List of insiders holdings for Proto Labs Inc:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | Protomold Investment Company LLC 10% Owner | 2012-08-23 18:02:55 | 3,189,648 0 | 3,189,648 | Form 4 |
| 2 | KINGSLEY DOUGLAS A Director | 2013-02-25 19:31:06 | 13,684 2,004,290 | 2,017,974 | Form 4 |
| 3 | LUKIS LAWRENCE J Chairman of the BOD | 2019-01-15 15:09:26 | 1,306,840 0 | 1,306,840 | Form 13G |
| 4 | Langton William R. EVP of Finance | 2012-10-04 17:16:58 | 201,750 0 | 201,750 | Form 4 |
| 5 | Kubicek Mark R. Executive Vice President | 2012-10-04 17:10:40 | 145,000 0 | 145,000 | Form 4 |
| 6 | Bodor Robert President and CEO | 2025-02-27 16:31:31 | 142,565 0 | 142,565 | Form 4 |
| 7 | Cleveland Bradley A. CEO | 2014-05-22 18:10:01 | 2,529 64,235 | 66,764 | Form 4 |
| 8 | LOFTUS MARGARET A Director | 2014-03-17 16:30:02 | 66,012 0 | 66,012 | Form 4 |
| 9 | HOLT VICTORIA M President and CEO | 2021-02-18 16:43:25 | 54,840 0 | 54,840 | Form 4 |
| 10 | Baker Arthur R. III Chief Technology Officer | 2022-02-17 16:07:01 | 44,541 0 | 44,541 | Form 4 |
| 11 | Schumacher Daniel Chief Financial Officer | 2026-02-12 16:48:48 | 43,971 0 | 43,971 | Form 4 |
| 12 | Gawlick Rainer Director | 2025-08-07 16:09:01 | 43,883 0 | 43,883 | Form 4 |
| 13 | Ryaboy Oleg Chief Technology Officer | 2025-02-27 16:32:39 | 42,103 0 | 42,103 | Form 4 |
| 14 | WAY JOHN Chief Financial Officer | 2021-02-18 16:40:21 | 36,785 0 | 36,785 | Form 4 |
| 15 | WEHRWEIN SVEN Director | 2025-05-28 17:51:26 | 32,295 0 | 32,295 | Form 4 |
| 16 | Kenison Michael R. Chief Operations Officer | 2026-02-12 16:50:27 | 31,842 0 | 31,842 | Form 4 |
| 17 | Klaas Bjoern VP and Mng Director-PL Europe | 2024-02-15 17:08:06 | 29,228 0 | 29,228 | Form 4 |
| 18 | Black Archie C. Director | 2025-05-28 18:04:48 | 26,218 0 | 26,218 | Form 4 |
| 19 | KRANTZ DONALD G Director | 2025-05-28 17:49:41 | 24,653 0 | 24,653 | Form 4 |
| 20 | Chand Sujeet Director | 2025-05-28 17:53:31 | 24,653 0 | 24,653 | Form 4 |
| 21 | Chin Moonhie Director | 2025-05-28 17:54:04 | 20,096 0 | 20,096 | Form 4 |
| 22 | Greiner Stacy Director | 2025-05-28 17:52:41 | 19,644 0 | 19,644 | Form 4 |
| 23 | Krishna Suresh President and CEO | 2025-08-06 20:48:14 | 18,021 0 | 18,021 | Form 4 |
| 24 | Schneider Jacqueline D. Vice President Global Sales | 2016-04-06 16:58:47 | 17,295 0 | 17,295 | Form 4 |
| 25 | Pang Thomas H Managing Dir.-Proto Labs G.K. | 2013-02-19 18:59:45 | 16,170 0 | 16,170 | Form 4 |
| 26 | Goodman John B Director | 2021-05-20 16:57:22 | 14,106 0 | 14,106 | Form 4 |
| 27 | Tumelty John B. VP/GM & Managing Director-EMEA | 2017-11-30 10:43:03 | 13,769 0 | 13,769 | Form 4/A |
| 28 | Dietrick William M. Vice President of Marketing | 2013-02-19 18:51:23 | 12,130 0 | 12,130 | Form 4 |
| 29 | FEIN DAVID M Chief Revenue Officer | 2019-02-15 15:48:35 | 12,009 0 | 12,009 | Form 4 |
| 30 | Kermisch Marc Chief Technology & AI Officer | 2025-11-19 16:13:18 | 10,536 0 | 10,536 | Form 4 |
| 31 | Smith Brian K Director | 2016-05-23 16:40:55 | 4,778 0 | 4,778 | Form 4 |
| 32 | Bolton Edward E. Vice President, Culture | 2013-05-13 19:11:27 | 4,520 0 | 4,520 | Form 4 |
| 33 | JUDD JOHN R CFO & Principal Accounting Off | 2014-08-01 15:35:45 | 2,230 0 | 2,230 | Form 4 |
| 34 | KOHRS DOUGLAS W Director | 2015-06-04 09:50:31 | 1,609 0 | 1,609 | Form 4/A |
| 35 | Blodgett Matthew C Director | 2013-07-11 16:36:16 | 1,379 0 | 1,379 | Form 4 |
| 36 | NBGE Manager LLC ANDERSON EDWARD T DAMORE RICHARD A NBGE GP LLC NORTH BRIDGE GROWTH EQUITY I LP North Bridge Growth Management L.P. 10% Owner | 2014-02-10 17:21:06 | 0 0 | 0 | Form 13G |