“We are delighted to welcome Speyside Equity to 145 East 57th Street,” said Mr. Brod.“They are the ideal tenant for both the penthouse and the building and are representative of the type of firm interested in this ‘transformed’ product.”

The 12-story, 64,000 s/f “curated” office property is located along Billionaires’ Row. The penthouse is a newly constructed “glass box” addition to the building and features 14-foot ceilings and a private terrace with river to river views.

Speyside Equity has inked a five-year deal for the 2,650-square-foot suite on the top floor of the 12-story, 64,000-square-foot office building between Third and Lexington Avenues, according to information from the landlord. Asking rent for the in Midtown East space was $80 a square foot.

Owners of Midtown Manhattan trophy towers have ramped up the concessions they make to tenants to build out office space, often taking on the construction work themselves and incorporating high-end touches in hopes of speeding up leasing and keeping rents up, according to market reports and real-estate executives.