Richardson Electronics Strategic Business Overview

Healthcare Update • • Healthcare Highlights Richardson Healthcare sold a record number of tubes during Q3 FY22, led by increased tube sales in China. Additional tubes will drive revenue growth and margin improvement as factory utilization rate improves Continued to expand the number of countries in which Richardson's tubes are registered Healthcare Sales ($ in 000s) Third Quarter Sales Up 7.4% YoY $3,500 $3,000 $2,500 $2,000 $1,500 $1,000 $500 $- Q3 FY21 Q4 FY21 Q1 FY22 Q2 FY22 Q3 FY22 Investor Presentation | © Richardson Electronics, Ltd. Richardson Electronics 16

View entire presentation