PRLB Proto Labs

• None no insider bought on the open market
• $155K sold by 1 insider outside a trading plan
• $3.2M sold by 2 insiders under 10b5-1 plans

1. Insider
   Trade
   Value
   Traded, filed
2. Daniel Schumacher CFO
   Planned sale
   $477K 5,000 shares at $95.32 13% of stake
   Traded Sep 24 Filed Sep 25
   ↗
3. Daniel Schumacher CFO
   Planned sale
   $426K 5,000 shares at $85.21 11% of stake
   Traded Sep 16–17 Filed Sep 18
   ↗
4. Sven Wehrwein Director
   Sale
   $155K 2,000 shares at $77.28 5.8% of stake
   Traded Jun 2 Filed Jun 4
   ↗
5. Michael R. Kenison Chief Operations Officer
   Planned sale
   $1.6M 23,463 shares at $69.73 56% of stake
   Traded May 11–12 Filed May 13
   ↗
6. Michael R. Kenison Chief Operations Officer
   Planned sale
   $14K 200 shares at $70.00 0.7% of stake
   Traded May 7 Filed May 8
   ↗
7. Michael R. Kenison Chief Operations Officer
   Planned sale
   $332K 5,000 shares at $66.46 17% of stake
   Traded Feb 17 Filed Feb 18
   ↗
8. Michael R. Kenison Chief Operations Officer
   Planned sale
   $150K 2,500 shares at $60.00 6.8% of stake
   Traded Feb 6 Filed Feb 9
   ↗
9. Michael R. Kenison Chief Operations Officer
   Planned sale
   $153K 3,048 shares at $50.17 9.5% of stake
   Traded Nov 25, 2025 Filed Dec 3, 2025
   ↗

Also filed in the last 12 months, not counted as buying or selling: 14 stock grants, 9 option exercises, and 8 share withholdings for taxes.