He regularly advises financial institutions and other clients on structuring, enforcement, and regulatory compliance issues in connection with derivatives, lending transactions, participations, securitizations, and CLOs; on the insolvencies of banks, broker-dealers, and central counterparties; on derivatives clearing organization, central securities depository, payment system, and other U.S. market infrastructure matters; on custodial and secured lending issues in relation to digital assets and securities; and on matters under Articles 8, 9, and 12 of the Uniform Commercial Code.
 
Jonathan is an expert on true sale issues and has substantial experience regarding counterparty rights under a variety of different U.S. insolvency regimes, including in relation to the enforceability of closeout, netting, and collateral enforcement rights in relation to qualified financial contracts under applicable safe harbors of the Bankruptcy Code, the Federal Deposit Insurance Act, the Securities Investor Protection Act, the New York Banking Law, and the Orderly Liquidation Authority. He is the author of the industry netting opinion on the Global Master Repurchase Agreement and the Global Master Securities Lending Agreement for the International Capital Market Association and the International Securities Lending Association, as well as a number of private opinions on the ISDA, GMRA, GMSLA, MRA, MSLA. MSFTA, and EMA.