Last week, Barbara Corcoran, a veteran “Shark Tank” investor aged 76, revealed she was listing her cherished penthouse in New York City for $12 million — and almost right away, a buyer stepped forward.

The most recent Olshan Luxury Market Report indicates that Corcoran’s duplex penthouse located at 1158 Fifth Avenue attracted multiple bids and was sold for more than the asking price within just 24 hours of hitting the market. The finalized sale price and the buyer’s identity remain undisclosed but will be revealed once the transaction is completed.

The property was one of 36 contracts signed last week in Manhattan with a value of $4 million or more, per the Olshan report.

Corcoran shared on Instagram, “Real estate often tugs at your emotions, but I never imagined parting with this stunning sky-high retreat.” She added, “I hope the lucky individual who acquires it will treasure it as much as I have!”

The 4,600-square-foot, 11-room co-op has four bedrooms, four full baths, and two half baths. Monthly maintenance fees are $11,693.32. Corcoran listed the property with The Corcoran Group, the real estate firm she founded in 1973 and sold in 2001 for $66 million.

Corcoran first spotted the penthouse in 1992, when she was delivering letters for a messenger service as a side hustle. She was impressed by the apartment’s terrace with views of Central Park, and asked the home’s then-owner to call if they ever thought about selling the unit.

More than two decades went by without a phone call. Finally, in 2015, the owner was ready to sell. Corcoran bought the property for $10 million and spent an additional $2 million in renovations, designing the home exactly as she imagined it. She added a library with a fireplace, a full kitchen next to the terrace, and a butler’s pantry.

Corcoran is moving out of the duplex penthouse and into a single-story one to save her and her husband, Bill Higgins, 80, the trip up and down the stairs. The duo has already found a single-story apartment in the same Carnegie Hill neighborhood.

Corcoran previously disclosed that she makes $300,000 as a “Shark Tank” investor, but usually invests over $1 million per year in startups that come on the show. She also stated that she makes $4.5 million annually from her stocks, bonds, and other investments.

Corcoran has been on “Shark Tank” for 16 years and has closed 650 deals on the show.