Jonathan Kortmansky

O: (646) 586-5446
[email protected]

"Excellence is not an exception; it is a prevailing attitude."


Jonathan Kortmansky

Jonathan has 25 years of experience representing clients in high stakes litigation and trials. He regularly advises senior management regarding litigation, business and regulatory risks and strategy.

Jonathan’s clients include multi-national banks and corporations, high tech and fintech companies. He has won multiple trials involving complex financial instruments and transactions. He has obtained dismissal of securities and RICO class actions on behalf of multi-national banks, and managed global litigation teams involved in parallel disputes in multiple jurisdictions.

He regularly represents clients in criminal and regulatory proceedings commenced by the United States Department of Justice and the Securities and Exchange Commission. His practice focuses on securities, products liability, bankruptcy, and white-collar criminal defense in addition to general commercial litigation.


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On behalf of UniCredit Bank Austria AG, obtained dismissal of two securities class actions, $60 billion RICO claim, and $2 Billion of fraud based claims asserted against it in connection with the Madoff fraud.

Obtained complete defense verdict on behalf of Thompson SA in connection with claim that it failed to honor $100 million put option granted to founder of a company that developed digital video recording technology.

Obtained complete defense verdict in $40 million claim asserted by multi-national chemical corporation to rescind acquisition of medical device company.

Obtained verdict that controlling shareholder fraudulently represented value of Israel’s largest privately-held agrochemical company.

Obtained an Assurance of Discontinuance, which did not require removal of board of directors, corporate penalties or fines on behalf of 501(c)(3) entity under criminal investigation by the New York Attorney General’s Office.

Obtained settlement with Securities and Exchange Commission on behalf of corporation engaged in binary option business. The settlement allowed company to avoid a charge of fraud, pay a de minimis fine and remain eligible to list on NASDAQ.

Conducted internal investigation on behalf of corporation whose union employees were engaged in a bribery and kickback scheme with vendors, and disposing hazardous waste in potential violation of various federal, state and local regulations.

On behalf of a multi-national financial institution, uncovered details and mechanics of employees’ scheme to defraud involving $9 billion in mortgage-backed securities, assisted federal prosecutors in obtaining four guilty verdicts and recovered losses from financial institutions that benefited from the scheme.


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