QuantLogix's current estimate for Proof (Boston), published 2026-09-27 — below the last disclosed round of $790.9M (2024-Q1).
Confidence
medium
Basis
secondary led
What backs this price
Last disclosed round
$790.9M
2024-Q1
weight 0.18
Secondary market print
$307.66M
2026-06-27
weight 0.58
How this price has held up
No round has priced for Proof (Boston) since QuantLogix began publishing a price for it, so there is nothing to grade yet. The claim above is on the record from 2026-09-27 and will be graded against the next priced round. See the full accuracy record →
Which publicly-traded funds already hold it, what $10,000 buys, and whether any route is open to you.
Cite this price as QuantLogix QL Price, Proof (Boston), 2026-09-27 (3fe5941f7cd2dcde).
The id pins this exact claim, so a citation stays checkable after the price moves.
Model estimate for research — not a quote, target price, or investment advice.
IPO Outlookprivate
Is Proof (Boston) going public?
No. Proof (Boston) is private and has not filed to go public. There is no S-1 on file.
What is Proof (Boston)'s valuation in 2026?
Proof (Boston) is valued at $790.9M as of 2024-Q1, set by its Later Stage VC ($30.9M, Feb 2024). That is the last confirmed mark, not a live price — private shares do not trade continuously.
Has Proof (Boston) filed an S-1?
No public S-1 is on file for Proof (Boston).
How much has Proof (Boston) raised?
Proof (Boston) has raised $243.75M in total, most recently a Later Stage VC of $30.9M in Feb 2024.
Is Proof (Boston) publicly traded — can you buy Proof (Boston) stock?
No. Proof (Boston) is a private company — its shares are not listed on any exchange and there is no ticker. The routes to exposure are pre-IPO secondary marketplaces and funds (accredited investors), employee tender offers when the company runs one, and public companies with read-through exposure. QuantLogix maps every route it can verify for Proof (Boston) on its Pre-IPO Access Desk.
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
Founded
2015
HQ
Boston, MA
Employees
409
Total Raised
$243.75M
Last Round
Later Stage VC — $30.9M (Feb 2024)
IPO Status
private
Fundraising Status
Later Stage VC · $30.9M · 2y 7mo ago
privateTotal raised $243.75M
Secondary Market
Implied price / share
$7.03
Last round price / share
$18.09
vs last round
-61.1%
Last round price vs secondary price
Secondary price return by period
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
Round
Amount
Date
Lead Investor
Post-Money
Later Stage VC
$30.9M
Feb 2024
—
$790.9M
Talent Signal
Hiring trend
▲ Hiring uptrend
+900% vs 2026-08
Open roles
10
via careers page
Product-build share
30%
engineering, research, product, design
Trajectory
expanding
balanced build + GTM — 30% builders vs 70% go-to-market/G&A — scaling both sides.
No tracked executive churn; open roles trending up.
Open roles by month
Open roles by function
■ product-building ■ go-to-market / G&A
Verified Payments\\ \\ Security for digital paymentsDeveloper Docs[Developer Docs](https://dev.proof.com/)Financial servicesTalk to sales[Financial services](https://www.proof.com/industries/financial-services)
Counted from Proof (Boston)'s live job board as of 2026-09-16; role functions classified from posting titles. Open-role counts are an activity signal, not headcount. Refreshed monthly.
SoftwareLegalLegal Tech
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of 2024-Q1. Refreshed quarterly.