Thomson Reuters names eight Keystone Law partners in its Stand-out Lawyers Guide 2026
Andrea James, Andrew Darwin & Anna McKibbin
Isaac is a banking and finance lawyer who specialises in syndicated loans and various types of secured and unsecured transactions. His lending experience includes bilateral and syndicated lending with sovereigns (including Kenya, the Turkish Republic, Senegal, Togo and Ghana) and international organisations (including Black Sea Trade and Development Bank, Asian Development Bank, European Investment Bank, Trade Development Bank and African Export-Import Bank).
Isaac’s clients also include financial institutions and corporate borrowers.
Isaac advises on complex cross-border syndicated lending, sustainable financing, refinancings, bilateral facilities, loan participation sales and major emerging-market bank transactions for leading global lenders and financial institutions.
Experience
Isaac advises on syndicated loans and secured and unsecured transactions, acting for leading financial institutions and borrowers on high-value, cross-border facilities across Europe, Asia, the Middle East, and Africa.
Experience
Isaac advises on African financing matters, including additional funding for industrial projects, restructuring shareholder loans, and negotiating facility agreements for major Nigerian banks and their international financiers.
Experience
Please note: The experience list above may include examples of work completed prior to joining Keystone Law.
Recognised by Chambers Global for Corporate Finance: Mid-Market 2026
Recognised by Chambers UK for Corporate Finance: Mid-Market 2026
Recognised by The Legal 500 Hall of Fame for Bank Lending: Investment Grade Debt and Syndicated Loans 2024–2026
Recognised by The Legal 500 for Bank Lending: Investment Grade Debt and Syndicated Loans 2022–2023
Recognised by The Legal 500 for Emerging Markets 2022
Recognised by IFLR 1000 as a “Highly Regarded” lawyer for Financial and Corporate 2023
“Isaac Felberbaum – simply amazing, always available, unflappable and a fount of expert experienced legal advice. ”
The Legal 500 2026
“Isaac Felberbaum has vast knowledge in the syndicated loan space and knows all aspects of the process as well as understand both, the borrower’s needs and the lenders’ requirements to find a consent.”
The Legal 500 2026
“Isaac Felberbaum [brings] a wealth of expertise to the transaction. Operating in an Emerging Market Environment, we face macro challenges as well as credit risks that the lenders would require to be reflected on the contracts.”
The Legal 500 2026
“The excellent Isaac Felberbaum is responsive and provides sage advice.”
The Legal 500 2025
“Isaac Felberbaum is calm, resourceful, with ‘presence’ and, more importantly, will do everything to make a deal happen even on complex financings involving difficult counterparties!”
The Legal 500 2024
“Isaac Felberbaum is my first port of call for English law syndicated loans.”
The Legal 500 2024
“Commercial and enthusiastic.”
The Legal 500 2022
Isaac qualified as a solicitor in 1988. Prior to joining Keystone Law in 2022, he worked at the following firms: