Louis Toth
Managing Partner at Alter Venture Partners
San Francisco, California
Louis Toth, Managing Partner at Alter Venture Partners is an active investor based in San Francisco, California. This profile covers what Louis Toth backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCPEInvestment Bank
- Stages
- Pre SeedSeedSeries ASeries BLate Stage Venture
- Invests in
- SaaS & EnterpriseHardware & Deep TechArtificial IntelligenceFintechMedia & ContentE-commerce & D2CDeveloper Tools & DataCybersecurity
- Location
- San Francisco, California
- Typical check
- $1M
- Past investments
- 44
Notable investments
VitrueVideonTANDBERG TV Former SkyStream NetworksHalf.comLilac CloudImmedia Semiconductor
Broadbus TechnologiesBNI VideoDataPelagoArroyo Video Solutions
Banyan Security
Maginatics, IncHow to reach Louis Toth
Angels and operators like Louis Toth 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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Round Funded. "Louis Toth." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/louis-toth
Frequently Asked Questions
What does Louis Toth invest in?
Louis Toth invests in SaaS & Enterprise, Hardware & Deep Tech, Artificial Intelligence and Fintech, typically at Pre Seed, Seed, Series A and Series B. Match your sector and stage, then reach out with a personalized pitch.
What stage does Louis Toth invest at?
Louis Toth typically invests at Pre Seed, Seed, Series A and Series B. Lead with traction that fits the stage when you reach out.
What is Louis Toth's typical check size?
Louis Toth 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.