Proto Labs's top three insider shareholders as of September 09, 2026 are Robert Bodor (President And Ceo, 108.58K shares), Daniel Schumacher (Chief Financial Officer, 45.27K shares), Daniel Schumacher (Chief Financial Officer, 45.02K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Robert Bodor | President And Ceo | 108,579 | 0 | 108,579 | 21.5% | 27 Feb, 2025 |
| 2 | Daniel Schumacher | Chief Financial Officer | 45,019 | 0 | 45,019 | 8.9% | 22 May, 2026 |
| 3 | Rainer Gawlick | Director | 43,883 | 0 | 43,883 | 8.7% | 07 Aug, 2025 |
| 4 | Arthur R. Iii Baker | Chief Technology Officer | 35,307 | 0 | 35,307 | 7.0% | 17 Feb, 2022 |
| 5 | Oleg Ryaboy | Chief Technology Officer | 35,305 | 0 | 35,305 | 7.0% | 27 Feb, 2025 |
| 6 | Sven Wehrwein | Director | 32,505 | 0 | 32,505 | 6.4% | 04 Jun, 2026 |
| 7 | Suresh Krishna | President And Ceo | 30,147 | 0 | 30,147 | 6.0% | 27 May, 2026 |
| 8 | Archie C. Black | Director | 28,428 | 0 | 28,428 | 5.6% | 21 May, 2026 |
| 9 | Donald G Krantz | Executive Vp And Tech. Officer | 26,863 | 0 | 26,863 | 5.3% | 21 May, 2026 |
| 10 | Sujeet Chand | Director | 26,863 | 0 | 26,863 | 5.3% | 21 May, 2026 |
| 11 | Bjoern Klaas | Vp And Mng Director Pl Europe | 23,046 | 0 | 23,046 | 4.6% | 15 Feb, 2024 |
| 12 | Moonhie Chin | Director | 22,306 | 0 | 22,306 | 4.4% | 21 May, 2026 |
| 13 | Stacy Greiner | Director | 19,644 | 0 | 19,644 | 3.9% | 28 May, 2025 |
| 14 | Michael R. Kenison | Chief Operations Officer | 18,683 | 0 | 18,683 | 3.7% | 13 May, 2026 |
| 15 | Marc Kermisch | Chief Technology Ai Officer | 6,513 | 0 | 6,513 | 1.3% | 27 Feb, 2026 |
| 16 | Bernardo Parlange | Chief Commercial Officer | 2,109 | 0 | 2,109 | 0.4% | 22 May, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 02 Jun, 2026 | Sven Wehrwein | Director | Disposed S | 1,500 | $76.91 | $115.36K | 33,005 | Direct |
| 02 Jun, 2026 | Sven Wehrwein | Director | Disposed S | 500 | $78.38 | $39.19K | 32,505 | Direct |
| 23 May, 2026 | Suresh Krishna | President And Ceo | Disposed F | 1,247 | $71.36 | $88.99K | 30,147 | Direct |
| 20 May, 2026 | Bernardo Parlange | Chief Commercial Officer | Acquired A | 2,109 | $0.00 | $0 | 2,109 | Direct |
| 20 May, 2026 | Daniel Schumacher | Chief Financial Officer | Disposed F | 255 | $71.13 | $18.14K | 45,019 | Direct |
| 20 May, 2026 | Bernardo Parlange | Chief Commercial Officer | Acquired A | 3,789 | $0.00 | $0 | 3,789 | Direct |
| 19 May, 2026 | Donald G Krantz | Director | Acquired A | 2,210 | $0.00 | $0 | 26,863 | Direct |
| 19 May, 2026 | Sujeet Chand | Director | Acquired A | 2,210 | $0.00 | $0 | 26,863 | Direct |
| 19 May, 2026 | Archie C. Black | Director | Acquired A | 2,210 | $0.00 | $0 | 28,428 | Direct |
| 19 May, 2026 | Sven Wehrwein | Director | Acquired A | 2,210 | $0.00 | $0 | 34,505 | Direct |
| 19 May, 2026 | Moonhie Chin | Director | Acquired A | 2,210 | $0.00 | $0 | 22,306 | Direct |
| 11 May, 2026 | Michael R. Kenison | Chief Operations Officer | Acquired M | 3,756 | $33.84 | $127.10K | 30,942 | Direct |
| 11 May, 2026 | Michael R. Kenison | Chief Operations Officer | Acquired M | 3,677 | $33.52 | $123.25K | 34,619 | Direct |
| 11 May, 2026 | Michael R. Kenison | Chief Operations Officer | Disposed S | 7,433 | $70.26 | $522.25K | 27,186 | Direct |
| 12 May, 2026 | Michael R. Kenison | Chief Operations Officer | Acquired M | 1,928 | $33.84 | $65.24K | 29,114 | Direct |
| 12 May, 2026 | Michael R. Kenison | Chief Operations Officer | Acquired M | 1,557 | $39.61 | $61.67K | 30,671 | Direct |
| 12 May, 2026 | Michael R. Kenison | Chief Operations Officer | Acquired M | 4,042 | $59.40 | $240.09K | 34,713 | Direct |
| 12 May, 2026 | Michael R. Kenison | Chief Operations Officer | Disposed S | 1,613 | $67.58 | $109.01K | 33,100 | Direct |
| 12 May, 2026 | Michael R. Kenison | Chief Operations Officer | Disposed S | 4,198 | $68.70 | $288.39K | 28,902 | Direct |
| 12 May, 2026 | Michael R. Kenison | Chief Operations Officer | Disposed S | 3,576 | $69.78 | $249.54K | 25,326 | Direct |