Donald G. Krantz

Companies

• Proto LabsBoard member May 22, 2017 to now¹
• Proto LabsExecutive VP of Technology Feb 11, 2015 to Mar 16, 2016²
• Proto LabsChief operating officer Feb 23, 2012 to Feb 18, 2014³

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• Proto Labs PRLB26,863 shares⁴$2.3M at $86.69May 19, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• May 19, 2026Granted 2,210 shares of Proto Labs⁴
• May 23, 2025Granted 3,939 shares of Proto Labs⁵
• May 23, 2024Granted 4,701 shares of Proto Labs⁶
• May 17, 2023Granted 4,513 shares of Proto Labs⁷
• Aug 30, 2022Granted 3,236 shares of Proto Labs⁸
• May 18, 2022Granted 3,236 shares of Proto Labs⁹