Jack is a trial lawyer who has won some of the largest jury verdicts for whistelblowers in Washington State.  See .  Jack received his J.D. from Vermont Law School in 1984, where he was a member of the National Moot Court team. After graduation, Jack joined the Navy as a lieutenant in the JAG Corps. There he obtained extensive trial experience as a criminal defense lawyer and ultimately headed a trial team in one of the Navy’s largest Navy Legal Services offices. After a stint in Japan as an attorney at a Japanese law firm, in 1992, Jack opened his Seattle law firm, which became known as Sheridan & Associates, P.S. In the late 1990s, Jack briefly left private practice to work as the Seattle Litigation Director of the Government Accountability Project, representing whistleblowers. In 2002, he reopened his firm with Randy Baker as Sheridan & Baker, P.S. Randy left the team and moved on to found his own practice in 2005.

  Since then, Jack and his staff have operated as the Sheridan Law Firm, P.S.

Jack is a member of the Washington State Bar Association, the American Bar Association, The National Employment Lawyer’s Association, the Washington Employment Lawyers Association, and the Washington State Trial Lawyer’s Association. He is admitted to practice in all courts in Washington State, the United States Supreme Court, the U.S. Ninth Circuit Court of Appeals, and U.S. Federal District Courts in Seattle and Spokane.

In 2002, Jack and is wife, Angela, ran their first and second marathons in Portland and Seattle. In 2003, Jack ran the Victoria Half Marathon and broke the four-hour mark running the Vermont City Marathon, and again in 2005 running the San Diego Rock’n Roll Marathon. In November 2005, Jack and more than 36,000 other runners, finished the New York City Marathon. In September 2006, Jack and his family ran (or walked) the Inaugural Disney Half Marathon in Anaheim, CA.  In July 2007, Angela pulled Jack through the Ride Around Mount Rainier In One Day (RAMROD), which is a one-day bicycle ride that includes 10,000 feet of climbing over a course covering more than 140 miles.  In October, Jack ran the Portland Marathon.  In January 2008, Jack ran the Orlando Disney Marathon and Angela ran the half.  In October 2008, Jack ran the Portland Marathon again, and from 2009 to the present, Jack and Angela have been running the Disney Half in Orlando each January. Angela is now on a bicycle racing team and Jack is training for the NYC Marathon in November 2010.  Jack and his family continue to love outdoor adventures and travel.