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Arthur Ventures | RoundOS

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Arthur Ventures

Activity from announced rounds

Activity in this selection View all activity

Activity in this selectionFeb 28, 2026 · Cybersecurity · Feb 1, 2026

Rounds participated in: 2
Confirmed lead rounds: —
New companies: 2
Funding in participating rounds: $26M

By stage

Series A1

Series C+1

By primary sector

Cybersecurity2

By country

United States2

Rounds

2 in this selection

Feb 24

Cybersecurity software that analyzes physical security risks across enterprise facilities

$6MSeries A

Role not disclosed

Feb 11

Nucleus Security

Provides unified vulnerability and exposure management for enterprises

$20MSeries C

Role not disclosed

1–2 of 2

Most frequent co-investors

11 Tribes1 shared Delta-v Capital1 shared Roll Tack Ventures1 shared Tamiami Angel Funds1 shared

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

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

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