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About me

Mark Worthington concentrates his practice on corporate and securities law and has experience with a wide range of corporate finance and technology licensing transactions. Mark joined Summit Law Group in 1997 and currently serves as the firm’s chief financial officer. He has been recognized in The Best Lawyers in America, as a “Super Lawyer” by Washington Law & Politics, and as one of “Seattle’s Best Lawyers” by Seattle Metropolitan Magazine.


Practice areas


  1. Mergers & Acquisitions: 20%
    21 years
  2. Securities Offerings: 20%
    21 years
  3. Corporate & Incorporation: 20%
    21 years
  4. Venture Capital: 20%
    21 years
  5. Other: 20%
  6. More 

Attorney endorsements

4 total 

Are you an attorney? Endorse this lawyer

  • John H. Chun

    I endorse this lawyer.


    John Chun Litigation Attorney
    Relationship: Co-worker

  • Trenton Cordell Dykes

    Mark is a pleasure to work opposite. He possesses strong technical skills and business savvy.


    Trenton Dykes Venture Capital Attorney
    Relationship: Opposing Counsel on matter

Contact info

Summit Law Group

315 Fifth Avenue South Suite 1000
Seattle, WA, 98104


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Super LawyerSuper Lawyers2014
Best Lawyers in AmericaBest Lawyers in America2013
Super LawyerSuper Lawyers2013
Super LawyerSuper Lawyers2012
Best Lawyers in AmericaBest Lawyers in America2012
Super LawyerN/A2011
Best Lawyers in AmericaBest Lawyers in America2011
Super LawyerN/A2010
Best Lawyers in AmericaBest Lawyers in America2010
Best Lawyers in AmericaBest Lawyers in America2009
AV Peer Review RatingMartindale-Hubbell2009
Super LawyerN/A2009
Best Lawyers in AmericaBest Lawyers in America2008
Super LawyerSuper Lawyers2008
Avvo Top Venture Capital LawyerWashington CEO Magazine2008
Avvo Top Securities Offerings LawyerWashington CEO Magazine2008
Best Lawyers in AmericaN/A2007
Super LawyerN/A2007
Seattle’s Best LawyersN/A2007
Super LawyerN/A2006
Super LawyerN/A2005
Super LawyerN/A2004
Super LawyerN/A2003
Super LawyerN/A2002
Work experience
TitleCompany nameDuration
AttorneyDavis Wright Tremaine LLP1995 - 1997
Law ClerkU.S. Court of Appeals for the Fourth Circuit1994 - 1995
Law ClerkU.S. District Court, Western District of North Carolina1993 - 1994
Association namePosition nameDuration
University of Washington World SeriesDirector2014 - Present
TiE SeattleCharter Member2012 - Present
Washington State Association of CASA/GAL ProgramsDirector2011 - 2013
Washington State Bar AssociationN/AN/A
MIT Enterprise Forum of the NorthwestN/AN/A
School nameMajorDegreeGraduated
University of California, Hastings College of the LawLaw, Cum LaudeJD - Juris Doctor1993
Stanford UniversityAmerican Studies, with HonorsBA - Bachelor of Arts1988
Speaking engagements
Conference nameTitleDate
New Venture Capital FinancingSecurities Issues2002