Gene Schleppenbach

Derek Adams is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar and Qui Tam Law. Derek, who practices law in Washington, District of Columbia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Derek is held by other top lawyers in the same geographic and legal practice area.

Alan S. Mark is a member of the firm’s Commercial Transactions , Financial Services , Real Estate , and Science & Technology Practice Groups. For the past 35 years, Mr. Mark has concentrated on corporate, commercial and real estate finance matters. He has served as outside counsel to numerous local, regional and national financial institutions, publicly traded biotechnology companies and hotel owners and operators. He has also served as outside counsel to information and telecommuni...

Todd Steinberg focuses his practice on helping high net worth individuals and families navigate complex and sophisticated estate and income tax planning matters. He assists clients with multi-generational wealth preservation and accumulation, as well as probate and trust administration, and charitable planned giving. Todd has substantial experience in complex, post-death estate and trust administration, as well as fiduciary litigation matters. He has represented clients in IRS estate and gift...

Jeffrey Davidson is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law. Jeffrey, who practices law in Washington, District of Columbia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jeffrey is held by other top lawyers in the same geographic and legal practice area.

Stephen Weissman is a top attorney recognized by Best Lawyers in the practice area(s) of Antitrust Law and Litigation - Antitrust. Stephen, who practices law in Washington, District of Columbia, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Stephen is held by other top lawyers in the same geographic and legal practice area.

Dan Gerkin is a partner in the National Security Practice Group. He advises on issues involving the transnational flow of goods, software, technology and services, as well as in connection with investments in the United States and abroad. Dan has advised on matters involving U.S. export controls, economic embargoes and sanctions, investment security reviews, supply chain security, customs and trade remedies and other trade-related investigations, often in connection with mergers and acquisiti...

James N. Mastracchio is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. James N., who practices law in Washington, District of Columbia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which James N. is held by other top lawyers in the same geographic and legal practice area.

Jonathan J. Straw is an attorney with Kraftson Caudle in McLean, Virginia, where he focuses his practice on construction law and government contracts. His work involves claims, litigation, arbitration, mediation, and negotiation arising from change orders, schedule delays, and payment disputes. Jon represents prime contractors, subcontractors, and project owners on public and private construction projects in state and federal forums across the United States. His construction law experience in...

Elizabeth Thomas Dold’s practice focuses on the Internal Revenue Code and related compensation matters, including employment taxes and other reporting and withholding requirements. She covers all types of employee benefits, including qualified plans, IRAs, governmental plans, nonqualified deferred compensation plans, and health and welfare plans. She assists clients in all tax-related aspects of employee benefits including Internal Revenue Service (IRS) filings, compliance audits, desig...

Adrian L. Bastianelli, III is Of Counsel at Peckar & Abramson PC , based in Washington, District of Columbia. Following a lengthy career representing participants across the construction industry in claims and litigation, while also serving as an ADR neutral, he has transitioned his practice to focus exclusively on neutral services. His work includes serving as an arbitrator, mediator, dispute review board (DRB) member, and in other roles involving arbitration and mediation. Adrian previo...