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01 · Free data roomBuild, share and track important documents.

Data room analytics Document Analytics Pitch Deck Tracking Secure sharing Permissions NDA & agreements Watermarking Versions Branding

View all Data Room features →

02 · AI Fundraising CRMRun the work between investor meetings.

Today & next moves Follow-up Investor research Investor CRM Investor updates Imports & sources

View all Operator features →

See it workingOpen a live roomWalk a real RoundOS room.

Pricing Security

Deal rooms

Startups Venture capital M&A data room Investor relations

Beyond fundraising

Sales deals Board documents Due diligence Real estate

Fundraising

Fundraising hub Pre-seed Seed Series A

Learn

Blog Funding Customer stories Investor room template

Compare

All alternatives Best free data rooms Best DocSend alternatives Digify alternative iDeals alternative

Free tools & templates

Calculators and fundraising tools. No signup.

SAFE, dilution, runway, pipeline coverage, investor fit.

Sign inExploreData Room AI Fundraising CRM Pricing Security Document Analytics Pitch Deck TrackingData Room featuresData room analytics Secure sharing Permissions NDA & agreements Watermarking Versions BrandingUse casesFundraising hub Startups Venture capital M&A data room Investor relations Sales deals Board documents Due diligence Real estate Pre-seed Seed Series AOperatorToday & next moves Follow-up Investor research Investor CRM Investor updates Imports & sourcesMoreCustomer stories All alternatives Best free data rooms Investor room template Free tools Blog Funding Integrations

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Funding/Investors/One Madison Group

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OM

One Madison Group

Activity from announced rounds

Activity in this selection View all activity

All recorded activity

Rounds participated in: 2
Confirmed lead rounds: —
New companies: 2
Funding in participating rounds: $325M

By stage

Series B1

Undisclosed1

By primary sector

Defense tech1

Robotics1

By country

United States2

Rounds

2 in all activity

Jul 15

Walden Robotics

A full-stack Physical AI company building and deploying general-purpose robots that continuously learn and improve while performing real work

$300MUndisclosed

Role not disclosed

May 4

ANELLO Photonics

Makes silicon photonics optical gyroscopes for high-precision inertial navigation in GPS-denied environments

$25MSeries B2

Role not disclosed

1–2 of 2

Most frequent co-investors

AE Ventures1 shared Boeing1 shared Calibrate Ventures1 shared Catapult Ventures1 shared Colle Capital1 shared CoreWeave Ventures1 shared Deviation Capital1 shared IronGate Capital1 shared KAS Venture Partners1 shared Lockheed Martin Ventures1 shared

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RoundOS

A free data room for modern deals, with an AI operator that runs the fundraise.

Create a free room

01 · Explore

Data Room AI Fundraising CRM Pricing Security Document Analytics Pitch Deck Tracking

02 · Data Room

Data room analytics Secure document sharing Data room permissions NDA & agreements Dynamic watermarking Document versions Custom branding

03 · Operator

Fundraising hub Pre-seed fundraising Seed fundraising Series A fundraising Fundraising follow-up Investor research Investor updates Integrations

04 · Use cases

Startup data room VC and LP data room M&A data room Due diligence data room Investor relations Sales data room Board documents Real estate data room

05 · Free tools

All free tools SAFE calculator Dilution calculator Runway calculator Pipeline coverage Investor fit checker Follow-up generator Round leak audit

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All alternatives DocSend alternative Digify alternative Google Drive alternative Dropbox alternative Best DocSend alternatives Best free data rooms Investor room template Blog Customer stories Funding News Open a live room

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