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Carmel Partners’ Ron Zeff with 808 Columbus Avenue and 801 Amsterdam Avenue
New York
Jan 26, 2026

Carmel Partners buys piece of $500M UWS apartment portfolio

Ron Zeff’s company taking MetLife’s stake in five Columbus Circle buildings
(front) Michael Chetrit of the Chetrit Organization, Stellar Management’s Matthew Lembo; (back) Columbus Square shopping center on Upper West Side
New York
Jan 14, 2026

Chetrit, Stellar stare down foreclosure on Upper West Side

Mortgage shareholders sue ownership at Columbus Square
Stellar Management co-CEOs Matthew Lembo and Ryan Jackson
New York
Mar 19, 2026

Stellar Management elevates Matthew Lembo, Ryan Jackson to top jobs

Owner Larry Gluck died two years ago after ALS fight

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