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Pacific Fusion

Inertial confinement fusion via pulsed-power architecture
Pacific Fusion is pursuing inertial confinement fusion via a pulsed-power architecture, leveraging National Nuclear Security Administration (NNSA) lineage and General Atomics manufacturing expertise. The company raised one of the largest Series A rounds in deep-tech history — $900M in October 2024, led by General Catalyst, with participation from Breakthrough Energy Ventures, Bill Gates, and Eric Schmidt; Stripe's Patrick Collison and General Catalyst's Hemant Taneja sit on the board. Capital is structured as milestone-based tranches, unlocking as specific technical goals (notably the demonstrator system) are achieved. Headquartered in Fremont, CA.
Energy 📍 Fremont, CA Founded 2023
Current Valuation
Private
PRIVATE

IPO Outlookprivate

Is Pacific Fusion going public?
No. Pacific Fusion is private and has not filed to go public. There is no S-1 on file.
What is Pacific Fusion's valuation in 2026?
No confirmed valuation is on record for Pacific Fusion. The roster shows funding and investors where they are public; it does not estimate a mark.
Has Pacific Fusion filed an S-1?
No public S-1 is on file for Pacific Fusion.
Who are Pacific Fusion's investors?
Pacific Fusion's investors include General Catalyst, Breakthrough Energy Ventures, Bill Gates, Eric Schmidt, Patrick Collison (board), Hemant Taneja (board).
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.

Company Profile

CEO
Will Regan
Founded
2023
HQ
Fremont, CA
Employees
~75
Total Raised
$900M
Growth
Largest Series A in fusion history; milestone-based capital unlock
Last Round
Series A — $900M (Oct 2024) · Lead: General Catalyst
IPO Status
private

Fundraising Status

Series A · $900M · 1y 10mo ago
privateTotal raised $900M

Secondary Market

Implied price / share
$0.5
Open interest
1
Secondary price return by period
Secondary market period returns3-month-90.0%6-month-90.0%1-year-90.0%All-time-90.0%
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 A$900MOct 2024General Catalyst—

Talent Signal

Hiring trend
▶ Hiring steady
23% of roles posted in last 30d
Open roles
31
via greenhouse
Product-build share
81%
engineering, research, product, design
Trajectory
steady
heavy product build — 81% of open roles are product-building functions (engineering/research/product) — 15 of 31 open roles are hardware.
Actively hiring with no tracked executive churn.
Open roles by month
Open roles by month31Aug '26
Open roles by function
Open roles by functionHardware15Engineering8Other3Finance & Strategy2Ops & People1Research1Security1
■ product-building   ■ go-to-market / G&A
Controls Hardware EngineerElectro-Mechanical Build TechnicianFacilities Engineer Infrastructure Electrical EngineerInfrastructure Mechanical EngineerManufacturing Engineer
Counted from Pacific Fusion'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

Will ReganKeith LeChien

Investors

General Catalyst · Breakthrough Energy Ventures · Bill Gates · Eric Schmidt · Patrick Collison (board) · Hemant Taneja (board)

Products

  • Pulsed-power inertial confinement demonstrator system (in development)

Competitors

Commonwealth Fusion Systems · Helion Energy · TAE Technologies · Xcimer Energy · Zap Energy
EnergyFusionClimateDeep Tech
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of recent date. Refreshed quarterly.