Sylvia G. Costelloe*

Associate
Sylvia's practice spans several areas of international trade and arbitration matters.
Sylvia Costelloe, Associate at Arent Fox

Sylvia regularly advises clients with respect to the Export Administration Regulations (EAR), International Traffic in Arms Regulations (ITAR), and Office of Foreign Assets Control (OFAC) sanctions and embargoes. She helps large and small US and non-US companies understand and comply with the complicated US laws and regulations governing exports and re-exports of goods, software, services, and technology. Sylvia advises clients on international regulatory issues, including civilian and military export controls, economic sanctions, and antiboycott regulations. She frequently assists clients with license applications, commodity classifications, compliance program design and implementation, audits, and voluntary disclosures to various government agencies, including the Directorate of Defense Trade Control (DDTC), the Bureau of Industry and Security (BIS), and OFAC.  

Sylvia has also counseled clients on Foreign Corrupt Practices Act (FCPA) and business ethics-related compliance policies and procedures. She has experience in various industries, including telecommunications, electronics, information technology, chemicals, and industrial manufacturing.

*Not admitted in California. Admitted in Maryland and the District of Columbia. Practicing under the supervision of firm principals.

Previous Work

Prior to joining Arent Fox, Sylvia served in a clerkship with Judge Kim R. Gibson (Western District of Pennsylvania).

Publications, Presentations & Recognitions

Sylvia’s article co-written with her colleague, Nancy Noonan, “Washington Lawyers’ Committee’s Cases and Other Initiatives Involving Immigration and Refugee Law” was published in the Fall 2018 edition of the Howard Law Journal.

Life Beyond the Law

Sylvia grew up in Europe and Asia, and is fluent in German and French. She enjoys hiking, skiing, rock climbing, reading, and traveling to Europe.