SEC filings · customer concentration · EXTR

Extreme Networks's major customers

Westcon accounted for 18% of Extreme Networks's revenue in FY 2026, about the same as 18% a year earlier.

3major customers now
49%of revenue from them
0listed suppliers depending on it
2016–2026years covered
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Major customers of Extreme Networks

Customers that Extreme Networks named in its annual report as 10% or more of revenue. A missing year means the customer was below that line or not named.

CustomerShare of revenueChange vs prior yearHistoryLatest filing
Westcon18%from 18%FY 2016: 13%FY 2017: 12%FY 2018: 13%FY 2019: 12%FY 2020: 13%FY 2021: 16%FY 2022: 18%FY 2023: 20%FY 2024: 16%FY 2025: 18%FY 2026: 18%11 yearsFY 2026 · filed 17 Aug 2026
Jenne16%from 18%FY 2016: 14%FY 2017: 15%FY 2018: 13%FY 2019: 17%FY 2020: 15%FY 2021: 18%FY 2022: 16%FY 2023: 15%FY 2024: 22%FY 2025: 18%FY 2026: 16%11 yearsFY 2026 · filed 17 Aug 2026
TD SynnexSNX15%from 18%FY 2020: 18%FY 2021: 19%FY 2022: 20%FY 2023: 18%FY 2024: 21%FY 2025: 18%FY 2026: 15%7 yearsFY 2026 · filed 17 Aug 2026

Formerly disclosed

CustomerShare of revenueChange vs prior yearHistoryLatest filing
Tech Data19%last FY 2021FY 2016: 17%FY 2017: 16%FY 2018: 14%FY 2019: 18%FY 2020: 18%FY 2021: 19%6 yearsFY 2021 · filed 27 Aug 2021

About this data

US-listed companies must disclose revenue from any single customer that reaches 10% of their total (ASC 280). ShadowGraph reads these disclosures from the XBRL data of every 10-K and 20-F we scan, keeps one value per fiscal year (restatements replace earlier values) and links each number to its filing. Companies that describe a customer only as "Customer A" are not listed by name. Figures are as reported; nothing here is investment advice.

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