Global law firm Rimon PC adds new corporate attorney in Warsaw

News Global law firm Rimon PC adds new corporate attorney in Warsaw Piotr Siemion · July 21, 2021

Warsaw – Rimon is pleased to welcome corporate attorney Piotr Siemion, as Senior Counsel in the firm’s Warsaw office.

Mr. Siemion joins Rimon from energy company, PKN ORLEN S.A., where he was Director.

Mr. Siemion has over two decades of transactional experience, specifically in the areas of corporate law, corporate governance, regulatory and compliance, industrial restructuring, mergers & acquisitions, capital markets, and private equity.  Mr. Siemion is a U.S. attorney, admitted to the New York bar, and has managed legal projects in the United States, Poland, Central Europe, Canada, and Israel.  As Director at PKN ORLEN S.A., he led joint ventures in the renewable energy sector.  Mr. Siemion has significant experience leading projects for large companies involving complex international joint ventures, upstream acquisitions, and capital group optimizations in the energy, finance, and telecommunications industries.  He also has prior experience as a corporate attorney for Weil, Gotshal & Manges, specializing in mergers and acquisitions, capital markets and private equity.

“To me, Rimon represents a fusion I’ve always believed in – it is that rare place where an amazing business agility bonds with true legal excellence,” said Mr. Siemion on joining Rimon. “I feel honored to join the team and to help expand the firm’s footprint working from Warsaw, one of the fastest-growing business hubs in Europe.”

“We are pleased to have Piotr join us in Warsaw, as we continue to build our presence in Europe,” said CEO and Founding Partner, Michael Moradzadeh. “Piotr, along with Warsaw Partner, Federico Salinas, advise companies who are looking to start or expand business operations in Europe.  Europe is a priority area for our firm. We now have offices in London, Paris, Berlin, Warsaw and Moscow.”

Mr. Siemion received his J.D. from Columbia Law School (Harlan Fiske Stone Scholar). He also received a Ph.D from Columbia University in the Humanities, where he was Fulbright Scholar and a Marjorie Nicholson Fellow, He received his M.A. from the University of Wroclaw, Poland.


Rimon has 42 offices in 13 countries. The firm is widely known as being at the vanguard of legal innovation. The firm has been repeatedly recognized by the Financial Times as one of North America’s most innovative law firms. The firm’s Managing Partners were both named ‘Legal Rebels’ by the American Bar Association’s ABA Journal and have spoken on innovations in the practice of law at Harvard and Stanford Law Schools. Rimon and its lawyers have also received numerous awards for excellence, including from Best Lawyers and Chambers.