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Sean Michael Sweeney

Sean Michael Sweeney

Halling & Cayo
  • Business Law, Entertainment & Sports Law, Real Estate Law ...
  • Wisconsin
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Sean's practice focuses on business transactional law, business litigation, civil litigation, and real estate law. Sean has experience litigating business and civil disputes as both plaintiff's and defendant's counsel, helping buyers and sellers complete real estate transactions, as well as experience drafting contracts ranging from small business contracts to plow a parking lot to large corporation contracts dealing with operating and maintaining real estate.

Sean earned his Juris Doctor (JD) and Masters of Business Administration (MBA) from Marquette University. He earned his Bachelor of Science degree in Business Economics from Northern Arizona University. Before joining Halling & Cayo, Sean ran his own practice, Tosa Law Office.

Sean has not only the legal training and experience needed to provide complete service, he also has the education and training to understand the real world needs and challenges that organizations large and small face today.

Main Office:
320 East Buffalo St.
Suite 700
Milwaukee, WI 53202
Phone: 414-271-3400

Waukesha Office:
20720 Watertown Rd.
Suite 202
Waukesha, WI 53186
Phone: 262-782-5200

Practice Areas
Business Law
Business Contracts, Business Dissolution, Business Finance, Business Formation, Business Litigation, Franchising, Mergers & Acquisitions, Partnership & Shareholder Disputes
Entertainment & Sports Law
Real Estate Law
Commercial Real Estate, Condominiums, Easements, Eminent Domain, Homeowners Association, Land Use & Zoning, Mortgages, Neighbor Disputes, Residential Real Estate, Water Law
Securities Law
Stockbroker & Investment Fraud
Additional Practice Areas
  • Business Litigation
  • General Civil
  • Free Consultation
    I am always willing to give a free 15 minute consultations for all cases, and a half hour consultation for most business litigation cases.
Jurisdictions Admitted to Practice
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Federal Circuit
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  • Spanish: Spoken
Professional Experience
Halling & Cayo
- Current
I continue to focus on Wisconsin Business Law, Litigation, Business Formation, and Real Estate law. I have expanded my practice areas to include Securities Arbitration and Sports Law.
Tosa Law Office
Ran my own solo practice focusing on Wisconsin Business Law, Litigation, and Real Estate Law.
Legal Intern
Milwaukee Bucks
Drafted and edited sponsorship deals and employment contracts for the Milwaukee Bucks.
Marquette University Law School
J.D | Certificate In Sports Law
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Marquette University
M.A | MBA in Sports Business
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Northern Arizona University
B.S | Business Economics
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Professional Associations
Wisconsin State Bar  # 1063452
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Websites & Blogs
Milwaukee Business Lawyer
Wisconsin Lawyers Blog
Contact & Map
Halling & Cayo
320 E. Buffalo St.
Suite 700
Milwaukee, WI 53202
Telephone: (414) 271-3400
Telephone: (414) 271-3400
Fax: (414) 386-1722
Waukesha Office
20720 Watertown Rd.
Suite 202
Waukesha, WI 53186
Telephone: (262) 782 Ext. 5200