William J. Katt

Jon and his firm have handled every kind of injury case you can imagine: auto and motorcycle collisions, product liability, civil litigation, nursing home neglect, bicycle and pedestrian accidents, and animal attacks.

Andrew Wier is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice and Personal Injury Litigation - Plaintiffs. Andrew, who practices law in Kenosha, Wisconsin, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Andrew is held by other top lawyers in the same geographic and legal practice area.

Tom Kammerait is a Shareholder and the Chair of the Business Succession Planning Section. Tom represents businesses on all aspects of their corporate and business needs including transactional matters, tax, general corporate, real estate, technology, and estate planning issues. Tom generates value by helping clients set priorities for enhancing the value of their businesses and identifying risk management strategies, on a tax-efficient basis. He is also a CPA, so his knowledge of accounting g...

Benjamin R. Prinsen is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Benjamin R., who practices law in Milwaukee, Wisconsin, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Benjamin R. is held by other top lawyers in the same geographic and legal practice area.

Jesse B. Blocher is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Jesse B., who practices law in Waukesha, Wisconsin, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jesse B. is held by other top lawyers in the same geographic and legal practice area.

Joseph E. Tierney, III has more than forty years of experience focused primarily on tax and corporate law for businesses, owner families and individuals. He has particular experience in the design and administration of plans for very large estates, including some whose accumulated assets have totaled in the eight- and nine-figures. He has also been lead counsel in the purchase and sale of numerous businesses and has extensive experience in entity selection and structuring. Because tax consequ...

JB leads O’Neil Cannon’s Business Law Practice Group and is a United States Air Force Veteran. He works with and advises clients on a wide range of business law matters, including form of entity selection and initial capitalization, raising funds through private equity offerings, securities compliance and broker/dealer matters, mergers and acquisitions, contract preparation and negotiation, and software, technology, and IP matters. JB Assists Clients With Mergers, acquisitions, an...

Although he was born, raised, and offices in southeastern Wisconsin, Tim Trecek has earned a national reputation as a successful plaintiff’s trial lawyer. Mr. Trecek’s successes have been so noteworthy that they have been chronicled in papers throughout the United States. Mr. Trecek’s notable cases have been reported in the Boston Globe, the Washington Post, the Fort Worth Star Telegram, the Minneapolis Star Tribune, the San Francisco Chronicle and dozens of other publicatio...

William R. Cummings is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. William R., who practices law in Milwaukee, Wisconsin, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which William R. is held by other top lawyers in the same geographic and legal practice area.

Phillip Tallmadge is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Insurance, Personal Injury Litigation - Defendants and Product Liability Litigation - Defendants. Phillip, 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 Phillip is held by other top lawyers in the same geographic and legal practice area.