Kenneth P. Barczak

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...

Kristina E. Somers is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation and Controversy - Tax and Tax Law. Kristina E., 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 Kristina E. is held by other top lawyers in the same geographic and legal practice area.

Peter Walsh is an attorney with twenty years of experience in estate and asset protection planning and inheritance litigation. Peter assists clients with preserving family wealth through estate and asset protection planning. For example, he utilizes various estate planning techniques to minimize taxes and administrative expenses upon the death or incapacity of a family member. Such planning may include a revocable trust to avoid the cost of court involvement upon the death or incapacity of th...

John K. Tokarz is a business lawyer whose practice focuses on complex transactions. As a Certified Public Accountant who previously worked as an auditor for a Big Four accounting firm, John understands his clients’ businesses. From startups to publicly traded companies, he provides a full range of transactional and strategic support to clients with matters involving mergers and acquisitions, joint ventures, divestures, securities offerings and other significant corporate transactions. I...

Eric P. Hagemeier is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Mergers and Acquisitions Law. Eric P., who practices law in Waukesha, Wisconsin, has been recognized since 2015. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Eric P. is held by other top lawyers in the same geographic and legal practice area.

Ronald S. Aplin is a top attorney recognized by Best Lawyers in the practice area(s) of Workers' Compensation Law - Employers. Ronald S., who practices law in Waukesha, Wisconsin, has been recognized since 1995. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ronald S. is held by other top lawyers in the same geographic and legal practice area.

Thomas J. Nichols is a shareholder at Meissner Tierney Fisher & Nichols S.C. in Milwaukee, Wisconsin. Over the course of his 40-plus-year career, he has represented a great number of businesses in many different industries, as well as participated in the drafting and development of business and tax statutes and policy at both the state and federal levels.Thomas is well versed in both business entity law (e.g., corporations, LLCs and partnerships) and tax law (e.g., S corp, C corp, partner...

Lawrence Drabot is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Insurance and Product Liability Litigation - Defendants. Lawrence, 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 Lawrence 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 ...

David J. Sisson is a shareholder in the firm’s Litigation and Labor and Employment Practices. David solves problems that arise when critical personal business relationships end. These include disputes involving departing key employees and shareholders in closely held corporations and others who owe fiduciary duties. Controversies often develop at the conclusion of these relationships regarding what may be owned by, or owed to, the respective parties. A departing employee may try to esta...