Deep Fission, Inc. (FISN)

Nasdaq: FISN · Electric Services · Berkeley, CA · filing with the SEC since 2022

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Grade3.9

◀ Past 1.3● Present 3.6▶ Future 6.3

6 est.

Overview Business Financials Grade Forecast Sentiment Ownership People Filings Patents Chart

The grade of Deep Fission, Inc.

Nine metrics read from its own filings, by tense

Headline grade

3.9/10

◀ Past1.325% of the headline

● Present3.645% of the headline

▶ Future6.330% of the headline

All three tenses have at least two readings, so the archetype blend applies as printed.

Of the nine metrics, 3 read as filed from the record and 6 are SI estimates, each with its reasoning, its confidence and what would change it on its card.

◀ Past

What did they actually do?

1.3/1025% of the headline grade · 1 of 3 filed, 2 estimated

Surviving crises

as filed

0.3/10

Has it survived what it has been through?

6 warning events since 2022; the latest 2026-04-09.

weight 45% of this tense · 3rd percentile among 59 sector filers · read for itself

From the record

Deep Fission, Inc.'s filings since 2022 show 6 warning events of 3 kinds: a warning not to rely on past financial statements (8-K item 4.02, the latest 2026-04-09); an auditor change (8-K item 4.01, 4 times, the latest 2026-03-05); a late-report notice (Form NT 10-K or NT 10-Q, the latest 2026-03-31) (its current reports).

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

Track record

SI estimate

5.2/10

What has it actually done, year after year?

SI estimate 5.2/10, confidence 20 of 100 (family median).

weight 22% of this tense · 50th percentile among 51 sector filers · read for its customers

SI estimate Inferred, not read as filed

Why it is an estimate: Fewer than three filed years of revenue on file, so the desk assumes the typical reading of its industry family, the median of 51 members with one.
What the record cannot read: Fewer than three filed years of revenue on file.
How it was reasoned: family median, 51 readings behind it.
Confidence: 20 of 100
What would change it: Its next annual report on file with the inputs replaces this estimate with the filed reading.

From the record

SI estimate, not a filed reading: Deep Fission, Inc.'s track record is put at 5.2 of 10 with a confidence of 20 of 100, because fewer than three filed years of revenue on file, so the desk assumes the typical reading of its industry family, the median of 51 members with one. Its next annual report on file with the inputs replaces this estimate with the filed reading.

Shareholder treatment

SI estimate

0.1/10

How has it treated the people who own it?

SI estimate 0.1/10, confidence 35 of 100 (one part).

weight 33% of this tense · 1st percentile among 57 sector filers · read for its shareholders

SI estimate Inferred, not read as filed

Why it is an estimate: Read from one part only, the share count over the years, which ranks in the bottom 1% of 57 in its family; fewer than two of the parts can be read: the share count over the years, and the cash returned against a positive operating cash flow or net income.
What the record cannot read: Fewer than two of the parts can be read: the share count over the years, and the cash returned against a positive operating cash flow or net income.
How it was reasoned: one part: the share count over the years, the one part on file, ranked among 57 in its family.
Confidence: 35 of 100
What would change it: A filing that carries the missing parts replaces this estimate with the filed reading.

From the record

SI estimate, not a filed reading: Deep Fission, Inc.'s shareholder treatment is put at 0.1 of 10 with a confidence of 35 of 100, because read from one part only, the share count over the years, which ranks in the bottom 1% of 57 in its family; fewer than two of the parts can be read: the share count over the years, and the cash returned against a positive operating cash flow or net income. A filing that carries the missing parts replaces this estimate with the filed reading.

● Present

What are they doing right now?

3.6/1045% of the headline grade · 2 of 3 filed, 1 estimated

Financial health

as filed

3.3/10

Is it financially healthy right now?

ROE -274%: lost 274¢ per shareholder dollar. Leverage 10%: owes 10¢ per asset dollar.

weight 45% of this tense · 33rd percentile among 53 sector filers · read for itself

From the record

Return on equity: in the fiscal year ended 2025-12-31, Deep Fission, Inc. lost about 274 cents for every dollar of shareholders' money. Leverage: it owed about 10 cents per dollar of assets, and net share issuance: its share count grew 152.4% over the year (the filed statements).

What it rests on

what it owes per dollar of assetstop 4% of its family
return on equitybottom 3% of its family
the share count against the year beforebottom 1% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

Industry position

SI estimate

5.3/10

How strong is its position in its industry?

SI estimate 5.3/10, confidence 20 of 100 (family median).

weight 33% of this tense · 50th percentile among 52 sector filers · read for its customers

SI estimate Inferred, not read as filed

Why it is an estimate: No filed revenue on file, so the desk assumes the typical reading of its industry family, the median of 52 members with one.
What the record cannot read: No filed revenue on file.
How it was reasoned: family median, 52 readings behind it.
Confidence: 20 of 100
What would change it: Its next annual report on file with the inputs replaces this estimate with the filed reading.

From the record

SI estimate, not a filed reading: Deep Fission, Inc.'s industry position is put at 5.3 of 10 with a confidence of 20 of 100, because no filed revenue on file, so the desk assumes the typical reading of its industry family, the median of 52 members with one. Its next annual report on file with the inputs replaces this estimate with the filed reading.

Leadership

as filed

1.7/10

What are the people in charge doing?

bottom 17% of 30 in its family for leadership; chief executive since 2025.

weight 22% of this tense · 17th percentile among 30 sector filers · read for its shareholders

From the record

Deep Fission, Inc.'s leadership, from its insiders' filings and its current reports: the chief executive on the record is Muller, Elizabeth (Chief Executive Officer, as filed), filing under that title since 2025-09-09, 1.2 years (bottom 18% of its family); the 12 officers and directors filing in the last fifteen months have been on the record a median of 12 months (bottom 2%); 6 officer or director changes were reported on Form 8-K since 2023-11-13, against the 12 people in charge now (bottom 32%; fewer changes for each person reads higher) (the Form 4 record, its Form 8-K reports). Years count from a person's first filing in the SEC's data sets, which begin in 2006, so each is a floor.

What it rests on

officer and director changes on Form 8-K, against the people in charge6 in three years among 12 peoplebottom 32% of its family
the median years the people in charge have filed1.0 yearsbottom 2% of its family
the chief executive's years on the record1.2 yearsbottom 18% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

▶ Future

What are they set up to do next?

6.3/1030% of the headline grade · 0 of 3 filed, 3 estimated

Room to expand

SI estimate

9.9/10

How much room does it have to grow?

SI estimate 9.9/10, confidence 35 of 100 (one part).

weight 22% of this tense · 99th percentile among 58 sector filers · read for itself

SI estimate Inferred, not read as filed

Why it is an estimate: Read from one part only, cash less debt against assets, which ranks in the top 1% of 58 in its family; the record does not carry two of the four parts: cash less debt against assets, cash from operations less capital spending against revenue, gross margin, research against revenue.
What the record cannot read: The record does not carry two of the four parts: cash less debt against assets, cash from operations less capital spending against revenue, gross margin, research against revenue.
How it was reasoned: one part: cash less debt against assets, the one part on file, ranked among 58 in its family.
Confidence: 35 of 100
What would change it: A filing that carries the missing parts replaces this estimate with the filed reading.

From the record

SI estimate, not a filed reading: Deep Fission, Inc.'s room to expand is put at 9.9 of 10 with a confidence of 35 of 100, because read from one part only, cash less debt against assets, which ranks in the top 1% of 58 in its family; the record does not carry two of the four parts: cash less debt against assets, cash from operations less capital spending against revenue, gross margin, research against revenue. A filing that carries the missing parts replaces this estimate with the filed reading.

Growth drivers

SI estimate

5.1/10

What could actually drive growth from here?

SI estimate 5.1/10, confidence 20 of 100 (family median).

weight 45% of this tense · 50th percentile among 51 sector filers · read for its customers

SI estimate Inferred, not read as filed

Why it is an estimate: The record does not carry three filed years of revenue and two of the four parts: acceleration, the newest year's growth, the growth of research and of capital spending, so the desk assumes the typical reading of its industry family, the median of 51 members with one.
What the record cannot read: The record does not carry three filed years of revenue and two of the four parts: acceleration, the newest year's growth, the growth of research and of capital spending.
How it was reasoned: family median, 51 readings behind it.
Confidence: 20 of 100
What would change it: Its next annual report on file with the inputs replaces this estimate with the filed reading.

From the record

SI estimate, not a filed reading: Deep Fission, Inc.'s growth drivers is put at 5.1 of 10 with a confidence of 20 of 100, because the record does not carry three filed years of revenue and two of the four parts: acceleration, the newest year's growth, the growth of research and of capital spending, so the desk assumes the typical reading of its industry family, the median of 51 members with one. Its next annual report on file with the inputs replaces this estimate with the filed reading.

Expectations vs reality

SI estimate

5.4/10

Did its newest year beat what its own record pointed to?

SI estimate 5.4/10, confidence 20 of 100 (family median).

weight 33% of this tense · 50th percentile among 49 sector filers · read for its shareholders

SI estimate Inferred, not read as filed

Why it is an estimate: The record does not carry four filed years of revenue and two of the three parts: revenue against the prior pace, earnings against the prior average, the margin change, so the desk assumes the typical reading of its industry family, the median of 49 members with one.
What the record cannot read: The record does not carry four filed years of revenue and two of the three parts: revenue against the prior pace, earnings against the prior average, the margin change.
How it was reasoned: family median, 49 readings behind it.
Confidence: 20 of 100
What would change it: Its next annual report on file with the inputs replaces this estimate with the filed reading.

From the record

SI estimate, not a filed reading: Deep Fission, Inc.'s expectations vs reality is put at 5.4 of 10 with a confidence of 20 of 100, because the record does not carry four filed years of revenue and two of the three parts: revenue against the prior pace, earnings against the prior average, the margin change, so the desk assumes the typical reading of its industry family, the median of 49 members with one. Its next annual report on file with the inputs replaces this estimate with the filed reading.

The grade is the company against its own industry, from its filings. It is not a view on the share price. How the grade is made

SI Assistanton FISN · research, not advice