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Eos Energy Enterprises (EOSE) Stock Price, News & Analysis

EOSE NASDAQ
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Price Move History

Daily moves over 5%
119 252 sessions, September 26, 2025 to September 28, 2026
Largest daily move
-39.4% close of February 26, 2026
1-year change
-69.7% closing prices, September 26, 2025 to September 28, 2026
5-year change
-78% closing prices, September 28, 2021 to September 28, 2026

Company Description

Eos Energy Enterprises, Inc. (NASDAQ: EOSE) is an American energy company that designs, sources, manufactures, and provides zinc-based battery energy storage systems (BESS). According to multiple company disclosures, Eos focuses on long-duration energy storage and positions its technology as an alternative to conventional lithium-ion systems for utility-scale, microgrid, commercial, and industrial applications.

The company’s BESS uses its proprietary Znyth™ technology, described in recent press releases as a proven chemistry based on readily available non-precious earth components. Eos states that this chemistry is non-flammable, secure, stable, and scalable, and that it is intended to serve long-duration applications in the range of 4 to 16+ hours. These characteristics are presented as important for addressing increased grid demand and complexity while providing operational flexibility to customers.

Business focus and technology

Eos reports that it is "accelerating the shift to American energy independence" by transforming how power is stored. Its zinc-based BESS is manufactured in the United States and is aimed at utility, renewable energy, commercial, and industrial users that need long-duration storage. The company highlights that its systems are designed for real-world deployment, with modular architectures that prioritize safety, flexibility, and durability.

In recent communications, Eos has emphasized its Z3™ energy storage systems and the DawnOS™ platform. Z3 is described as an evolution of the company’s zinc-based technology, targeting grid-scale applications and extended duration. DawnOS™ is characterized as a proprietary battery management, controls, and analytics platform that uses advanced algorithms for State of Charge (SoC), State of Health (SoH), and State of Energy (SoE). Eos states that DawnOS™ is purpose-built for its Z3 systems to improve efficiency, reduce operating costs, enhance grid coordination, and provide precise control down to the module level.

Product architectures and applications

Press releases describe several system-level offerings built on Eos technology. The company refers to the Eos Cube solution, which is powered by its zinc-based Znyth™ technology and Z3 modules. In 2026, Eos announced Eos Indensity™, which it calls a breakthrough architecture for battery energy storage. Indensity is described as being engineered with a system design framework the company calls Spatial Intelligence, which considers built, human, and natural environments where power is needed.

The Eos Indensity™ architecture centers on the Eos Indensity Core™, a modular, stackable unit that integrates Z3 battery modules, DawnOS™ controls, onboard cooling, and power management. Eos states that this Core is designed to be compact and self-contained, with plug-and-play electrical and communications connections. According to the company, Indensity is intended to adapt to various site footprints by using vertical and horizontal space, with the goal of making gigawatt-hour scale storage achievable in constrained locations.

Across its product set, Eos consistently highlights long-duration use cases. Company materials state that its BESS is suitable for 4 to 16+ hour applications and can support complex cycling and demanding scenarios, including data center and AI-related loads. Eos also points to deployment opportunities near data centers, military bases, and urban infrastructure, as well as projects associated with utilities and grid-reliability programs.

Manufacturing and capital structure

Eos describes its manufacturing as U.S.-based and designed for replication. In a World Economic Forum-related release, the company notes that its production model is intended to be replicated globally without placing undue strain on local resources such as water or power. The company has also discussed a growth strategy that includes manufacturing expansion and a software hub in Pennsylvania, supported by state and county incentives, as part of what it calls Project AMAZE.

From a financing perspective, Eos has disclosed multiple capital transactions. In November 2025, the company issued 1.75% Convertible Senior Notes due 2031, governed by an indenture with Wilmington Trust, National Association as trustee. The notes are senior unsecured obligations of the company and include conversion, redemption, and fundamental change provisions described in detail in the related Form 8-K. Eos has also reported a credit and guaranty agreement with lenders arranged by Cerberus US Servicing, LLC, providing a secured multi-draw term loan and a revolving credit facility, and a loan guarantee structure with the U.S. Department of Energy and the Federal Financing Bank.

These arrangements, as described in SEC filings, are part of the company’s efforts to fund manufacturing expansion, manage existing convertible notes, and support its long-duration energy storage business. Eos has also entered into a warrant agreement with the U.S. Department of Energy, under which the DOE received a warrant to purchase shares of the company’s common stock, and has reported public warrant exercises that added cash to its balance sheet.

Market activity and partnerships

Eos reports that it serves customers in the utility, renewable energy, and industrial sectors, and that its commercial opportunity pipeline includes large-scale projects. In late 2025, the company announced a strategic 228 MWh order from Frontier Power Ltd., a UK-based energy developer, under a 5 GWh framework agreement. The order is intended to deploy Eos Z3™ systems with the DawnOS™ platform across storage and grid-reliability projects, including demonstrations connected to the UK’s Ofgem Cap-and-Floor program.

The company has also disclosed a master supply agreement with MN8 Energy and a strategic collaboration framework with Talen Energy to develop multi-gigawatt-hour storage capacity supporting data centers and AI infrastructure in Pennsylvania. Eos has highlighted that its technology is being cycled by multiple utilities and at a Department of Defense site, where it reports round-trip efficiency metrics for Z3 technology.

In addition to commercial partnerships, Eos has participated in broader energy discussions, including the World Economic Forum Annual Meeting. The company presents itself as contributing to conversations on energy resilience, reliability, and security, and emphasizes a manufacturing strategy that it says can support energy infrastructure across regions.

Stock information and regulatory context

Eos Energy Enterprises, Inc. trades on the Nasdaq Capital Market under the ticker symbol EOSE. The company files periodic and current reports with the U.S. Securities and Exchange Commission, including Forms 10-K, 10-Q, 8-K, and proxy statements. These filings describe its financing arrangements, governance matters, and operational milestones, including special stockholder meetings related to share issuance approvals and amendments to credit agreements.

Investors reviewing EOSE stock can examine these SEC filings for details on the company’s capital structure, debt obligations, warrant agreements, and government-backed loan facilities. Press releases furnished as exhibits to Form 8-K filings provide additional context on commercial orders, manufacturing plans, and product introductions such as Z3™, DawnOS™, and Eos Indensity™.

Risk considerations

In its public disclosures, Eos includes forward-looking statements and detailed risk factor summaries. The company notes that its results can be affected by its ability to raise financing, meet milestones under loan and credit agreements, maintain its Nasdaq listing, convert backlog and pipeline into revenue, and manage manufacturing scale-up. It also cites risks related to evolving energy policies, supply chain conditions, general economic factors, and competition from existing or new competitors.

These statements are intended to caution investors that operational and financial outcomes may differ from expectations. For a full discussion of risks, the company directs readers to its most recent Annual Report on Form 10-K and subsequent quarterly and current reports filed with the SEC.

Stock Performance

$3.11
-1.74%
0.06
Last updated: September 28, 2026 at 19:59
-69.7%
Performance 1 year

Eos Energy Enterprises (EOSE) closed at $3.07 on September 28, 2026. Over the past 12 months, the price has lost 69.7%.

See what a $1,000 investment in EOSE would be worth today

EOSE Metrics & Rankings

Price returns through September 28, 2026. Month-to-date and YTD include the first trading day. Ranking links may use different dates.

Latest News

Eos Energy Enterprises has 10 recent news articles. Of the recent coverage, 3 articles coincided with positive price movement and 7 with negative movement. Key topics include earnings, offering, conferences. View all EOSE news →

Insider Radar

Net Sellers
90-Day Summary
15,000
Shares Bought
705,964
Shares Sold
9
Transactions
Most Recent Transaction
Mastrangelo Joe (Chief Executive Officer) sold 250,000 shares @ $3.92 on September 16, 2026

Insider selling at Eos Energy Enterprises over the past 90 days can reflect routine portfolio management, scheduled trading plans (Rule 10b5-1), tax planning, or compensation-related dispositions rather than a directional view on the stock.

Based on SEC Form 4 filings over the last 90 days.

Financial Highlights

Eos Energy Enterprises generated $114.2M in revenue in FY2025, retaining a -126.0% gross margin, operating income reached -$259.3M (-227.0% operating margin), and net income was -$969.6M, reflecting a -849.1% net profit margin. Diluted earnings per share stood at -$6.69. The company generated -$211.2M in operating cash flow. The current ratio was 4.94, measuring current assets divided by current liabilities.

$114.2M
Revenue (FY2025)
-$969.6M
Net Income (FY2025)
-$211.2M
Operating Cash Flow

Upcoming Events

OCT
01
October 1, 2026 Operations

Relocation start

Move of Line 1 from Turtle Creek to Thorn Hill (Warrendale, PA) begins in Q4 2026; subject to lender approvals and union process.
OCT
20
October 20, 2026 Corporate

Executive departure

Nathan Kroeker will depart Eos after a transition period; departure effective 2026-10-20. Michelle Buczkowski succeeds him as CCO.
DEC
31
December 31, 2026 Operations

4 GWh capacity target

Thorn Hill, PA: ramp to 4 GWh annual capacity targeted by 2026-12-31; impacts supply for US and UK multi-GWh agreements.
JAN
01
January 1, 2027 Operations

Initial deployments targeted

Initial Eos Indensity battery deployments targeted for 2027 under JDA with TURBINE-X for AI hyperscale data centers.
JAN
01
January 1, 2027 - April 30, 2027 Operations

Relocation completion

Expected completion of consolidation at Thorn Hill (Warrendale, PA) in early 2027; full benefits and 4 GWh capacity ramp to follow.
JAN
01
January 1, 2030 Product

Long-duration operation

Eos Z3 10-hour, 10 MW/100 MWh long-duration storage at Mammoth Solar (Kanawha County, WV) expected commercial operation in 2030.
JUN
15
June 15, 2030 Financial

Convertible notes maturity

Maturity of $225 M convertible senior notes due June 15, 2030
DEC
31
December 31, 2031 Corporate

Supply agreement terminates

Master Supply Agreement with CAPAC exclusive in DACH through 2031; 750 MWh commitment, pathway to 2 GWh scale.

Eos Energy Enterprises has 8 upcoming scheduled events. The next event, "Relocation start", is scheduled for October 1, 2026 (tomorrow). 1 of the upcoming events are financial in nature, such as earnings calls or quarterly results. Investors can track these dates to stay informed about potential catalysts that may affect the EOSE stock price.

Short Interest History

Last 12 Months

Short interest in Eos Energy Enterprises (EOSE) currently stands at 120.0 million shares, up 7.8% from the previous reporting period, representing 33.5% of the float. Since September 2025, short interest has increased by 47.9%.

Days to Cover History

Last 12 Months

Days to cover for Eos Energy Enterprises (EOSE) currently stands at 4.1 days, down 16.6% from the previous period. The ratio is the reported short interest divided by the average daily trading volume. Across the settlements charted above, it has ranged from 2.6 to 6.8 days.

EOSE Company Profile & Sector Positioning

Eos Energy Enterprises (EOSE) operates in the Electrical Equipment & Parts industry within the broader Industrials sector and is listed on the NASDAQ.

Investors comparing EOSE often look at related companies in the same sector, including Atkore Inc. (ATKR), EnerSys, Inc. (ENS), Powell Industries Inc (POWL), Hayward Holdings, Inc. (HAYW), and Energizer Holdings, Inc (ENR). Comparing financial metrics, valuation ratios, and stock performance across these peers can help investors evaluate EOSE's relative position within its industry.

Frequently Asked Questions

What is the current stock price of Eos Energy Enterprises (EOSE)?

The current stock price of Eos Energy Enterprises (EOSE) is $3.11 as of September 28, 2026.

What is the market cap of Eos Energy Enterprises (EOSE)?

The market cap of Eos Energy Enterprises (EOSE) is approximately $1.1B. Learn more about what market capitalization means .

What is the revenue of Eos Energy Enterprises (EOSE) stock?

The FY2025 revenue of Eos Energy Enterprises (EOSE) is $114.2M, from its most recent completed fiscal year.

What is the net income of Eos Energy Enterprises (EOSE)?

The FY2025 net income of Eos Energy Enterprises (EOSE) is -$969.6M, from its most recent completed fiscal year.

What is the earnings per share (EPS) of Eos Energy Enterprises (EOSE)?

The diluted earnings per share (EPS) of Eos Energy Enterprises (EOSE) is -$6.69 for FY2025, its most recent completed fiscal year. Learn more about EPS .

What is the operating cash flow of Eos Energy Enterprises (EOSE)?

The operating cash flow of Eos Energy Enterprises (EOSE) is -$211.2M. Learn about cash flow.

What is the profit margin of Eos Energy Enterprises (EOSE)?

The net profit margin of Eos Energy Enterprises (EOSE) is -849.1%. Learn about profit margins.

What is the operating margin of Eos Energy Enterprises (EOSE)?

The operating profit margin of Eos Energy Enterprises (EOSE) is -227.0%. Learn about operating margins.

What is the gross margin of Eos Energy Enterprises (EOSE)?

The gross profit margin of Eos Energy Enterprises (EOSE) is -126.0%. Learn about gross margins.

What is the current ratio of Eos Energy Enterprises (EOSE)?

The current ratio of Eos Energy Enterprises (EOSE) is 4.94, measuring current assets divided by current liabilities. Learn about liquidity ratios.

What is the gross profit of Eos Energy Enterprises (EOSE)?

The gross profit of Eos Energy Enterprises (EOSE) is -$143.8M for FY2025, its most recent completed fiscal year.

What is the operating income of Eos Energy Enterprises (EOSE)?

The operating income of Eos Energy Enterprises (EOSE) is -$259.3M. Learn about operating income.

What does Eos Energy Enterprises, Inc. do?

Eos Energy Enterprises, Inc. designs, sources, manufactures, and provides zinc-based battery energy storage systems (BESS). Company materials state that its systems are intended for long-duration applications and serve utility-scale, microgrid, commercial, and industrial customers that need to store power for several hours.

What technology underpins Eos Energy’s battery energy storage systems?

Eos reports that its BESS uses Znyth™ technology, a zinc-based chemistry built on readily available non-precious earth components. The company describes this chemistry as non-flammable, secure, stable, and scalable, and positions it as an alternative to conventional lithium-ion technology for long-duration storage.

In which applications are Eos Energy’s systems used?

According to the company’s press releases, Eos BESS is used in utility-scale, microgrid, commercial, and industrial long-duration energy storage applications, generally in the range of 4 to 16+ hours. The company also cites use cases related to data centers, AI infrastructure, grid-reliability projects, and other large-load applications.

What is Eos Z3™ technology?

Eos Z3™ is described as the company’s energy storage system built on its zinc-based chemistry. Press materials indicate that Z3 targets grid-scale, long-duration applications and is deployed in projects such as the 228 MWh order with Frontier Power, where it is combined with the DawnOS™ controls and analytics platform.

What is DawnOS™ and how does it relate to Eos systems?

DawnOS™ is presented as Eos’s proprietary battery management system, software, controls, and analytics platform. The company states that DawnOS™ uses advanced algorithms for State of Charge (SoC), State of Health (SoH), and State of Energy (SoE) to improve efficiency, reduce operating costs, enhance grid coordination, and provide precise control of its Z3™ systems.

What is Eos Indensity™?

Eos Indensity™ is described in a 2026 press release as a battery energy storage architecture designed to transform how storage scales. It is built around the Eos Indensity Core™, a modular, stackable unit that integrates Z3 modules, DawnOS™ controls, onboard cooling, and power management. Eos states that Indensity is engineered with a Spatial Intelligence framework to adapt to diverse site conditions and make high-capacity storage achievable in constrained footprints.

How does Eos describe the safety characteristics of its technology?

The company states that its Znyth™ technology is non-flammable and uses readily available non-precious earth components. In multiple releases, Eos characterizes its BESS as a safe, secure, and stable alternative to conventional lithium-ion systems, and notes that these attributes are important for mission-critical and long-duration applications.

Where are Eos Energy’s systems manufactured?

Eos describes itself as an American energy company with battery energy storage systems manufactured in the United States. It has also discussed a U.S. manufacturing expansion and a software hub in Pennsylvania as part of Project AMAZE, supported by state and county incentives, to strengthen American energy storage capacity.

What types of customers and partners does Eos work with?

Company announcements reference customers and partners that include utilities, renewable energy operators, industrial users, data center-related projects, and energy developers. Examples cited in press releases include Frontier Power Ltd. in the UK, MN8 Energy, and Talen Energy, as well as projects tied to grid-reliability programs and a Department of Defense site.

How is Eos Energy Enterprises financed?

Eos has disclosed several financing arrangements in SEC filings and press releases, including 1.75% Convertible Senior Notes due 2031, a secured multi-draw term loan and revolving credit facility under a credit and guaranty agreement with lenders arranged by Cerberus US Servicing, LLC, and a loan guarantee structure with the U.S. Department of Energy and the Federal Financing Bank. The company has also reported equity offerings, warrant exercises, and a warrant issued to the DOE.

What risks does Eos highlight in its public disclosures?

In forward-looking statement sections of its press releases and SEC filings, Eos notes risks related to its ability to raise financing, meet milestones under loan and credit agreements, forecast trends, convert backlog and pipeline into revenue, maintain its Nasdaq listing, and scale manufacturing. It also cites risks from competition, evolving energy policies, supply chain disruptions, economic conditions, and other factors described in its Annual Report on Form 10-K and subsequent reports.