — |
| 2026-02-09 | Michael R. Kenison | Chief Operations Officer | Sell | — | — |
| 2026-02-04 | Michael R. Kenison | Chief Operations Officer | A | — | — |
| 2026-02-04 | Daniel Schumacher | Chief Financial Officer | A | — | — |
| 2025-12-03 | Michael R. Kenison | Chief Operations Officer | MIXED | — | — |
| 2025-11-26 | Michael R. Kenison | Chief Operations Officer | MIXED | — | — |
| 2025-11-19 | Marc Kermisch | Chief Technology & AI Officer | A | — | — |
| 2025-08-07 | Rainer Gawlick | Director | Buy | — | — |
| 2025-08-06 | Suresh Krishna | President and CEO | Buy | — | — |
| 2025-05-28 | SVEN WEHRWEIN | Director | A | — | — |
| 2025-05-28 | Stacy Greiner | Director | A | — | — |
| 2025-05-28 | Rainer Gawlick | Director | A | — | — |
| 2025-05-28 | Moonhie Chin | Director | A | — | — |
| 2025-05-28 | DONALD G KRANTZ | Director | A | — | — |
| 2025-05-28 | Sujeet Chand | Director | A | — | — |
| 2025-05-28 | Archie C. Black | Director | A | — | — |
| 2025-05-28 | Suresh Krishna | President and CEO | A | — | — |
| 2025-05-22 | Daniel Schumacher | Chief Financial Officer | F | — | — |
| 2025-05-22 | Michael R. Kenison | Chief Operations Officer | F | — | — |
| 2025-02-27 | Michael R. Kenison | Chief Operations Officer | A | — | — |
| 2025-02-27 | Robert Bodor | President and CEO | A | — | — |
| 2025-02-27 | Oleg Ryaboy | Chief Technology Officer | A | — | — |
| 2025-02-27 | Daniel Schumacher | Chief Financial Officer | A | — | — |
| 2025-02-18 | Robert Bodor | President and CEO | MIXED | — | — |
| 2025-02-18 | Michael R. Kenison | Chief Operations Officer | MIXED | — | — |
| 2025-02-18 | Oleg Ryaboy | Chief Technology Officer | F | — | — |
| 2025-02-18 | Daniel Schumacher | Chief Financial Officer | MIXED | — | — |
| 2024-09-09 | Robert Bodor | President and CEO | Buy | — | — |
| 2024-05-24 | Stacy Greiner | Director | A | — | — |
| 2024-05-24 | Archie C. Black | Director | A | — | — |
| 2024-05-24 | DONALD G KRANTZ | Director | A | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 5,991,790 | — |
| — | 10%+ Owner | 4,822,400 | — |
| — | Director | 2,013,620 | — |
| — | 10%+ Owner | 2,006,402 | — |
| — | Chairman & Chief Tchnlgy Offcr | 1,881,840 | — |
| — | 10%+ Owner | 1,730,076 | — |
| — | Executive Vice President | 145,000 | — |
| — | President and CEO | 108,579 | — |
| — | President and CEO | 77,369 | — |
| — | CFO & Principal Accounting Off | 77,230 | — |
| — | President and CEO | 71,331 | — |
| — | Director | 66,012 | — |
| — | Director | 46,093 | — |
| — | Chief Financial Officer | 45,019 | — |
| — | Chief Technology Officer | 36,695 | — |
| — | Chief Technology Officer | 35,305 | — |
| — | Chief Financial Officer | 33,657 | — |
| — | Director | 33,005 | — |
| — | Chief Operations Officer | 30,942 | — |
| — | President and CEO | 30,147 | — |
| — | Director | 28,428 | — |
| — | VP/GM & Managing Director-EMEA | 28,091 | — |
| — | Director | 26,863 | — |
| — | Director | 26,863 | — |
| — | Vice President Global Sales | 24,827 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the PRLB quote page; the site-wide leaderboard is on the insider transactions hub.