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Sue Sun assists with internal investigations of multinational companies, including potential violations of the Foreign Corrupt Practices Act (FCPA). Her experience covers all stages of complex cross-border internal investigations, including document reviews, witnesses interviews, on-site visits, phone collections, and recommendations for remedial actions.

Sue also has experience advising multinationals on issues relating to cybersecurity, cross-border data transfers, privacy compliance, and data breach incident responses.

In addition, Sue has experience in cross-border M&A transactions and general corporate matters. She drafts due diligence reports, articles of association, and other legal documents for M&A projects in the chemical and medical industries.


  • WEG acquires industrial electric motors and generators business from Regal Rexnord CorporationJones Day advised WEG S.A. in the $400 million acquisition of the industrial electric motors and generators business of Regal Rexnord Corporation.
  • Silicon Mobility sold to IntelJones Day advised Silicon Mobility SAS in the acquisition of the company by Intel Corporation.
  • J.M. Huber acquires Biolchim GroupJones Day advised J. M. Huber Corporation in the acquisition of Biolchim Group, a leading producer and distributor of specialty plant nutrition and biostimulants, from private equity firms NB Renaissance and Chequers Capital and the Biolchim Group management team.