EOSE at a glance
Eos Energy Enterprises, Inc. (EOSE, SEC CIK 1805077) filed its latest 10-K annual report on February 26, 2026, a 10-Q quarterly report on August 5, 2026, an 8-K current report on September 16, 2026 and Form 4 insider filings as recently as September 16, 2026. SignalX summarizes each filing with AI and tracks the company's insider trades and institutional holders.
- For the fiscal year ended December 31, 2025 (FY2025), Eos Energy Enterprises, Inc. (EOSE) reported revenue of $114.2 million (up 631.8% from FY2024) and a net loss of $969.6 million. Diluted EPS was -$6.69.
- As of June 30, 2026, 35 institutional investment managers tracked by SignalX reported holding Eos Energy Enterprises, Inc. (EOSE) shares worth $532.0 million in 13F-HR filings.
- The most recent insider open-market sale reported on Form 4 was by Mastrangelo Joe on September 16, 2026 of 250,000 shares at $3.92 per share.
- In the last 90 days, EOSE insiders reported 2 open-market purchases ($59K) and 6 open-market sales ($2.3M) on Form 4, a net sale of $2.3M.
Source: SEC EDGAR (XBRL financial data, 13F-HR and Form 4 filings).
- Revenue · FY2025
- $114.2M
- +631.8% vs prior year
- Insiders · 90 days
- 2 buys · 6 sells
- Net −$2.3M
- 13F holders
- 35 funds
- $532.0M · +1 vs prior quarter
- Latest 8-K
- Sep 16, 2026
- Item 5.02
AI 10-K Annual Report Analysis
Latest 10-K, fiscal year ended Dec 31, 2025
Business Overview
- Core business: Development and commercialization of energy storage technologies with emphasis on proprietary battery systems
- Emphasis on strict compliance with global anti-bribery and export control regulations amid geographic expansion into corruption-prone regions
- Notable increase in potential dilution risk, with 339M common shares issued plus 219M issuable from convertible securities as of Feb 2026
- Introduction of anti-takeover provisions in charter limiting stockholder influence and entrenching management
- Adoption of smaller reporting company status, reducing disclosure obligations and possibly impacting investor interest and stock liquidity
Risk Factors
- Regulatory risk: No specific regulatory law or agency risk identified in cybersecurity section
- Geopolitical risk: Exposure to military conflict and terrorist attacks impacting cybersecurity and supply chain continuity
- Operational risk: Vulnerability to ransomware and social engineering attacks despite proactive incident response and monitoring processes
- Competitive risk: Not addressed in cybersecurity section
- Financial risk: No leverage, concentration, or key-person risk detailed related to cybersecurity governance
Management Discussion & Analysis
- Revenue $114.2M in 2025, up 632% YoY from $15.6M in 2024, driven by increased production, deliveries, and improved pricing
- Gross loss $143.8M with cost of goods sold $258M vs $98.9M, margin negative due to start-up production and scaling efforts
- Best segment: Battery energy storage systems with multi-GWh DOE loan-funded production expansion; worst: Property, plant write-downs of $1.8M in 2025
- Cash flow negative from operations $211.2M; raised $81.1M from equity and $820.5M from convertible notes in 2025; unrestricted cash $568M at year-end
- Management expects scaling production to meet demand; key risk of reliance on DOE funding and continued capital raises until profitability achieved
AI summary of the EOSE 10-K filed . Generated from the filing text; verify against the original.View on SEC EDGARHow to read a 10-K
AI 10-Q Quarterly Report Analysis
Latest 10-Q, quarter ended Jun 30, 2026
Management Discussion & Analysis
- Q2 revenue $68.8M, up 351% YoY from $15.2M, driven by deliveries and related-party revenue
- Q2 gross margin -71.0% vs -203.1% YoY, with cost of goods sold $117.6M
- Product deliveries best-performing driver at $68.8M total revenue; service revenue declined
- Unrestricted cash $305.5M and restricted cash $58.6M as of June 30, 2026
- Operating cash flow -$191.8M; capital expenditures $70.6M versus $12.0M YoY
Risk Factors
- New investment risk triggered by minority investment in Frontier Power USA, expanding Eos beyond energy-storage manufacturing
- Most material update: Frontier Power USA project execution may affect Eos revenue, backlog, and growth through customer purchases
- Regulatory and compliance risk: Frontier Power USA’s nonconsolidation assessment requires periodic reassessment as ownership and governance change
- Operational risk: Related-party control may limit Eos influence over Frontier Power USA’s commercial, financing, and strategic decisions
- Financial risk: Investment may be difficult to monetize and could cause impairment charges, dilution, or liquidity impacts
AI summary of the EOSE 10-Q filed . Generated from the filing text; verify against the original.View on SEC EDGAR10-K vs 10-Q vs 8-K
AI 8-K Current Report Analysis
The most recent material events, by 8-K item
Item 5.02: Departure/Appointment of Directors or Principal Officers
- Separation agreement with Mr. Kroeker tied to role transition and pending departure
- Twelve months’ salary continuation at $470,000 annual base salary
Item 2.03: Creation of a Direct Financial Obligation
- FFB funded Eos’s third DOE-guaranteed loan advance of $87,018,601 on September 10, 2026
- Total disclosed borrowings now $177,963,601 across three advances
Item 7.01: Regulation FD Disclosure
- Filing contains only the required signature page, not substantive Regulation FD disclosure
- CFO Alessandro Lagi signed the report on September 14, 2026
Item 7.01: Regulation FD Disclosure
- Michelle Buczkowski appointed Chief Commercial Officer, placing new leadership over Eos Energy’s commercial strategy
- Nathan Kroeker planned departure after a transition period, creating a senior leadership change
Item 5.02: Departure/Appointment of Directors or Principal Officers
- Michelle Buczkowski appointed Chief Commercial Officer effective August 24, 2026
- Unified commercial organization combines sales, business development, government affairs, marketing and communications
AI summaries of EOSE 8-K current reports filed with the SEC. What 8-K item codes mean
SignalX for EOSE
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Recent Insider Transactions (Form 4)
Latest reported trades by officers, directors and 10% owners
| Insider | Type | Date | Shares | Price |
|---|---|---|---|---|
| Mastrangelo Joe | Sell | Sep 16, 2026 | 250,000 | $3.92 |
| Puri Sumeet | Sell | Sep 16, 2026 | 43,750 | $3.92 |
| Puri Sumeet | M | Sep 14, 2026 | 87,500 | - |
| Mastrangelo Joe | A | Sep 14, 2026 | 500,000 | - |
| Song Haiyan | Buy | Sep 14, 2026 | 5,000 | $3.84 |
| Puri Sumeet | M | Sep 14, 2026 | 87,500 | - |
| Mastrangelo Joe | M | Sep 14, 2026 | 500,000 | - |
| Song Haiyan | Buy | Sep 11, 2026 | 10,000 | $3.95 |
Financial SummaryXBRL
| Metric | FY2023 | FY2024 | FY2025 |
|---|---|---|---|
| Profitability | |||
| Revenue | $16.4M | $15.6M | $114.2M |
| Operating Income | - | -$175.2M | -$259.3M |
| Net Income | -$229.5M | -$685.9M | -$969.6M |
| Op. Margin | - | -1122.6% | -227.0% |
| Net Margin | -1401.3% | -4394.9% | -849.1% |
| Balance Sheet | |||
| Total Assets | - | $260.3M | $885.2M |
| Equity | - | -$1.1B | -$2.2B |
| ROE | - | 64.1% | 43.3% |
| Per Share | |||
| EPS | $-1.81 | $-4.55 | $-6.69 |
| Cash Flow | |||
| Operating CF | - | -$153.9M | -$211.2M |
| CapEx | $29.3M | $33.2M | $53.8M |
Source: XBRL data in Eos Energy Enterprises, Inc. (EOSE)'s 10-K filings on SEC EDGAR, in USD. Compare across companies →
13F Fund Holdings: Quarterly Trend
Latest: Q2 2026Aggregate EOSE share value held by 13F filers tracked by SignalX, by quarter.
Quarterly totals table
| Quarter | Funds | Total value |
|---|---|---|
| Q2 2026 | 35 | $532.0M |
| Q1 2026 | 34 | $462.0M |
| Q4 2025 | 28 | $1.09B |
| Q3 2025 | 26 | $921.1M |
| Q2 2025 | 24 | $319.3M |
| Q1 2025 | 17 | $105.5M |
| Q4 2024 | 11 | $99.5M |
| Q3 2024 | 9 | $24.2M |
- BlackRock+3.05M (+13%)
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- Vanguard Portfolio Management LLC+446.9K (+16%)
- Northern Trust+417.0K (+17%)
- Citadel Advisors LLC−2.79M (-46%)
- Marex Group plc−2.03M (-74%)
- Goldman Sachs Group−1.89M (-69%)
- Millennium Management−1.73M (-58%)
- Two Sigma Investments−1.29M (-9%)
- Bridgewater Associates LP+633.1K
- M&T Bank+13.2K
- Franklin Resources+11.2K
- Ameriprise Financial+10.9K
- Renaissance Technologies LLC−1.85M
- Blackstone Group−32.6K
- Dimensional Fund Advisors−18.3K
Source: 13F-HR filings on SEC EDGAR (aggregated from 184 fund-quarter rows). Reflects only 13F filers tracked by SignalX, not the full institutional ownership universe. How 13F filings work
EOSE filing archive
AI analysis pages for each 10-K, 10-Q and 8-K
10-K annual reports
10-Q quarterly reports
Latest 2026 SEC Filings: 10-K, 10-Q, 8-K & Form 4
| Form | Filing date | Period | Analysis | SEC |
|---|---|---|---|---|
| 4 | Sep 16, 2026 | - | - | - |
| 4 | Sep 16, 2026 | - | - | - |
| 8-K | Sep 16, 2026 | - | Analysis | - |
| 4 | Sep 15, 2026 | - | - | - |
| 8-K | Sep 14, 2026 | - | Analysis | - |
| 4 | Sep 9, 2026 | - | - | - |
| 4 | Aug 26, 2026 | - | - | - |
| 4 | Aug 26, 2026 | - | - | - |
| 4 | Aug 26, 2026 | - | - | - |
| 4 | Aug 26, 2026 | - | - | - |
| 8-K | Aug 25, 2026 | - | Analysis | - |
| 4 | Aug 6, 2026 | - | - | - |
| 4 | Aug 6, 2026 | - | - | - |
| 4 | Aug 6, 2026 | - | - | - |
| 4 | Aug 6, 2026 | - | - | - |
| 4 | Aug 6, 2026 | - | - | - |
| 8-K | Aug 6, 2026 | - | Analysis | - |
| 4 | Aug 6, 2026 | - | - | - |
| 4 | Aug 6, 2026 | - | - | - |
| 4 | Aug 6, 2026 | - | - | - |
| 4 | Aug 6, 2026 | - | - | - |
| 4 | Aug 6, 2026 | - | - | - |
| 8-K | Aug 5, 2026 | - | Analysis | - |
| 10-Q | Aug 5, 2026 | Jun 30, 2026 | Analysis | |
| 4 | Jul 28, 2026 | - | - | - |
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EOSE SEC filings: frequently asked questions
Are EOSE insiders buying or selling?
In the last 90 days, Eos Energy Enterprises, Inc. (EOSE) officers, directors and 10% owners reported 2 open-market purchases worth $58,700 by 1 insider and 6 open-market sales worth $2.3 million by 3 insiders on Form 4, a net sale of $2.3 million. Many insider sales are pre-planned or for taxes, so purchases usually carry more information.
Which institutions hold EOSE stock?
As of June 30, 2026, the largest Eos Energy Enterprises, Inc. (EOSE) holders among the 13F filers tracked by SignalX were BlackRock ($159.5 million), Vanguard Capital Management LLC ($88.3 million), Two Sigma Investments ($75.2 million), State Street Corp ($59.7 million), Morgan Stanley ($31.2 million). 13F-HR reports are filed up to 45 days after each quarter ends.
What was EOSE's revenue in fiscal year 2025?
For the fiscal year ended December 31, 2025 (FY2025), Eos Energy Enterprises, Inc. (EOSE) reported revenue of $114.2 million (up 631.8% from FY2024) and a net loss of $969.6 million. Diluted EPS was -$6.69. The figures come from the XBRL data in the 10-K.
What are the main risks in EOSE's latest 10-K?
In the 10-K filed February 26, 2026, Eos Energy Enterprises, Inc. (EOSE) flagged: Regulatory risk: No specific regulatory law or agency risk identified in cybersecurity section. Geopolitical risk: Exposure to military conflict and terrorist attacks impacting cybersecurity and supply chain continuity. (AI summary of the Risk Factors section.)
What did EOSE report in its latest 8-K?
Eos Energy Enterprises, Inc. (EOSE) filed an 8-K on September 16, 2026 reporting Item 5.02 (Departure/Appointment of Directors or Principal Officers). Separation agreement with Mr. Kroeker tied to role transition and pending departure.
What are the latest EOSE SEC filings?
Eos Energy Enterprises, Inc. (EOSE) filed its latest 10-K annual report on February 26, 2026, a 10-Q quarterly report on August 5, 2026, an 8-K current report on September 16, 2026 and a Form 4 insider filing on September 16, 2026.
What is EOSE's SEC CIK number?
Eos Energy Enterprises, Inc. (EOSE)'s SEC Central Index Key (CIK) is 1805077. EDGAR lists every EOSE filing under that number.
Ask anything about EOSE
The research agent reads EOSE's filings, financials, insider trades and 13F holders, then answers with sources.