Companies104 Funding$41.8B Rounds76 ▼1 mo Investors69 Eng roles4177 ● data fresh
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Commonwealth Fusion Systems

fresh

Commonwealth Fusion Systems

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A company using a new superconducting material to control plasma for fusion energy. observed

fresh · evidence 14d ago 8 sources no confidence data
—/100
Developer momentum
Why this score? ↓

What we have established three decisions, kept apart

  1. 1 Identity verified Not recorded

    No person- or entity-level identity check is on record for this company. A name match is not one.

  2. 2 Evidence sufficient to publish Yes

    The inclusion bar: two or more independent sourced evidence families. This profile is published and listed. It is a statement about how much evidence we hold, and about nothing else.

  3. 3 Fit for a seed/Series-A sourcing buyer Not established

    We have not established fit. That is not a soft no and not a soft yes — it is unknown, and it is never counted as a qualified prospect.

Funding
no round
Adoption
no signal
downloads / week
Developer
not scored
momentum / 100
Hiring
no board
eng openings
Commercial
not checked
homepage

Ecosystem

Derived connections from primary evidence — Form D officer rosters and shared lead investors. A shared name is a lead, not proof of identity.

officer alan eustace → Commonwealth fusion officer brandon sorbom → Commonwealth fusion officer katie rae → Commonwealth fusion officer massimiliano pieri → Commonwealth fusion officer mitchell goldstein → Commonwealth fusion officer robert mumgaard → Commonwealth fusion

Traction

No traction data yet. This category is part of the record and will populate as evidence is collected or the founder provides it.

Current round

No fundraising data yet. This category is part of the record and will populate as evidence is collected or the founder provides it.

Opportunity & risk

No standout signal or flag yet.

7 independent sources 0 promoted signals inspect the evidence →

The skeptic's read what this company has said, judged against what happened

1 claims on record 0 verified 1 contradicted 0 still unproven

Sharpest miss on record: “Commonwealth Fusion Systems will have a demonstration fusion reactor operational by 2025.” — Commonwealth Fusion Systems has not yet built or operated a demonstration fusion reactor; the SPARC project is still under construction and has not reached an operational status by…

Unproven ≠ false — it means the deadline or the evidence hasn't arrived. Nothing here is editorial: every count is a ledger row you can open on the Proof page.

Evaluation

How it's evaluated Four independent layers ▾

No single number decides. Layers can disagree — that's the point. New to this? →

Platform score derived
—
Founder self-assessment claimed
8/100
Investor ratings opinion
—
Expert ratings opinion
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Technology No signals collected yet ▾
No technology data yet. This category is part of the record and will populate as evidence is collected or the founder provides it.
Team & hiring No signals collected yet ▾
No team & hiring data yet. This category is part of the record and will populate as evidence is collected or the founder provides it.
Market & funding stage No signals collected yet ▾
No market & funding stage data yet. This category is part of the record and will populate as evidence is collected or the founder provides it.

Evidence & scoring

Why this score? Score breakdown ▾
No score breakdown data yet. This category is part of the record and will populate as evidence is collected or the founder provides it.

Capital timeline every dated signal, across tiers

  1. rumor Commonwealth Fusion Systems Raises $863M to Commercialize Fusion Energy ↗
  2. rumor Nvidia, Google, and Bill Gates Help Commonwealth Fusion Systems Raise $863M ↗
  3. rumor Nvidia, Google, and Bill Gates Help Commonwealth Fusion Systems Raise $863M ↗
  4. rumor Commonwealth Fusion Systems Raises $1.8B to Commercialize Fusion Energy ↗
  5. rumor Commonwealth Fusion Systems raises $1.8 billion to commercialize fusion energy ↗
  6. SEC · primary SEC D filed ↗
  7. rumor Commonwealth Fusion Systems Raises $1.8B from Gates, Soros ↗
  8. rumor Commonwealth Fusion Systems Raises $84M in A2 Round ↗
  9. SEC · primary SEC D filed ↗
  10. SEC · primary SEC D/A filed ↗
  11. rumor Commonwealth Fusion Systems Closes $115M Series A ↗
  12. SEC · primary SEC D filed ↗

Narrative vs. reality Latest filing does not date the money

Reported narrative · Tier 2
No reported round on record.
Filed reality · Tier 0 · SEC
4 Form D
latest filed 2021-12-02 · none near the reported round

The most recent filing (D, filed 2021-12-02) carries no first-sale date in our record. The filing date is when the notice reached EDGAR, not when the money moved, so no financing date is established. This panel is not saying the money is old, and it is not saying it is new. Neither is established by this filing.

Regulatory filings SEC EDGAR · primary source

Form D filings — the company's own authoritative record of a Reg D private raise, filed with the SEC. Primary-source evidence: not commentary, not inference. 4 filings, latest filed 2021-12-02. A Form D is filed after the sale, so the filing date is when the notice reached the SEC — not when the round closed. Where the issuer stated a first-sale date it is shown beside it, and a D/A amends an earlier offering rather than reporting a new one.

Financing events four different events, four different dates

A first sale, a filing, an amendment and a public announcement are not the same event, and one date may not stand in for another. Where the latest financing date cannot be established from what we hold, this says unknown rather than substituting a date we do have.

Latest established financing date
unknown
Money moved on or after
not established
Total reported by
2021-12-02
Basis
unknown

The most recent filing (D, filed 2021-12-02) carries no first-sale date in our record. The filing date is when the notice reached EDGAR, not when the money moved, so no financing date is established.

Community chatter Hacker News · Tier 3 · unverified manip. risk elevated · 0.33

Gray-market attention, not quality. 29+ HN mentions (peak 8 points). Claim-shaped headlines are rumors until corroborated — a Tier-3 factual claim carries no evidentiary weight on its own. Risk drivers: some SEC filings on record. ▲ 8 An oil and gas giant signed a $1B deal with Commonwealth Fusion Systems 2025-09-22 ↗

Raw observations 20 records ▾
AttributeValueKindSourceObservedStateConf.
common_name Commonwealth Fusion Systems observed intelligence.claims 2026-10-01 normalized 0.90
community.hn.max_points 8 observed artifact ↗ 2026-09-26 normalized 0.20
community.hn.mentions 34 observed artifact ↗ 2026-09-26 superseded 0.20
community.hn.mentions 29 observed artifact ↗ 2026-10-08 normalized 0.20
community.hn.rumors [{"url": "https://news.ycombinator.com/item?id=29404404", "title": "Commonwealth Fusion Systems Raises $1.8B from Gates, Soros", "points": 7, "created_at": "2021-12-01", "evidence_type": "rumor", "ver observed artifact ↗ 2025-09-02 superseded 0.20
community.hn.rumors [{"url": "https://news.ycombinator.com/item?id=29404404", "title": "Commonwealth Fusion Systems Raises $1.8B from Gates, Soros", "points": 7, "created_at": "2021-12-01", "evidence_type": "rumor", "ver observed artifact ↗ 2025-09-02 superseded 0.20
community.hn.rumors [{"url": "https://news.ycombinator.com/item?id=29404404", "title": "Commonwealth Fusion Systems Raises $1.8B from Gates, Soros", "points": 7, "created_at": "2021-12-01", "evidence_type": "rumor", "ver observed artifact ↗ 2025-09-02 normalized 0.20
community.hn.top_story {"url": "https://news.ycombinator.com/item?id=45332393", "title": "An oil and gas giant signed a $1B deal with Commonwealth Fusion Systems", "points": 8, "created_at": "2025-09-22"} observed artifact ↗ 2025-09-22 superseded 0.20
community.hn.top_story {"url": "https://news.ycombinator.com/item?id=45332393", "title": "An oil and gas giant signed a $1B deal with Commonwealth Fusion Systems", "points": 8, "created_at": "2025-09-22"} observed artifact ↗ 2025-09-22 superseded 0.20
community.hn.top_story {"url": "https://news.ycombinator.com/item?id=45332393", "title": "An oil and gas giant signed a $1B deal with Commonwealth Fusion Systems", "points": 8, "created_at": "2025-09-22"} observed artifact ↗ 2025-09-22 normalized 0.20
description A company using a new superconducting material to control plasma for fusion energy. observed artifact ↗ 2026-10-09 normalized 0.60
sec.cik 0001744079 observed artifact ↗ 2026-09-26 normalized 0.99
sec.form_d.count 4 observed artifact ↗ 2021-12-02 normalized 0.99
sec.form_d.filings [{"cik": "0001744079", "form": "D", "filed": "2021-12-02", "accession": "0001744079-21-000001", "index_url": "https://www.sec.gov/Archives/edgar/data/1744079/000174407921000001/0001744079-21-000001-in observed artifact ↗ 2021-12-02 superseded 0.99
sec.form_d.filings [{"cik": "0001744079", "form": "D", "filed": "2021-12-02", "accession": "0001744079-21-000001", "index_url": "https://www.sec.gov/Archives/edgar/data/1744079/000174407921000001/0001744079-21-000001-in observed artifact ↗ 2021-12-02 normalized 0.99
sec.form_d.latest_filed 2021-12-02 observed artifact ↗ 2021-12-02 normalized 0.99
sec.form_d.related_persons {"filed": "2021-12-02", "persons": [{"last_name": "Mumgaard", "first_name": "Robert", "clarification": null, "relationships": ["Executive Officer", "Director"]}, {"last_name": "Sorbom", "first_name": observed artifact ↗ 2021-12-02 superseded 0.99
sec.form_d.related_persons {"filed": "2021-12-02", "persons": [{"last_name": "Mumgaard", "first_name": "Robert", "clarification": null, "relationships": ["Executive Officer", "Director"]}, {"last_name": "Sorbom", "first_name": observed artifact ↗ 2021-12-02 normalized 0.99
sector emerging derived calc 2026-09-28 normalized 0.50
signal.attributed_claims 1 observed intelligence.claims 2026-09-26 parsed 0.90