Mark A. Kircher

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 ...

For over forty-five years, Dennis has advised business owners in all areas of contract and corporate law. He focuses primarily on assisting his clients with business succession planning, estate planning, contract and corporate law—with an emphasis on mergers and acquisitions, and shareholder/partner disputes. One of the founding members of the firm in 1973, Dennis has assisted hundreds of business owners and their companies in structuring successful business succession plans. These comp...

David G. Hanson is a top attorney recognized by Best Lawyers in the practice area(s) of Advertising Law, Litigation - ERISA, Litigation - Intellectual Property and Litigation - Patent. David G., who practices law in Milwaukee, Wisconsin, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David G. is held by other top lawyers in the same geographic and legal practice area.

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...

Sarah Kaas is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. Sarah, who practices law in Milwaukee, Wisconsin, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sarah is held by other top lawyers in the same geographic and legal practice area.

Jennifer R. D'Amato is a top attorney recognized by Best Lawyers in the practice area(s) of Business Organizations (including LLCs and Partnerships), Closely Held Companies and Family Businesses Law, Litigation - Trusts and Estates, Tax Law and Trusts and Estates. Jennifer R., who practices law in Milwaukee, Wisconsin, has been recognized since 2007. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jennifer R. is held by other top lawyers in t...

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 ...

Randy Nelson is a Shareholder focusing his practice on estate planning, advising family businesses, tax planning, trust administration and probate. He is a Certified Public Accountant and was an Adjunct Professor at Marquette University Law School where he taught estate planning for over 30 years. He is a frequent speaker at continuing education courses for lawyers and CPAs on the subjects of estate planning and tax planning. He is the author of the chapter “Estate Planning for Owners o...

Keith E. Kopplin is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Litigation - Labor and Employment. Keith E., 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 Keith E. is held by other top lawyers in the same geographic and legal practice area.

Tom Phillips focuses his practice on taxation and provides tax analysis, advice, and tax opinions to publicly traded and closely-held business entities. He has more than 40 years of experience representing clients in and structuring and implementing tax-free reorganizations and mergers, spinoffs, cross-border transactions, taxable asset and stock purchase transactions and partnership transactions. That experience also includes representing private placement investments in limited partnerships...