Eos Energy Enterprises, Inc.
MX ˙ BMV
SecurityMX:EOSE / Eos Energy Enterprises, Inc.
InstitutionElectron Capital Partners, LLC
Latest Disclosed Ownership3,176,994 shares
Ownership 3.80%
Electron Capital Partners, LLC ownership in EOSE / Eos Energy Enterprises, Inc.

2023-01-31 - Electron Capital Partners, LLC has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 3,176,994 shares of Eos Energy Enterprises, Inc. (MX:EOSE). This represents 3.8 percent ownership of the company. In their previous filing dated 2022-09-30 , Electron Capital Partners, LLC had reported owning 3,176,994 shares, indicating a decrease of 0.00 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date
Effective
Date
Form Prev
Shares
Latest
Shares
ΔShares
(Percent)
Ownership
(Percent)
ΔOwnership
(Percent)
2023-01-31 2023-01-31 13G/A 3,176,994 3,176,994 0.00 3.80 -28.30
2022-09-30 2022-09-30 13G 3,176,994 5.30

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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 EOS ENERGY ENTERPRISES COM CL A 29415C101 5,379,661 -742,235 -12.12 26,683 -61.97 1.0444
2026-02-18 2025-12-31 13F/A-1 EOS ENERGY ENTERPRISES COM CL A 29415C101 6,121,896 -472,805 -7.17 70,157 -6.60 3.2578
2026-02-17 2025-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 6,121,896 -472,805 70,157 3.2578
2025-11-14 2025-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 6,594,701 -384,721 -5.51 75,114 110.20 3.4024
2025-08-14 2025-06-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 6,979,422 1,989,144 39.86 35,735 89.44 1.9120
2025-05-15 2025-03-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 4,990,278 -732,638 -12.80 18,863 -32.18 1.2375
2025-02-14 2024-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 5,722,916 -2,237,222 -28.11 27,813 17.65 1.4467
2024-11-14 2024-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 7,960,138 290,381 3.79 23,642 142.72 1.1375
2024-08-15 2024-06-30 13F/A-1 EOS ENERGY ENTERPRISES COM CL A 29415C101 7,669,757 618,173 8.77 9,741 34.10 0.5010
2024-08-14 2024-06-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 5,802,362 -1,249,222 89,705 4.6139
2024-05-15 2024-03-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 7,051,584 93,459 1.34 7,263 -4.23 0.3185
2024-03-01 2023-12-31 13F/A-1 EOS ENERGY ENTERPRISES COM CL A 29415C101 6,958,125 4,827,586 226.59 7,584 65.59 0.3195
2024-02-14 2023-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 6,958,125 4,827,586 7,584 0.3195
2023-11-14 2023-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 2,130,539 -466,873 -17.97 4,581 -59.37 0.2055
2023-08-14 2023-06-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 2,597,412 -579,582 -18.24 11,273 38.07 0.4856
2023-05-15 2023-03-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 3,176,994 0 0.00 8,165 73.67 0.3541
2023-02-14 2022-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 3,176,994 0 0.00 4,702 -11.40 0.1925
2022-11-14 2022-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 3,176,994 3,176,994 5,306 0.2336
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.