Updated:
Sag Harbor Capital Management, LLC
Sag Harbor Capital Management is a Greenwich-based alternatives manager deploying capital across real estate, private credit, and infrastructure since...
Sag Harbor Capital Management, LLC
Sag Harbor Capital Management was founded in 2005 by Jonathan Lieberman and Michael Goldstein. The firm operates as an alternative asset manager, not a family office, though its principals have deep ties to family and institutional capital sources. Lieberman previously held roles at Soros Fund Management and Goldman Sachs; Goldstein's background includes leadership at Centerline Capital Group (per public record). The firm targets real estate, private credit, and infrastructure investments — emphasizing direct deals and co-investments with institutional partners. Sag Harbor focuses on middle-market opportunities in North America, with particular interest in value-add real estate and asset-backed credit. Known investments include a $150 million financing for a portfolio of self-storage facilities and a $75 million mezzanine loan for a multifamily property in the Southeast (per SEC filings, 2022). The firm structures investments through separate accounts and commingled vehicles. Sag Harbor does not disclose AUM or team size. The firm maintains a single office in Greenwich, Connecticut. No philanthropic foundation or operating company is publicly identified. In December 2023, Sag Harbor closed a $200 million credit fund focused on bridge lending to commercial real estate owners (per the firm, December 2023). Unlike many alternative managers, Sag Harbor operates with a lean team and a focused mandate — avoiding sector sprawl. The firm does not run a formal family office structure or pool external LP capital from a broad base, concentrating instead on a small number of institutional and high-net-worth relationships. Its governance is opaque, with no succession plan or operating-company parent on record.
General information
Firm type
Asset Manager
Year founded
2005
AUM
Undisclosed
Location
Region
North America
Country
United States
City
Greenwich
Corporate office
Greenwich, CT, United States
Principals
Jonathan Lieberman
Chief Investment Officer
Michael Goldstein
Chief Executive Officer
Sector focus
Frequently asked questions
Who runs investment decisions at Sag Harbor Capital Management?
Jonathan Lieberman serves as Chief Investment Officer and Michael Goldstein as Chief Executive Officer. Lieberman shapes the firm's direct investment strategy across real estate and credit; Goldstein oversees operations and client relationships. Both founded the firm in 2005 (per public record).
How does Sag Harbor source proprietary deal flow?
Sag Harbor relies on a network of relationships with banks, brokers, and institutional partners to source middle-market real estate and credit deals. The firm does not operate a large origination team or a public deal-sourcing platform, instead pursuing select opportunities where it can add underwriting or structuring expertise.
Is Sag Harbor structured as a family office or an independent asset manager?
Sag Harbor is an independent asset manager, not a family office. The firm manages capital for institutional investors including pension funds, endowments, and family offices. Its principals do not publicly represent a single-family wealth pool, and the firm's AUM comes from multiple limited partners (per the firm's SEC filings).
What investment stages does Sag Harbor typically target?
Sag Harbor focuses on middle-market direct investments and co-investments in real estate, private credit, and infrastructure. The firm targets value-add real estate transactions, bridge or mezzanine lending, and asset-backed credit structures. It does not typically engage in venture-stage or early-stage equity investments.
Does Sag Harbor participate in fund commitments or only direct deals?
Sag Harbor structures its capital deployment through a mix of direct investments and commingled funds. In 2023, the firm closed a $200 million credit fund for commercial real estate bridge lending, demonstrating its capacity to pool LP capital for a specific strategy. The firm also executes separate-account mandates for select clients.
Which sectors does Sag Harbor explicitly avoid?
Sag Harbor does not publicly disclose a list of avoided sectors, but its known investments are concentrated in real estate, credit, and infrastructure. The firm does not appear to invest in early-stage technology, healthcare, or energy-transition projects, based on public records. Its narrow mandate suggests a preference for asset-backed, cash-flow-generating opportunities.
Where does the underlying wealth come from for Sag Harbor's principals?
Sag Harbor's founders, Jonathan Lieberman and Michael Goldstein, do not publicly disclose personal wealth origins. Lieberman's prior roles at Soros Fund Management and Goldman Sachs indicate a career in finance; Goldstein's background includes real estate lending at Centerline Capital Group. Neither has disclosed family-enterprise wealth (per public record).
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
Need institutional-grade insight on registered investment advisers?
Altss delivers:
Prefer a guided tour?
We’ll walk you through: