Sarah Hanneman

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 ...

Doris Brosnan is a Shareholder in the firm’s Labor and Employment Law Section, and focuses on assisting clients with employment issues. Doris regularly advises health care and corporate clients on dealing with disloyal or difficult employees, accommodating disabilities in the workplace, harassment, workplace violence, FMLA, and the development of effective employment policies and practices. She regularly assists clients in preparing and implementing employee transition plans, including ...

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...

Nick G. Kotsonis has been a shareholder with the firm since 1999 and was appointed to the Board of Directors as of January 1, 2014. His practice areas include employment litigation/worker’s compensation, business and commercial litigation, insurance coverage litigation, personal injury, premises liability, environmental/toxic tort claims and risk management.

Jerome R. Kerkman is a lawyer recognized by Best Lawyers in the practice areas of Bankruptcy and Creditor Debtor Rights / Insolvency and Reorganization Law and Commercial Litigation. Jerome R. practices law in Milwaukee, Wisconsin Best Lawyers has recognized Jerome R. Kerkman since 2020. 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 Jerome R. Kerkman is h...

Seth E. Dizard is a Milwaukee, Wisconsin attorney with O’Neil, Cannon, Hollman, DeJong & Laing SC . He serves as chair of the firm’s Banking, Receivership, and Creditors’ Rights Practice Group and regularly serves as a court-appointed receiver throughout Wisconsin. His receivership work involves businesses, construction projects, real estate developments, marital and family estates, rental income properties, and individuals with substantial assets. Seth represents financ...

Attorney Teri M. Nelson focuses her practice on Family Law and brings a thoughtful, client-centered approach to every matter she handles. Based in Milwaukee, Wisconsin, she understands that family law issues often involve significant personal, emotional, and financial concerns. Attorney Nelson believes each client deserves individualized attention, clear communication, and practical guidance throughout the legal process. Clients value her prompt, straightforward responses and her commitment t...

John (Jack) Goller is a Shareholder in the Litigation and Risk Management Practice Group at von Briesen & Roper, s.c. For more than 20 years, his practice has focused on complex civil litigation with an emphasis on mass toxic torts, product liability, transportation and catastrophic loss defense of corporations and their insurers. He serves his clients as national, regional and local counsel and takes an active role in all phases of litigation from fact and expert discovery until resoluti...

Kristin Langhoff is a lawyer recognized by Best Lawyers in the practice areas of Construction Law, Land Use and Zoning Law and Real Estate Law. Kristin practices law in Milwaukee, Wisconsin Best Lawyers has recognized Kristin Langhoff 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 Kristin Langhoff is held by other lawyers.

Stacy Gerber Ward is a Shareholder, leader of the Government Enforcement and Internal Investigations Section, and Co-Chair of the Health Law Section. As leader of the Government Enforcement and Corporate Investigations Section, Stacy represents clients facing government enforcement matters, conducts internal investigations to respond to government investigations, and litigates government related issues. In the health care area, Stacy assists clients with an array of health care transactional ...