Asset ManagerRIA · CRD 148984SEC-RegisteredPrivate Fund Adviser

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Rosemawr Management

Rosemawr Management is an SEC-registered investment adviser in Miami Beach, FL, since 2009. The firm manages approximately $844 million in assets.

Rosemawr Management logo

Rosemawr Management

Rosemawr Management is an SEC-registered investment adviser in Miami Beach, FL, since 2009. The firm manages approximately $844 million in assets. It has 23 employees and 12 investment advisers.

General information

Firm type

Generalist

Year founded

2008

AUM

Undisclosed

Location

Region

North America

Country

United States

City

Miami Beach

Corporate office

Miami Beach, FL, United States

Additional offices

New York, NY

Principals

Greg Shlionsky

Founder & Portfolio Manager

Julie Morrone

Director of Research

James Lister

Director of Origination & Investor Relations

B.Z. Halberstam

Chief Operating Officer

Joshua Herlands

Managing Partner, Rosemawr Sustainable Infrastructure Management

Seth Klempner

Principal

Jenny Chien

Chief Financial Officer

Jaclyn Durney

Director of Operations

Sector focus

InfrastructureEducationEnergy Transition & Renewables

Frequently asked questions

Who runs investment decisions at Rosemawr Management?

Greg Shlionsky, the firm’s founder, serves as Portfolio Manager and leads the investment team. Julie Morrone directs research, while Joshua Herlands oversees the dedicated Rosemawr Sustainable Infrastructure Management division. The team structure suggests Shlionsky retains final authority on portfolio construction across the firm’s municipal, not-for-profit, and infrastructure strategies.

What does Rosemawr actually invest in?

The firm concentrates on three US-focused sectors: municipal finance, not-for-profit institutions, and sustainable infrastructure. Within municipals, a significant portion targets charter-school facilities. The sustainable-infrastructure book, which now includes an evergreen lending vehicle, finances secured loans against solar, wind, and other sustainable power projects.

Does the firm raise closed-end funds or open-ended vehicles?

Rosemawr has historically raised closed-end funds — six private capital funds since 2012, plus a charter-school co-investment vehicle and a charter-school management-company fund. In September 2025, it introduced its first open-ended structure, an Evergreen Fund designed for sustained lending to sustainable power projects.

Where does Rosemawr source its deal flow?

The firm originates directly from relationships with municipal issuers, not-for-profit organizations, and sustainable-infrastructure developers. James Lister, the Director of Origination & Investor Relations, runs that process, which leans on the team’s longstanding presence in niche credit markets rather than brokered auctions.

Is Rosemawr a single-family office or an asset manager?

It is a registered investment adviser structured as an asset manager, not a family office. The firm does not disclose a single-family wealth source, and its principals operate multiple pooled investment vehicles for external capital.

Does the firm co-invest alongside external general partners?

Rosemawr often structures its deployments as direct co-investments or bilateral credit facilities rather than committing to third-party managed funds. The charter-school co-investment fund and the closed-end private capital series both execute direct deals alongside select counterparties, reflecting a principal-to-principal posture.

How is the sustainable infrastructure division structured?

Joshua Herlands runs Rosemawr Sustainable Infrastructure Management as a dedicated vertical within the firm, with its own product — the 2025-launched Evergreen Fund — and a mandate for secured lending against sustainable power assets. This sits alongside the legacy municipal and not-for-profit funds under Greg Shlionsky’s broader portfolio management.

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