MICHAEL R KENISON plan to sell securities of PROTO LABS, INC. under Form 144

MICHAEL R KENISON filed Form 144 to notify SEC of plan to sell 16030 units of PROTO LABS, INC. securities around 2026-05-12, with aggregate market value of $1,113,915.08. The total outstanding units is 23794045.0. The amount planned to be sold represents 0.07% of total outstanding units; Recent transactions in past 3 months include: On 05/11/2026, sold 7433 units for $522011.00; On 05/07/2026, sold 200 units for $14000.00; On 02/17/2026, sold 5000 units for $332315.00;