# Rosemark Management

Rosemark Management is a Single Family Office based in New York, United States.

## Overview

- **Organization type:** Single Family Office
- **Headquarters:** New York, United States
- **Region:** North America
- **Address:** New York, NY, United States
- **Founded:** 1992
- **Assets under management:** Undisclosed
- **Website:** rosemarkmanagement.com

## Regulatory record

- **Reports private funds:** No

## About

Rosemark Management, Inc. was established in 1992 to oversee the portfolio assembled by Arthur G. Cohen. Cohen developed landmark Manhattan projects including Olympic Tower and One Worldwide Plaza. The firm continues to hold and expand those positions through targeted acquisitions. The portfolio centers on real estate with confirmed holdings that include the Paramount Building at 1501 Broadway in New York, 375 S County Road in Palm Beach, 243 Worth Avenue in Palm Beach, and 340-350 Royal Palm Way in Palm Beach. Additional positions cover Olympic Tower at 641 Fifth Avenue and One Worldwide Plaza at 825 Eighth Avenue. The firm also maintains a digital asset portfolio and two art collections. Geographic reach spans New York and Florida. No public disclosure exists on team size or additional offices. The Arthur G. Cohen Foundation operates as the family's philanthropic vehicle. No operational events from the last twenty-four months appear in available records. The structure remains a direct single-family office without external fund vehicles or co-investor clubs. Ownership and acquisition decisions stay inside the family and its named partners.

## Sectors

- Real Estate

## People

- Remy Cohen — President
- Charles Rosenberg — Managing Partner
- Spencer Schlager — Partner

## Questions

### Who runs investment decisions at Rosemark Management?

Remy Cohen serves as President. Charles Rosenberg acts as Managing Partner. Spencer Schlager participates as Partner in the CS Ventures joint venture.

### Does Rosemark Management participate in fund commitments or only direct deals?

The firm executes direct acquisitions and ownership of real estate assets. No fund commitments are disclosed.

### Does Rosemark Management maintain philanthropic structures?

The Arthur G. Cohen Foundation serves as the family's separate philanthropic vehicle.

### What asset classes does Rosemark Management hold?

Holdings center on commercial, residential, mixed-use, senior living and industrial real estate plus a digital asset portfolio and art collections.

## Related profiles

- [Rosecastle Capital Family Office](https://altss.com/profile/rosecastle-capital-family-office)
- [Rosemont International](https://altss.com/profile/rosemont-international)

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Last updated: 2026-08-10T15:54:10.904Z

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