Mark O'Halloran has an impressive resume for successfully litigating challenging injury cases, and he has earned a reputation as one of Washington's top personal injury attorneys. He is repeatedly selected as a Super Lawyer and was a Top 40 Under 40 selection for enforcing the rights of injured persons and challenging Big Insurance. Outside of his practice, Mark is committed to protecting the community, educating the public, and enforcing the rule of law. He was an officer on an Executive Committee of the American Bar Association Judicial Division, served as Chair of the Judicial Outreach Network for several years, and was Chair of the Lawyers Conference of the Judicial Division. He is formerly a board member for the Seattle University Law Alumni Board and served on its Executive Committee and as Chair of its Development Committee. He currently serves the Washington State Association for Justice on the Judicial Relations Committee. He has held numerous past leadership positions with the American Bar Association and Washington State Bar Association and implemented multiple public service projects for low income persons, senior citizens, and veterans. Mark received his degrees from the University of Washington and Seattle University School fo Law. He is licensed to practic in Washington State Courts, The United States District Court for the Western District of Washington, and The Supreme Court of the United States. He resides in Seattle with his wife and daughter.
30%-33%
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Chat withState: Washington
Acquired: 2002
No misconduct found
7900 SE 28th Street, Fifth Floor, Mercer Island, WA, 98040
Not Yet Reviewed
"I've worked with Mark for four years. He represents the best of our profession in intellect, ethics, demeanor and performance. Mark is a determined and tenacious fighter for each of his clients. If I was on the opposite side of a case from Mark, the thing that would worry me the most is that a judge and jury is going to like and respect him as much as everyone else. You can just tell he's on the right side, wearing the white hat."
Personal injury lawyer
Personal injury lawyer
Personal injury lawyer
Personal injury lawyer
Personal injury lawyer
2026
Super Lawyer, Super Lawyers
2025
Super Lawyer, Super Lawyers
2024
Super Lawyer, Super Lawyers
2024
Super Lawyer, Super Lawyers
2023
Super Lawyer, Super Lawyers
2023
Super Lawyer, Super Lawyers
2022
Super Lawyer, Super Lawyers
2022
Super Lawyer, Super Lawyers
2021
Super Lawyer, Super Lawyers
2021
Super Lawyer, Super Lawyers
2015
Super Lawyer Rising Star, Seattle Metropolitan Magazine
2015
Super Lawyer, Super Lawyers
2014
Super Lawyer Rising Star, Seattle Metropolitan Magazine
2014
Super Lawyer, Super Lawyers
2013
Super Lawyer, Super Lawyers
2013
Super Lawyer Rising Star, Washington Law & Politics Magazine
2012
Super Lawyer, Super Lawyers
2012
Top 40 under 40, The National Trial Lawyers
2012
Super Lawyer Rising Star, Washington Law & Politics Magazine
2011
Super Lawyer Rising Star, Washington Law & Politics Magazine
2011
Super Lawyer, Super Lawyers
2011
Star of the Year, American Bar Association YLD
2010
Star of the Quarter, American Bar Association YLD
2009
Certificate of Appreciation Bridging the Gap Conference, Washington State Bar Association YLD
2009
Super Lawyer, Super Lawyers
2009
Super Lawyer Rising Star, Washington Law & Politics Magazine
2008
Super Lawyer, Super Lawyers
2008
Super Lawyer Rising Star, Washington Law & Politics Magazine
2008
Plaque of Appreciation - Coach 2006-2008, Mercer Island High School Mock Trial Team
2008
Certificate of Appreciation WYLD President, Washington State Bar Association YLD
2008
Certificate of Appreciation, YMCA Youth and Government Mock Trial Volunteer
2007
Pro Bono Publico Service Commendation, Washington State Bar Association
2005
Super Lawyer, Super Lawyers
2005
Super Lawyer Rising Star, Washington Law & Politics Magazine
2004
Certificate of Appreciation - Outstanding Pro Bono Service, Washington State Bar Association
2003
Cerificate of Appreciation - Outstanding Volunteer Services, Washington State Bar Association
2014 - Present
Attorney - Partner, Gosanko, O'Halloran, & Lepore, PLLC
2004 - 2013
Attorney, The Gosanko Law Firm
2003 - 2004
Attorney, Bishop Law Offices
2001 - 2003
Attorney, RealNetworks
2012 - Present
ABA Judicial Division, Lawyers ConferenceExecutive Committee Member
2003 - Present
Washington State Association for JusticeEagle Member
2016 - 2017
American Bar AssociationJudicial Division Lawyers Conference Chair
2016 - 2020
American Bar AssociationJudicial Outreach Chair
2015 - 2016
ABA Judicial Division, Lawyers ConferenceVice Chair
2015 - 2016
American Bar Association, Judicial DivisionPublic Education Pillar Vice Chair
2014 - 2015
ABA Judicial Division, Lawyers ConferenceSecretary
2012 - 2013
Seattle University Law Alumni BoardDevelopment Committee Chair
2012 - 2013
ABA Judicial Division, Lawyers ConferenceProgram Committee Chair
2011 - 2012
ABA Judicial Division, Lawyers ConferenceNominating Committee
2010 - 2011
American Bar Asociation YLDPublic Service Director
2009 - 2014
Seattle University Law Alumni BoardExecutive Committee Member
2009 - 2012
American Bar Association YLDLeadership Advisory Board
2009 - 2010
American Bar Association YLDNational Conferences Team Director
2008 - 2012
ABA Lawyers Conference of the Judicial DivisionLiaison to YLD
2008 - 2009
American Bar Association YLDNational Conferences Team Member
2008 - 2009
Washington State Bar Association YLDChair - Bridging the Gap Conference
2008 - 2010
Washington State Bar AssociationProgram Review Committee
2007 - 2008
American Bar Association YLDMembership Board
2007 - 2008
Washington State Bar Association YLDPresident
2006 - 2010
Initiative for Diversity Governing CouncilChair and Member
2006 - 2007
Washington State Bar Association YLDPresident-Elect
2006 - 2007
Washington State Bar AssociationLong Range Planning Committee
2006 - 2007
Washington State Bar AssociationAwards Committee
2005 - 2007
American Bar Association YLDMember Service Team
2003 - 2006
Washington State Bar Association YLDEditorial Advisory Board - De Novo
2003 - 2009
Washington State Bar Association YLDBoard of Trustees
2002 - 2003
Washington State Bar Association YLDPublic Service Committee Chair
Settlement $1,125,000.00
Judgment entered on verdict for $471,885.43
2002
Juris Doctor
1998
Bachelor of Arts
2013
Cloudy with a Chance of Apps: Mobile Applications, Social Media, and Cloud Computing for Judges and Attorneys and the Ethical Implications of Judging and Practicing in the Cloud.
2011
2011
2011
Fellows Debate
2010
The Dollars and Sense of Diversity
2009
Ethical Responsibilities Between Judges and Lawyers in Litigation
2006
Conquering Ethical Dilemmas
2012
2011
English