Leah von Siemens
Partner at Manta Ray
London, England
Leah von Siemens, Partner at Manta Ray is an active investor based in London, England. This profile covers what Leah von Siemens backs, at which stage, and how founders can reach out in 2026.
- Investor type
- VCPEInvestor
- Stages
- Series A
- Invests in
- Impact & Social Enterprise
- Location
- London, England
- Typical check
- $1M
How to reach Leah von Siemens
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Round Funded. "Leah von Siemens." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/leah-von-siemens
Frequently Asked Questions
What does Leah von Siemens invest in?
Leah von Siemens invests in Impact & Social Enterprise, typically at Series A. Match your sector and stage, then reach out with a personalized pitch.
What stage does Leah von Siemens invest at?
Leah von Siemens typically invests at Series A. Lead with traction that fits the stage when you reach out.
What is Leah von Siemens's typical check size?
Leah von Siemens 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.