JJ Operating
(ISJ Management, Jemstone Group)
110 W 34th St Suite 9th Fl New York, NY 10001
112 W 34th St. #2106 New York, NY 10120
People:
JJ Operating NYC portfolio
$563.2 million -retail 69%, office 15%, mixed-use 14%; Manhattan 39%, Bronx 34%, Brooklyn 15%*
396th largest portfolio by dollar value
1,068,977 sqft – retail 36%, office 33%, mixed-use 29%; Bronx 52%, Brooklyn 34%, Manhattan 10%
461th largest by SF
24 properties – Manhattan 29%, Bronx 29%, Brooklyn 25%
412th largest
216 residential units – Manhattan 93%, Brooklyn 6%
1083th largest by residential units
1 foreclosure, 0 bankruptcies, 2 other court cases.
Notes
JJ Operating and ISJ Management have shared office locations and are both affiliated with the Jemal family.
Company Activity past 24 months:
Seller company: 2 for $9.7 million
Borrower company: 3 for $212.7 million
Top Ten Associated Companies:
Signature Bank (6), Capital One (3), Apple Bank for Savings (1), Yitzchok Katz (1), Apollo Global Management (1), Extell Development (1), Feil Organization (1), Starwood Mortgage Capital (1), TriState Capital Bank (1), Uzi Shvut (1)
Top Ten Associated People:
Kenneth A. Stagnari (5), Paul Verdi (2), Cynthia Wang (1), Yitzchok Katz (1), Jeffrey Horowitz (1), Jeffrey Feil (1), Grace Chiang (1), Uzi Shvut (1), Haley Holmberg (1), Gordon Reid (1)
Recent activity as company:
• Jemstone Group sold 2946 3 Avenue for $2 million to Uzi Shvut on December 09, 2025.
• JJ Operating borrowed $19.8 million from TriState Capital Bank for 555 Bergen Avenue on September 30, 2025.
• JJ Operating sold 382 Fulton Street for $7.7 million to Extell Development and Feil Organization on July 09, 2025.
• JJ Operating borrowed $185 million from Apollo Global Management for None on April 11, 2025.
• JJ Operating borrowed $7.9 million from Tristate Capital Bank for 8 Flatbush Avenue on June 12, 2024.
• JJ Operating borrowed $39 million from Starwood Mortgage Capital for Howard building on October 13, 2023.
• Jem Realty Management and ISJ Management borrowed $18.7 million from Apple Bank for Savings for 1 East Fordham Road on October 10, 2023.
• Fortress Investment Group on August 15, 2023 bought a loan with an original principal of $42 million from Capital One, signed by Nicholas Eng, secured by Howard building, when owned by ISJ Management.
• ISJ Management borrowed $55 million from Signature Bank for 249-33 Rockaway Boulevard on December 08, 2022.
• Eduard Yakubov sold 768 East 31 Street for $1.7 million to Jemstone Group and Joseph Cohen on October 20, 2022.
Latest Stories:
• Jemal family’s JJ Operating signs $185M refi with Apollo for Chelsea (April 18, 2025)
Court Records:
Properties: