X0306 4 2022-08-29 0001078271 EXTREME NETWORKS INC EXTR 0001404174 Vitalone Joseph A 2121 RDU CENTER DR. MORRISVILLE NC 27560 1 Chief Revenue Officer Common Stock 2022-08-29 4 S 0 35372 15.0015 D 41298 D Transaction pursuant to the Reporting Person's 10b5-1 Plan. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.00 to $15.05 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. /s/ Katayoun "Katy" Motiey, Power of Attorney for Joseph A. Vitalone 2022-08-30