Eos Energy Enterprises, Inc.
MX ˙ BMV
SecurityMX:EOSE / Eos Energy Enterprises, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership2,489,945 shares
Latest Disclosed Value $ 12,350,127
Northern Trust Corp reports 5.53% increase in ownership of EOSE / Eos Energy Enterprises, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 2,489,945 shares of Eos Energy Enterprises, Inc. (MX:EOSE) valued at $12,350,127 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 2,359,506 shares of Eos Energy Enterprises, Inc.. This represents a change in shares of 5.53% during the quarter.

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)
2026-05-14 2026-03-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 2,489,945 130,439 5.53 12,350 -54.33 0.0003
2026-02-17 2025-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 2,359,506 260,754 12.42 27,040 13.11 0.0034
2025-11-14 2025-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 2,098,752 296,026 16.42 23,905 159.01 0.0031
2025-08-13 2025-06-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 1,802,726 1,250,339 226.35 9,230 342.00 0.0013
2025-05-13 2025-03-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 552,387 31,707 6.09 2,088 -17.47 0.0003
2025-02-14 2024-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 520,680 71,597 15.94 2,531 89.80 0.0004
2024-11-13 2024-09-30 13F EOS ENERGY ENTERPRISES COM 29415C101 449,083 -784,350 -63.59 1,334 -14.88 0.0002
2024-08-14 2024-06-30 13F EOS ENERGY ENTERPRISES COM 29415C101 1,233,433 -59,124 -4.57 1,566 17.66 0.0003
2024-05-14 2024-03-31 13F EOS ENERGY ENTERPRISES COM 29415C101 1,292,557 281,924 27.90 1,331 20.89 0.0002
2024-02-13 2023-12-31 13F EOS ENERGY ENTERPRISES COM 29415C101 1,010,633 78,048 8.37 1,102 -45.09 0.0002
2023-11-13 2023-09-30 13F EOS ENERGY ENTERPRISES COM 29415C101 932,585 -4,848 -0.52 2,005 -50.71 0.0004
2023-08-11 2023-06-30 13F EOS ENERGY ENTERPRISES COM 29415C101 937,433 805,025 607.99 4,068 1,096.47 0.0008
2023-05-15 2023-03-31 13F EOS ENERGY ENTERPRISES COM 29415C101 132,408 -7,211 -5.16 340 65.05 0.0001
2023-02-13 2022-12-31 13F EOS ENERGY ENTERPRISES COM 29415C101 139,619 60,823 77.19 207 57.25 0.0000
2022-11-14 2022-09-30 13F EOS ENERGY ENTERPRISES COM 29415C101 78,796 12,514 18.88 131 63.75 0.0000
2022-08-12 2022-06-30 13F EOS ENERGY ENTERPRISES COM 29415C101 66,282 -315,478 -82.64 80 -94.99 0.0000
2022-05-13 2022-03-31 13F EOS ENERGY ENTERPRISES COM 29415C101 381,760 -10,411 -2.65 1,596 -45.88 0.0003
2022-02-08 2021-12-31 13F EOS ENERGY ENTERPRISES COM 29415C101 392,171 7,327 1.90 2,949 -45.38 0.0005
2021-11-15 2021-09-30 13F EOS ENERGY ENTERPRISES COM 29415C101 384,844 176,072 84.34 5,399 43.97 0.0010
2021-08-13 2021-06-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 208,772 145,250 228.66 3,750 199.28 0.0007
2021-05-12 2021-03-31 13F EOS ENERGY ENTERPRISES COM 29415C101 63,522 63,522 1,253 0.0002
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.