X0508 4 2024-12-02 0001078271 EXTREME NETWORKS INC EXTR 0001179945 MEYERCORD EDWARD 2121 RDU CENTER DR. MORRISVILLE NC 27560 1 1 PRESIDENT AND CEO 1 Common Stock 2024-12-02 4 M 0 35725 6.40 A 1514666 D Common Stock 2024-12-02 4 S 0 28235 17.1259 D 1486431 D Common Stock 2024-12-02 4 S 0 7490 17.5223 D 1478941 D Non-Qualified Stock Option (right to buy) 6.40 2024-12-02 4 M 0 35725 0 D 2021-06-25 2025-08-29 Common Stock 35725 73528 D Adoption date of referenced 10b5-1(c) plan is: 02-22-2024 The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.51 to $17.50 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. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.51 to $17.55 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. This Performance Stock Option Grant was achieved after the Company's Common Stock closing price exceeded $10.00 for 30 consecutive trading days on June 25, 2021. Once earned, the shares vest as to 1/3 subject thereto on August 31, 2019 and 1/12 of the shares thereto on each quarterly anniversary thereafter with any shares that would have already been vested in accordance with the time based vesting schedule vesting immediately when the PSOs were earned. /s/ Katayoun ("Katy") Motiey, Power of Attorney for Ed Meyercord 2024-12-03