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Partner Promotions Announced at Bilzin Sumberg

Press Release
December 28, 2020

Miami, FL –Bilzin Sumberg is pleased to announce that two attorneys have been elected to the firm's partnership. Effective January 1, 2021, attorneys Karyl Argamasilla and Timothy P. DeKeyser will become the firm's newest partners, with practices focused on all aspects of real estate transactions, CMBS, and finance.

Karyl Argamasilla 

Karyl Argamasilla focuses her practice on structuring and executing large commercial real estate transactions. Karyl represents some of the largest special servicers of CMBS loans in the country. As a Director in the CMBS capital markets group, she handles complex assumptions, transfers of interests, workouts, forbearances and loan modifications, among others, with extensive work in the hospitality sector. Karyl has represented national and local developers, lenders, landlords, tenants, sellers, and purchasers in engagements such as acquisition, disposition and operation of property, development and financing for all asset types, including office, retail, multi-family, hospitality, self-storage and health care facilities, as well as portfolios of real property. She has also been an active member of various community and professional organizations, including United Way of Miami-Dade's Women United Executive Committee, Commercial Real Estate Women Miami and Street Law’s Law Firm Diversity Pipeline Program. 

Timothy P. DeKeyser
Tim regularly advises clients on a full array of complex real estate matters, including acquisitions, dispositions, financings, securitizations, joint ventures, sourcing arrangements, leases, and development transactions. Tim’s breadth of knowledge and experience has made him a trusted resource for a diverse client-base on significant and high-profile transactions. Tim has experience in representing domestic and international real estate companies, funds, institutional and alternative lenders, servicers, government-sponsored entities, and other real estate investors in transactions involving a variety of real estate asset classes, ranging from hospitality to senior housing, office buildings to residential/multifamily projects, and specialized-use facilities to raw and/or partially developed land. He has also assisted clients in the formation of debt and equity real estate funds and drafts and negotiates all types of corporate formation and organizational documents. 

About Bilzin Sumberg: 
Bilzin Sumberg works with clients whose business and legal opportunities and challenges span the United States and cross borders to Europe, Latin America, Canada, the Middle East, and Asia. The firm's growth has paralleled that of its Miami home base, a region known for its rich cultural, social, and professional diversity. Bilzin Sumberg lawyers concentrate on services at the heart of both regional and international commerce, including real estate, land development and government relations, environmental, corporate law, joint ventures, domestic and international tax and estate planning, business litigation, finance, and public/private partnerships. For more information, please visit

Press Release June 24, 2021
Bilzin Sumberg is pleased to announce that Real Estate Partner Karyl Argamasilla has been elected as Vice Chair of United Way of Miami-Dade's Women United Committee. United Way of Miami-Dade's Women United Committee brings together a group of purpose-driven women, passionate about making a differenc...
Press Release January 13, 2015
Bilzin Sumberg announces it has advised on acquisitions, dispositions and development deals valued in excess of $8 billion in the last 18 months. Bilzin Sumberg remains at the forefront asMiami continues to gain momentum as an international hub for commerce and investment.
Press Release January 02, 2017
Three attorneys elected to Bilzin Sumberg's partnership. Effective January 1, 2017, Tax & Estate Planning attorney Mildred Gomez, Litigation attorney Lori Lustrin, and Real Estate attorney Phillip S. Sosnow will become the Firm's newest partners.