Karl A. Weiss
Awarded Practice Areas
Biography
With over 20 years of experience and 250+ merger/acquisition transactions (ranging up to $120M), Karl provides comprehensive legal and tax counsel, personalized to all types of closely held and family businesses throughout the Pacific Northwest. Drawing upon a significant federal and state tax background, he enjoys assisting clients with choice of entity and formation, governance and operating agreements, employment and compensation plans, service agreements, as well as business dissolutions, succession planning, mergers/acquisitions, and advanced estate/tax planning. Utilizing a team approach, he works closely with the clients’ other professional advisors.
Prior to joining Lasher Holzapfel Sperry and Ebberson, Karl was a Manager with a big-four accounting firm in its state and local tax consulting practice, where he assisted Fortune 500 clients, middle market businesses, and emerging growth companies in tax and strategic planning.
During law school, Karl served on the Willamette Law Review, was a member of Inns of Court (mentored by Oregon Supreme Court Chief Justice Wallace P. Carson), and clerked for the five Magistrates of the Oregon Tax Court.
Overview
- Willamette University, J.D., graduated 1998
- New York University, LL.M., Taxation, graduated 1999
- University of Wisconsin–Madison, B.A.
- Willamette University, J.D., graduated 1998
- New York University, LL.M., Taxation, graduated 1999
- University of Wisconsin–Madison, B.A.
Client Testimonials
Awards & Focus

- Closely Held Companies and Family Businesses Law, Seattle (2026)
- Closely Held Companies and Family Businesses Law
- Tax Law
- Business Organizations (including LLCs and Partnerships)
- Mergers and Acquisitions Law
- Named to “Best Lawyers” 2021 Edition of The Best Lawyers in America in Closely Held Companies and Family Businesses Law
- Super Lawyers magazine Washington (business/corporate law) – 2010-2022
- Seattle Met magazine Top Lawyer (business/corporate law) – 2011-2020
- Washington Law & Politics magazine, Rising Star, 2008 and 2009
- Seattle Business Monthly magazine (tax law) 2007
- Seattle magazine, Top Lawyer (tax law) 2007
News & Media
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