PROTO LABS INC

Ticker: PRLB CUSIP: 743713109 Class: EQTY

Cornerstone Investment Partners, LLC's Holding History (CIK: 0001328062)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025
Shares 4,045 Value ($000) $205 Avg Close $51.15 Range $45.10 - $55.90
Q3 2025
Shares 4,043 Value ($000) $202 Avg Close $45.82 Range $38.48 - $51.96