Proto Labs, Inc. (PRLB) has 20 known insider and institutional holders on record. The largest holder is NBGE Manager, LLC with 2,004,290 shares. Other notable holders include LUKIS LAWRENCE J and Protomold Investment Company, LLC.
Over the last 12 months, insiders have made 30 transactions in PRLB stock — 17 buys (valued at $2.62M) and 2 sells (valued at $482.32K). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
PRLB Insider Ownership
Top Holder
NBGE Manager, LLC
2,004,290 shares
Buys (12 mo)
17
$2.62M value
Sells (12 mo)
2
$482.32K value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Nbge Manager, Llc |
10 Percent Owner |
2,004,290 |
2013-02-25 |
|
| 2 |
Lukis Lawrence J |
Director |
1,881,840 |
2016-02-12 |
|
| 3 |
Protomold Investment Company, Llc |
10 Percent Owner |
1,730,076 |
2012-08-23 |
|
| 4 |
Kubicek Mark R. |
Executive Vice President |
145,000 |
2012-10-04 |
|
| 5 |
Loftus Margaret A |
Director |
61,250 |
2013-09-04 |
|
| 6 |
Holt Victoria M |
President and CEO |
58,459 |
2020-03-11 |
|
| 7 |
Gawlick Rainer |
Director |
43,883 |
2025-08-07 |
|
| 8 |
Bodor Robert |
President and CEO |
33,986 |
2025-02-27 |
|
| 9 |
Wehrwein Sven |
Director |
32,295 |
2025-05-28 |
|
| 10 |
Black Archie C. |
Director |
26,218 |
2025-05-28 |
|
| 11 |
Chand Sujeet |
Director |
24,653 |
2025-05-28 |
|
| 12 |
Krantz Donald G |
Director |
24,653 |
2025-05-28 |
|
| 13 |
Krishna Suresh |
President and CEO |
24,383 |
2026-02-27 |
|
| 14 |
Chin Moonhie |
Director |
20,096 |
2025-05-28 |
|
| 15 |
Greiner Stacy |
Director |
19,644 |
2025-05-28 |
|
| 16 |
Pang Thomas H |
Managing Dir.-proto Labs G.k. |
16,170 |
2013-02-19 |
|
| 17 |
Goodman John B |
Director |
14,106 |
2021-05-20 |
|
| 18 |
Tumelty John B. |
VP/gm & Managing Director-emea |
13,769 |
2017-11-30 |
|
| 19 |
Dietrick William M. |
Vice President of Marketing |
12,130 |
2013-02-19 |
|
| 20 |
Fein David M |
Chief Revenue Officer |
12,009 |
2019-02-15 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-02-25 |
Kermisch Marc |
Chief Technology & AI Officer |
RSU Award |
5,095 |
$62.63 |
$319.1K |
| 2026-02-25 |
Schumacher Daniel |
Chief Financial Officer |
RSU Award |
5,605 |
$62.63 |
$351.04K |
| 2026-02-25 |
Kenison Michael R. |
Chief Operations Officer |
RSU Award |
4,404 |
$62.63 |
$275.82K |
| 2026-02-25 |
Krishna Suresh |
President and CEO |
RSU Award |
24,383 |
$62.63 |
$1.53M |
| 2026-02-13 |
Schumacher Daniel |
Chief Financial Officer |
Tax Withholding of RSU |
1,267 |
$67.52 |
$85.55K |
| 2026-02-17 |
Kenison Michael R. |
Chief Operations Officer |
Informative Sell |
5,000 |
$66.46 |
$332.32K |
| 2026-02-13 |
Kenison Michael R. |
Chief Operations Officer |
Tax Withholding of RSU |
1,540 |
$67.52 |
$103.98K |
| 2026-02-11 |
Schumacher Daniel |
Chief Financial Officer |
Option Exercise (Sell) |
3,135 |
$33.84 |
$106.09K |
| 2026-02-10 |
Schumacher Daniel |
Chief Financial Officer |
Tax Withholding of RSU |
6,809 |
$53.18 |
$362.1K |
| 2026-02-10 |
Kenison Michael R. |
Chief Operations Officer |
Tax Withholding of RSU |
2,684 |
$53.18 |
$142.74K |
| 2026-02-06 |
Kenison Michael R. |
Chief Operations Officer |
Informative Sell |
2,500 |
$60.00 |
$150K |
| 2026-01-29 |
Schumacher Daniel |
Chief Financial Officer |
RSU Award |
20,686 |
- |
- |
| 2026-01-29 |
Kenison Michael R. |
Chief Operations Officer |
RSU Award |
8,128 |
- |
- |
| 2025-11-25 |
Kenison Michael R. |
Chief Operations Officer |
Option Exercise (Sell) |
3,048 |
$33.84 |
$103.14K |
| 2025-11-25 |
Kenison Michael R. |
Chief Operations Officer |
Option Exercise (Sell) |
3,048 |
$33.84 |
$103.14K |
| 2025-11-17 |
Kermisch Marc |
Chief Technology & AI Officer |
RSU Award |
3,718 |
- |
- |
| 2025-10-13 |
Kermisch Marc |
Officer |
Unknown |
- |
- |
- |
| 2025-08-05 |
Gawlick Rainer |
Director |
Informative Buy |
1,715 |
$43.79 |
$75.1K |
| 2025-08-04 |
Krishna Suresh |
President and CEO |
Informative Buy |
1,725 |
$43.51 |
$75.05K |
| 2025-05-23 |
Greiner Stacy |
Director |
RSU Award |
3,939 |
- |
- |
| 2025-05-23 |
Gawlick Rainer |
Director |
RSU Award |
3,939 |
- |
- |
| 2025-05-23 |
Black Archie C. |
Director |
RSU Award |
3,939 |
- |
- |
| 2025-05-23 |
Krishna Suresh |
President and CEO |
RSU Award |
16,296 |
- |
- |
| 2025-05-20 |
Krishna Suresh |
President and CEO |
Unknown |
- |
- |
- |
| 2025-05-23 |
Chin Moonhie |
Director |
RSU Award |
3,939 |
- |
- |
