Stability AI

Creator of Stable Diffusion, the open-source image generation model downloaded 100M+ times. Company has restructured under new CEO Prem Akkaraju after founder Emad Mostaque resigned in March 2024; secured a new investment round and licensing deals with major media companies. Stable Diffusion 3.5 released Oct 2024.

AI🇺🇸 GBFounded 2019ISO/NSO equitystability.ai ↗

Compare ⇄Calculate →

Reviewed May 24, 2026 (2d ago)

Current estimate

4 methods · May 24, 2026High confidence (57%)

$1.0B

range $0.7B – $1.3B

Implied per-share: $6.3 · vs last primary +1%

This estimate reflects what informed investors are paying on secondary markets like Hiive and Forge — not the 409A valuation on your grant letter.

Last primary round

$1B

Recapitalisation · 21mo ago

Secondary signal

$1.0B

Forge · 2026-04+4%

Sourced from Forge/Hiive public data. Full order books require a paid subscription; figures shown are best-effort from public disclosures.

Headcount

employees · LinkedIn-47%

LinkedIn count — directional proxy only. Historical figure sourced via Wayback Machine; treat ±15% as normal variance.

Revenue (est.)

$30M

annual run rate · est.

ℹ

Company restructured in 2024 after founder departure; recapitalisation at estimated $1B. Distressed equity — high uncertainty.

Complete company data

Every input we use, where we got it from, and how much we trust it.

Field	Value	Source	Confidence
Company fundamentals
Sector	AI	Editorial classification	high
Headquarters	🇺🇸 GB	Company website · Crunchbase	high
Founded	2019	Company website · Wikipedia	high
Website	stability.ai	Direct	high
Latest primary round
Post-money valuation	$1B	Bloomberg Sep 2024	high
Round name	Recapitalisation	Bloomberg Sep 2024	high
Date	2024-09-01 (21 months ago)	Bloomberg Sep 2024	high
Lead investor	Undisclosed	Bloomberg Sep 2024	high
Amount raised	$80M	Bloomberg Sep 2024	medium
Capitalization
Total fully-diluted shares	160M	SEC Form D · secondary price math · cap-table leaks › notes Public total fully-diluted share count: estimated from SEC Form D filings, secondary-market pricing math (implied valuation ÷ price per share), and leaked cap-table summaries. Considered the lowest-confidence input.	low
Implied share price (latest primary)	$6	Valuation × 1000 / share count (= $1B ÷ 160M)	medium
Primary equity type granted	ISO/NSO	Public reports of company equity practices	high
Financials
Annual revenue (est.)	$30M	Sacra · The Information · press leaks › notes Annual revenue: best public estimates from Sacra, The Information, WSJ leaks, or company-stated ARR. Where official, we cite the source on the funding round.	medium
EV / Revenue (implied)	33.3x	Computed from valuation ÷ revenue	medium
Headcount
Employees (now)	80	LinkedIn — current company page count › notes Headcount: LinkedIn 'Company' page employee count, taken now and approximately 12 months ago via the Wayback Machine. Treat as a directional proxy for revenue growth, not a hard number.	medium
Employees (12 months ago)	150	LinkedIn via Wayback Machine	medium
12-month headcount growth	-47%	Computed	medium
Methodology inputs
Sector ETF proxy	BOTZ	Editorial choice — most representative public ETF › notes Sector ETF: editorial choice of the most representative public-market proxy. Annual return: 3-year trailing average from Yahoo Finance, refreshed quarterly.	medium
ETF annual return (trailing 3-yr)	14%	Yahoo Finance · refreshed quarterly	medium

Funding history

Primary rounds reported in Bloomberg, WSJ, TechCrunch, Reuters, or SEC Form D filings (efts.sec.gov). Linked per round below.

Valuation progression (equity rounds)

Valuation progression · equity rounds

$1.0Blatest · Recapitalisation

Total growth

1×

Primary round

Down round

Recapitalisation+0%2024-09-01

$1.0B

Led by Undisclosed · raised $80M

Source: Bloomberg Sep 2024

Convertible Note+0%2023-06-01

$1.0B

Led by Intel Capital · raised $25M

Source: TechCrunch Jun 2023

Series A2022-10-17

$1.0B

Led by Coatue · raised $101M

Source: TechCrunch Oct 2022

Secondary market signals

Secondary market signals: bid/ask/trade indications from Hiive (hiive.com), Forge Global, Caplight Index, and tender prices reported in the press.

Implied valuation over time

Implied valuation · secondary market

$1.0B+8% vs first recorded

Trade

⚠

Forge and Hiive publish aggregated market data publicly, but full order books, individual bids/asks, and confirmed trade prices require a paid account. The figures below are sourced from their public summaries, press-reported tender prices, and SEC disclosures. They represent the best publicly available signal — not a guaranteed executable price.

Date	Type	Source	Price / share	Implied valuation
2026-04-16	trade	Forge	$7	$1.0B
2026-02-12	trade	Hiive	$6	$1.0B

View live indications: Hiive ↗ · SEC Form D filings ↗

Public peer comparables

Public peer comparables: editorial selection of public companies with the closest business model. EV/Revenue and growth from public 10-Q filings and Bloomberg, refreshed quarterly.

Ticker	Company	EV / Revenue	Revenue growth	As of
CRWD	CrowdStrike Holdings, Inc.	35.09x	+23%	2026-05-20
MDB	MongoDB, Inc.	10.66x	+27%	2026-05-20
NET	Cloudflare, Inc.	32.81x	+34%	2026-05-20
NVDA	NVIDIA Corporation	20.57x	+85%	2026-05-20
PLTR	Palantir Technologies Inc.	62.81x	+85%	2026-05-20

Confidence breakdown

How much we trust each of the four valuation methods for this specific company, and why.

Method A — Peer-multiple

weight 25%→ $0.7B75% confidence

Growth-weighted peer EV/Revenue: 36.6x → 35% private-company discount → 23.8x on $30M revenue

Method B — Secondary-implied

weight 45%→ $1.0B55% confidence

Recency-weighted average of 2 secondary indications (180-day decay)

Method C — Primary time-decay

weight 20%→ $1.3B50% confidence

$1B round (2024-09-01) × 1.37× growth × 0.91× multiple decay over 1.7 years

Method D — Sector momentum

weight 10%→ $1.3B34% confidence

$1B × (1 + 14% p.j.)^1.7yr = $1.3B via BOTZ ETF-proxy

Overall confidence

57%

Weighted average of the four methods. Above 65% is high, 40–65% medium, below 40% low.

High

Worked example for an employee

A concrete walk-through using a hypothetical employee profile. Same engine the calculator uses — try it with your real numbers.

Profile: a hypothetical employee who joined Stability AI 24 months ago (2024-05-26) with 2,000 options, on the standard 4-year vesting schedule with a 1-year cliff.

Vesting

1,000 of 2,000

50% vested at month 24

Implied share price (mid)

weighted average of 4 methods

Gross vested value

$6,315

vested shares × implied price

Net value

$6,315

no strike, gross = net

Tax (rough)

$632

US federal only · AMT risk: low

What if the next round is…

Up round +30%

$7,139

New round at +30% valuation, 15% new shares issued

Down round −30%

$3,684

New round at −30% valuation, 20% new shares (higher dilution in distress)

Secondary today

$5,368

Sale on the secondary market at the typical 15% discount to the mid estimate

These numbers come from the same engine as the live calculator. Walk through with your own grant: use your real numbers →

Transparent assumptions

What we assumed where exact data isn't available. If any of these don't match your situation, the numbers above will be off.

Fully-diluted share count

160M shares

We don't have authoritative cap-table access for private companies. The number above is reconstructed from SEC Form D filings, secondary-market price-vs-valuation math, and leaked share-class summaries. Actual fully-diluted count (including unvested option pool and SAFEs) may differ by 5–15%.

Common-stock waterfall

1.0× to common

We assume a clean common-stock outcome — i.e. preferred-share liquidation preferences and ratchets do not extract value before common. In a down-exit, this assumption can be very wrong: preferred stack can take 30–70% of proceeds.

Private-company illiquidity discount

35% off public peers

Applied to Method A (peer-multiple). Per-company because category leaders with deep secondary markets and a clear IPO path warrant a smaller discount than early-stage names. The literature range is 10–35%; for Stability AI we use 35% based on secondary-market depth, valuation history, and proximity to liquidity.

Revenue growth assumption (Method C)

20% YoY

Compounded forward from the last primary date to today to estimate the company's value drift. Set per-company based on disclosed or reported ARR trajectory. Method C is further capped at 1.3× the most recent secondary trade (if any) to stop runaway extrapolation when revenue growth outpaces what the market is actually paying.

Sector ETF momentum (Method D)

BOTZ @ 14%/year

Method D applies the trailing return of BOTZ as a market-proxy adjustment to the primary valuation. Crude — meant as a tiebreaker when peer and secondary data conflict, not as a primary signal.

Outlier auto-downweight

Methods >50% from median get ½ weight

Robust-statistics safety net: any method whose output strays more than 50% from the median of the other three methods has its confidence weight halved when computing the blended mid-point. Prevents a single bad extrapolation from dragging the headline.

Recency decay for secondary trades

180-day half-life (e⁻ᵈ/¹⁸⁰)

A trade from 30 days ago counts ~5× more than one from 180 days ago. Tunable; some platforms use shorter half-lives.

Tax estimate

US federal only, single filer

Uses 2024 US federal brackets, ignoring state tax, NIIT, AMT credit recovery, and any other deductions. Treat as a directional sanity check, not a tax bill.

All data from public sources. Not investment, tax, or legal advice. Not affiliated with Stability AI. Last refreshed manually — see methodology for our update cadence.