Proto Labs Inc (PRLB) · Insider trading
What Proto Labs's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$0
0 insiders, 0 trades
Sold, 12 months
$3.34M
3 insiders, 95% under a plan
Net, 12 months
−$3.34M
bought less sold
Latest filing
2026-09-25
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Kenison Michael R.Chief Operations Officer | – | $2.29M | 9 | 2026-05-12 | 33,100 |
| Schumacher DanielChief Financial Officer | – | $902,629 | 3 | 2026-09-24 | 35,019 |
| Wehrwein SvenDirector | – | $154,555 | 2 | 2026-06-02 | 33,005 |
| Gawlick RainerDirector | $75,100 | – | 1 | 2025-08-05 | 43,883 |
| Krishna SureshDirector, President and CEO | $75,055 | – | 1 | 2025-08-04 | 18,021 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-24 | Schumacher DanielChief Financial Officer | Saleplan | 5,000 | 95.32 | $476,600 | 35,019 | Form 4 |
| 2026-09-17 | Schumacher DanielChief Financial Officer | Saleplan | 4,900 | 85.21 | $417,529 | 40,019 | Form 4 |
| 2026-09-16 | Schumacher DanielChief Financial Officer | Saleplan | 100 | 85.00 | $8,500 | 44,919 | Form 4 |
| 2026-06-02 | Wehrwein SvenDirector | Sale | 1,500 | 76.91 | $115,365 | 33,005 | Form 4 |
| 2026-06-02 | Wehrwein SvenDirector | Sale | 500 | 78.38 | $39,190 | 32,505 | Form 4 |
| 2026-05-12 | Kenison Michael R.Chief Operations Officer | Saleplan | 1,613 | 67.58 | $109,007 | 33,100 | Form 4 |
| 2026-05-12 | Kenison Michael R.Chief Operations Officer | Saleplan | 4,198 | 68.70 | $288,403 | 28,902 | Form 4 |
| 2026-05-12 | Kenison Michael R.Chief Operations Officer | Saleplan | 3,576 | 69.78 | $249,533 | 25,326 | Form 4 |
| 2026-05-12 | Kenison Michael R.Chief Operations Officer | Saleplan | 6,643 | 70.30 | $467,003 | 18,683 | Form 4 |
| 2026-05-11 | Kenison Michael R.Chief Operations Officer | Saleplan | 7,433 | 70.26 | $522,243 | 27,186 | Form 4 |
| 2026-05-07 | Kenison Michael R.Chief Operations Officer | Saleplan | 200 | 70.00 | $14,000 | 27,186 | Form 4 |
| 2026-02-17 | Kenison Michael R.Chief Operations Officer | Saleplan | 5,000 | 66.46 | $332,300 | 25,302 | Form 4 |
| 2026-02-06 | Kenison Michael R.Chief Operations Officer | Saleplan | 2,500 | 60.00 | $150,000 | 34,526 | Form 4 |
| 2025-11-25 | Kenison Michael R.Chief Operations Officer | Saleplan | 3,048 | 50.17 | $152,918 | 28,898 | Form 4/A |
| 2025-08-05 | Gawlick RainerDirector | Buy | 1,715 | 43.79 | $75,100 | 43,883 | Form 4 |
| 2025-08-04 | Krishna SureshDirector, President and CEO | Buy | 1,725 | 43.51 | $75,055 | 18,021 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
29 × grant or award17 × shares withheld for tax9 × option exercise
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-05-23 | Krishna SureshDirector, President and CEO | Shares withheld for tax F | −1,247 | 71.36 | 30,147 | Form 4 |
| 2026-05-20 | Parlange BernardoChief Commercial Officer | Grant or award A | +2,109 | – | 2,109 | Form 4 |
| 2026-05-20 | Schumacher DanielChief Financial Officer | Shares withheld for tax F | −255 | 71.13 | 45,019 | Form 4 |
| 2026-05-19 | Krantz Donald GDirector | Grant or award A | +2,210 | – | 26,863 | Form 4 |
| 2026-05-19 | Wehrwein SvenDirector | Grant or award A | +2,210 | – | 34,505 | Form 4 |
| 2026-05-19 | Gawlick RainerDirector | Grant or award A | +2,210 | – | 46,093 | Form 4 |
| 2026-05-19 | Chin MoonhieDirector | Grant or award A | +2,210 | – | 22,306 | Form 4 |
| 2026-05-19 | Chand SujeetDirector | Grant or award A | +2,210 | – | 26,863 | Form 4 |
| 2026-05-19 | Black Archie C.Director | Grant or award A | +2,210 | – | 28,428 | Form 4 |
| 2026-05-12 | Kenison Michael R.Chief Operations Officer | Option exercise M | +1,928 | 33.84 | 29,114 | Form 4 |
| 2026-05-12 | Kenison Michael R.Chief Operations Officer | Option exercise M | +1,557 | 39.61 | 30,671 | Form 4 |
| 2026-05-12 | Kenison Michael R.Chief Operations Officer | Option exercise M | +4,042 | 59.40 | 34,713 | Form 4 |
| 2026-05-11 | Kenison Michael R.Chief Operations Officer | Option exercise M | +3,756 | 33.84 | 30,942 | Form 4 |
| 2026-05-11 | Kenison Michael R.Chief Operations Officer | Option exercise M | +3,677 | 33.52 | 34,619 | Form 4 |
| 2026-05-07 | Kenison Michael R.Chief Operations Officer | Option exercise M | +100 | 33.84 | 27,286 | Form 4 |
| 2026-05-07 | Kenison Michael R.Chief Operations Officer | Option exercise M | +100 | 33.52 | 27,386 | Form 4 |
| 2026-02-25 | Kermisch MarcChief Technology & AI Officer | Grant or award A | +2,795 | – | 6,513 | Form 4 |
| 2026-02-25 | Kenison Michael R.Chief Operations Officer | Grant or award A | +2,415 | – | 27,717 | Form 4 |
| 2026-02-25 | Kenison Michael R.Chief Operations Officer | Shares withheld for tax F | −531 | 62.63 | 27,186 | Form 4 |
| 2026-02-25 | Schumacher DanielChief Financial Officer | Grant or award A | +3,074 | – | 45,778 | Form 4 |
| 2026-02-25 | Schumacher DanielChief Financial Officer | Shares withheld for tax F | −504 | 62.63 | 45,274 | Form 4 |
| 2026-02-25 | Krishna SureshDirector, President and CEO | Grant or award A | +13,373 | – | 31,394 | Form 4 |
| 2026-02-13 | Kenison Michael R.Chief Operations Officer | Shares withheld for tax F | −1,540 | 67.52 | 30,302 | Form 4 |
| 2026-02-13 | Schumacher DanielChief Financial Officer | Shares withheld for tax F | −1,267 | 67.52 | 42,704 | Form 4 |
| 2026-02-11 | Schumacher DanielChief Financial Officer | Option exercise M | +3,135 | 33.84 | 43,971 | Form 4 |
| 2026-02-10 | Kenison Michael R.Chief Operations Officer | Shares withheld for tax F | −2,684 | 53.18 | 31,842 | Form 4 |
| 2026-02-10 | Schumacher DanielChief Financial Officer | Shares withheld for tax F | −6,809 | 53.18 | 40,836 | Form 4 |
| 2026-01-29 | Schumacher DanielChief Financial Officer | Grant or award A | +20,686 | – | 47,645 | Form 4 |
| 2026-01-29 | Kenison Michael R.Chief Operations Officer | Grant or award A | +8,128 | – | 37,026 | Form 4 |
| 2025-11-25 | Kenison Michael R.Chief Operations Officer | Option exercise M | +3,048 | 33.84 | 31,946 | Form 4/A |
| 2025-11-17 | Kermisch MarcChief Technology & AI Officer | Grant or award A | +3,718 | – | 3,718 | Form 4 |
| 2025-05-23 | Krishna SureshDirector, President and CEO | Grant or award A | +16,296 | – | 16,296 | Form 4 |
| 2025-05-23 | Krantz Donald GDirector | Grant or award A | +3,939 | – | 24,653 | Form 4 |
| 2025-05-23 | Wehrwein SvenDirector | Grant or award A | +3,939 | – | 32,295 | Form 4 |
| 2025-05-23 | Greiner StacyDirector | Grant or award A | +3,939 | – | 19,644 | Form 4 |
| 2025-05-23 | Chand SujeetDirector | Grant or award A | +3,939 | – | 24,653 | Form 4 |
| 2025-05-23 | Chin MoonhieDirector | Grant or award A | +3,939 | – | 20,096 | Form 4 |
| 2025-05-23 | Gawlick RainerDirector | Grant or award A | +3,939 | – | 42,168 | Form 4 |
| 2025-05-23 | Black Archie C.Director | Grant or award A | +3,939 | – | 26,218 | Form 4 |
| 2025-05-20 | Kenison Michael R.Chief Operations Officer | Shares withheld for tax F | −204 | 40.87 | 28,841 | Form 4 |
| 2025-05-20 | Schumacher DanielChief Financial Officer | Shares withheld for tax F | −305 | 40.87 | 26,959 | Form 4 |
| 2025-02-25 | Bodor RobertPresident and CEO | Grant or award A | +18,935 | – | 108,579 | Form 4 |
| 2025-02-25 | Ryaboy OlegChief Technology Officer | Grant or award A | +7,574 | – | 35,305 | Form 4 |
| 2025-02-25 | Kenison Michael R.Chief Operations Officer | Grant or award A | +6,943 | – | 28,982 | Form 4 |
| 2025-02-25 | Schumacher DanielChief Financial Officer | Grant or award A | +4,419 | – | 27,264 | Form 4 |
| 2025-02-13 | Ryaboy OlegChief Technology Officer | Shares withheld for tax F | −2,461 | 45.03 | 27,731 | Form 4 |
| 2025-02-13 | Schumacher DanielChief Financial Officer | Grant or award A | +3,077 | – | 25,207 | Form 4 |
| 2025-02-13 | Schumacher DanielChief Financial Officer | Shares withheld for tax F | −1,098 | 45.03 | 24,109 | Form 4 |
| 2025-02-13 | Schumacher DanielChief Financial Officer | Shares withheld for tax F | −1,264 | 45.03 | 22,845 | Form 4 |
| 2025-02-13 | Kenison Michael R.Chief Operations Officer | Grant or award A | +1,894 | – | 24,315 | Form 4 |
| 2025-02-13 | Kenison Michael R.Chief Operations Officer | Shares withheld for tax F | −580 | 45.03 | 23,735 | Form 4 |
| 2025-02-13 | Kenison Michael R.Chief Operations Officer | Shares withheld for tax F | −1,696 | 45.03 | 22,039 | Form 4 |
| 2025-02-13 | Bodor RobertPresident and CEO | Grant or award A | +23,570 | – | 104,448 | Form 4 |
| 2025-02-13 | Bodor RobertPresident and CEO | Shares withheld for tax F | −7,536 | 45.03 | 96,912 | Form 4 |
| 2025-02-13 | Bodor RobertPresident and CEO | Shares withheld for tax F | −7,268 | 45.03 | 89,644 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.