When was Eos founded?

Eos was founded in 2008 and raised its 1st funding round 1 year after it was founded.

Where is Eos located?

Eos is headquartered in Edison, United States.

Who is the current CEO of Eos?

Michael Oster and Joe Mastrangelo s of Eos.

How many employees does Eos have?

As of Jun 30, 2026, the latest employee count at Eos is 475.

Is Eos a funded company?

Eos is a funded company, having raised a total of $65M across 11 funding rounds to date. The company's 1st funding round was a $***** Seed round, raised on Jul 08, 2009.

When was the latest funding round of Eos?

Eos' latest funding was a $***** Post IPO round on Nov 28, 2025, with participation from 0 investor.

What is the annual revenue of Eos?

Annual revenue of Eos is between $100M and $500M as on Dec 31, 2025

Where does Eos rank among its competitors?

Eos ranks 2nd amongst 10 active competitors, of which 3 are funded. It stands 2nd in terms of total funding among its competitors. The most recent competitor to raise funding was Eos, which secured $580M in Nov, 2025.

Who are the top competitors of Eos?

Eos' top competitors include Form Energy, Abound and e-Zinc. Among them, Eos secured the most recent funding round in November, 2025.

Eos - 2026 Company Profile, Team, Funding, Competitors & Financials

Company Details

Provider of zinc based energy storage solutions. It provides solutions for energy storage using aqueous zinc technology. It offers safe, scalable, efficient, and sustainable zinc-based energy storage systems for utility and commercial customers.

Website: www.eose.com/
Social
Email ID: *****@eose.com

Key Metrics

Founded Year

2008

Location

Edison, United States

Stage

Public

Total Funding

$65M in 11 rounds

Latest Funding Round

Post IPO, Nov 28, 2025, $*****

Investors

Fisher Brothers & 10 more

Ranked

2^nd among 10 active competitors

Annual Revenue

$100M - $500M as on Dec 31, 2025

Employee Count

475 as on Jun 30, 2026

Similar Companies

Abound & 5 more

Exit Details

Public

View Eos' full profile

Eos is associated with 2 legal entities given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
EOS ENERGY ENTERPRISES, INC. CIN: 1805077 , United States, Active	Jun 02, 2019	$100M - $500M (As on Dec 31, 2025)	-	-
Eos Energy Storage Llc CIN: 20231037736 , United States, Active	Jan 10, 2023	-	-	-

Eos got listed on Jun 03, 2020.

Click here to take a look at Eos's IPO in detail

Eos has raised a total funding of $65M over 11 rounds. Its first funding round was on Jul 08, 2009. Eos has 11 institutional investors.

Here is the list of recent funding rounds of Eos:

Filter this list

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Nov 28, 2025	8562011	Post IPO	3582901	7807816	8954609	5802760
Jan 19, 2023	5936970	Post IPO	3528646	8346014	7050860	Clear Creek Investments & 2 more
Jul 08, 2021	1651638	Post IPO	5154684	2310620	3453538	Koch Industries

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View details of Eos's funding rounds and investors

The founders of Eos is Michael Oster. Joe Mastrangelo is the CEO of Eos.

Here are the details of Eos' key team members:

Michael Oster: Co-Founder & CEO of Eos and founder of 1 other company.
Joe Mastrangelo: CEO of Eos.
Contact Info: 1 email address

View details of Eos's Founder profiles and Board Members

Eos' employee count trend

Eos has 475 employees as of Jun 26. Here is Eos's employee count trend over the years:

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Top competitors of Eos include Form Energy, Abound and e-Zinc. Here is the list of Top 10 competitors of Eos, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Form Energy 2017, Somerville (United States), Series F	Clean energy technology platform developing long-duration iron-air battery systems	$1.22B	ArcelorMittal, T. Rowe Price & 37 others	71/100
2nd	Eos 2008, Edison (United States), Public	Provider of zinc based energy storage solutions	$65M	Trinity Capital, NRG Energy & 9 others	68/100
3rd	Abound 2012, Vancouver (Canada), Public	Provider of battery technology for energy solution	-	Canadian Space Agency, Sustainable Development Technology Canada ... & 1 others	45/100
4th	e-Zinc 2012, Toronto (Canada), Series A	Provider of rechargeable zinc batteries	$61.8M	Energy Foundry, Evok Innovations & 21 others	45/100
5th	Sthyr Energy 2024, Chennai (India), Seed	Developer of zinc-air battery technology for long-duration energy storage solutions	$1M	Speciale Invest, Antares Ventures	41/100
6th	NantEnergy 2006, Culver City (United States), Funding Raised	Manufacturer of the zinc-air energy storage system	-	OSTI	26/100
7th	Voya Energy 2025, Hayward (United States), Unfunded	Developer of energy generation devices utilizing recycled metal fuel sources	-	-	21/100
8th	Zincnyx Energy 2015, New York (United States), Funding Raised	Developer of energy storage solutions utilizing zinc-air battery technology	-	-	21/100
9th	ESI Asia Pacific Maryborough (Australia), Funding Raised	Provider of renewable energy storage battery solutions	-	Queensland Government	21/100
10th	Emmesh 2021, Israel, Unfunded	Developer of long duration energy storage systems using abundant materials	-	-	16/100