Thomas J. "Tom" Knox

David is the managing partner of the Washington, D.C. office, as well as the co-leader of the Investment Management Group. Prior to joining Sullivan & Worcester, David was Special Counsel in the Washington, D.C. office of Gibson, Dunn & Crutcher. He previously served as Assistant General Counsel for Legislation and Investment Company and Adviser Regulation at the Securities and Exchange Commission and as Counsel to SEC Commissioner Aulana Peters.

After 30 years as a partner with highly regarded Yablonski, Both & Edelman, Daniel B. Edelman joined Katz, Marshall & Banks, LLP as Of Counsel, specializing in employment discrimination, whistleblower, civil rights/civil liberties and contractual matters. A graduate of Harvard University, Mr. Edelman received his law degree from Harvard Law School. He served as law clerk to U.S. Supreme Court Justice Harry A. Blackmun, and is widely considered to be a preeminent appellate advocate. He...

As a Washington DC personal injury attorney, Patrick M. Regan focuses on handling some of the most complex personal injury cases, such as those involving catastrophic injuries, product liability, and medical malpractice. Called a “personal injury lawyer who could be a poster boy for legal ethics and integrity” by Washingtonian Magazine, he is board certified in Civil Trial Advocacy by the National Board of Trial Advocacy. Throughout his extensive legal career, he has recovered ver...

Jonathan P. Trotta is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law. Jonathan P., who practices law in Washington, District of Columbia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jonathan P. is held by other top lawyers in the same geographic and legal practice area.

Patrick L. O'Neil is a top attorney recognized by Best Lawyers in the practice area(s) of Eminent Domain and Condemnation Law and Land Use and Zoning Law. Patrick L., who practices law in Bethesda, Maryland, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Patrick L. is held by other top lawyers in the same geographic and legal practice area.

Through his actions and collective experience, Haydn Richards has demonstrated that he is one of the foremost leaders in state financial services law and financial services licensing matters. Haydn is a nationally recognized leader on mortgage and financial services licensing matters, including counseling clients relating to the formation of financial services companies and strategic acquisitions. He regularly interacts on behalf of financial services companies with federal and state regulato...

Gary B. Mims has practiced law since 1980. He was a defense litigator for 20 years, defending a heavy schedule of trials involving automobile, trucking, train and other transportation accidents and a wide variety of personal injury cases. He developed a special interest and significant experience in medical malpractice, first from the defense side, and since 1999, as a plaintiff's attorney. He has successfully represented clients in complicated medical cases involving, among other things, fai...

Christopher T. Nace is the Managing Member of Nace Law Group Accident & Injury Lawyers (previously Paulson & Nace, PLLC). Mr. Nace works in all practice areas of the firm, including medical malpractice, legal malpractice, drug and product liability, motor vehicle accidents, wrongful death, and other negligence and personal injury matters. Chris was born in Washington, D.C. He graduated from Georgetown University with a degree in Government in 1998. In 2003 Chris graduated from Emory U...

Virginia C. Haizlip is a top attorney recognized by Best Lawyers in the practice area(s) of Collaborative Law: Family Law, Elder Law, Family Law, Family Law Mediation, Litigation - Trusts and Estates and Trusts and Estates. Virginia C., who practices law in Fairfax, Virginia, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Virginia C. is held by other top lawyers in the same geographic and legal practice area.

Mark J. Wishner has more than 30 years of securities and corporate transactional experience. Mark's practice encompasses public and private securities offerings, domestic and cross-border mergers and acquisitions, SPACs, leveraged buyouts, private investor representations, corporate governance, restructurings and SEC reporting and compliance matters. Since 2004, Mark has led transaction teams in transactions having a value in excess of $3 billion. Mark has wide-ranging industry experience in ...