Peter Iwanowicz, Principal at Sirios Capital Management is an active investor based in Boston, Massachusetts. This profile covers what Peter Iwanowicz backs, at which stage, and how founders can reach out in 2026.
Has held Principal, Director and Analyst roles at Sirios Capital Management and holds the CFA designation.
Peter Iwanowicz typically invests at Late Stage Venture.
- Investor type
- Investment Partner
- Stages
- Late Stage Venture
- Location
- Boston, Massachusetts
- Typical check
- $7M
How to reach Peter Iwanowicz
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Round Funded. "Peter Iwanowicz." Round Funded investor database, updated November 3, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/peter-iwanowicz
Frequently Asked Questions
Who is Peter Iwanowicz?
Peter Iwanowicz, Principal at Sirios Capital Management is an active investor based in Boston, Massachusetts. Peter Iwanowicz typically invests at Late Stage Venture.
What stage does Peter Iwanowicz invest at?
Peter Iwanowicz typically invests at Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is Peter Iwanowicz's typical check size?
Peter Iwanowicz typically writes checks around $7M. 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.