Thomas G. Halloran

Jason is a Shareholder at O’Neil Cannon where he leads the firm’s Corporate Practice Group and serves on the firm’s Board of Directors. With more than 15 years of experience, Jason primarily focuses on mergers and acquisitions. In this role, he represents buyers and sellers, including mature companies, family offices, wealthy individuals who aspire to acquire a business, and private equity groups. In addition to his M&A practice, Jason works closely with his corporate cl...

Olivier Reiher is a lawyer recognized by Best Lawyers in the practice areas of Bankruptcy and Creditor Debtor Rights / Insolvency and Reorganization Law, Business Organizations (including LLCs and Partnerships) and Corporate Law. Olivier practices law in Milwaukee, Wisconsin Best Lawyers has recognized Olivier Reiher since 2027. 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 professio...

Sam Hall is the Managing Partner of Crivello, Nichols & Hall, S.C. and is a member of the firm’s Board of Directors. His principal practice focuses on federal civil rights litigation, government affairs and appellate advocacy. He is also a certified mediator. Sam has successfully defended hundreds of law enforcement officers, government officials and even judges in cases involving alleged civil rights violations. He is admitted to practice and has represented parties in high profile...

Andrew Christman is a Shareholder in the Litigation and Risk Management Practice Group at von Briesen & Roper, s.c. He has extensive litigation experience involving matters in numerous state and federal courts across the country. He focuses his practice on toxic tort, product liability, premises liability, and insurance litigation. Andrew also has experience in construction litigation, professional liability, and appellate litigation. Andrew helps clients develop, maintain and implement d...

Linda Meagher is a lawyer recognized by Best Lawyers in the practice areas of Litigation - Health Care and Litigation - Insurance. Linda practices law in Milwaukee, Wisconsin Best Lawyers has recognized Linda Meagher 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 Linda Meagher is held by other lawyers.

Dan Miske earned his bachelor’s degree in accounting from Marquette University and his Juris Doctor from DePaul University College of Law. He practices with Kaman & Cusimano LLC in Milwaukee, Wisconsin, where he works with clients on matters involving Commercial Litigation, Community Association Law, Litigation – Real Estate, and Real Estate Law. Dan has served on various boards, giving him practical insight into the operational and legal challenges faced by community associat...

Jon Levine has a national practice focusing on representing employers in all areas of labor-management relations, including litigation before the National Labor Relations Board and in state and federal courts. He also has significant experience with: The National Labor Relations Act Union organizing campaigns Collective bargaining Labor arbitration Title VII The Americans with Disabilities Act The Age Discrimination in Employment Act The Wisconsin Fair Employment Act Jon’s notable succe...

Chad is a shareholder and member of the firm’s Business Law Practice Group. His practice focuses on working with privately held businesses and their owners, acting as corporate counsel to help them with the various legal issues they face in operating and expanding their businesses. As part of his practice, Chad has considerable experience in Mergers and Acquisitions and frequently works with businesses on ownership transition events. He prides himself on providing efficient, practical l...

Colleen E. Fielkow is a lawyer recognized by Best Lawyers in the practice area of Commercial Litigation. Colleen E. practices law in Milwaukee, Wisconsin Best Lawyers has recognized Colleen E. Fielkow 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 Colleen E. Fielkow is held by other lawyers.

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...