Ido Sum
Angel investor in London
London, England
Ido Sum, Angel investor in London is an active investor based in London, England. This profile covers what Ido Sum backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCPEInvestor
- Stages
- Series A
- Invests in
- Artificial IntelligenceMobility & LogisticsTelecom & ConnectivitySaaS & EnterpriseFintech
- Location
- London, England
- Typical check
- $1M
- Past investments
- 6
Notable investments
Ilara HealthAirlines Wimax Communication LTD.
Kobo360Terragon GroupMovirtuOkraHow to reach Ido Sum
Angels and operators like Ido Sum reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded.
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About this profile
This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise. How this data is built.
Cite this page
Round Funded. "Ido Sum." Round Funded investor database, updated September 24, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/ido-sum
Frequently Asked Questions
What does Ido Sum invest in?
Ido Sum invests in Artificial Intelligence, Mobility & Logistics, Telecom & Connectivity and SaaS & Enterprise, typically at Series A. Match your sector and stage, then reach out with a personalized pitch.
What stage does Ido Sum invest at?
Ido Sum typically invests at Series A. Lead with traction that fits the stage when you reach out.
What is Ido Sum's typical check size?
Ido Sum typically writes checks around $1M. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.