Extreme Networks, Inc.
US ˙ NasdaqGS ˙ US30226D1063

SecurityEXTR / Extreme Networks, Inc.
InstitutionAmalgamated Bank
Latest Disclosed Ownership38,584 shares
Latest Disclosed Value $ 582
Amalgamated Bank reports 0.56% increase in ownership of EXTR / Extreme Networks, Inc.

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 38,584 shares of Extreme Networks, Inc. (US:EXTR) valued at $581,847 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 38,369 shares of Extreme Networks, Inc.. The current value of the position is $1,110,833 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)
2026-05-08 2026-03-31 13F EXTREME NETWORKS COM 30226D106 38,584 215 0.56 1 0.0045
2026-02-05 2025-12-31 13F EXTREME NETWORKS COM 30226D106 38,369 585 1.55 1 0.0046
2025-10-29 2025-09-30 13F EXTREME NETWORKS COM 30226D106 37,784 -4 -0.01 1 0.0056
2025-08-04 2025-06-30 13F EXTREME NETWORKS COM 30226D106 37,788 0 0.00 1 0.0052
2025-04-25 2025-03-31 13F EXTREME NETWORKS COM 30226D106 37,788 -859 -2.22 0 0.0043
2025-02-04 2024-12-31 13F EXTREME NETWORKS COM 30226D106 38,647 557 1.46 1 0.0053
2024-10-30 2024-09-30 13F EXTREME NETWORKS COM 30226D106 38,090 -1,371 -3.47 1 0.0047
2024-08-12 2024-06-30 13F EXTREME NETWORKS COM 30226D106 39,461 -1,342 -3.29 1 0.0045
2024-04-23 2024-03-31 13F EXTREME NETWORKS COM 30226D106 40,803 -15,318 -27.29 0 0.0040
2024-02-06 2023-12-31 13F EXTREME NETWORKS COM 30226D106 56,121 -557 -0.98 1 -100.00 0.0079
2023-11-08 2023-09-30 13F EXTREME NETWORKS COM 30226D106 56,678 -1,735 -2.97 1 0.00 0.0117
2023-08-11 2023-06-30 13F EXTREME NETWORKS COM 30226D106 58,413 -166 -0.28 2 0.00 0.0123
2023-05-02 2023-03-31 13F EXTREME NETWORKS COM 30226D106 58,579 -5,200 -8.15 1 0.00 0.0095
2023-02-10 2022-12-31 13F EXTREME NETWORKS COM 30226D106 63,779 1,520 2.44 1 -99.88 0.0104
2022-11-09 2022-09-30 13F EXTREME NETWORKS COM 30226D106 62,259 -119 -0.19 814 46.40 0.0079
2022-08-15 2022-06-30 13F EXTREME NETWORKS COM 30226D106 62,378 -963 -1.52 556 -28.07 0.0052
2022-08-25 2022-03-31 13F/A-1 EXTREME NETWORKS COM 30226D106 63,341 -3,222 -4.84 773 -26.03 0.0060
2022-06-30 2022-03-31 13F EXTREME NETWORKS COM 30226D106 63,341 -3,222 773 0.0061
2022-02-15 2021-12-31 13F/A-1 EXTREME NETWORKS COM 30226D106 66,563 848 1.29 1,045 61.51 0.0077
2022-02-15 2021-12-31 13F EXTREME NETWORKS COM 30226D106 66,563 848 1,045 0.0077
2021-10-29 2021-09-30 13F EXTREME NETWORKS COM 30226D106 65,715 -1,282 -1.91 647 -13.50 0.0055
2021-08-16 2021-06-30 13F EXTREME NETWORKS COM 30226D106 66,997 48,734 266.85 748 367.50 0.0060
2021-05-13 2021-03-31 13F EXTREME NETWORKS COM 30226D106 18,263 -1,712 -8.57 160 15.94 0.0060
2021-02-12 2020-12-31 13F EXTREME NETWORKS COM 30226D106 19,975 546 2.81 138 76.92 0.0052
2020-10-30 2020-09-30 13F EXTREME NETWORKS COM 30226D106 19,429 -191 -0.97 78 -8.24 0.0034
2020-08-10 2020-06-30 13F EXTREME NETWORKS COM 30226D106 19,620 -2,860 -12.72 85 23.19 0.0039
2020-05-13 2020-03-31 13F EXTREME NETWORKS COM 30226D106 22,480 -620 -2.68 69 -59.41 0.0017
2020-02-13 2019-12-31 13F EXTREME NETWORKS COM 30226D106 23,100 1,127 5.13 170 6.25 0.0031
2019-11-13 2019-09-30 13F EXTREME NETWORKS COM 30226D106 21,973 -233 -1.05 160 11.11 0.0034
2019-08-14 2019-06-30 13F EXTREME NETWORKS COM 30226D106 22,206 2,990 15.56 144 0.00 0.0034
2019-05-15 2019-03-31 13F EXTREME NETWORKS COM 30226D106 19,216 482 2.57 144 26.32 0.0035
2019-02-15 2018-12-31 13F EXTREME NETWORKS COM 30226D106 18,734 18,734 114 0.0032
2018-11-14 2018-09-30 13F EXTREME NETWORKS COM 30226D106 0 -18,672 -100.00 0 -100.00
2018-07-18 2018-06-30 13F EXTREME NETWORKS COM 30226D106 18,672 2,340 14.33 149 -17.68 0.0036
2018-05-22 2018-03-31 13F EXTREME NETWORKS COM 30226D106 16,332 1,047 6.85 181 -5.24 0.0048
2018-02-13 2017-12-31 13F EXTREME NETWORKS COM 30226D106 15,285 1,395 10.04 191 15.76 0.0052
2017-11-09 2017-09-30 13F EXTREME NETWORKS COM 30226D106 13,890 -159 -1.13 165 26.92 0.0051
2017-08-10 2017-06-30 13F EXTREME NETWORKS COM 30226D106 14,049 1,378 10.88 130 36.84 0.0043
2017-05-12 2017-03-31 13F EXTREME NETWORKS COM 30226D106 12,671 -10 -0.08 95 48.44 0.0047
2017-02-14 2016-12-31 13F EXTREME NETWORKS COM 30226D106 12,681 1,709 15.58 64 30.61 0.0029
2016-11-15 2016-09-30 13F/A-1 EXTREME NETWORKS COM 30226D106 10,972 53 0.49 49 11.36 0.0028
2016-08-16 2016-06-30 13F EXTREME NETWORKS COM 30226D106 10,919 168 1.56 44 33.33 0.0025
2016-05-11 2016-03-31 13F EXTREME NETWORKS COM 30226D106 10,751 10,751 0.00 33 0.0032
2016-02-10 2015-12-31 13F EXTREME NETWORKS COM 30226D106 0 -10,450 -100.00 0 -100.00
2015-11-04 2015-09-30 13F EXTREME NETWORKS COM 30226D106 10,450 124 1.20 35 25.00 0.0037
2015-07-10 2015-06-30 13F EXTREME NETWORKS COM 30226D106 10,326 10,326 28 0.0028
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.