Mike Seiman
Angel investor in Oyster Bay
Oyster Bay, New York
Mike Seiman, Angel investor in Oyster Bay is an active investor based in Oyster Bay, New York. This profile covers what Mike Seiman backs, at which stage, and how founders can reach out in 2026.
- Investor type
- Angel
- Stages
- Pre SeedSeed
- Invests in
- Healthcare & BiotechBiotech & PharmaConsumer & RetailIoT & Connected DevicesFoodTech & AgricultureFood & BeverageMedia & ContentMarketing & AdTech
- Location
- Oyster Bay, New York
- Typical check
- $150K
- Past investments
- 22
Notable investments
Vouch Financial
STAQ
SkyKick
Worklife
Contactually
MD Insider
FormaFinaKona IcesChaos Squared
Glio
BabylistCPX InteractiveHow to reach Mike Seiman
Angels and operators like Mike Seiman 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 Accelerator.
Connect with Mike Seiman
Frequently Asked Questions
What does Mike Seiman invest in?
Mike Seiman invests in Healthcare & Biotech, Biotech & Pharma, Consumer & Retail and IoT & Connected Devices, typically at Pre Seed and Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does Mike Seiman invest at?
Mike Seiman typically invests at Pre Seed and Seed. Lead with traction that fits the stage when you reach out.
What is Mike Seiman's typical check size?
Mike Seiman typically writes checks around $150K. Use it as a signal for whether your raise fits their stage.
How do I contact Mike Seiman?
Unlock Mike Seiman's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.