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William Thomsen Email & Phone Number

Business Valuation and Economic Damages Expert: I Provide Information that Empowers Clients to Get Better Results at Grobstein Teeple LLP
Location: Los Angeles Metropolitan Area, United States, United States 9 work roles 3 schools
1 work email found @gtllp.com 8 phones found area 310, 319, and 404 LinkedIn matched
✓ Verified Jun 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 8 phones

Work email w****@gtllp.com
Direct phone (310) ***-****
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Current company
Role
Business Valuation and Economic Damages Expert: I Provide Information that Empowers Clients to Get Better Results
Location
Los Angeles Metropolitan Area, United States, United States

Who is William Thomsen? Overview

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Quick answer

William Thomsen is listed as Business Valuation and Economic Damages Expert: I Provide Information that Empowers Clients to Get Better Results at Grobstein Teeple LLP, based in Los Angeles Metropolitan Area, United States, United States. AeroLeads shows a work email signal at gtllp.com, phone signal with area code 310, 319, 404, and a matched LinkedIn profile for William Thomsen.

William Thomsen previously worked as Director at Grobstein Teeple Llp and Consultant at Thomsen Llc. William Thomsen holds Mba, Finance from Columbia Business School.

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Email format at Grobstein Teeple LLP

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{first_initial}{last}@gtllp.com
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Profile bio

About William Thomsen

I provide business valuation and litigation services that help attorneys help their clients make informed decisions and achieve good results. I mostly work with business litigators and business owners in resolving valuation disputes in eminent domain, and also advise on valuation issues related to shareholder and contractual disputes. A successful engagement is a collaborative relationship, not a transactional one, which depends on an expert who brings the following:• Credible, well-supported valuations that stand up to third party scrutiny• Knowledge and judgment to apply the best valuation techniques for a situation and to identify the issues that drive value and can turn a decision• The ability to persuasively communicate complex ideas and tell the story behind the numbers• Accessibility and responsiveness so problems and surprises are addressed before they come up• Timely work product that responds to the matter at dispute• Cost-effective services that provide good value to the paying clientMy job is to make your life easier when it comes to valuations or economic damages, and to be a valued team member that you can rely on for any related question.The best ways to reach me are:wthomsen@gtllp.comLinkedIn messaging818-502-4950

Listed skills include Business Valuation, Due Diligence, Valuation, Finance, and 18 others.

Current workplace

William Thomsen's current company

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Grobstein Teeple LLP
Grobstein Teeple Llp
Business Valuation and Economic Damages Expert: I Provide Information that Empowers Clients to Get Better Results
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9 roles · 35 years

William Thomsen work experience

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Director

Current

Woodland Hills, California, US

𝙒𝙃𝘼𝙏 𝙄 𝘿𝙊: I specialize in helping business litigators and their clients by providing credible valuation opinions for shareholder and contract disputes and eminent domain litigation. 𝙒𝙃𝙊 𝙄 𝙒𝙊𝙍𝙆 𝙒𝙄𝙏𝙃: I partner primarily with attorneys specializing in shareholder and contract litigation and eminent domain matters that require a credible business valuation.

Apr 2018 - Present

Consultant

Thomsen Llc

Thomsen LLC provided business valuation, economic analysis and litigation support services to attorneys, advisors, business owners and government entities.

Jun 2011 - Apr 2018

Senior Manager

Los Angeles, CA, US

Management and execution of business valuation engagements for financial and tax reporting, transactions and financing, and dispute resolution. Economic damage assessment for commercial and employment disputes.

Jan 2012 - Apr 2012

Senior Manager

New York, New York, US

Marcum LLP is one of the largest independent public accounting and advisory services firms in the nation. As a Senior Manager of the Marcum LLP's Advisory Services division, I helped clients with issues requiring business valuation, due diligence, economic damage assessment, business litigation, and expert testimony.(On October 1 2010, Stonefield.

Nov 2009 - Jun 2011

Principal/Vice President

Marcus And Thomsen, Inc.

Provided valuation, economic analysis, damage assessment, and expert witness services. Our blend of research and financial modeling assisted clients in clarifying key issues and implementing sound solutions.

May 2006 - Nov 2009

Manager, Valuation Services

US

Manager of valuation services for regional CPA firm offering audit, taxation and advisory services. Performed and managed business and intangible asset valuations and economic damage analyses for tax reporting, business and strategic planning, and commercial litigation. Made presentations to law firms on various valuation topics. Testified on various.

Apr 2005 - May 2006

Manager, Valuation And Litigation Support Services

US

Manager of valuation services for large regional CPA firm. Performed and managed valuations of closely-held businesses and intangible assets and economic analyses for tax reporting, business and strategic planning, and commercial litigation. Supervised, trained and oversaw staff valuation analysts. Created and made presentations to law firms and other.

Jan 2002 - Apr 2005

Vice President

American Valuation Group, Inc.

Performed and supervised business valuations and economic analysis for estate and gift tax, business combinations, and litigation support purposes. Prepared for and presented expert testimony relating to economic damages and business valuation.

1991 - 2001 ~10 yrs

Litigation Consultant

GB

Calculated economic damages and assessed liability issues for complex business disputes in such areas as antitrust and breach of contract.

Aug 1985 - May 1988
3 education records

William Thomsen education

Mba, Finance

Columbia Business School

Ba, Economics

Pomona College

International Economics

University Of Oxford
FAQ

Frequently asked questions about William Thomsen

Quick answers generated from the profile data available on this page.

What company does William Thomsen work for?

William Thomsen works for Grobstein Teeple LLP.

What is William Thomsen's role at Grobstein Teeple LLP?

William Thomsen is listed as Business Valuation and Economic Damages Expert: I Provide Information that Empowers Clients to Get Better Results at Grobstein Teeple LLP.

What is William Thomsen's email address?

AeroLeads has found 1 work email signal at @gtllp.com for William Thomsen at Grobstein Teeple LLP.

What is William Thomsen's phone number?

AeroLeads has found 8 phone signal(s) with area code 310, 319, 404 for William Thomsen at Grobstein Teeple LLP.

Where is William Thomsen based?

William Thomsen is based in Los Angeles Metropolitan Area, United States, United States while working with Grobstein Teeple LLP.

What companies has William Thomsen worked for?

William Thomsen has worked for Grobstein Teeple Llp, Thomsen Llc, Singerlewak Llp, Marcum Llp, and Marcus And Thomsen, Inc..

How can I contact William Thomsen?

You can use AeroLeads to view verified contact signals for William Thomsen at Grobstein Teeple LLP, including work email, phone, and LinkedIn data when available.

What schools did William Thomsen attend?

William Thomsen holds Mba, Finance from Columbia Business School.

What skills is William Thomsen known for?

William Thomsen is listed with skills including Business Valuation, Due Diligence, Valuation, Finance, Litigation Support, Financial Modeling, Tax, and Auditing.

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