Proto Labs, Inc. 

Reconciliation of GAAP to Non-GAAP Guidance 

(Unaudited)

    
 Q2 2026 Outlook
 Low High
GAAP diluted net income per share$0.29 $0.37
Add back:   
Stock-based compensation expense 0.16  0.16
Amortization expense 0.03  0.03
Restructuring and transformation costs 0.02  0.02
Unrealized (gain) loss on foreign currency 0.00  0.00
Total adjustments 0.21  0.21
Non-GAAP diluted net income per share$0.50 $0.58