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Form Energy

Long-duration iron-air battery storage developer enabling multi-day grid storage
Energy 📍 Somerville, MA Founded 2017
Current Valuation
$2.5B
as of 2024-Q3
UNICORN

IPO Outlookprivate

Is Form Energy going public?
No. Form Energy has no imminent IPO plans on record. It is still private.
What is Form Energy's valuation in 2026?
Form Energy is valued at $2.5B as of 2024-Q3, set by its Series F ($405M, Oct 2024). That is the last confirmed mark, not a live price — private shares do not trade continuously.
Has Form Energy filed an S-1?
No public S-1 is on file for Form Energy.
Who are Form Energy's investors?
Form Energy's investors include T. Rowe Price, Breakthrough Energy Ventures, Energy Impact Partners, TPG Rise, ArcelorMittal, GIC.
Answers are derived from the roster record shown on this page — filing status, last round and confirmed marks. Where the record is silent, the answer says so rather than guessing.
Form Energy builds 100-hour iron-air rechargeable batteries optimized for multi-day grid-scale storage at a fraction of lithium-ion cost. CEO Mateo Jaramillo previously led Tesla Energy. Operating a manufacturing facility in Weirton, WV and signing utility-scale deals with Xcel, Georgia Power, and Dominion Energy.

Company Profile

CEO
Mateo Jaramillo
Founded
2017
HQ
Somerville, MA
Employees
~700
Total Raised
$1.2B
Last Round
Series F — $405M (Oct 2024) · Lead: T. Rowe Price
IPO Status
no imminent plans

Fundraising Status

Series F · $405M · 1y 10mo ago
no imminent plansTotal raised $1.2B

Secondary Market

Implied price / share
$16.76
Last round price / share
$24.18
vs last round
-30.7%
Open interest
4
Last round price vs secondary price
Last round vs current secondary price per share$24.18Last round$16.76Current
Secondary price return by period
Secondary market period returns3-month+9.3%6-month+61.0%1-year+8.3%All-time+39.7%
Implied per-share price from private secondary transactions, as of Jun 2026. This is a point estimate, not a quote — the feed carries no bid, ask or spread, and a secondary print is evidence of what someone paid on that date rather than a live market. Compare across every tracked name →

Latest Funding Round

RoundAmountDateLead InvestorPost-Money
Series F$405MOct 2024T. Rowe Price—

Talent Signal

Hiring trend
● First snapshot
trend accrues with monthly sweeps
Open roles
186
via ashby
Product-build share
70%
engineering, research, product, design
Trajectory
steady
heavy product build — 70% of open roles are product-building functions (engineering/research/product) — 70 of 186 open roles are hardware.
Actively hiring with no tracked executive churn.
Open roles by month
Open roles by month186Aug '26
Open roles by function
Open roles by functionHardware70Engineering52Other43Ops & People7Product5Design2Finance & Strategy2Legal & Policy2Sales & GTM1
■ product-building   ■ go-to-market / G&A
Staff Mechanical Engineer, Dimensional ManagementSenior Test EngineerStaff Mechanical Engineer, High-Voltage DesignSenior Mechanical Engineer, Plastics DesignStaff Manufacturing Engineer, Web Handling & DryingStaff Project Engineer
Counted from Form Energy's live job board as of 2026-08-17; role functions classified from posting titles. Open-role counts are an activity signal, not headcount. Refreshed monthly.

Founders & Key People

Mateo JaramilloWilliam WoodfordTed WileyYet-Ming ChiangMarco Ferrara

Investors

T. Rowe Price · Breakthrough Energy Ventures · Energy Impact Partners · TPG Rise · ArcelorMittal · GIC

Products

  • 100-hour iron-air battery (Form Pearl)

Competitors

ESS Tech · EnerVenue · Ambri · Antora Energy
EnergyBattery StorageLong-DurationClimate
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of 2024-Q3. Refreshed quarterly.