Dennis M. Grzezinski

Jason leads O’Neil Cannon’s Corporate Practice Group. He advises and represents individuals, businesses, and banks on a variety of corporate, banking, and business-related issues, including mergers and acquisitions, commercial loan transactions, corporate issues, contract negotiation and preparation, and business entity selection and formation. Jason Assists Clients With Mergers and acquisitions Complex commercial loan transactions for lenders and borrowers Corporate matters, incl...

John Sikora is a Shareholder representing clients in tax planning, tax controversies and the buying and selling of businesses and real estate with a particular focus on corporate, partnership and other business matters. John is an adjunct professor of law at Marquette University Law School, where he has taught the tax practice and procedure and corporate income tax courses. John has also taught the taxation of partnerships and S corporations course to graduate accounting degree candidates at ...

Francis W. Deisinger is a top attorney recognized by Best Lawyers in the practice area(s) of Bet-the-Company Litigation, Commercial Litigation and Ethics and Professional Responsibility Law. Francis W., who practices law in Milwaukee, Wisconsin, has been recognized since 2011. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Francis W. is held by other top lawyers in the same geographic and legal practice area.

Agatha K. Raynor is a shareholder with Crivello, Nichols & Hall. She concentrates her practice in employment law and regularly advises clients on compliance, best practices and risk management in all areas of employment law, including: accommodation of disabilities; addressing harassment complaints; reductions in force; separation agreements; and implementing effective employment policies and practices. Agatha also defends private and public employers in employment-related litigation befo...

John A. Erich is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. John A., who practices law in Milwaukee, Wisconsin, has been recognized since 2003. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John A. is held by other top lawyers in the same geographic and legal practice area.

Dave Cisar Co-Chairs the Banking and Commercial Finance Section. He draws on his 35 years of experience to counsel businesses on governance, financing, contracting, real estate, acquisitions and strategic planning. Dave has a strong focus on the Uniform Commercial Code (“UCC”) and represents financial institutions and businesses in all aspects of commercial finance and other commercial transactions including terms and conditions of sales, commercial loan agreements, inter-creditor...

Daniel P. Cooper is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Tax Law. Daniel P., who practices law in Milwaukee, Wisconsin, has been recognized since 2009. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Daniel P. is held by other top lawyers in the same geographic and legal practice area.

J.J. Rolling is a Shareholder at von Briesen & Roper, s.c. focusing his practice on matters involving real estate including eminent domain, drainage problems and property tax assessments. Prior to joining von Briesen, J.J. handled cases from negotiation to appeal with a boutique eminent domain practice. He gained experience with condemnation litigation during law school as an extern with the Wisconsin Department of Justice’s Civil Litigation Unit and as an intern with the Wisconsin ...

Steven C. McGaver is a top attorney recognized by Best Lawyers in the practice area(s) of Civil Rights Law. Steven C., who practices law in Milwaukee, Wisconsin, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Steven C. is held by other top lawyers in the same geographic and legal practice area.

Stephen E. Kravit is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Criminal Defense: White-Collar. Stephen E., who practices law in Milwaukee, Wisconsin, has been recognized since 1991. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Stephen E. is held by other top lawyers in the same geographic and legal practice area.