Sergey Rybak
Principal
Rybak Development
Developer, Owner
227 Sea Breeze Avenue, Suite C-403. Brooklyn, NY 11224
1817 Emmons Avenue, 2nd Floor Brooklyn, NY 11235
Rybak Development NYC portfolio
$448.3 million -development 26%, condo 23%, retail 16%; Manhattan 42%, Brooklyn 36%, Queens 21%*
568th largest portfolio by dollar value
308,544 sqft – condo 61%, elevator 12%, development 11%; Brooklyn 63%, Manhattan 25%, Queens 11%
1237th largest by SF
14 properties – Manhattan 47%, Brooklyn 47%, Queens 5%
811th largest
366 residential units – Brooklyn 49%, Queens 26%, Manhattan 24%
816th largest by residential units
0 foreclosures, 0 bankruptcies, 175 other court cases.
Person Activity past 24 months:
Buyer signatory: 2 for $13.7 million
Borrower signatory: 5 for $160.6 million
Developer (new building or major alteration): 25 for 945,920 square feet
Top Ten Associated Companies:
Valley National Bank (8), Maxim Capital Group (3), JPMorgan Chase (1), Townhouse Management Company (1), Derby Copeland Capital (1), Catholic Near East Welfare Association (1), Bank Hapoalim (1), Emerald Creek Capital (1), BK Developers (1), Semyon Vays (1)
Top Ten Associated People:
Declan P. Meagher (2), Christopher McKenna (1), Mitchel Maidman (1), Steve Spanolios (1), Eric Sadkin (1), Peter I. Vaccari (1), Mark Penna (1), Mark Zeldin (1), Sharon Raz (1), Victor Brown Jr. (1)
Recent activity as signatory:
• Sergey Rybak filed plans for new building for 856,969 sqft in Coney Island, Brooklyn, on July 21, 2026.
• Rybak Development borrowed $48.1 million from Derby Copeland Capital for 133 East 55 Street on May 22, 2026.
• BK Developers and Semyon Vays sold None for $4 million to Rybak Development on March 13, 2026.
• Sergey Rybak filed plans for new building for 44,410 sqft in Lenox Hill, Manhattan, on September 26, 2025.
• Rybak Development borrowed $28.1 million from Valley National Bank for 722 59th Street, Sunset Park, Brooklyn on September 04, 2025.
• Catholic Near East Welfare Association sold 250 East 62 Street for $9.7 million to Rybak Development on September 03, 2025.
• Rybak Development borrowed $5.8 million from Bank Hapoalim for 250 East 62 Street on September 03, 2025.
• Rybak Development borrowed $26.5 million from Maxim Capital Group for 500 East 81 Street on May 22, 2025.
• Rybak Development borrowed $52 million from Emerald Creek Capital for 133 East 55 Street on August 07, 2024.
• Sergey Rybak filed plans for new building for 41,142 sqft in Grand Central, Manhattan, on June 14, 2024.
Latest Stories:
• Rybak Development pays $4M for dev site in Boerum Hill (March 20, 2026)
• Rybak Development pays $9.7M to Catholic nonprofit for dev site in Lenox Hill (September 12, 2025)
• Rybak signs $26.5M construction loan with Maxim for 9-unit project in Yorkville (June 10, 2025)
• Rybak Dev in contract to pay $9.7M for nearly 41K sf Lenox Hill dev site (March 19, 2025)
• Rybak Development files DOB plans for 26-unit building in Grand Central (June 21, 2024)
• Namdar, Klosed, partners, sign $147.1M refi for 20 properties in NYC (June 06, 2024)
• Rybak Development plans 9-unit building in Yorkville (February 11, 2024)