Isthmus Partners is a family office - multi based in Madison, United States. Verified contact details, AUM data, and investment preferences on FindLPs.
We serve clients through comprehensive financial advisory services paired with tailored investment management focused on long-term growth and capital preservation. We invest across large and small cap core equity securities.
Investment types: Joint Venture/Partner, Private Equity, Small-Cap/Micro-Cap Fund, Large-Cap Fund, Growth Capital
Sectors & themes: Wealth & Estate Planning, Trust Management, Legal & Tax Services, Investment Management Finance, Financial Services
Preferred geographies: United States
Location: One South Pinckney Street Suite 818\nMadison\nWisconsin\n53703\nUnited States
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LP firm data compiled from public regulatory filings (SEC Form ADV, FCA, AIFMD disclosures), company websites and press releases, LinkedIn public profiles, and verified outbound email testing. AUM figures reflect self-reported values from filings and may lag by 1–2 fiscal quarters; bands are normalized in USD. We do not publish personal residential information; firms or individuals may request removal at /contact. Methodology & sources · Updated July 2026.