Alexei Litvinsev
Managing Partner at Castellum Capital Partners
Kensington, England
Alexei Litvinsev, Managing Partner at Castellum Capital Partners is an active investor based in Kensington, England. This profile covers what Alexei Litvinsev backs, at which stage, and how founders can reach out in 2026.
Founder and Chief Investment Officer and Managing Partner at Castellum Capital Partners.
Alexei Litvinsev typically invests at Series B and Late Stage Venture.
- Investor type
- PE
- Stages
- Series BLate Stage Venture
- Location
- Kensington, England
- Typical check
- $5M
How to reach Alexei Litvinsev
Angels and operators like Alexei Litvinsev 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.
Reach active investors like this one
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. "Alexei Litvinsev." Round Funded investor database, updated November 3, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/alexei-litvinsev
Frequently Asked Questions
Who is Alexei Litvinsev?
Alexei Litvinsev, Managing Partner at Castellum Capital Partners is an active investor based in Kensington, England. Alexei Litvinsev typically invests at Series B and Late Stage Venture.
What stage does Alexei Litvinsev invest at?
Alexei Litvinsev typically invests at Series B and Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is Alexei Litvinsev's typical check size?
Alexei Litvinsev typically writes checks around $5M. 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.