Extreme Networks, Inc.
US ˙ NasdaqGS ˙ US30226D1063

SecurityEXTR / Extreme Networks, Inc.
InstitutionD. E. Shaw & Co., Inc.
ManagerDE Shaw
Latest Disclosed Ownership1,470,448 shares
Latest Disclosed Value $ 22,174,356
D. E. Shaw & Co., Inc. reports 2.62% increase in ownership of EXTR / Extreme Networks, Inc.

On May 15, 2026 - D. E. Shaw & Co., Inc. filed a 13F-HR form disclosing ownership of 1,470,448 shares of Extreme Networks, Inc. (US:EXTR) valued at $22,174,356 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,432,905 shares of Extreme Networks, Inc.. This represents a change in shares of 2.62% during the quarter. The current value of the position is $42,334,198 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F EXTREME NETWORKS COM 30226D106 1,470,448 37,543 2.62 22,174 -7.05 0.0133
2026-02-17 2025-12-31 13F EXTREME NETWORKS COM 30226D106 1,432,905 660,303 85.46 23,858 49.54 0.0131
2025-11-14 2025-09-30 13F EXTREME NETWORKS COM 30226D106 772,602 193,553 33.43 15,954 53.51 0.0090
2025-08-14 2025-06-30 13F EXTREME NETWORKS COM 30226D106 579,049 54,994 10.49 10,394 49.91 0.0074
2025-05-15 2025-03-31 13F EXTREME NETWORKS COM 30226D106 524,055 -68,606 -11.58 6,933 -30.12 0.0062
2025-02-14 2024-12-31 13F EXTREME NETWORKS COM 30226D106 592,661 -247,307 -29.44 9,921 -21.41 0.0073
2024-11-14 2024-09-30 13F EXTREME NETWORKS COM 30226D106 839,968 -246,981 -22.72 12,625 -13.65 0.0108
2024-08-14 2024-06-30 13F EXTREME NETWORKS COM 30226D106 1,086,949 42,692 4.09 14,619 21.32 0.0137
2024-05-15 2024-03-31 13F EXTREME NETWORKS COM 30226D106 1,044,257 666,902 176.73 12,051 81.04 0.0103
2024-02-14 2023-12-31 13F EXTREME NETWORKS COM 30226D106 377,355 -216,015 -36.40 6,657 -53.67 0.0058
2023-11-14 2023-09-30 13F EXTREME NETWORKS COM 30226D106 593,370 -142,395 -19.35 14,365 -25.05 0.0150
2023-08-14 2023-06-30 13F EXTREME NETWORKS COM 30226D106 735,765 297,764 67.98 19,167 128.88 0.0196
2023-05-15 2023-03-31 13F EXTREME NETWORKS COM 30226D106 438,001 155,064 54.81 8,375 61.66 0.0090
2023-02-14 2022-12-31 13F EXTREME NETWORKS COM 30226D106 282,937 -17,126 -5.71 5,181 32.08 0.0057
2022-11-14 2022-09-30 13F EXTREME NETWORKS COM 30226D106 300,063 13,918 4.86 3,922 53.68 0.0047
2022-08-15 2022-06-30 13F EXTREME NETWORKS COM 30226D106 286,145 -30,813 -9.72 2,552 -34.06 0.0030
2022-05-16 2022-03-31 13F EXTREME NETWORKS COM 30226D106 316,958 -339,057 -51.68 3,870 -62.42 0.0036
2022-02-14 2021-12-31 13F EXTREME NETWORKS COM 30226D106 656,015 -438,494 -40.06 10,299 -4.47 0.0085
2021-11-15 2021-09-30 13F EXTREME NETWORKS COM 30226D106 1,094,509 -313,297 -22.25 10,781 -31.38 0.0097
2021-08-16 2021-06-30 13F EXTREME NETWORKS COM 30226D106 1,407,806 -1,003,051 -41.61 15,712 -25.52 0.0136
2021-05-17 2021-03-31 13F EXTREME NETWORKS COM 30226D106 2,410,857 -1,710,141 -41.50 21,095 -25.70 0.0204
2021-02-16 2020-12-31 13F EXTREME NETWORKS COM 30226D106 4,120,998 -560,789 -11.98 28,393 50.87 0.0254
2020-11-16 2020-09-30 13F EXTREME NETWORKS COM 30226D106 4,681,787 -363,825 -7.21 18,820 -14.06 0.0193
2020-08-14 2020-06-30 13F EXTREME NETWORKS COM 30226D106 5,045,612 1,721,575 51.79 21,898 113.20 0.0261
2020-05-15 2020-03-31 13F EXTREME NETWORKS COM 30226D106 3,324,037 583,263 21.28 10,271 -49.15 0.0160
2020-02-14 2019-12-31 13F EXTREME NETWORKS COM 30226D106 2,740,774 -1,426,403 -34.23 20,200 -33.37 0.0231
2019-11-14 2019-09-30 13F EXTREME NETWORKS COM 30226D106 4,167,177 -586,907 -12.35 30,316 -1.44 0.0373
2019-08-14 2019-06-30 13F EXTREME NETWORKS COM 30226D106 4,754,084 1,468,606 44.70 30,759 24.99 0.0384
2019-05-15 2019-03-31 13F EXTREME NETWORKS COM 30226D106 3,285,478 1,789,274 119.59 24,609 169.63 0.0318
2019-02-14 2018-12-31 13F EXTREME NETWORKS COM 30226D106 1,496,204 699,754 87.86 9,127 109.10 0.0126
2018-11-14 2018-09-30 13F EXTREME NETWORKS COM 30226D106 796,450 700,185 727.35 4,365 469.84 0.0052
2018-08-14 2018-06-30 13F EXTREME NETWORKS COM 30226D106 96,265 -99,981 -50.95 766 -64.73 0.0010
2018-05-15 2018-03-31 13F EXTREME NETWORKS COM 30226D106 196,246 -1,115,916 -85.04 2,172 -86.78 0.0030
2018-02-14 2017-12-31 13F EXTREME NETWORKS COM 30226D106 1,312,162 -157,784 -10.73 16,429 -6.00 0.0226
2017-11-14 2017-09-30 13F EXTREME NETWORKS COM 30226D106 1,469,946 514,381 53.83 17,478 98.39 0.0269
2017-08-14 2017-06-30 13F EXTREME NETWORKS COM 30226D106 955,565 343,689 56.17 8,810 91.73 0.0146
2017-05-15 2017-03-31 13F EXTREME NETWORKS COM 30226D106 611,876 280,689 84.75 4,595 175.81 0.0081
2017-02-14 2016-12-31 13F EXTREME NETWORKS COM 30226D106 331,187 72,316 27.94 1,666 43.25 0.0028
2016-11-14 2016-09-30 13F EXTREME NETWORKS COM 30226D106 258,871 158,564 158.08 1,163 242.06 0.0021
2016-08-15 2016-06-30 13F EXTREME NETWORKS COM 30226D106 100,307 -26,481 -20.89 340 -13.71 0.0006
2016-05-16 2016-03-31 13F EXTREME NETWORKS COM 30226D106 126,788 -327,167 -72.07 394 -78.73 0.0007
2016-02-16 2015-12-31 13F EXTREME NETWORKS COM 30226D106 453,955 279,860 160.75 1,852 216.58 0.0028
2015-11-16 2015-09-30 13F EXTREME NETWORKS COM 30226D106 174,095 -409,420 -70.16 585 -82.72 0.0009
2014-05-15 2014-03-31 13F EXTREME NETWORKS COM 30226D106 583,515 -164,476 -21.99 3,385 -35.35 0.0048
2014-02-14 2013-12-31 13F EXTREME NETWORKS COM 30226D106 747,991 360,972 93.27 5,236 159.21 0.0071
2013-11-20 2013-09-30 13F/A-1 EXTREME NETWORKS COM 30226D106 387,019 387,019 2,020 0.0032
2013-11-14 2013-09-30 13F EXTREME NETWORKS COM 30226D106 387,019 2,020 0.0032
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.