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Span.IO, Inc.

Span.IO, Inc.

Private
San Francisco, CaliforniaEnergy & Sustainabilityhttps://www.span.io/

Last Round

Strategic

Mar 9, 2026

Est. Valuation

$600M

Total Funding Raised

$479.7M

Momentum

Top 50%

of companies Caplight tracks

Company Overview

Span.IO, Inc. is an energy and sustainability company that develops and manufactures smart electrical panels and home energy management products to facilitate residential electrification.

Sector

Energy & Sustainability

Verticals

Energy Management, Smart Grid, Edge Computing, EV Charging, Smart Buildings

Business Model

B2B

Customer Profile

Hardware Sales, Usage-Based SaaS

AI Layer

Infrastructure

Keywords

smart electrical panelhome energy managementdistributed computeedge computingdistributed data centerEV charging integrationcircuit-level monitoringresidential electrificationsmart gridai infrastructuredecentralized computeenergy load managementhardware-enabled softwareenergy techdistributed infrastructure

Historical Pricing

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Caplight Momentum Score

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Span.IO, Inc. Comparables

Compare Span.IO, Inc. with similar companies based on industry and business-model similarity.

Span.IO, Inc. comparables — related companies by embedding similarity
CompanySimilarityMarket Cap
Savant Systems
79%
ABB India Limited
76%
Schneider Electric
76%

Span.IO, Inc. Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
StrategicMar 9, 2026
Series CJan 15, 2026
Series B ExtensionApr 24, 2023
Series BMar 22, 2022
Series A ExtensionJan 26, 2021
Series A
May 12, 2020

Key People

Founding team and executive leadership

Arch Rao

Founder CEO

Founding Team

Douglas Booms

Chief Operating Officer

Executive Team

Span.IO, Inc. Investors

Notable investors and investment history

Span.IO, Inc. investors
InvestorRounds
Wells Fargo Strategic CapitalSeries A Extension, Seed, Series A
Capricorn Investment GroupSeries A Extension, Series B Extension, Series A
Munich Re VenturesSeries B Extension, Series A Extension
SV AngelSeed
Wireframe VenturesSeries A Extension, Series A, Seed
Craft VenturesSeed
Qualcomm VenturesSeries B Extension

Market signals

Structured signals derived from secondary market and firmographic data.

  • Apr 15, 2026

    Partnered with Nvidia to co-develop AI data centers for residential use.

  • Apr 13, 2026

    Launched XFRA, a distributed data center solution for compute capacity.

Span.IO, Inc. Filings

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Span.IO, Inc. filings preview — column headings only; records require access
TypeDateAmount OfferedAmount SoldFilingPagesDownload

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Frequently Asked Questions

Common questions about Span.IO, Inc.'s valuation, stock price, and market status.

Is Span a public or private company?

Span is a private company.

What is the current stock price of Span?

Span is a private company with no public stock price. No recent secondary market data is available.

How much is Span worth (valuation)?

Span's valuation is estimated at $600.0M based on funding round data.

Can I buy Span stock?

Span shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors. Visit https://www.caplight.com to learn more.

When was Span's last funding round?

Span's most recent funding round was Corporate Funding on April 24, 2023.

Who are the main investors in Span?

Key investors in Span include Fifth Wall, Wellington Management, ArcTern Ventures, Munich Re Ventures.

Will Span IPO soon?

No public IPO plans have been announced for Span.

How can I track Span secondary market activity?

Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor Span's secondary market activity and sign up for updates.

Firmographic Details

HeadquartersSan Francisco, California
Employee Range204
Year Founded2018
Last FundingMar 9, 2026

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