Form Energy
PrivateLast Round
Series G
Aug 12, 2026
Est. Valuation
$2.86B
Total Funding Raised
$2.16B
Momentum
Top 5%
of companies Caplight tracks
Company Overview
Form Energy is an energy storage company that develops and commercializes multi-day iron-air battery systems to enable a reliable and fully renewable electric grid.
Sector
Energy & Sustainability
Verticals
Energy Storage, Renewable Energy, Smart Grid
Business Model
B2B
Customer Profile
Hardware Sales, Government Contracts
AI Layer
Non-AI
Keywords
Price History
Caplight MarketPrice™ estimate for Form Energy, published with a 90-day delay.
Caplight MarketPrice™
$25.52
per share, as of July 2026
+45.8%
2-year change
Caplight MarketPrice™ is an estimate of private secondary market pricing, shown here on a delayed basis for illustrative purposes only. It may be incomplete, is subject to change, and may not be relied upon for any purpose or considered investment advice.
Form Energy Comparables
Compare Form Energy with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Ambri | 85% | |
| Invinity Energy Systems | 81% | |
| Eos Energy Enterprises Inc | 81% |
Form Energy Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series G | Aug 12, 2026 | ||||
| Series F | Oct 9, 2024 | ||||
| Grant | Aug 6, 2024 | ||||
| Grant | Dec 13, 2023 | ||||
| Grant | Aug 17, 2023 | ||||
Series E | Oct 4, 2022 |
Key People
Founding team and executive leadership
Form Energy Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Blindspot Ventures | Series E, Series F |
| MIT | Series C, Series B |
| CPP Investments | Series E |
| Janus Henderson Group | Series G |
| Capricorn Investment Group | Series D, Series E, Series C, Series B, Series F |
| Temasek | Series D, Series E, Series C, Series F |
| The Engine | Series D, Series E, Series C, Series B, Series F, Series A, Seed |
Market signals
Structured signals derived from secondary market and firmographic data.
- Aug 12, 2026
$750M round led by T. Rowe Price
- Apr 9, 2026
Utilizes iba AG software for manufacturing control systems.
Recent news
Latest coverage and updates
- is_developingOct 7, 2026
Form Energy is developing iron-based batteries that support long-duration energy storage for renewable power and has commenced production at a West Virginia facility.
- is_developingOct 6, 2026
Form Energy is developing iron-based batteries that use reversible rusting to provide 100-hour storage as a cheaper alternative to lithium-ion systems for long-duration grid storage.
- has_issues_withSep 29, 2026
On Sep 16th '25 in Massachusetts, Form Energy discovered a ransomware attack, took affected systems offline, and hired outside cybersecurity experts; the attack exposed personal and financial information of current and former employees, with notification letters beginning in Oct '25.
- receives_financingSep 8, 2026
Form Energy receives $100M in Series G financing from Sequoia for energy infrastructure serving AI power demands, and the round is already closed.
- receives_financingAug 31, 2026
Form Energy receives $5.6M in credits from the Massachusetts Clean Energy Center in Massachusetts on Aug 31st '26 to create more jobs and support expansion.
Form Energy Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
Request accessFrequently Asked Questions
Common questions about Form Energy's valuation, stock price, and market status.
Is Form Energy a public or private company?
Form Energy is a private company.
What is the current stock price of Form Energy?
Form Energy is a private company, so its shares have no public market price. Caplight tracks Form Energy's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Form Energy worth (valuation)?
Form Energy's valuation is estimated at $2.9B based on funding round data.
Can I buy Form Energy stock?
Form Energy shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Form Energy's last funding round?
Form Energy's most recent funding round was Series G on August 12, 2026.
Who are the main investors in Form Energy?
Key investors in Form Energy include The Engine, Engine Ventures, TPG Rise Climate, Prelude Ventures, Breakthrough Energy Ventures.
Will Form Energy IPO soon?
No public IPO plans have been announced for Form Energy.
How can I track Form Energy secondary market activity?
Caplight tracks bids, offers, and trades in Form Energy's shares on secondary markets.