Proto Labs Inc (PRLB)
$79.74-$0.36 (-0.45%) Today
Latest PRLB Insider Trades
Sven Wehrwein - DirectorOpen-market sale
Sven Wehrwein - DirectorSven Wehrwein - DirectorProto Labs Inc is an on-demand manufacturer of custom parts for prototyping and short-run production. The company offers developers and engineers quick-turn production services to reduce the time to market. The Lab uses injection molding, computer numerical control machining, and 3-D printing, and sheet metal to manufacture custom parts for its clients. The company services clients' needs for prototype solutions, parts for testing procedures, bridge production capabilities during disruptions in manufacturing processes, limited-quantity requests, and end-of-life production support. Geographically, a majority of the company's revenue is derived from the United States and the rest from Europe.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 2 | 2,000 | $155K |
29 Form 4 filings on record, the earliest from May 23, 2025, newest first.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sven Wehrwein - Director | Open-market sale | Common Stock | 500 | $78.38 | $39K | |
| Sven Wehrwein - Director | Open-market sale | Common Stock | 1,500 | $76.91 | $115K | |
 Suresh Krishna - Officer | Tax withholding / forfeiture | Common Stock | 1,247 | $71.36 | $89K | |
| Daniel Schumacher - Officer | Tax withholding / forfeiture | Common Stock | 255 | $71.13 | $18K | |
| Bernardo Parlange - Officer | Grant or award | Common Stock | 2,109 | $0.00 | - | |
| Bernardo Parlange - Officer | Grant or award | Employee Stock Option (right to buy) | 3,789 | $0.00 | - | |
| Archie C. Black - Director | Grant or award | Common Stock | 2,210 | $0.00 | - | |
| Sujeet Chand - Director | Grant or award | Common Stock | 2,210 | $0.00 | - | |
| Moonhie Chin - Director | Grant or award | Common Stock | 2,210 | $0.00 | - | |
 Rainer Gawlick - Director | Grant or award | Common Stock | 2,210 | $0.00 | - | |
| Sven Wehrwein - Director | Grant or award | Common Stock | 2,210 | $0.00 | - | |
| Donald G. Krantz - Director | Grant or award | Common Stock | 2,210 | $0.00 | - | |
| Michael R. Kenison - Officer | Option exercise | Common Stock | 1,928 | $33.84 | $65K | |
| Michael R. Kenison - Officer | Option exercise | Common Stock | 1,557 | $39.61 | $62K | |
| Michael R. Kenison - Officer | Option exercise | Common Stock | 4,042 | $59.40 | $240K | |
| Michael R. Kenison - Officer | Option exercise | Common Stock | 3,756 | $33.84 | $127K | |
| Michael R. Kenison - Officer | Option exercise | Common Stock | 3,677 | $33.52 | $123K | |
| Michael R. Kenison - Officer | Open-market sale | Common Stock | 7,433 | $70.26 | $522K | |
| Michael R. Kenison - Officer | Open-market sale | Common Stock | 1,613 | $67.58 | $109K | |
| Michael R. Kenison - Officer | Open-market sale | Common Stock | 4,198 | $68.70 | $288K | |
| Michael R. Kenison - Officer | Open-market sale | Common Stock | 3,576 | $69.78 | $250K | |
| Michael R. Kenison - Officer | Open-market sale | Common Stock | 6,643 | $70.30 | $467K | |
| Michael R. Kenison - Officer | Option exercise | Employee Stock Option (right to buy) | 3,756 | $0.00 | - | |
| Michael R. Kenison - Officer | Option exercise | Employee Stock Option (right to buy) | 3,677 | $0.00 | - | |
| Michael R. Kenison - Officer | Option exercise | Employee Stock Option (right to buy) | 1,928 | $0.00 | - | |
| Michael R. Kenison - Officer | Option exercise | Employee Stock Option (right to buy) | 1,557 | $0.00 | - | |
| Michael R. Kenison - Officer | Option exercise | Employee Stock Option (right to buy) | 4,042 | $0.00 | - | |
| Michael R. Kenison - Officer | Option exercise | Common Stock | 100 | $33.84 | $3K | |
| Michael R. Kenison - Officer | Option exercise | Common Stock | 100 | $33.52 | $3K | |
| Michael R. Kenison - Officer | Open-market sale | Common Stock | 200 | $70.00 | $14K | |
| Michael R. Kenison - Officer | Option exercise | Employee Stock Option (right to buy) | 100 | $0.00 | - | |
| Michael R. Kenison - Officer | Option exercise | Employee Stock Option (right to buy) | 100 | $0.00 | - | |
| Suresh Krishna - Officer | Grant or award | Common Stock | 13,373 | $0.00 | - | |
| Suresh Krishna - Officer | Grant or award | Employee Stock Option (right to buy) | 24,383 | $0.00 | - | |
| Daniel Schumacher - Officer | Tax withholding / forfeiture | Common Stock | 504 | $62.63 | $32K | |
| Daniel Schumacher - Officer | Grant or award | Common Stock | 3,074 | $0.00 | - | |
| Daniel Schumacher - Officer | Grant or award | Employee Stock Option (right to buy) | 5,605 | $0.00 | - | |
| Michael R. Kenison - Officer | Tax withholding / forfeiture | Common Stock | 531 | $62.63 | $33K | |
| Michael R. Kenison - Officer | Grant or award | Common Stock | 2,415 | $0.00 | - | |
| Michael R. Kenison - Officer | Grant or award | Employee Stock Option (right to buy) | 4,404 | $0.00 | - | |
| Marc Kermisch - Officer | Grant or award | Common Stock | 2,795 | $0.00 | - | |
| Marc Kermisch - Officer | Grant or award | Employee Stock Option (right to buy) | 5,095 | $0.00 | - | |
| Daniel Schumacher - Officer | Tax withholding / forfeiture | Common Stock | 1,267 | $67.52 | $86K | |
| Michael R. Kenison - Officer | Tax withholding / forfeiture | Common Stock | 1,540 | $67.52 | $104K | |
| Michael R. Kenison - Officer | Open-market sale | Common Stock | 5,000 | $66.46 | $332K | |
| Michael R. Kenison - Officer | Tax withholding / forfeiture | Common Stock | 2,684 | $53.18 | $143K | |
| Daniel Schumacher - Officer | Tax withholding / forfeiture | Common Stock | 6,809 | $53.18 | $362K | |
| Daniel Schumacher - Officer | Option exercise | Common Stock | 3,135 | $33.84 | $106K | |
| Daniel Schumacher - Officer | Option exercise | Employee Stock Option (right to buy) | 3,135 | $0.00 | - | |
| Michael R. Kenison - Officer | Open-market sale | Common Stock | 2,500 | $60.00 | $150K | |
| Michael R. Kenison - Officer | Grant or award | Common Stock | 8,128 | $0.00 | - | |
| Daniel Schumacher - Officer | Grant or award | Common Stock | 20,686 | $0.00 | - | |
| Michael R. Kenison - Officer | Option exercise | Common Stock | 3,048 | $33.84 | $103K | |
| Michael R. Kenison - Officer | Open-market sale | Common Stock | 3,048 | $50.17 | $153K | |
| Michael R. Kenison - Officer | Option exercise | Employee Stock Option (right to buy) | 3,048 | $0.00 | - | |
| Marc Kermisch - Officer | Grant or award | Common Stock | 3,718 | $0.00 | - | |
| Marc Kermisch - Officer | Grant or award | Employee Stock Option (right to buy) | 6,818 | $0.00 | - | |
| Rainer Gawlick - Director | Open-market purchase | Common Stock | 1,715 | $43.79 | $75K | |
| Suresh Krishna - Officer | Open-market purchase | Common Stock | 1,725 | $43.51 | $75K | |
| Sven Wehrwein - Director | Grant or award | Common Stock | 3,939 | $0.00 | - | |
| Donald G. Krantz - Director | Grant or award | Common Stock | 3,939 | $0.00 | - |
A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| MICHAEL R KENISON | Former Officer | 10,753 | $948K | View on EDGAR | |
| - | - | - | - | View on EDGAR | |
| - | - | - | - | View on EDGAR |
Proto Labs Inc (PRLB) had 1 insider filing in the last 90 days, with the most recent on 2026-06-04. The full record for PRLB runs to 29 Form 4 filings, the earliest from 2025-05-23. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
No insider purchases of PRLB were filed in the last 90 days. 2 purchases are on record for this company.
2 insider sales of PRLB were filed in the last 90 days, totaling $155K.
This page tracks PRLB Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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