X0306 4 2023-02-15 0001078271 EXTREME NETWORKS INC EXTR 0001404174 Vitalone Joseph A 2121 RDU CENTER DR. MORRISVILLE NC 27560 1 Chief Revenue Officer Common Stock 2023-02-15 4 M 0 6253 0 A 52637 D Common Stock 2023-02-15 4 F 0 2461 19.08 D 50176 D Restricted Stock Units 0 2023-02-15 4 M 0 6253 0 D 2022-08-15 2024-08-15 Common Stock 6253 37519 D An additional 1,294 shares are included in this total, reflecting non-reportable purchase of 1,294 shares in connection with the Company's Employee Stock Purchase Plan (ESPP). Represents shares withheld from the released share award for the payment of applicable income and payroll withholding taxes due on release. This Time-based RSU award vests from the original grant date as to 1/3 on the one year anniversary and 1/12 each quarter thereafter. /s/ Katayoun "Katy" Motiey, Power of Attorney for Joseph A. Vitalone 2023-02-17