Extreme Networks Inc
EXTR- Exchange
- Nasdaq
- Industry
- Computer Communications Equipment
- SEC CIK
- 0001078271
In the last 90 days, Extreme Networks Inc insiders filed 0 open-market purchases and 5 sales; 342 institutions reported holding it in 13F filings for Q2 2026, worth $4.13B in total; Maverick Capital is the only superinvestor holding it.
Holders of 5% or more of EXTR
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Extreme Networks Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Vanguard Portfolio Management LLC | 13G | 10.00%13.4M shares | New | Mar 5, 20261 filing | Mar 5, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
3 Schedule 13D and 13G filings on Extreme Networks Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 26, 20261:51 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −14.16 ppfrom 14.16%Below 5% | Mar 13, 2026 | SEC |
| Mar 5, 20261:49 PM ET | Vanguard Portfolio Management LLC | 13G | 10.00%13.4M shares | New | Feb 27, 2026 | SEC |
| Jul 29, 20251:12 PM ET | Vanguard Group Inc | 13G/A | 14.16%18.9M shares | – | Jun 30, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Extreme Networks Inc shares.
No Form 144 notices for Extreme Networks Inc are on file.