Key Takeaways
- • OceanSound Partners expanded its footprint at 450 Park Avenue by 10,392 square feet, securing a total of 32,032 square feet across three floors (entire 8th, 22nd, and 23rd) under a new five-year lease with SL Green Realty.
- • The expansion represents a material upgrade from OceanSound's previous sublease of 21,640 square feet on the 22nd and 23rd floors, consolidating the firm's presence in one of Midtown Manhattan's premier office towers.
- • Asking rent in the building stood at $170 per square foot as of March 2026; specific lease terms were not disclosed, but the deal reflects continued institutional demand for luxury office space in Manhattan's core.
- • SL Green's 2022 acquisition of 450 Park Avenue for $445 million and subsequent capital investments in building amenities have successfully attracted high-caliber institutional tenants including hedge funds, alternative credit platforms, and principal investing firms.
- • 450 Park Avenue's tenant roster underscores its positioning as a destination for alternative asset managers and financial services firms, with notable occupants including Blue Crest Capital Management, Willow Tree Credit Partners, Garnett Station Partners, and Banco Bradesco.
Summary
New York-based private equity firm OceanSound Partners has materially expanded its occupancy at SL Green Realty's 450 Park Avenue office tower in Midtown Manhattan, securing 32,032 square feet across the entire 8th, 22nd, and 23rd floors under a new five-year lease. The expansion adds more than 10,000 square feet to OceanSound's existing footprint, as the firm previously subleased 21,640 square feet on the 22nd and 23rd floors. The transaction consolidates OceanSound's operations within the trophy Midtown property located at the corner of Park Avenue and East 57th Street.
OceanSound was represented by Savills' John Johnson in the lease negotiation, while SL Green's leasing team—comprising CBRE's Paul Amrich, Neil King, Alex D'Amario, Matthew Dichter, and Brooke Dewing—executed the transaction on behalf of the landlord. While specific rent terms were not disclosed, asking rent in the building was $170 per square foot as of March 2026, according to Commercial Observer's prior reporting. The lease reflects sustained institutional demand for premium office space in Manhattan's core financial districts despite broader market volatility.
SL Green acquired 450 Park Avenue in April 2022 from Oxford Properties and Crown Acquisitions for $445 million. Following the acquisition, the landlord invested in capital improvements and building amenities, which have proven instrumental in attracting institutional-grade tenants. Steven Durels, SL Green's director of leasing and real property, emphasized that the renovation work has successfully positioned the building as a destination for tenants seeking "upscale amenities at a luxury location."
The tower hosts a sophisticated roster of alternative investment and financial services firms, including Blue Crest Capital Management, Willow Tree Credit Partners, Garnett Station Partners, and investment advisory firm Steadfast Financial. Additionally, Banco Bradesco maintains a significant presence in the building. The ground floor features a luxury retail component, with British sports car brand Aston Martin operating a showroom since 2023, further reinforcing the building's high-end positioning.
OceanSound was represented by Savills' John Johnson in the lease negotiation, while SL Green's leasing team—comprising CBRE's Paul Amrich, Neil King, Alex D'Amario, Matthew Dichter, and Brooke Dewing—executed the transaction on behalf of the landlord. While specific rent terms were not disclosed, asking rent in the building was $170 per square foot as of March 2026, according to Commercial Observer's prior reporting. The lease reflects sustained institutional demand for premium office space in Manhattan's core financial districts despite broader market volatility.
SL Green acquired 450 Park Avenue in April 2022 from Oxford Properties and Crown Acquisitions for $445 million. Following the acquisition, the landlord invested in capital improvements and building amenities, which have proven instrumental in attracting institutional-grade tenants. Steven Durels, SL Green's director of leasing and real property, emphasized that the renovation work has successfully positioned the building as a destination for tenants seeking "upscale amenities at a luxury location."
The tower hosts a sophisticated roster of alternative investment and financial services firms, including Blue Crest Capital Management, Willow Tree Credit Partners, Garnett Station Partners, and investment advisory firm Steadfast Financial. Additionally, Banco Bradesco maintains a significant presence in the building. The ground floor features a luxury retail component, with British sports car brand Aston Martin operating a showroom since 2023, further reinforcing the building's high-end positioning.
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