PRLB · Insider Trading
PROTO LABS, INC.
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.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-25 | Daniel Schumacher | Chief Financial Officer | Sell | −5,000 | −$476.60K |
| 2026-09-18 | Daniel Schumacher | Chief Financial Officer | Sell | −5,000 | −$426.04K |
| 2026-06-04 | Sven Wehrwein | Director | Sell | −2,000 | −$154.55K |
| 2026-05-27 | Suresh Krishna | President and CEO | F | −1,247 | −$88.99K |
| 2026-05-22 | Daniel Schumacher | Chief Financial Officer | F | −255 | −$18.14K |
| 2026-05-22 | Bernardo Parlange | Chief Commercial Officer | A | +2,109 | — |
| 2026-05-21 | Rainer Gawlick | Director | A | +2,210 | — |
| 2026-05-21 | Moonhie Chin | Director | A | +2,210 | — |
| 2026-05-21 | Sujeet Chand | Director | A | +2,210 | — |
| 2026-05-21 | Archie C. Black | Director | A | +2,210 | — |
| 2026-05-21 | Sven Wehrwein | Director | A | +2,210 | — |
| 2026-05-21 | Donald G Krantz | Director | A | +2,210 | — |
| 2026-05-13 | Michael R. Kenison | Chief Operations Officer | MIXED | −8,503 | −$1.02M |
| 2026-05-08 | Michael R. Kenison | Chief Operations Officer | MIXED | — | −$7.26K |
| 2026-02-27 | Suresh Krishna | President and CEO | A | +13,373 | — |
| 2026-02-27 | Michael R. Kenison | Chief Operations Officer | MIXED | +1,884 | −$33.26K |
| 2026-02-27 | Marc Kermisch | Chief Technology & AI Officer | A | +2,795 | — |
| 2026-02-27 | Daniel Schumacher | Chief Financial Officer | MIXED | +2,570 | −$31.57K |
| 2026-02-18 | Michael R. Kenison | Chief Operations Officer | MIXED | −6,540 | −$436.30K |
| 2026-02-18 | Daniel Schumacher | Chief Financial Officer | F | −1,267 | −$85.55K |
| 2026-02-12 | Michael R. Kenison | Chief Operations Officer | F | −2,684 | −$142.74K |
| 2026-02-12 | Daniel Schumacher | Chief Financial Officer | MIXED | −3,674 | −$256.01K |
| 2026-02-09 | Michael R. Kenison | Chief Operations Officer | Sell | −2,500 | −$150.00K |
| 2026-02-04 | Michael R. Kenison | Chief Operations Officer | A | +8,128 | — |
| 2026-02-04 | Daniel Schumacher | Chief Financial Officer | A | +20,686 | — |
| 2025-12-03 | Michael R. Kenison | Chief Operations Officer | MIXED | — | −$49.79K |
| 2025-11-26 | Michael R. Kenison | Chief Operations Officer | MIXED | — | −$49.79K |
| 2025-11-19 | Marc Kermisch | Chief Technology & AI Officer | A | +3,718 | — |
| 2025-08-07 | Rainer Gawlick | Director | Buy | +1,715 | +$75.10K |
| 2025-08-06 | Suresh Krishna | President and CEO | Buy | +1,725 | +$75.05K |
| 2025-05-28 | Sven Wehrwein | Director | A | +3,939 | — |
| 2025-05-28 | Stacy Greiner | Director | A | +3,939 | — |
| 2025-05-28 | Rainer Gawlick | Director | A | +3,939 | — |
| 2025-05-28 | Moonhie Chin | Director | A | +3,939 | — |
| 2025-05-28 | Donald G Krantz | Director | A | +3,939 | — |
| 2025-05-28 | Sujeet Chand | Director | A | +3,939 | — |
| 2025-05-28 | Archie C. Black | Director | A | +3,939 | — |
| 2025-05-28 | Suresh Krishna | President and CEO | A | +16,296 | — |
| 2025-05-22 | Daniel Schumacher | Chief Financial Officer | F | −305 | −$12.47K |
| 2025-05-22 | Michael R. Kenison | Chief Operations Officer | F | −204 | −$8.34K |
| 2025-02-27 | Michael R. Kenison | Chief Operations Officer | A | +6,943 | — |
| 2025-02-27 | Robert Bodor | President and CEO | A | +18,935 | — |
| 2025-02-27 | Oleg Ryaboy | Chief Technology Officer | A | +7,574 | — |
| 2025-02-27 | Daniel Schumacher | Chief Financial Officer | A | +4,419 | — |
| 2025-02-18 | Robert Bodor | President and CEO | MIXED | +8,766 | −$666.62K |
| 2025-02-18 | Michael R. Kenison | Chief Operations Officer | MIXED | −382 | −$102.49K |
| 2025-02-18 | Oleg Ryaboy | Chief Technology Officer | F | −2,461 | −$110.82K |
| 2025-02-18 | Daniel Schumacher | Chief Financial Officer | MIXED | +715 | −$106.36K |
| 2024-09-09 | Robert Bodor | President and CEO | Buy | +3,480 | +$99.80K |
| 2024-05-24 | Stacy Greiner | Director | A | +4,701 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Robert Bodor | President and CEO | 108,579 | $9.16M |
| Rainer Gawlick | Director | 46,093 | $3.89M |
| Oleg Ryaboy | Chief Technology Officer | 35,305 | $2.98M |
| Daniel Schumacher | Chief Financial Officer | 35,019 | $2.95M |
| Sven Wehrwein | Director | 33,005 | $2.78M |
| Michael R. Kenison | Chief Operations Officer | 30,942 | $2.61M |
| Suresh Krishna | President and CEO | 30,147 | $2.54M |
| Archie C. Black | Director | 28,428 | $2.40M |
| Donald G Krantz | Director | 26,863 | $2.27M |
| Sujeet Chand | Director | 26,863 | $2.27M |
| Moonhie Chin | Director | 22,306 | $1.88M |
| Stacy Greiner | Director | 19,644 | $1.66M |
| Marc Kermisch | Chief Technology & AI Officer | 6,513 | $549.44K |
| Bernardo Parlange | Chief Commercial Officer | 2,109 | $177.92K |
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.
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.