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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
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
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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