Brent A. Stork

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...

Gregory assists his clients with family law matters. He is recognized by judges and peers as one of Wisconsin’s premier family law attorneys. He uses his extensive skill, training, and experience to help his clients achieve successful resolutions of their divorce, paternity, custody, placement, and support matters. Gregory is a Fellow in the American Academy of Matrimonial Lawyers and a Board Certified Family Law Trial Advocate by the National Board of Trial Advocacy. He is uniquely pos...

David B. Karp is a family law attorney with nearly 40 years of experience representing clients throughout Milwaukee and Wisconsin in divorce , child custody , property division , maintenance, and other family law matters. Over the course of his career, he has handled thousands of family law cases, including hundreds of trials, giving him substantial courtroom and litigation experience. Attorney Karp was recognized as “Lawyer of the Year” for Family Law in Milwaukee by U.S. News &a...

Bill Ehrke is a shareholder with Crivello Carlson, S.C. Bill’s civil litigation practice focuses on the defense of corporations, insurers, municipalities, creditors, lenders, and repossession agents, with emphasis on personal injury defense, first party property insurance investigations and bad faith defense, the defense of lenders and repossession agents in Wisconsin Consumer Act and Fair Debt Collection Practices Act claims, third party casualty insurance defense, municipal civil righ...

Philip R. O'Brien is a lawyer recognized by Best Lawyers in the practice area of Employee Benefits (ERISA) Law. Philip R. practices law in Milwaukee, Wisconsin Best Lawyers has recognized Philip R. O'Brien since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Philip R. O'Brien is held by other lawyers.

James Barton is the founding shareholder of Barton Legal S.C. Mr. Barton was formerly a partner at Hansen Reynolds LLC—a premier litigation boutique with offices in three states. Prior to his time at Hansen Reynolds, Mr. Barton was an associate in the litigation practice group at Michael Best & Friedrich LLP, one of Wisconsin’s oldest and largest law firms. Mr. Barton concentrates his practice on aggressively litigating complex commercial disputes venued in state and federal c...

Dave Roettgers is a Shareholder focusing his practice on the purchase and sale of businesses, taxation, corporate finance and business law. He is a Certified Public Accountant and uses his prior experience at Arthur Andersen LLP where he provided tax planning and business advice for individual and business clients. Representative Matters and Experience Representation of families and owners in all types of business planning including the transition of the business to the next generation, finan...

Steve Szymanski is a Shareholder in the Business Practice Group where he Co-Chairs the Business and Corporate Law and the Mergers and Acquisitions Sections. Steve is a trusted advisor to his clients. Steve draws upon his background in tax, finance and the law to help his clients identify legal and business issues, and work with his clients and their advisors to provide practical and effective solutions. Steve represents privately and publicly held clients in all aspects of their corporate and...

John Barlament is a partner in the Employee Benefits Group. He represents employers, third party administrators, brokers and benefit consultants in all aspects of employee benefits law. Mr. Barlament has extensive experience in a broad range of issues, including: health care reform (Patient Protection and Affordable Care Act) compliance and strategy; executive compensation issues; assisting both pension and welfare multi-employer plans in all their legal needs; merging and terminating plans; ...

Adam J. Tutaj is a shareholder of the firm, and concentrates his practice in the areas of business, tax and health law. Since joining the firm in 1999, he has developed his practice as “general counsel” to clients in a wide range of industries, including: manufacturing, physician group practices, real estate developers, and large 501(c)(3) medical specialty organizations having national and international scope. Adam is a frequent speaker and author on the issues of tax law, health...