John P Calamos Sr vs David Helgason

John P Calamos Sr vs David Helgason

John P Calamos Sr is a individual/angel based in Naperville. David Helgason is a individual/angel based in Reykjavík, Gullbringusysla, Iceland across 58 portfolio companies.

• Investor type: John P Calamos Sr — Individual/Angel; David Helgason — Individual/Angel
• Headquarters: John P Calamos Sr — Naperville; David Helgason — Reykjavík, Gullbringusysla, Iceland
• Portfolio companies: John P Calamos Sr — not disclosed; David Helgason — 58

• John P. Calamos, Sr. — Individual/Angel · Naperville · John P Calamos Sr portfolio
• David Helgason — Individual/Angel · Reykjavík, Gullbringusysla, Iceland · 58 tracked deals · David Helgason portfolio

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