Dan Siroker
Angel investor in Denver
Denver, Colorado
Dan Siroker, Angel investor in Denver is an active investor based in Denver, Colorado. This profile covers what Dan Siroker backs, at which stage, and how founders can reach out in 2026.
- Investor type
- Angel
- Stages
- Pre SeedSeed
- Invests in
- Healthcare & BiotechSaaS & EnterpriseConsumer & RetailConsumer Goods (CPG)CybersecurityHardware & Deep TechIoT & Connected DevicesEdTech
- Location
- Denver, Colorado
- Typical check
- $150K
- Past investments
- 5
Notable investments
HaystackNavattic
Obama for AmericaHow to reach Dan Siroker
Angels and operators like Dan Siroker 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. "Dan Siroker." Round Funded investor database, updated September 8, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/dan-siroker
Frequently Asked Questions
What does Dan Siroker invest in?
Dan Siroker invests in Healthcare & Biotech, SaaS & Enterprise, Consumer & Retail and Consumer Goods (CPG), typically at Pre Seed and Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does Dan Siroker invest at?
Dan Siroker typically invests at Pre Seed and Seed. Lead with traction that fits the stage when you reach out.
What is Dan Siroker's typical check size?
Dan Siroker typically writes checks around $150K. 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.