Gustaf Alstromer
Group Partner at Y Combinator
San Francisco, California
Gustaf Alstromer, Group Partner at Y Combinator is an active investor based in San Francisco, California. This profile covers what Gustaf Alstromer backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCPEInvestment PartnerFounderAccelerator
- Stages
- Early Stage VentureSeed
- Invests in
- SaaS & EnterpriseMarketplaceMobility & LogisticsFintech
- Location
- San Francisco, California
- Typical check
- $375K
- Past investments
- 5
Notable investments
SunriseYesGraph
LinearTictailFazz FinancialHow to reach Gustaf Alstromer
Angels and operators like Gustaf Alstromer 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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Cite this page
Round Funded. "Gustaf Alstromer." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/gustaf-alstrmer
Frequently Asked Questions
What does Gustaf Alstromer invest in?
Gustaf Alstromer invests in SaaS & Enterprise, Marketplace, Mobility & Logistics and Fintech, typically at Early Stage Venture and Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does Gustaf Alstromer invest at?
Gustaf Alstromer typically invests at Early Stage Venture and Seed. Lead with traction that fits the stage when you reach out.
What is Gustaf Alstromer's typical check size?
Gustaf Alstromer typically writes checks around $375K. 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.