The office building at 777 West Putnam Ave. is fully leased for the first time under its current ownership, after four financial firms signed or expanded leases totaling 23,248 square feet.

Knighthead Funding, already headquartered in the building, drove most of the activity with a 13,759-square-foot renewal and expansion on the third floor. Its affiliate, Knighthead Life Insurance, added a separate 3,718-square-foot lease on the same floor. Wexford Capital renewed 3,590 square feet on the first floor, and Deccan Capital, a hedge fund managing about $1.1 billion, signed a new 2,181-square-foot lease and relocated into the building.

Newmark's Benjamin Goldstein, who represented owner Shelbourne in all four deals, credited recent capital improvements — a lobby renovation, new café and outdoor patio, upgraded security, and refreshed common areas — for pulling tenants in.

Shelbourne Global Solutions bought the 134,000-square-foot property for $48.5 million in 2022. Built in 1976, it served as Nestlé Waters North America's headquarters until Nestlé moved to Stamford in 2009. Current tenants include Marc Fisher Footwear, The Richman Group, and Stark Office Suites, with easy access to I-95 and Metro-North.

Class A rents in Greenwich's central business district rose 6.8% year-over-year to $114.47 per square foot in early 2026 — the strongest growth in Fairfield County. Countywide leasing activity jumped 32% year-over-year to about 780,000 square feet, the first time since 2022 that first-quarter volume beat the 10-year average. Office vacancy across Fairfield County also fell from 24.2% to 21.8% in the same period.